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7/27/2019 3Com 7750 Config Guide
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3Com Switch 7750 FamilyConfiguration Guide
Switch 7750Switch 7754Switch 7757Switch 7758
www.3Com.comPart Number: 10015462 Rev. ADPublished: December 2007
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3Com Corporation350 Campus DriveMarlborough, MAUSA 01752-3064
Copyright 2006-2007, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in anyform or by any means or used to make any derivative work (such as translation, transformation, or adaptation) withoutwritten permission from 3Com Corporation.
3Com Corporation reserves the right to revise this documentation and to make changes in content from time to timewithout obligation on the part of 3Com Corporation to provide notification of such revision or change.
3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied orexpressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality,and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s)
described in this documentation at any time.
If there is any software on removable media described in this documentation, it is furnished under a license agreementincluded with the product as a separate document, in the hard copy documentation, or on the removable media in adirectory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy willbe provided to you.
UNITED STATES GOVERNMENT LEGEND
If you are a United States government agency, then this documentation and the software described herein are provided toyou subject to the following:
All technical data and computer software are commercial in nature and developed solely at private expense. Software isdelivered as Commercial Computer Software as defined in DFARS 252.227-7014 (June 1995) or as a commercial itemas defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Coms standard commerciallicense for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) orFAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend providedon any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registeredin other countries.
3Com and the 3Com logo are registered trademarks of 3Com Corporation.
Cisco is a registered trademark of Cisco Systems, Inc.
Funk RADIUS is a registered trademark of Funk Software, Inc.
Aegis is a registered trademark of Aegis Group PLC.
Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows NT areregistered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of Novell, Inc. UNIX is aregistered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.
IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Inc.
All other company and product names may be trademarks of the respective companies with which they are associated.
ENVIRONMENTAL STATEMENT
It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committedto:
Establishing environmental performance standards that comply with national legislation and regulations.
Conserving energy, materials and natural resources in all operations.
Reducing the waste generated by all operations. Ensuring that all waste conforms to recognized environmental standards.Maximizing the recyclable and reusable content of all products.
Ensuring that all products can be recycled, reused and disposed of safely.
Ensuring that all products are labelled according to recognized environmental standards.
Improving our environmental record on a continual basis.
End of Life Statement
3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.
Regulated Materials Statement
3Com products do not contain any hazardous or ozone-depleting material.
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CONTENTS
ABOUT THIS GUIDEConventions 17
Related Documentation 17
1 CLI OVERVIEWIntroduction to the CLI 19
Command Level/Command View 19
CLI Features 29
2 LOGGINGINTOAN ETHERNET SWITCHLogging into an Ethernet Switch 33
Introduction to the User Interface 33
3 LOGGINGINTHROUGHTHE CONSOLE PORTIntroduction 35
Logging in through the Console Port 35
Console Port Login Configuration 37
Console Port Login Configuration with Authentication Mode Being None 39
Console Port Login Configuration with Authentication Mode Being Password 42
Console Port Login Configuration with Authentication Mode Being Scheme 46
4 LOGGINGINTHROUGH TELNETIntroduction 51
Telnet Configuration with Authentication Mode Being None 52
Telnet Configuration with Authentication Mode Being Password 55
Telnet Configuration with Authentication Mode Being Scheme 58
Telneting to a Switch 62
5 LOGGINGIN USING MODEMIntroduction 65
Configuration on the Administrator Side 65
Configuration on the Switch Side 65
Modem Connection Establishment 66
Modem Attributes Configuration 68
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4 CONTENTS
6 LOGGINGINTHROUGHTHE WEB-BASED NETWORK MANAGEMENTSYSTEMIntroduction 71
Establishing an HTTP Connection 71
Configuring the Login Banner 72
Enabling/Disabling the WEB Server 73
7 LOGGINGINTHROUGH NMSIntroduction 75
Connection Establishment Using NMS 75
8 USER CONTROLIntroduction 77
Controlling Telnet Users 77
Controlling Network Management Users by Source IP Addresses 79Controlling Web Users by Source IP Address 80
9 CONFIGURATION FILE MANAGEMENTIntroduction to Configuration File 83
Configuration File-Related Operations 83
10 VLAN OVERVIEWVLAN Overview 87
Port-Based VLAN 89
Protocol-Based VLAN 91
11 VLAN CONFIGURATIONVLAN Configuration 95
Configuring a Port-Based VLAN 97
Configuring a Protocol-Based VLAN 100
12 VOICE VLAN CONFIGURATIONVoice VLAN Overview 105
Voice VLAN Configuration 108
Displaying and Maintaining Voice VLAN Configuration 110Voice VLAN Configuration Example 110
13 ISOLATE-USER-VLAN CONFIGURATIONIsolate-User-VLAN Overview 113
Isolate-User-VLAN Configuration 114
Displaying Isolate-User-VLAN Configuration 116
Isolate-User-VLAN Configuration Example 116
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Contents 5
14 SUPER VLANSuper VLAN Overview 121
Super VLAN Configuration 121
Displaying Super VLAN 123
Super VLAN Configuration Example 124
15 IP ADDRESS CONFIGURATIONIP Address Overview 127
Configuring an IP Address for a VLAN Interface 129
Displaying IP Address Configuration 130
IP Address Configuration Example 130
Troubleshooting 130
16 IP PERFORMANCE CONFIGURATION
IP Performance Overview 131IP Performance Configuration 131
Configuring TCP Attributes 132
Configuring to Send Special IP Packets to CPU 132
Enabling Forwarding of Directed Broadcasts to a Directly Connected Network 132
Disabling ICMP Error Message Sending 133
Displaying and Debugging IP Performance 133
Troubleshooting 134
17 IPX CONFIGURATIONIPX Protocol Overview 137
IPX Configuration 138
Displaying and Debugging IPX 145
IPX Configuration Example 145
Troubleshooting IPX 147
18 GVRP CONFIGURATIONIntroduction to GARP and GVRP 153
GVRP Configuration 156
Displaying and Maintaining GVRP 157
GVRP Configuration Example 158
19 QINQ CONFIGURATIONQinQ Overview 159
QinQ Configuration 160
Displaying QinQ 161
QinQ Configuration Example 161
20 SELECTIVE QINQ CONFIGURATIONSelective QinQ Overview 165
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6 CONTENTS
Selective QinQ Configuration 165
Configuring Outer Tag Replacement 166
Selective QinQ Configuration Example 167
21 SHARED
VLAN CONFIGURATION
Shared VLAN Overview 169
Shared VLAN Configuration 170
Displaying Shared VLAN 170
Shared VLAN Configuration Example 171
22 PORT BASIC CONFIGURATIONEthernet Port Configuration 173
Ethernet Port Configuration Example 180
Troubleshooting Ethernet Port Configuration 181
23 LINK AGGREGATION CONFIGURATIONOverview 183
Link Aggregation Configuration 189
Displaying and Maintaining Link Aggregation Configuration 192
Link Aggregation Configuration Example 193
24 PORT ISOLATION CONFIGURATIONPort Isolation Overview 195
Configuring Port Isolation 195
Displaying Port Isolation Configuration 196
Port Isolation Configuration Example 196
25 PORT SECURITY CONFIGURATIONPort Security Overview 199
Port Security Configuration 202
Displaying Port Security Configuration 206
Port Security Configuration Example 206
26 PORT BINDING CONFIGURATION
Port Binding Overview 209Displaying Port Binding Configuration 209
Port Binding Configuration Example 210
27 DLDP CONFIGURATIONOverview 211
DLDP Fundamentals 212
DLDP Configuration 218
DLDP Network Example 222
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Contents 7
28 MAC ADDRESS TABLE MANAGEMENTOverview 225
Configuring MAC Address Table Management 227
Displaying and Maintaining MAC Address Configuration 230
