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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Security Level: Internal www.huawei.com Transmission Network Marketing Support Department Huawei RTN microwave DCN Solutions

131066480 Huawei RTN Microwave DCN Solutions V1!3!20101115

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1www.huawei.com
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Huawei Confidential
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Document Description
Document Name
Purpose
Describes DCN principles, design principles, and how to design DCNs.
Intended Audience
Sales personnel, marketing personnel, HLD design personnel, and any other personnel involved. Note: This document shall not be disposed to customers or personnel outside Huawei.
Overview
This document describes DCN solutions and how to plan DCNs.
Organization
This document consists of the following parts: Brief introduction to DCN solutions Detailed description of DCN solutions. This part consists of the following sections: DCN concepts and DCN specifications Multi-scenario DCN solutions DCN cases FAQs
Version Information
Wang Xiaozhong
V1.10/2010-7-15
Ren Peiqi
Wang Xiaozhong
V1.20/2010-11-15
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Huawei Confidential
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Huawei Confidential
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Have You Ever Encountered the Following Problems When You Communicate DCN Information with Customers?
How does the NMS manage the equipment and how does one perform end-to-end DCN planning?
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OSS/NMS engineers design the external DCN.
External DCN
RTN department being the owner of the internal DCN
Two scenarios:
A network comprises Huawei radio equipment and third-party equipment.
Internal DCN
DCN TCP/IP
DCN TCP/IP
DCN TCP/IP
DCN TCP/IP, OSI
GNE
NE
NE
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The inband DCN (using IP protocol) is recommended for the OptiX RTN 900 V100R001, and the HWECC protocol is recommended for other versions.
When DCCs are unavailable, connect NEs through NM cascading ports to achieve transmission of network management information on extended ECCs.
DCN Planning When Huawei Radio Equipment Forms a Network Independently
60 NEs
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DCN Planning When Huawei Radio Equipment Forms a Network with Third-Party Equipment
Learn about the type of the third-party equipment
and the type of Huawei radio equipment.
FE channels
submit an OR workflow to apply for
the development of a new protocol converter.
Whether do both Huawei
customer for provision of channels.
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Contents
Multi-Scenario DCN Solutions
Huawei Confidential
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NMS
Router
DCN stands for data communication network.
A DCN provides communication channels for managing NEs in a centralized manner to
achieve remote management and maintenance
of NEs.
is called an external DCN.
Generally, the NMS is connected to NEs
through an external DCN that comprises
LAN switches, routers, and other data
communication devices.
internal DCN.
DCNs and outband DCNs.
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Physical Transmission Channels and Transmission Protocols of an Internal DCN
Service channels
Outband DCN
Inband DCN
Outband DCN
Transmission of NM information does not occupy service bandwidth because DCC bytes in overheads serve as physical channels of a DCN.
Inband DCN
Transmission of NM information occupies service channels (Ethernet service channels generally). For example, a VLAN of data services is used to transmit NM information.
Service channel: NM interface,TDM service,FE/GE and so on.
Physical transmission channels: inband DCN and outband DCN
ECC protocols: HWECC protocol, IP protocol, and OSI protocol
The HWECC solution applies to a network that comprises only Huawei equipment or scenarios wherein Huawei equipment need not communicate OAM information with other-vendor equipment.
The IP solution achieves support of the TCP/IP protocol on DCCs (physical layer)/LAN and applies to scenarios wherein Huawei equipment needs to communicate OAM information with other-vendor equipment.
Note: Application layer protocols are private protocols and cannot achieve communication of OAM information between equipment of different vendors, whereas other-layer protocols are standard protocols and can achieve communication of OAM information between equipment of different vendors.
The OSI solution achieves support of the OSI protocol on DCCs (physical layer) /LAN and applies to scenarios wherein Huawei equipment needs to communicate OAM information with other-vendor equipment.
Note: Application layer protocols are private protocols and cannot achieve communication of OAM information between equipment of different vendors, whereas other-layer protocols are standard protocols and can achieve communication of OAM information between equipment of different vendors.
HWECC protocol (private protocol)
IP protocol (standard protocol)
OSI protocol (standard protocol)
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The HWECC protocol is the private protocol stack of Huawei. It is most widely used on Huawei transmission equipment and is the maturest ECC communication solution. When the HWECC solution is adopted, NEs are identified with NE IDs and routes are automatically established. That is, application of the HWECC solution is very simple.