Configuration Example 231
29 CENTRALIZED MAC ADDRESS AUTHENTICATION CONFIGURATIONCentralized MAC Address Authentication Overview 233
Centralized MAC Address Authentication Configuration 234
Displaying and Debugging Centralized MAC Address Authentication 237
Centralized MAC Address Authentication Configuration Example 237
30 MSTP CONFIGURATIONMSTP Overview 241
Root Bridge Configuration 246Leaf Node Configuration 259
The mCheck Configuration 263
Protection Function Configuration 264
Digest Snooping Configuration 268
Rapid Transition Configuration 269
BPDU Tunnel Configuration 272
STP Maintenance Configuration 274
MSTP Displaying and Debugging 274
MSTP Implementation Example 275
BPDU Tunnel Configuration Example 277
31 IP ROUTING PROTOCOL OVERVIEWIntroduction to IP Route and Routing Table 281
Routing Management Policy 283
32 STATIC ROUTE CONFIGURATIONIntroduction to Static Route 285
Static Route Configuration 286
Displaying and Maintaining the Routing Table 286
Static Route Configuration Example 287
Troubleshooting a Static Route 288
33 RIP CONFIGURATIONRIP Overview 289
Introduction to RIP Configuration Tasks 290
Basic RIP Configuration 291
RIP Route Control 293
RIP Network Adjustment and Optimization 296
Displaying and Maintaining RIP Configuration 298
RIP Configuration Example 299
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8 CONTENTS
Troubleshooting RIP Configuration 300
34 OSPF CONFIGURATIONOSPF Overview 301
Introduction to OSPF Configuration Tasks 307Basic OSPF Configuration 309
OSPF Area Attribute Configuration 311
OSPF Network Type Configuration 312
OSPF Route Control 313
OSPF Network Adjustment and Optimization 316
Displaying OSPF Configuration 320
OSPF Configuration Example 321
Troubleshooting OSPF Configuration 325
35 IS-IS CONFIGURATIONIS-IS Overview 327
Introduction to IS-IS Configuration 332
IS-IS Basic Configuration 333
Displaying Integrated IS-IS Configuration 345
Integrated IS-IS Configuration Example 345
36 BGP CONFIGURATIONBGP Overview 349
BGP Configuration Tasks 354
Basic BGP Configuration 355
Configuring the Way to Advertise/Receive Routing Information 356Configuring BGP Route Attributes 361
Adjusting and Optimizing a BGP Network 363
Configuring a Large-Scale BGP Network 365
Displaying and maintaining BGP 368
Configuration Example 369
BGP Error Configuration Example 376
37 IP ROUTING POLICY CONFIGURATIONIP Routing Policy Overview 377
IP Routing Policy Configuration 378Displaying IP Routing Policy 383
IP Routing Policy Configuration Example 383
Troubleshooting IP Routing Policy 385
38 ROUTE CAPACITY CONFIGURATIONRoute Capacity Configuration Overview 387
Route Capacity Configuration 387
Displaying Route Capacity Configuration 388
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Contents 9
39 802.1X CONFIGURATIONIntroduction to 802.1x 389
802.1x Configuration 399
Basic 802.1x Configuration 399
802.1x-Related Parameter Configuration 401
Advanced 802.1x Configuration 401
Displaying and Debugging 802.1x 403
Configuration Example 404
40 HABP CONFIGURATIONIntroduction to HABP 409
HABP Server Configuration 409
HABP Client Configuration 410
Displaying HABP 410
HABP Configuration Example 410
41 MULTICAST OVERVIEWMulticast Overview 413
Multicast Architecture 416
Forwarding Mechanism of Multicast Packets 420
42 GMRP CONFIGURATIONGMRP Overview 423
Configuring GMRP 423
Displaying and Maintaining GMRP 424
GMRP Configuration Example 424
43 IGMP SNOOPING CONFIGURATIONOverview 427
IGMP Snooping Configuration 430
Displaying and Maintaining IGMP Snooping 437
IGMP Snooping Configuration Example 438
Troubleshooting IGMP Snooping 440
44 COMMON MULTICAST CONFIGURATIONOverview 441
Common Multicast Configuration Tasks 441
Displaying Common Multicast Configuration 445
45 STATIC MULTICAST MAC ADDRESS TABLE CONFIGURATIONOverview 447
Configuring a Multicast MAC Address Entry 447
Displaying Multicast MAC Address 447
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10 CONTENTS
46 IGMP CONFIGURATIONOverview 449
IGMP Configuration Tasks 454
Displaying IGMP 460
47 PIM CONFIGURATIONPIM Overview 461
Common PIM Configuration 469
PIM-DM Configuration 472
PIM-SM Configuration 472
Displaying and Debugging PIM 475
PIM Configuration Examples 476
Troubleshooting PIM 479
48MSDP CONFIGURATIONMSDP Overview 481
Configuring MSDP Basic Functions 487
Configuring Connection between MSDP Peers 488
Configuring SA Message Transmission 490
Displaying and Debugging MSDP Configuration 493
MSDP Configuration Example 494
Troubleshooting MSDP Configuration 504
49 AAA & RADIUS & HWTACACS CONFIGURATIONOverview 507
Configuration Tasks 516
AAA Configuration 518
RADIUS Configuration 525
HWTACACS Configuration 532
Displaying and Maintaining AAA & RADIUS & HWTACACS Information 536
AAA & RADIUS & HWTACACS Configuration Example 537
Troubleshooting AAA & RADIUS & HWTACACS Configuration 541
50 EAD CONFIGURATIONIntroduction to EAD 543
Typical Network Application of EAD 543EAD Configuration 544
EAD Configuration Example 545
51 TRAFFIC ACCOUNTING CONFIGURATIONIntroduction to Traffic Accounting 547
Configuring Traffic Accounting 548
Displaying Traffic Accounting 549
Traffic Accounting Configuration Example 550
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Contents 11
52 VRRP CONFIGURATIONVRRP Overview 553
VRRP Configuration 557
Displaying and Maintaining VRRP 559
VRRP Configuration Example 559
Troubleshooting VRRP 565
53 HA CONFIGURATIONHA Overview 567
HA Configuration 568
Displaying HA 569
54 ARP CONFIGURATIONIntroduction to ARP 571
Configuring ARP 575Displaying and Maintaining ARP Configuration 579
ARP Configuration Example 580
55 PROXY ARP CONFIGURATIONProxy ARP Overview 583
Configuring Proxy ARP 584
Proxy ARP Configuration Example 584
56 DHCP OVERVIEW
Introduction to DHCP 589DHCP IP Address Assignment 589
DHCP Packet Format 590
DHCP Packet Processing Modes 592
Protocols and Standards 592
57 DHCP SERVER CONFIGURATIONIntroduction to DHCP Server 593
Global Address Pool-Based DHCP Server Configuration 594
Interface Address Pool-Based DHCP Server Configuration 600
DHCP Security Configuration 606
Displaying and Maintaining a DHCP Server 607
DHCP Server Configuration Example 607
Troubleshooting a DHCP Server 609
58 DHCP RELAY AGENT CONFIGURATIONIntroduction to DHCP Relay Agent 611
Configuring DHCP Relay Agent 613
Displaying and Maintaining DHCP Relay Agent 620
DHCP Relay Agent Configuration Example 620
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12 CONTENTS
Troubleshooting DHCP Relay Agent 621
59 DHCP SNOOPING CONFIGURATIONConfiguring DHCP Snooping 623
DHCP Snooping Configuration 628Displaying and Maintaining DHCP Snooping 632
DHCP Snooping Configuration Example 632
60 ACL CONFIGURATIONACL Overview 637
Choosing ACL Mode for Traffic Flows 639
Specifying the Matching Order of ACL Rules Sent to a Port 640
Configuring Time Ranges 640
Defining Basic ACLs 641
Defining Advanced ACLs 642
Defining Layer 2 ACLs 647
Defining User-Defined ACLs 649
Applying ACLs on Ports 650
Displaying ACL Configuration 652
ACL Configuration Example 653
61 QOS CONFIGURATIONOverview 657
QoS Supported by the Switch 7750 666
Setting Port Priority 666
Configuring Priority to Be Used When a Packet Enters an Output Queue 667Configuring Priority Remark 669
Configuring Rate Limit on Ports 671
Configuring TP 672
Configuring Redirect 673
Configuring Queue-scheduling 674
Configuring Congestion Avoidance 675
Configuring Traffic Statistics 676
Configuring Assured Bandwidth 678
Configuring Bidirectional CAR 679
Configuring Traffic-Based Selective QinQ 679
QoS Configuration Example 681
62 MIRRORING CONFIGURATIONOverview 685
Mirroring Supported by the Switch 7750 688
Mirroring Configuration 688
63 CLUSTERCluster Overview 703
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Contents 13
Management Device Configuration 708
Member Device Configuration 711
Intra-Cluster Configuration 713
Displaying and Maintaining a Cluster 713
Cluster Configuration Example 714
64 POE CONFIGURATIONPoE Overview 719
PoE Configuration 721
Displaying PoE Configuration 723
PoE Configuration Example 724
65 POE PSU SUPERVISION CONFIGURATIONIntroduction to PoE PSU Supervision 727
AC Input Alarm Thresholds Configuration 727
DC Output Alarm Threshold Configuration 728
Displaying PoE Supervision Information 729
PoE PSU Supervision Configuration Example 729
66 POE PROFILE CONFIGURATIONIntroduction to PoE Profile 731
PoE Profile Configuration Tasks 731
Displaying PoE Profile Configuration 732
PoE Profile Configuration Example 732
67 UDP-HELPER CONFIGURATIONIntroduction to UDP-Helper 735
Configuring UDP-Helper 735
Displaying and Maintaining UDP-Helper 736
UDP-Helper Configuration Example 737
68 SNMP CONFIGURATIONSNMP Overview 739
Configuring SNMP Basic Functions 741
Configuring Trap 743
Displaying SNMP 744SNMP Configuration Example 745
69 RMON CONFIGURATIONIntroduction to RMON 747
RMON Configuration 749
Displaying RMON 750
RMON Configuration Example 750
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14 CONTENTS
70 NTP CONFIGURATIONIntroduction to NTP 753
NTP Implementation Mode Configuration 757
Access Control Permission Configuration 759
NTP Authentication Configuration 759
Configuration of Optional NTP Parameters 761
Displaying and Debugging NTP 762
Configuration Example 762
71 SSH TERMINAL SERVICESSSH Terminal Services 773
SFTP Service 784
72 FILE SYSTEM MANAGEMENT
File System Configuration 791
73 BIMS CONFIGURATIONIntroduction to BIMS 797
BIMS Device Configuration Tasks 798
Basic Configuration of BIMS Device 798
Configuring BIMS Access Mode 799
BIMS Configuration Example 800
74 FTP AND TFTP CONFIGURATION
FTP Configuration 803TFTP Configuration 810
75 INFORMATION CENTERInformation Center Overview 815
Information Center Configuration 819
Displaying and Debugging Information Center Configuration 825
Information Center Configuration Examples 825
76 DNS CONFIGURATION
DNS Overview 831Configuring Static DNS Resolution 833
Configuring Dynamic DNS Resolution 833
Displaying and Maintaining DNS 834
Troubleshooting DNS Configuration 835
77 BOOTROM AND HOST SOFTWARE LOADINGIntroduction to Loading Approaches 837
Local Software Loading 837
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Contents 15
Remote Software Loading 846
78 BASIC SYSTEM CONFIGURATION & DEBUGGINGBasic System Configuration 853
Displaying the System Status 855System Debugging 855
79 NETWORK CONNECTIVITY TESTNetwork Connectivity Test 859
80 DEVICE MANAGEMENTIntroduction to Device Management 861
Device Management Configuration 861
Configuring Pause Frame Protection Mechanism 866
Configuring Layer 3 Connectivity Detection 867Configuring Queue Traffic Monitoring 868
Configuring Error Packets Monitoring 868
Displaying the Device Management Configuration 869
Remote Switch Update Configuration Example 870
81 REMOTE-PING CONFIGURATIONRemote-ping Overview 873
Remote-ping Configuration 876
Remote-ping Configuration Example 889
82 RRPP CONFIGURATIONRRPP Overview 903
Master Node Configuration 909
Transit Node Configuration 911
Edge Node Configuration 912
Assistant Edge Node Configuration 914
Configuration Example 916
83 TELNET PROTECTION CONFIGURATION
Introduction 921Telnet Protection Configuration 921
84 SMART LINK CONFIGURATIONSmart Link Overview 923
Configuring Smart Link 925
Displaying and Debugging Smart Link 928
Smart Link Configuration Example 928
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16 CONTENTS
85 MONITOR LINK CONFIGURATIONIntroduction to Monitor Link 931
Configuring Monitor Link 932
Displaying Monitor Link Configuration 934
Monitor Link Configuration Example 934
86 CONFIGURING HARDWARE-DEPENDENT SOFTWAREConfiguring Boot ROM Upgrade with App File 937
Configuring Inter-Card Link State Adjustment 938
Configuring Internal Channel Monitoring 939
Configuring Switch Chip Auto-reset 939
Configuring CPU Usage Threshold 940
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ABOUT THIS GUIDE
This guide describes the 3Com Switch 7750 and how to install hardware,configure and boot software, and maintain software and hardware. This guidealso provides troubleshooting and support information for your switch.
This guide is intended for Qualified Service personnel who are responsible forconfiguring, using, and managing the switches. It assumes a working knowledgeof local area network (LAN) operations and familiarity with communicationprotocols that are used to interconnect LANs.
nAlways download the Release Notes for your product from the 3Com World WideWeb site and check for the latest updates to software and productdocumentation:
http://www.3com.com
Conventions Table 1 lists icon conventions that are used throughout this guide.
RelatedDocumentation
The following manuals offer additional information necessary for managing yourSwitch 7750:
Switch 7750 Command Reference Guide Provides detailed descriptions ofcommand line interface (CLI) commands, that you require to manage yourSwitch 7750.
Switch 7750 Quick Reference Guide Provides a summary of command lineinterface (CLI) commands that are required for you to manage your Switch7750.
Switch 7750 Getting Started Guide Provides detailed descriptions of thehardware, explains how to set up and install the hardware and software foryou Switch 7750.
Table 1 Notice Icons
Icon Notice Type Description
n
Information note Information that describes important features or
instructions.
cCaution Information that alerts you to potential loss of data
or potential damage to an application, system, ordevice.
wWarning Information that alerts you to potential personal
injury.
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18 ABOUT THIS GUIDE
Switch 7750 Release Notes Contains the latest information about yourproduct. If information in this guide differs from information in the releasenotes, use the information in the Release Notes.
These documents are available in Adobe Acrobat Reader Portable Document
Format (PDF) on the CD-ROM that accompanies your router or on the 3ComWorld Wide Web site:
http://www.3com.com/
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1CLI OVERVIEW
Introduction to the CLI A 3Com series Ethernet switch provides a command line interface (CLI) andcommands for you to configure and manage the Ethernet switch. The CLI isfeatured by the following:
Commands are grouped by levels. This prevents unauthorized users fromoperating the switch with relevant commands.
Users can gain online help at any time by entering the question mark ?.
Commonly used diagnosing utilities (such as Tracert and Ping) are available. Debugging information of various kinds is available.
The command history is available. You can recall and execute a historycommand easily.
You can execute a command by only entering part of the command in the CLI,as long as the keywords you input uniquely identify the corresponding ones.
CommandLevel/Command View
To prevent unauthorized accesses, commands are grouped by command levels.
Commands fall into four levels: visit, monitor, system, and manage:
Visit level: Commands at this level are mainly used to diagnose network andchange the language mode of user interface, and cannot be saved inconfiguration files. For example, the ping, tracert, and language-modecommands are at this level.
Monitor level: Commands at this level are mainly used to maintain the systemand diagnose service problems, and cannot be saved to configuration files. Forexample, the display and debugging commands are at this level.
System level: Commands at this level are mainly used to configure services.Commands concerning routing and network layers are at this level. You canutilize network services by using these commands.
Manage level: Commands at this level are associated with the basic operationof the system, and the system supporting modules. These commands providesupports to services. Commands concerning file system, FTP, TFTP, usermanagement, and level setting are at this level.
Users logging into a switch also fall into four levels, each of which correspondingto one of the above command levels. Users at a specific level can only use thecommands of the same level and those of the lower levels.
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20 CHAPTER 1: CLI OVERVIEW
Switching between UserLevels
A user can switch the user level from one to another by executing a relatedcommand after logging into a switch. The administrator can also set user levelswitching passwords as required.
Setting a user level switching password
Table 1 lists the operations to set a user level switching password.
Switching to another user level
Table 2 lists operations to switch to another user level.
n If the user level is not specified when user level switching password are set or
when user level is switched, the user level is 3 by default.
For security purpose, the password a user enters when switching to a higheruser level is not displayed. A user will remain at the original user level if the userhas tried three times to enter the correct password but fails to do this.