The IP over DCC solution achieves support of the TCP/IP protocol on DCCs (physical layer).
Different sets of transmission equipment transmit OAM information on DCCs by following a protocol. Due to historic reasons, however, the protocol stacks that vendors adopt for DCC communication are not completely compatible (for example, the HWECC private protocol that Huawei adopts is incompatible with the protocols that other vendors adopt). This results in failure of communicating OAM information on a network that comprises equipment of different vendors. To transparently transmit DCC information on the network, overheads or service resources need to be occupied. The IP over DCC solution achieves support of the TCP/IP protocol with no overheads or service resources occupied. If other-vendor equipment also supports the IP over DCC solution, interworking between management channels of Huawei equipment and management channels of other-vendor equipment is achieved.
The OSI over DCC solution achieves support of the OSI protocol on DCCs (physical layer).
Different sets of transmission equipment transmit OAM information on DCCs by following a protocol. Due to historic reasons, however, the protocol stacks that vendors adopt for DCC communication are not completely compatible (for example, the HWECC private protocol that Huawei adopts is incompatible with the protocols that other vendors adopt). This results in failure of communicating OAM information on a network that comprises equipment of different vendors. To transparently transmit DCC information on the network, overheads or service resources need to be occupied. The OSI over DCC solution achieves support of the OSI protocol with no overheads or service resources occupied. If other-vendor equipment also supports the OSI over DCC solution, interworking between management channels of Huawei equipment and management channels of other-vendor equipment is achieved.
The OSI model consists of seven layers, namely, physical layer (DCC), data link layer, network layer, transport layer, session layer, presentation layer, and application layer. The OSI over DCC protocol provided by Huawei implements the functions of the bottom four layers, namely, physical layer (DCC), data link layer, network layer, and transport layer. The other three layers, namely, session layer, presentation layer, and application layer, adopt private protocols.
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DCN Solutions Provided for Huawei Radio
The preceding solutions are provided based on the combination of a DCN protocol (IP protocol, OSI protocol, and HWECC protocol) and transmission channels (DCCs, service channels and in_band DCC).
In the case of a network comprising only Huawei equipment, the HWECC solution is preferred. In the case of a network comprising Huawei equipment and third-party equipment, the protocol converter solution is preferred and prepare quotations for protocol converters in advance.
DCN Solution
Physical Channel
Applicable Scenario
DCC/ETH (network port)
This solution is applicable to a network wherein equipment supports the HWECC protocol and DCCs are interconnected. This solution is preferred when a network comprises only Huawei equipment.
This solution is applicable to a network that comprises only Huawei equipment.
IP over DCC
This solution is preferred when a network comprises the OptiX transmission equipment and the third-party equipment that supports the IP over DCC function.
The OptiX transmission equipment forms a network with third-party equipment. On the network, DCCs are shared but DCC bandwidths are limited. In addition, the number of permitted NEs is also limited.
OSI over DCC
This solution is preferred when a network comprises the OptiX transmission equipment and the third-party equipment that supports the OSI over DCC function.
The OptiX transmission equipment forms a network with third-party equipment. On the network, DCCs are shared but DCC bandwidths are limited. In addition, the number of permitted NEs is also limited.
Extended ECC
HWECC
Ethernet
No service channels are available between two OptiX NEs but the two OptiX NEs can interconnect with each other through NM ports.
This solution is applicable to a network that comprises only Huawei equipment. By default, a maximum of three NEs can be managed.
Inband DCN
Service channels
A very small part of service bandwidth is occupied. This solution is applicable to a network that comprises only Huawei equipment.
IP protocol
This solution is applicable to a network that comprises the OptiX RTN 900 equipment and other equipment.
A very small part of service bandwidth is occupied, but networking is flexible.
DCC transparent transmission
NA
DCCs
This solution is applicable to a network that comprises the OptiX transmission network and the third-party SDH equipment that does not support the IP over DCC function or OSI over DCC function.
In actual situations, SDH radio is seldom used. In addition, the equipment must support the configuration of D byte. Therefore, this solution is seldom adopted.
DCC transparent transmission through the external clock interface
Not involved
External Clock Interface
This solution is applicable to a network that does not support transparent transmission of DCC bytes carrying NM messages.
huawei MW assing through third-party equipmentand transmited by E1
Protocol converter solution
Auxiliary services or service channels
Huawei radio equipment transmits NM information to a third-party NM port by using a protocol converter according to the type of the third-party NM port. Thus, NM information is transparently transmitted.