Configuring the Level ofa Specific Command in a
Specific View
You can configure the level of a specific command in a specific view. Commandsfall into four command levels: visit, monitor, system, and manage, which areidentified as 0, 1, 2, and 3 respectively. The administrator can change thecommand level a command belongs to.
Table 3 lists the operations to configure the level of a specific command.
Table 1 Set a user level switching password
Operation Command Description
Enter system view system-view -
Set a password forswitching from alower user level to theuser level identified bythe levelargument
super password [ levellevel] { simple | cipher }
password
Optional
A password is necessary onlywhen a user switches from a loweruser level to a higher user level.
Table 2 Switch to another user level
Operation Command Description
Switch to the userlevel identified by thelevelargument
super [ level] Required
Execute this command in userview.
If a password for switching to theuser level identified by the levelargument is set and you want toswitch to a lower user level, youwill remain at the lower user levelunless you provide the correct
password after executing thiscommand.
Table 3 Configure the level of a specific command in a specific view
Operation Command Description
Enter system view system-view -
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Command Level/Command View 21
CLI Views CLI views are designed for different configuration tasks. They are interrelated. Youwill enter user view once you log into a switch successfully, where you can performoperations such as displaying operation status and statistical information. Inaddition, by executing the system-view command, you can enter system view,where you can enter other views by executing the corresponding commands.
The following CLI views are provided:
User view
System view M-Ethernet interface view
Ethernet port view
Null interface view
Tunnel interface view
AUX interface view
VLAN view
VLAN interface view
Loopback interface view
Local user view User interface view
FTP client view
SFTP client view
Cluster view
DHCP address pool view
MST region view
RRPP domain view
MSDP region view
Port-isolate-group view
HWping view
Public key view
Public key code view
PIM view
RIP view
OSPF view
OSPF area view
Configure the level ofa specific command ina specific view
command-privilege levellevelviewview command
Required
Use this command with caution toprevent inconvenience on
maintenance and operation.
Table 3 Configure the level of a specific command in a specific view
Operation Command Description
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22 CHAPTER 1: CLI OVERVIEW
BGP view
BGP IPv4 family multicast view
IS-IS view
ES-IS view
Routing policy view
Basic ACL view
Advanced ACL view
Layer 2 ACL view
User-defined ACL view
Traffic-group view
QoS view
QinQ view
RADIUS scheme view
HWTACACS scheme view
ISP domain view
RprGE view
PoE-profile view
Traffic-accounting view
Netstream autonomous system view
Netstream protocol - port aggregation view
Netstream source prefix aggregation view
Netstream destination prefix aggregation view Netstream source and destination aggregation view
Smart-link group view
Table 4 lists information about CLI views (including the operations you canperformed in these views, how to enter these views, and so on).
Table 4 CLI views
ViewAvailableoperation
Promptexample Enter method Quit method
User view Displayoperationstatus andstatisticalinformation
Enter user viewonce logging intothe switch.
Execute the quitcommand in user viewto log out of theswitch.
System view Configuresystemparameters
[SW7750] Execute thesystem-viewcommand in userview.
Execute the quit orreturn command toreturn to user view.
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Command Level/Command View 23
M-Ethernetinterface
view
ConfigureM-Ethernet
interfaceparameters
[SW7750-M-Ethernet0/0/0]
Manage Ethernetport view.
Execute theinterfacem-ethernet 0/0/0command insystem view.
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
Ethernetport view
ConfigureEthernet portparameters
[SW7750-Ethernet3/0/1]
100 M Ethernetport view
Execute theinterfaceethernet 3/0/1command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
[SW7750-GigabitEthernet4/0/1]
Gigabit Ethernetport view
Execute theinterfacegigabitethernet4/0/1 command insystem view.
Nullinterfaceview
Configure nullinterfaceparameters
[SW7750-NULL0]
Execute theinterface null 0command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Tunnelinterface
view
Configuretunnel
interfaceparameters
[SW7750-Tunnel0]
Execute theinterface tunnel 0
command insystem view.
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
AUXinterfaceview
Configure AUXinterfaceparameters
[SW7750-Aux0/0/0]
Execute theinterface aux0/0/0 command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
VLAN view ConfigureVLANparameters
[SW7750-vlan1] Execute the vlan 1command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
VLANinterfaceview
Configure IPinterfaceparameters forVLANs
[SW7750-Vlan-interface1]
Execute theinterfacevlan-interface 1command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Table 4 CLI views
ViewAvailableoperation
Promptexample Enter method Quit method
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Loopbackinterface
view
ConfigureLoopback
interfaceparameters
[SW7750-LoopBack0]
Execute theinterface
loopback 0command insystem view
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
Local userview
Configure localuserparameters
[SW7750-luser-user1]
Execute thelocal-user user1command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Userinterfaceview
Configure userinterfaceparameters
[SW7750-ui0] Execute theuser-interface 0command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
FTP clientview
Configure FTPclientparameters
[ftp] Execute the ftpcommand in userview.
Execute the quitcommand to return touser view.
SFTP clientview
Configure SFTPclientparameters
Execute the sftp10.1.1.1 commandin system view.
Execute the quitcommand to return touser view.
Cluster view Configureclusterparameters
[SW7750-cluster]
Execute the clustercommand insystem view.
Execute the quitcommand to return tosystem view.
Execute the return
command to return touser view.
DHCPaddress poolview
ConfigureDHCP addresspoolparameters
[SW7750-dhcp-pool-1]
Execute the dhcpserver ip-pool 1command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
MST regionview
Configure MSTregionparameters
[SW7750-mst-region]
Execute the stpregion-configuration command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
RRPPdomain view
Configure RRPPdomainparameters
[SW7750-rrpp-domain1]
Execute the rrppdomain 1command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Table 4 CLI views
ViewAvailableoperation
Promptexample Enter method Quit method
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Command Level/Command View 25
MSDPdomain view
ConfigureMSDP domain
parameters
[SW7750-msdp] Execute the msdpcommand in
system view.
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
Port-isolate-group view
Configureport-isolate-group parameters
[SW7750-port-isolate-group1]
Execute theport-isolategroup 1 commandin system view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
HWpingview
ConfigureHWping testgroupparameters
[SW7750-nqa-administrator-test]
Execute the nqaadministratortest command insystem view
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Public keyview
Configure RSApublic keys forsecure shell(SSH) users
[SW7750-rsa-public-key]
Execute the rsapeer-public-key3Com003command insystem view.
Execute thepeer-public-key endcommand to return tosystem view.
Public keycode view
Edit RSA publickeys of SSHusers
[SW7750-rsa-key-code]
Execute thepublic-key-codebegin command inpublic key view.
Execute thepublic-key-code endcommand to return topublic key view.
PIM view Configure PIMparameters
[SW7750-pim] Execute the pimcommand in
system view.Use the multicastrouting-enablecommand insystem view toenable multicastrouting if multicastrouting is disabled.
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
RIP view Configure RIPparameters
[SW7750-rip] Execute the ripcommand insystem view
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
OSPF view ConfigureOSPF protocolparameters
[SW7750-ospf-1]
Execute the ospfcommand insystem view
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Table 4 CLI views
ViewAvailableoperation
Promptexample Enter method Quit method
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OSPF areaview
ConfigureOSPF area
parameters
[SW7750-ospf-1-area-0.0.0.1]
Execute the area 1command in OSPF
view
Execute the quitcommand to return to
OSPF view.Execute the returncommand to return touser view.
BGP view Configureparameters forthe (bordergatewayprotocol) BGPprotocol
[SW7750-bgp] Execute the bgp100 command insystem view
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
BGP IPv4familymulticastview
Configureparameters forBGP IPv4 familymulticast
[SW7750-bgp-af-mul]
Execute theipv4-familymulticastcommand in BGPview.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
IS-IS view Configure IS-ISparameters
[SW7750-isis] Execute the isiscommand insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
ES-IS view Configureparameters forthe ES-ISprotocol
[SW7750-esis] Execute the esiscommand insystem view.
Execute the quitcommand to return tosystem view.
Execute the return
command to return touser view.
Routingpolicy view
Configurerouting policies
[SW7750-route-policy]
Execute theroute-policypolicy1 permitnode 10 commandin system view
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Basic ACLview
Define rules fora basic ACL(ACLs withtheir IDsranging from2000 to 2999
are basicACLs.)
[SW7750-acl-basic-2000]
Execute the aclnumber 2000command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
AdvancedACL view
Define rules foran advancedACL (ACLs withtheir IDsranging from3000 to 3999are advancedACLs.)
[SW7750-acl-adv-3000]
Execute the aclnumber 3000command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Table 4 CLI views
ViewAvailableoperation
Promptexample Enter method Quit method
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Command Level/Command View 27
Layer 2 ACLview
Define thesub-rules of
Layer 2 ACLs,which isnumberedfrom 4,000 to4,999.
[SW7750-acl-link-4000]
Execute the aclnumber 4000
command insystem view.
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
User-defined ACL view
Define thesub-rules ofuser-definedACLs, whichare in therange of 5000to 5999
[SW7750-acl-user-5000]
Execute the aclnumber 5000command insystem view
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Traffic-group view
Configuretraffic groupparameters
[SW7750-traffic-group-1]
Execute thetraffic-accounting traffic-group 1command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
QoS view Configure QoSparameters
[SW7750-qoss-GigabitEthernet4/0/1]
or:
[SW7750-qosb-GigabitEthernet4/0/1]
Execute the qoscommand inEthernet port view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
QinQ view Create QinQinstances and
configureparameters forQinQ
[SW7750-GigabitEthernet4/0/1-v
id-1000]
Execute thevlan-vpn vid 1000
uplink Ethernet1/0/5 untaggedcommand inEthernet port view.
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
RADIUSscheme view
ConfigureRADIUSparameters
[SW7750-radius-1]
Execute the radiusscheme 1command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
HWTACACSscheme view
Configureparameters fortheHWTACACS
protocol
[SW7750-hwtacacs-1]
Execute thehwtacacs scheme1 command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
ISP domainview
Configureparameters foran ISP domain
[SW7750-isp-aabbcc.net]
Execute thedomainaabbcc.netcommand insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Table 4 CLI views
ViewAvailableoperation
Promptexample Enter method Quit method
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RprGE view ConfigureRprGE logical
interfaceattributes
[SW7750-RprGE1/0/1]
Execute theinterface RprGE
1/0/1 command insystem view.
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
PoE profileview
Configure PoEprofileparameters
[SW7750-poe-profile-test]
Execute thepoe-profile testcommand insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Trafficaccountingview
Configuretrafficaccountingparameters
[SW7750-accounting-slot-0]
Execute thetraffic-accounting accounting-slot0 command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Netstreamautonomoussystemaggregationview
Configurenetstreamautonomoussystemaggregationparameters
[SW7750-aggregation-as]
Execute the ipnetstreamaggregation ascommand insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Netstreamprotocol -portaggregationview
Configurenetstreamprotocol-portaggregationparameters
[SW7750-aggregation-protport]
Execute the ipnetstreamaggregationprotocol-portcommand in
system view.
Execute the quitcommand to return tosystem view.
Execute the return
command to return touser view.
Netstreamsource prefixaggregationview
Configurenetstreamsource prefixaggregationparameters
[SW7750-aggregation-srcpre]
Execute the ipnetstreamaggregationsource-prefixcommand insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Netstreamdestinationprefixaggregationview
Configurenetstreamdestinationaggregationparameters
[SW7750-aggregation-dstpre]
Execute the ipnetstreamaggregationdestination-prefix command insystem view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Netstreamsource anddestinationaggregationview
Configurenetstreamsource anddestinationaggregationparameters
[SW7750-aggregation-prefix]
Execute the ipnetstreamaggregationprefix commandin system view.
Execute the quitcommand to return tosystem view.
Execute the returncommand to return touser view.
Table 4 CLI views
ViewAvailableoperation
Promptexample Enter method Quit method
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CLI Features 29
CLI Features
Online Help CLI provides two types of online help: complete online help and partial onlinehelp. They assist you with your configuration.
Complete online help
Enter a ? character in any view on your terminal to display all the commandsavailable in the view and their brief descriptions. The following takes user view asan example.
?
User view commands:
boot Set boot option
cd Change current directory
clock Specify the system clock
cluster Run cluster command
copy Copy from one file to another
debugging Enable system debugging functions
delete Delete a file
dir List files on a file system
display Display current system information
Enter a command, a space, and a ? character (instead of a keyword available inthis position of the command) on your terminal to display all the availablekeywords and their brief descriptions. The following takes the clock command asan example.
clock ?
datetime Specify the time and date
summer-time Configure summer time
timezone Configure time zone
Enter a command, a space, and a ? character (instead of an argument availablein this position of the command) on your terminal to display all the availablearguments and their brief descriptions. The following takes the interface vlancommand as an example.
[SW7750] interface vlan-interface ?
VLAN interface number
[SW7750] interface vlan-interface 1 ?
Smart-linkgroup view
Configuresmart-link
groupparameters
[SW7750-smlk-group1]
Execute thesmart-link group
command insystem view.
Execute the quitcommand to return to
system view.Execute the returncommand to return touser view.
Table 4 CLI views
ViewAvailableoperation
Promptexample Enter method Quit method
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The string means no argument is available in the position occupied by the? character. You can execute the command without providing any otherinformation.
Partial online help
Enter a string followed directly by a ? character on your terminal to display allthe commands beginning with the string. For example:
pi?
ping
Enter a command, a space, and a string followed by a ? character on yourterminal to display all the keywords that belong to the command and begin withthe string (if available). For example:
display ver?
version
Enter the first several characters of a keyword in a command and then press, the complete keyword will be displayed on the terminal screen if the inputcharacters uniquely identify a keyword. If the input characters match more thanone keywords, press the Tab key repeatedly and all the keyword that match theinput characters will be displayed on the terminal screen.
You can use the language-mode command to translate the help into Chinese.
Terminal Display CLI provides the following display feature:
Display suspending. That is, the displaying of output information can be splitwhen the screen is full and you can then perform the three operations listed inTable 5 as needed.
Command History CLI can store the latest executed commands as history commands so that userscan recall and execute them again. By default, CLI can store 10 history commandsfor each user. Table 6 lists history command-related operations.
Table 5 Displaying-related operations
Operation Function
Press Suspend displaying and executing.
Press the space key Scroll the output information up by one page.
Press Scroll the output information up by one line.
Table 6 Access history commands
Operation Operation Description
Display historycommands
Execute the displayhistory-command command
This command displays validhistory commands.
Recall the previoushistory command
Press the up-arrow key or
This operation recalls the previoushistory command (if available).
Recall the next historycommand
Pressing the down-arrow key or
This operation recalls the nexthistory command (if available).
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CLI Features 31
nAs the Up and Down keys have different meanings in HyperTerminal running onWindows 9x, these two keys can be used to recall history commands only interminals running Windows 3.x or Telnet running in Windows 3.x. You can press or in Windows 9x to achieve the same purpose.
Error Messages If the command you enter passes the syntax check, it will be successfully executed;otherwise an error message will appear. Table 7 lists the common error messages.
Command Edit The CLI provides basic command edit functions and supports multi-line editing.The maximum number of characters a command can contain is 254. Table 8 liststhe CLI edit operations.
Table 7 Common error messages
Error message Description
Unrecognized command The command does not exist.
The keyword does not exist.
The parameter type is wrong.
The parameter value is out of range.
Incomplete command The command entered is incomplete.
Too many parameters You have entered too many parameters.
Ambiguous command The parameters entered are ambiguous.
Wrong parameter The input parameter is wrong
Table 8 Edit operations
Press... To...
A common key Insert the character the key represents at the cursor andmove the cursor one character to the right if the edit
buffer is not full.The Backspace key Delete the character on the left of the cursor and move
the cursor one character to the left.
The left arrow key or Move the cursor one character to the left.
The right arrow key or Move the cursor one character to the right.
The up arrow key or
The down arrow key or
Access history commands.
The Tab key Utilize the partial online help. That is, when you enteran incomplete keyword and the Tab key, if the inputkeyword uniquely identifies an existing keyword, thesystem completes the keyword and displays thecommand on the next line. If the input keyword
matches more than one keyword, press the Tab keyrepeatedly, all the keywords are displayed on theterminal screen, with each keyword on a line. If theinput keyword matches no keyword, the systemdisplays your original input on a new line without anychange.