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The HWECC protocol uses DCCs or extended ECCs. In addition, an Ethernet is used as extended channels for ECC transmission. Therefore, when no DCC is available between two or more NEs, connect the Ethernet NM ports or NE cascading ports of the NEs to achieve communication through extended ECCs.
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DCN Solutions Supported by Each Major Version of Huawei Radio
For information on whether a board supports a specific solution, see the DCN White Paper or Feature Description.
DCN Solution
Physical Channel
Not involved
Wayside E1
Y
Y
Y
Y
Y
Y
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A protocol converter performs mutual conversion between signal protocols.
Application scenario: DCN information needs to be transmitted between two NEs but the two NEs provide different protocol ports. The protocol converter solution is preferred when Huawei equipment forms a network with third-party equipment.
Protocol Converter
Mutual conversion between 1xFE+1xE1 and 1xE1
Mutual conversion between 1xFE and 1xQ703
Mutual conversion between 1xFE and multiple E1s
Note
E1_MUX_Converter with different BOM can not interconnect
RS232
FE
E1
FE
E1
FE
FE
G703
FE
E1
E1
E1
G703_ConverterG.703FEG.70364kbps
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Protocol Converter Application Scenarios
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many non-gateway NEs as possible?
How many non-gateway NEs can
a gateway NE manage?
A gateway NE can manage a maximum of 60
non-gateway NEs. If NEs is more than 60, more gateway
NE is required
the maximum number of non-gateway NEs that
a gateway NE can manage is as follows:
DCN Channel
3 to 5
5 to 10
30 to 50
500 to 1000
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B: equivalent coefficient of
Management capability of an NMS
The management capability of an NMS refers to the maximum
number of NEs that the NMS can manage when the preset
performance specifications are met.
Maximum number of NEs that can be managed = 1000 x A/B
NM Server
15
6
1
1.5
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Contents
Multi-Scenario DCN Solutions
Huawei Confidential
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Huawei Confidential
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NMS
A network may comprise many types of equipment such as OptiX RTN 605/620/910/950, OptiX OSN/PTN equipment,
and third-party equipment.
NM information about Huawei equipment passes through a third-party network or NM information about third-party equipment
A network may involve multiple networking topologies such as point-to-point, chain, star, ring, and supplementary
network to an optical network.
passes through a Huawei RTN network.
RTN 620
RTN 605
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What should we do in such complex DCN networking scenarios?
Third-party NMS
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Multiple topologies
Solutions to a network comprising Huawei
radio equipment and third-party radio equipment
Does an OptiX RTN network pass through a third-party network or a third-party network pass through an OptiX RTN network?
Is the point-to-point topology, chain topology, star topology, or ring topology adopted?
Any network is formed by point-to-point applications.
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BSC/RNC/aGW
NMS
OSN/PTN
OSN/PTN
Quick Reference
DCN solution:
In most scenarios, the HWECC protocol stack is preferred when a network comprises only Huawei radio equipment.
HWECC protocol stack
Multiple topologies:
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BSC/RNC/aGW
NMS
OSN/PTN
OSN/PTN
Quick Reference
DCN solution:
Adopt the inband DCN solutionusing IP protocol for an OptiX RTN 900 network that comprises the OptiX RTN 900 V100R001.
Inband DCN
Multiple topologies:
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BSC/RNC/aGW
NMS
OSN/PTN
E1/STM-1
OSN/PTN
Quick Reference
DCN solution:
Adopt the transparent transmission solution for an OptiX RTN 600/900 network that comprises the OptiX RTN 900 V100R001.
Transparent
Multiple topologies:
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BSC/RNC/aGW
NMS
OSN/PTN
E1/STM-1
OSN/PTN
Quick Reference
DCN solution:
When no service interfaces are available between two NEs, use extended ECCs to form an internal DCN.
Extended ECC
Network cable
Multiple types
of equipment:
Multiple topologies:
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Huawei Radio Equipment and
3
DCN Information of a Huawei RTN Network Passing Through a Third-Party Network
DCN Information of a Third-Party Network Passing Through a Huawei RTN Network
DCN Solutions to Typical Scenarios
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HW NMC
Analysis of the DCN Solutions to the Scenario Wherein DCN Information of a Huawei RTN Network Passes Through a Third-Party Network
Third-party network
RTN
RTN
RTN
How to connect HW NMS to third-party equipment and how to connect the third-party network to Huawei RTN network?