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2LOGGINGINTOAN ETHERNET SWITCH
Logging into anEthernet Switch
You can log into a Switch 7750 Ethernet switch in one of the following ways:
Logging in locally through the Console port
Telneting locally or remotely to an Ethernet port
Telneting to the Console port using a modem
Logging in through NMS (network management station)
Introduction to theUser Interface
Supported UserInterfaces
Switch 7750 Ethernet switch supports two types of user interfaces: AUX and VTY.
nThe AUX port and the Console port of a 3Com switch are the same port. You willbe in the AUX user interface if you log in through this port.
User Interface Number Two kinds of user interface index exist: absolute user interface index and relativeuser interface index.
1 The absolute user interface indexes are as follows:
AUX user interface: 0
VTY user interfaces: Numbered after AUX user interfaces and increases in the
step of 12 A relative user interface index can be obtained by appending a number to the
identifier of a user interface type. It is generated by user interface type. Therelative user interface indexes are as follows:
AUX user interface: AUX 0
VTY user interfaces: VTY 0, VTY 1, VTY 2, and so on.
Table 9 Description on user interface
User interface Applicable user Port used Description
AUX Users logging inthrough theConsole port
Console port Each switch can accommodate oneAUX user.
VTY Telnet users and
SSH users
Ethernet port Each switch can accommodate up to
five VTY users.
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Common User InterfaceConfiguration
cCAUTION:
The auto-execute commandcommand may cause you unable to performcommon configuration in the user interface, so use it with caution.
Before executing the auto-execute commandcommand and save your
configuration, make sure you can log into the switch in other modes andcancel the configuration.
Table 10 Common user interface configuration
Operation Command Description
Lock the current user interface lock Optional
Execute this command in user
view.A user interface is not lockedby default.
Specify to send messages toall user interfaces/a specifieduser interface
send { all | number| typenumber}
Optional
Execute this command in userview.
Disconnect a specified userinterface
free user-interface [ type ]number
Optional
Execute this command in userview.
Enter system view system-view -
Enable copyright informationdisplaying
copyright-info enable Optional
By default, copyrightinformation displaying isdisabled. That is, thecopyright information is notdisplayed after a user logs intoa switch successfully.
Enter user interface view user-interface [ type ]first-number[ last-number]
-
Set the command that isautomatically executed whena user logs into the userinterface
auto-execute commandtext Optional
By default, no command isautomatically executed whena user logs into a userinterface.
Display the information aboutthe current user interface/alluser interfaces
display users [ all ] Optional
These two commands can beexecuted in any view.
Display the physical attributesand configuration of thecurrent/a specified userinterface
display user-interface [ typenumber| number]
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3LOGGINGINTHROUGHTHE CONSOLEPORT
Introduction To log in through the Console port is the most common way to log into a switch.It is also the prerequisite to configure other login methods. Normally, you can loginto a Switch 7750 Ethernet switch through its Console port.
To log into an Ethernet switch through its Console port, the communicationconfiguration of the user terminal must be in accordance with that of the Consoleport.
Table 11 lists the default settings of a Console port.
After logging into a switch, you can perform configuration for AUX users. Refer toConsole Port Login Configuration on page 37 for more.
Logging in throughthe Console Port
Following are the procedures to connect to a switch through the Console port.
1 Connect the serial port of your PC/terminal to the Console port of the switch, asshown in Figure 1.
Figure 1 Diagram for setting the connection to the Console port
2 If you use a PC to connect to the Console port, launch a terminal emulation utility(such as Terminal in Windows 3.X or HyperTerminal in Windows 9X) and performthe configuration shown in Figure 2 through Figure 4 for the connection to becreated. Normally, the parameters of a terminal are configured as those listed inTable 11. And the type of the terminal is set to VT100.
Table 11 The default settings of a Console port
Setting Default
Baud rate 9,600 bps
Flow control None
Check mode (Parity) None
Stop bits 1
Data bits 8
PC Switch
RS-232
Configuration cable
Console port
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Figure 2 Create a connection
Figure 3 Specify the port used to establish the connection
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Console Port Login Configuration 37
Figure 4 Set port parameters
3 Turn on the switch. You will be prompted to press the Enter key if the switchsuccessfully completes POST (power-on self test). The prompt (such as )appears after you press the Enter key.
4 You can then configure the switch or check the information about the switch byexecuting the corresponding commands. You can also acquire help by type the ?character. The commands available on a switch are described in the relatedmodule of the command manual.
Console Port LoginConfiguration
Common Configuration Table 12 lists the common configuration of Console port login.
Table 12 Common configuration of Console port login
Configuration Remarks
Console portconfiguration
Baud rate Optional
The default baud rate is 9,600 bps.
Check mode Optional
By default, the check mode of the Console port isset to none, which means no check bit.
Stop bits Optional
The default stop bits of a Console port is 1.
Data bits Optional
The default data bits of a Console port is 8.
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cCAUTION: Changing of Console port configuration terminates the connection tothe Console port. To establish the connection again, you need to modify theconfiguration of the termination emulation utility running on your PC accordingly.Refer to Logging in through the Console Port on page 35for more.
Console Port LoginConfigurations for
Different AuthenticationModes
Table 13 lists Console port login configurations for different authentication modes.
AUX userinterfaceconfiguration
Configure the commandlevel available to theusers logging into the
AUX user interface
Optional
By default, commands of level 3 are available tothe users logging into the AUX user interface.
Terminalconfiguration
Make terminal servicesavailable
Optional
By default, terminal services are available in alluser interfaces
Set the maximumnumber of lines thescreen can contain
Optional
By default, the screen can contain up to 24 lines.
Set history commandbuffer size
Optional
By default, the history command buffer cancontain up to 10 commands.
Set the timeout time of auser interface
Optional
The default timeout time is 10 minutes.
Table 12 Common configuration of Console port login
Configuration Remarks
Table 13 Console port login configurations for different authentication modes
Authenticationmode Console port login configuration Remarks
None Performcommonconfiguration
Perform commonconfiguration forConsole port login
OptionalRefer to CommonConfiguration on page 37 formore.
Password Configure thepassword
Configure thepassword for localauthentication
Required
Performcommonconfiguration
Perform commonconfiguration forConsole port login
Optional
Refer to CommonConfiguration on page 37 formore.
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Console Port Login Configuration with Authentication Mode Being None 39
nChanges of the authentication mode of Console port login will not take effectunless you quit the command-line interface and then enter it again.
Console Port Login
Configuration withAuthentication ModeBeing None
Configuration Procedure
Scheme Specify toperform local
authenticationor RADIUSauthentication
AAA configurationspecifies whether to
perform localauthentication orRADIUSauthentication
Optional
Local authentication is
performed by default.
Refer to Configuring RADIUSAuthentication/AuthorizationServers on page 525 for more.
Configure username andpassword
Configure usernames andpasswords forlocal/RADIUS users
Required
The user name and passwordof a local user are configuredon the switch.
The user name and passwordof a RADIUS user areconfigured on the RADIUSserver. Refer to user manualof RADIUS server for more.
Manage AUXusers
Set service type forAUX users
Required
Performcommonconfiguration
Perform commonconfiguration forConsole port login
Optional
Refer to CommonConfiguration on page 37 formore.
Table 13 Console port login configurations for different authentication modes
Authenticationmode Console port login configuration Remarks
Table 14 Console port login configuration with the authentication mode being none
Operation Command Description
Enter system view system-view -
Enter AUX user interface view user-interface aux 0 -
Configure not to authenticateusers
authentication-modenone
Required
By default, users logging in
through the Console portare not authenticated.
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Configure theConsole port
Set the baud rate speed speed-value Optional
The default baud rate of anAUX port (also the Console
port) is 9,600 bps.
Set the checkmode
parity { even | mark |none | odd | space }
Optional
By default, the check modeof a Console port is set tonone, that is, no check bit.
Set the flowcontrol mode
flow-control { hardware |none | software }
Optional
By default, a Console portdoes not perform flowcontrol.
Set the stop bits stopbits { 1 | 1.5 | 2 } Optional
The stop bits of a Consoleport is 1.
Set the data bits databits { 7 | 8 } Optional
The default data bits of aConsole port is 8.
Configure the command levelavailable to users logging into theuser interface
user privilege levellevel Optional
By default, commands oflevel 3 are available to userslogging into the AUX userinterface.
Make terminal services available shell Optional
By default, terminal servicesare available in all userinterfaces.
Set the maximum number of linesthe screen can contain
screen-lengthscreen-length
Optional
By default, the screen cancontain up to 24 lines.
You can use thescreen-length0 commandto disable the function todisplay information inpages.
Set the history command buffersize
history-commandmax-sizevalue
Optional
The default historycommand buffer size is 10.That is, a history commandbuffer can store up to 10
commands by default.
Table 14 Console port login configuration with the authentication mode being none
Operation Command Description
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Console Port Login Configuration with Authentication Mode Being None 41
Note that the command level available to users logging into a switch through theNone authentication mode depends on both the authentication-mode nonecommand and the user privilege levellevelcommand, as listed in the followingtable.
Configuration Example Network requirements
Perform the following configuration for users logging in through the Consoleport:
Do not authenticate users logging in through the Console port.
Commands of level 2 are available to users logging into the AUX user interface.
The baud rate of the Console port is 19,200 bps.
The screen can contain up to 30 lines.
The history command buffer can contain up to 20 commands.
The timeout time of the AUX user interface is 6 minutes.
Set the timeout time for the userinterface
idle-timeoutminutes[seconds ]
Optional
The default timeout time ofa user interface is 10
minutes.
With the timeout timebeing 10 minutes, theconnection to a userinterface is terminated if nooperation is performed inthe user interface within 10minutes.
You can use theidle-timeout 0 commandto disable the timeoutfunction.
Table 15 Determine the command level (A)
Scenario
Command levelAuthenticationmode User type Command
None(authentication-mode none)
Users logging inthroughConsole ports
The user privilege levellevelcommand not executed
Level 3
The user privilege levellevel
command already executed
Determined by
the levelargument
Table 14 Console port login configuration with the authentication mode being none
Operation Command Description
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Network diagram
Figure 5 Network diagram for AUX user interface configuration (with the authenticationmode being none)
Configuration procedure
# Enter system view.
system-view
# Enter AUX user interface view.
[SW7750] user-interface aux 0
# Specify not to authenticate users logging in through the Console port.
[SW7750-ui-aux0] authentication-mode none
# Specify commands of level 2 are available to users logging into the AUX userinterface.
[SW7750-ui-aux0] user privilege level 2
# Set the baud rate of the Console port to 19,200 bps.
[SW7750-ui-aux0] speed 19200
# Set the maximum number of lines the screen can contain to 30.
[SW7750-ui-aux0] screen-length 30
# Set the maximum number of commands the history command buffer can storeto 20.
[SW7750-ui-aux0] history-command max-size 20
# Set the timeout time of the AUX user interface to 6 minutes.
[SW7750-ui-aux0] idle-timeout 6
Console Port LoginConfiguration withAuthentication ModeBeing Password
Configuration Procedure
PC Switch
RS-232
Configuration cable
Console port
Table 16 Console port login configuration with the authentication mode being password
Operation Command Description
Enter system view system-view -
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Enter AUX user interfaceview
user-interface aux 0 -
Configure to
authenticate users usingthe local password
authentication-mode
password
Required
By default, users logging into a switchthrough the Console port are notauthenticated; while those logging inthrough Modems or Telnet areauthenticated.
Set the local password set authenticationpassword { cipher |simple }password
Required
ConfiguretheConsoleport
Set thebaud rate
speed speed-value Optional
The default baud rate of an AUX port(also the Console port) is 9,600 bps.
Set thecheckmode
parity { even | mark |none | odd | space }
Optional
By default, the check mode of aConsole port is set to none, that is, nocheck bit.
Set theflowcontrolmode
flow-control { hardware| none | software }
Optional
By default, a Console port does notperform flow control.
Set thestop bits
stopbits { 1 | 1.5 | 2 } Optional
The default stop bits of a Console portis 1.
Set thedata bits
databits { 7 | 8 } Optional
The default data bits of a Console portis 8.
Configure the commandlevel available to userslogging into the userinterface
user privilege levellevel Optional
By default, commands of level 3 areavailable to users logging into theAUX user interface.
Make terminal servicesavailable to the userinterface
shell Optional
By default, terminal services areavailable in all user interfaces.
Set the maximumnumber of lines thescreen can contain
screen-lengthscreen-length
Optional
By default, the screen can contain upto 24 lines.
You can use the screen-length 0command to disable the function to
display information in pages.
Set history commandbuffer size
history-commandmax-sizevalue
Optional
The default history command buffersize is 10. That is, a history commandbuffer can store up to 10 commandsby default.
Table 16 Console port login configuration with the authentication mode being password
Operation Command Description
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Note that the command level available to users logging into a switch through thepassword authentication mode depends on both the authentication-modepassword and the user privilege levellevelcommand, as listed in the followingtable.
Configuration Example Network requirements
Perform the following configuration for users logging in through the Consoleport:
Authenticate users logging in through the Console port using the localpassword.
Set the local password to 123456 (in plain text).
The commands of level 2 are available to users logging into the AUX userinterface.
The baud rate of the Console port is 19,200 bps.
The screen can contain up to 30 lines.
The history command buffer can store up to 20 commands.
The timeout time of the AUX user interface is 6 minutes.
Set the timeout time forthe user interface
idle-timeoutminutes[seconds ]
Optional
The default timeout time of a userinterface is 10 minutes.
With the timeout time being 10minutes, the connection to a userinterface is terminated if no operationis performed in the user interfacewithin 10 minutes.
You can use the idle-timeout 0command to disable the timeoutfunction.
Table 17 Determine the command level (B)
Scenario
Command levelAuthentication mode User type
Command
Local passwordauthentication(authentication-modepassword)
Users logging inthrough the AUXuser interface
The user privilege levellevelcommand is notexecuted
Level 3
The user privilege levellevelcommand is alreadyexecuted
Determined bythe levelargument
Table 16 Console port login configuration with the authentication mode being password
Operation Command Description
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Console Port Login Configuration with Authentication Mode Being Password 45
Network diagram
Figure 6 Network diagram for AUX user interface configuration (with the authenticationmode being password)
Configuration procedure
# Enter system view.
system-view
# Enter AUX user interface view.
[SW7750] user-interface aux 0
# Specify to authenticate users logging in through the Console port using the local
password.
[SW7750-ui-aux0] authentication-mode password
# Set the local password to 123456 (in plain text).
[SW7750-ui-aux0] set authentication password simple 123456
# Specify commands of level 2 are available to users logging into the AUX userinterface.
[SW7750-ui-aux0] user privilege level 2
# Set the baud rate of the Console port to 19,200 bps.
[SW7750-ui-aux0] speed 19200
# Set the maximum number of lines the screen can contain to 30.
[SW7750-ui-aux0] screen-length 30
# Set the maximum number of commands the history command buffer can storeto 20.
[SW7750-ui-aux0] history-command max-size 20
# Set the timeout time of the AUX user interface to 6 minutes.
[SW7750-ui-aux0] idle-timeout 6
PC Switch
RS-232
Configuration cable
Console port
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Console Port LoginConfiguration withAuthentication ModeBeing Scheme
Configuration ProcedureTable 18 Console port login configuration with the authentication mode being scheme
Operation Command Description
Enter system view system-view -
Configure theauthenticationmode
Enter the default ISP domainview
domain domain-name Optional
By default, the localAAA scheme is applied.
If you specify to applythe local AAA scheme,you need to performthe configurationconcerning local user aswell.
If you specify to applyan existing scheme byproviding theradius-scheme-nameargument, you need toperform the followingconfiguration as well:
PerformAAA&RADIUSconfiguration on theswitch. (Refer toAAAConfiguration on
page 518 andRADIUSConfiguration onpage 525 for more.)
Configure the username and passwordaccordingly on theAAA server. (Refer tothe user manual ofAAA server.)
Specify the AAA scheme to beapplied to the domain
scheme { local | none |radius-schemeradius-scheme-name[ local ] |hwtacacs-schemehwtacacs-scheme-name
[ local ] }Quit to system view quit
Create a local user (Enter local userview.)
local-useruser-name Required
No local user exists bydefault.
Set the authentication password forthe local user password { simple |cipher }password Required
Specify the service type for AUX users service-type terminal[ levellevel]
Required
Quit to system view quit -
Enter AUX user interface view user-interface aux 0 -
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Console Port Login Configuration with Authentication Mode Being Scheme 47
Configure to authenticate users locallyor remotely
authentication-modescheme [ command-authorization ]
Required
The specified AAAscheme determines
whether to authenticateusers locally orremotely.
Users are authenticatedlocally by default.