The DCN solutions are determined by the type of transmission channels that the third-party network adopts and the DCN solutions that the third-party network supports.
Passing through
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This option doesn’t suit for the OptiX RTN 900 V100R001.
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HW NMC
DCN Solutions to the Scenario Wherein DCN Information of a Huawei RTN Network Passes Through a Third-Party Network
Third-party network
The corresponding protocol converter is required.
No extra device is required but static routes need to be configured.
1
2
3
Inband DCN or FE transparent transmission
One FE port is occupied and no extra device is required.
Passing through
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Summary of the DCN Solutions to the Scenario Wherein DCN Information of a Huawei RTN Network Passes Through a Third-Party Network
Passing through
Auxiliary DCN Device
E1_Converter
The service bandwidth of 2 Mbit/s (one E1) is required and therefore third-party equipment needs to provide one E1 port.
2
E1_MUX_Converter
A minimum service bandwidth of 64 kbit/s is required and therefore third-party equipment needs to provide one E1 port.
3
E1_C_Converter
This converter is applicable to point-to-multipoint scenarios and requires FE pass-through.
4
5
Sharing DCN channels
None
The entire third-party network must adopt the IP over DCC protocol. In addition, routes need to be configured manually (this work is complicated) and data bandwidth needs to be calculated in advance.
7
None
The entire third-party network must adopt the OSI over DCC protocol. In addition, routes need to be configured manually (this work is complicated) and data bandwidth needs to be calculated in advance.
Ethernet pass-through
Router (required when NM information passes through an IP network)
Routers are used for data transfer between network segments.
DCC transparent transmission through the external clock interface
9
None
The E1 provided by the external clock interface carries DCN information (the OptiX RTN 605 does not support this DCN solution) and one E1 of third-party network is occupied.
Protocol
converter
Router
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
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Third-party NMC
Analysis of the DCN Solutions to the Scenario Wherein DCN Information of a Third-Party Network Passes Through a Huawei RTN Network
RTN
RTN
How to connect the third-party NMS to Huawei radio equipment and how to connect Huawei RTN network to the third-party network?
Passing through
Huawei radio equipment supports multiple DCN solutions, and therefore can transparently transmit information about third-party network easily.
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This option doesn’t suit for the OptiX RTN 900 V100R001.
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Page *
Huawei radio
Summary of the DCN Solutions to the Scenario Wherein DCN Information of a Third-Party Network Passes Through a Huawei RTN Network
Passing through
Auxiliary DCN Device
E1_Converter
The service bandwidth of 2 Mbit/s (one E1) is required and therefore Huawei radio equipment needs to provide one E1 port.
2
E1_MUX_Converter
A minimum service bandwidth of 64 kbit/s is required and therefore Huawei radio equipment needs to provide one E1 port.
3
E1_C_Converter
This converter is applicable to point-to-multipoint scenarios and is generally used with the preceding two protocol converters.
4
Huawei radio equipment needs to provide one G.703-compliant 64 kbit/s codirectional data port.
5
RS232_Converter
Huawei radio equipment needs to provide one RS-232 19.2 kbit/s data port.
Sharing DCN channels
None
Huawei equipment and third-party equipment need to support the IP protocol and interconnect with each other through management ports. In addition, routes need to be configured manually.
7
None
Huawei equipment and third-party equipment need to support the OSI protocol and interconnect with each other through management ports. In addition, routes need to be configured manually.
Ethernet pass-through
Router (optional)
Huawei equipment needs to provide one FE port. In addition, radio service channels of Huawei equipment are occupied and the channel bandwidth is determined by the DCN information of third-party equipment.
Third-party network
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
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E1/64K/RS232 etc
The protocol converter performs protocol conversion and point-to-point transmission.
In this scenario, protocol converters are used in pairs. That is, the number of protocol converters that are used in the NM center is equal to the number of protocol converters that are used at the remote pass-through point.
Advantages and disadvantages of the solution:
The advantage of this solution is simplicity. The disadvantage is that, in the case of multiple pass-through points, the number of protocol converters in the NM center is large and many transmission channels are occupied. Therefore, this solution is applicable to the scenario wherein only a few pass-through points exist.
NMS
Huawei Confidential
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Page *
Description of the scenario:
When multiple pass-through points exist, adopt the C-Converter that supports multiple inputs to reduce the number of converters in the NM center.
Advantages and disadvantages of the solution:
One E1_C_Converter is used with multiple E1_Converters. Multiple E1 channels, however, are occupied. Therefore, this solution is applicable to a network wherein E1 channels are sufficient.
ETH
Huawei Confidential
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
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Description of the scenario:
In practice, as E1 bandwidths are valuable, multiple protocol converters may share one E1; that is, each converter occupies one or several 64 kbit/s timeslots of the E1. As a result, the converters are cascaded.
Advantages and disadvantages of the solution:
DCN communication on the entire chain is implemented over one E1, and the E1_MUX_Converters consume fewer E1 bandwidths. This solution is applicable to a complex network.
Note: Currently, only the E1 protocol converter supports the cascading.
ETH NM signal
E1 network
E1 network
E1 network
LAN switch
Huawei Confidential
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Page *
Description of the scenario:
In actual operations, multiple E1 channels may be converged into one E1 channel. Specifically, the 64 kbit/s timeslots in use in the E1 channels are converged into one E1 channel. Similar to the NM center, the convergence point converges multiple directions into one direction. In this case, an E1_C_Converter is required.
ETH NMS signal
E1 network
E1 network
LAN switch
Huawei Confidential
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Page *
Description of the scenario:
An IP network is available between an OptiX RTN NE and the NM center. In this case, no protocol conversion is required. In addition, the live IP network and the OptiX RTN NE are located in different network segments in most cases. Therefore, it is recommended that you configure one router at each pass-through point and in the NM center for data transfer between the network segments.
IP network
IP network
LAN switch
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Contents
Multi-Scenario DCN Solutions
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Page *
Description of the scenario:
See the following figure. There are eight pass-through points and one E1 convergence point. The pass-through points form a tree
topology and each pass-through point needs to transmit NM information to the NM center. The chains on which NM information is
transmitted share one E1. On the chains, each interconnected point occupies one to several 64 kbit/s timeslots in the E1.
ETH
E1
E1
E1_MUX_Converter
E1_C-Converter
DCN solution:
Configure one converter for each pass-through point, one C-Converter for the E1 convergence point, and one C-Converter and one LAN
switch for the NM center.
NMS
E1
E1
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
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The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Page *
Description of the scenario:
In the case of a large-scale network comprising only Huawei radio equipment, divide the network into subnets and set a gateway
NE for each subnet. Group a maximum of 60 adjacent NEs into one subnet. See the following figure. The network is divided into
five subnets.
Note: If the HWECC protocol is adopted, one gateway NE can support a maximum of 100 non-gateway NEs.
DCN solution:
Configure one LAN switch and one E1_C-Converter for the NM center, and one E1_Converter for each subnet.
ETH
E1
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Content Page Title 35-40pt Color: R153 G0 B0 Corporate Font: FrutigerNext LT Medium Font to be used by customers and partners: Arial Content Page Text : 28-30pt Bullets level 2-5 20-30pt Color:Black Corporate Font: FrutigerNext LT Medium Font to be used by customers and partners: Arial
Contents
Multi-Scenario DCN Solutions
Huawei Confidential
Slide title :32-35pt Color: R153 G0 B0 Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial Slide text :20-22pt Bullets level 2-5: 18pt Color:Black Corporate Font : FrutigerNext LT Medium Font to be used by customers and partners : Arial
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FAQs
A: Visit The description of Protocol Converter on website 3ms.
Q:Why hybrid network with a third party recommended protocol converter?
A: If possible, you can also use the Ethernet transparent transmission DCN information.but in the existing TDM microwave network, Ethernet ports are scarce, generally no Ethernet interface, in most cases need to use protocol converters for conversion information transmit DCN. If you are using the Ethernet network to allow transmission through the DCN information, will be a very good program.
Q: Where are documents about DCN solutions available, except for this slide?
A: Download documents about DCN solutions from website 3MS.
Document Name
OptiX RTN 600 NMS Transparent Transmission Solutions via Third Party
3MS
3MS
OptiX RTN DCN documentation – Hardware Interfaces and Solutions V1.0 (20090814)
3MS
3ms
OptiX RTN Pre-Sales and After-Sales DCN Pass-Through Planning Guide V1.02
3ms
Qx, MML, Web LCT