Configure theConsole port
Set the baud rate speed speed-value Optional
The default baud rate ofthe AUX port (also theConsole port) is 9,600bps.
Set the check mode parity { even | mark |none | odd | space }
Optional
By default, the checkmode of a Console portis set to none, that is,no check bit.
Set the flow controlmode
flow-control { hardware| none | software }
Optional
By default, a Consoleport does not performflow control.
Set the stop bits stopbits { 1 | 1.5 | 2 } Optional
The default stop bits ofa Console port is 1.
Set the data bits databits { 7 | 8 } Optional
The default data bits ofa Console port is 8.
Configure the command level availableto users logging into the user interface
user privilege levellevel Optional
By default, commandsof level 3 are availableto users logging into theAUX user interface.
Make terminal services available to theuser interface
shell Optional
By default, terminalservices are available inall user interfaces.
Set the maximum number of lines thescreen can contain
screen-lengthscreen-length
Optional
By default, the screencan contain up to 24
lines.You can use thescreen-length 0command to disable thefunction to displayinformation in pages.
Table 18 Console port login configuration with the authentication mode being scheme
Operation Command Description
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Note that the command level available to users logging into a switch through thescheme authentication mode depends on the authentication-mode scheme[ command-authentication ] command and the service-type terminal [ levellevel] command, as listed in Table 19.
Configuration Example Network requirements
Perform the following configuration for users logging in through the Consoleport:
Configure the name of the local user to be guest.
Set the authentication password of the local user to 1234567890 (in plaintext).
Set the service type of the local user to Terminal, the available command levelof the user to 2.
Set history command buffer size history-commandmax-sizevalue
Optional
The default historycommand buffer size is
10. That is, a historycommand buffer canstore up to 10commands by default.
Set the timeout time for the userinterface
idle-timeoutminutes[seconds ]
Optional
The default timeouttime of a user interfaceis 10 minutes.
With the timeout timebeing 10 minutes, theconnection to a userinterface is terminated ifno operation isperformed in the userinterface within 10minutes.
You can use theidle-timeout 0command to disable thetimeout function.
Table 19 Determine the command level
Scenario
Command levelAuthenticationmode User type Command
authentication-mode scheme[ command-authorization ]
Users logginginto theConsole portand passAAA&RADIUSor localauthentication
The service-type terminal[ levellevel] command is notconfigured.
Level 0
The defaultcommand levelavailable for localusers is level 0.
The service-type terminal[ levellevel] command isconfigured.
Determined by thelevelargument
Table 18 Console port login configuration with the authentication mode being scheme
Operation Command Description
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Configure to authenticate users logging in through the Console port in thescheme mode.
The baud rate of the Console port is 19,200 bps.
The screen can contain up to 30 lines.
The history command buffer can store up to 20 commands. The timeout time of the AUX user interface is 6 minutes.
Network diagram
Figure 7 Network diagram for AUX user interface configuration (with the authenticationmode being scheme)
Configuration procedure
# Enter system view.
system-view
# Create a local user named guest and enter local user view.
[SW7750] local-user guest
# Set the authentication password to 1234567890 (in plain text).
[SW7750-luser-guest] password simple 1234567890
# Set the service type of the local user to Terminal, with the available command
level being 2.
[SW7750-luser-guest] service-type terminal level 2
[SW7750-luser-guest] quit
# Enter AUX user interface view.
[SW7750] user-interface aux 0
# Configure to authenticate users logging in through the Console port in thescheme mode.
[SW7750-ui-aux0] authentication-mode scheme
# Set the baud rate of the Console port to 19,200 bps.
[SW7750-ui-aux0] speed 19200
# Set the maximum number of lines the screen can contain to 30.
[SW7750-ui-aux0] screen-length 30
# Set the maximum number of commands the history command buffer can storeto 20.
PC Switch
RS-232
Configuration cable
Console port
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[SW7750-ui-aux0] history-command max-size 20
# Set the timeout time of the AUX user interface to 6 minutes.
[SW7750-ui-aux0] idle-timeout 6
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4LOGGINGINTHROUGH TELNET
Introduction You can manage and maintain a switch remotely by Telneting to the switch. Toachieve this, you need to configure both the switch and the Telnet terminalaccordingly.
Common Configuration Table 21 lists the common Telnet configuration.
Table 20 Requirements for Telnet to a switch
Item Requirement
Switch The IP address of the VLAN interface of the switch is configured and
the route between the switch and the Telnet terminal is available.(Refer to Configuring an IP Address for a VLAN Interface on page129 for more.)
The authentication mode and other settings are configured. Refer toTable 21 and Table 22.
Telnet terminal Telnet is running.
The VLAN IP address of the switch is available.
Table 21 Common Telnet configuration
Configuration Description
VTY userinterfaceconfiguration
Configure the commandlevel available to userslogging into the VTY userinterface
Optional
By default, commands of level 0 are availableto users logging into a VTY user interface.
Configure the protocols theuser interface supports
Optional
By default, Telnet and SSH protocol aresupported.
VTY terminalconfiguration
Make terminal servicesavailable
Optional
By default, terminal services are available in alluser interfaces
Set the maximum number oflines the screen can contain
Optional
By default, the screen can contain up to 24
lines.
Set history command buffersize
Optional
By default, the history command buffer cancontain up to 10 commands.
Set the timeout time of auser interface
Optional
The default timeout time is 10 minutes.
Set whether to display thecopyright statementinformation
Optional
By default, the copyright information isdisplayed when a user logs into a switchthrough Telnet.
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Telnet Configurationsfor Different
Authentication Modes
Table 22 lists Telnet configurations for different authentication modes.
Telnet Configurationwith AuthenticationMode Being None
Configuration Procedure
Table 22 Telnet configurations for different authentication modes
Authenticationmode Telnet configuration Description
None Performcommonconfiguration
Performcommon Telnetconfiguration
OptionalRefer to Table 21.
Password Configure thepassword
Configure thepassword forlocalauthentication
Required
Performcommonconfiguration
Performcommon Telnetconfiguration
Optional
Refer to Table 21.
Scheme Specify toperform localauthenticationor RADIUS
authentication
AAAconfigurationspecifieswhether to
perform localauthenticationor RADIUSauthentication
Optional
Local authentication is performed bydefault.
Refer to Configuring RADIUSAuthentication/AuthorizationServers on page 525 for more.
Configure username andpassword
Configure usernames andpasswords forlocal/RADIUSusers
Required
The user name and password of alocal user are configured on theswitch.
The user name and password of aremote user are configured onthe RADIUS server. Refer to usermanual of RADIUS server formore.
Manage VTYusers Set service typefor VTY users Required
Performcommonconfiguration
Performcommon Telnetconfiguration
Optional
Refer to Table 21.
Table 23 Telnet configuration with the authentication mode being none
Operation Command Description
Enter system view system-view -
Enter one or more VTY userinterface views
user-interface vtyfirst-number[ last-number]
-
Configure not to authenticateusers logging into VTY userinterfaces
authentication-mode none Required
By default, VTY users areauthenticated after loggingin.
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Note that if you configure not to authenticate the users, the command levelavailable to users logging into a switch depends on both the
authentication-mode none command and the user privilege levellevelcommand, as listed in Table 24.
Configure the command levelavailable to users logging intoVTY user interface
user privilege levellevel Optional
By default, commands of level0 are available to users
logging into VTY userinterfaces.
Configure the protocols to besupported by the VTY userinterface
protocol inbound { all | ssh |telnet }
Optional
By default, both Telnetprotocol and SSH protocol aresupported.
Make terminal servicesavailable
shell Optional
By default, terminal servicesare available in all userinterfaces.
Set the maximum number oflines the screen can contain
screen-lengthscreen-length Optional
By default, the screen can
contain up to 24 lines.You can use thescreen-length0 command todisable the function to displayinformation in pages.
Set the history commandbuffer size
history-command max-sizevalue
Optional
The default history commandbuffer size is 10. That is, ahistory command buffer canstore up to 10 commands bydefault.
Set the timeout time of theVTY user interface
idle-timeoutminutes[seconds ]
Optional
The default timeout time of a
user interface is 10 minutes.With the timeout time being10 minutes, the connection toa user interface is terminatedif no operation is performedin the user interface within 10minutes.
You can use the idle-timeout0 command to disable thetimeout function.
Table 23 Telnet configuration with the authentication mode being none
Operation Command Description
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Configu