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NVO3 Anycast Layer 3 Gateway dra3-‐hao-‐nvo3-‐anycast-‐gw-‐00
July 2014 1 NVO3 Anycast Gateway
Weiguo Hao(Huawei) Lucy Yong(Huawei) Yizhou Li(Huawei) Feng Wang(H3C) Wade Shao(Tencent) Vic Liu(China Mobile)
[email protected] [email protected] [email protected]
[email protected] [email protected]
July, 2014 Toronto Canada
NVO3 Network
IP/MPLS WAN
Scenario
NVO3 Anycast Gateway July 2014
NVE1 NVE2 NVE3
GW1 GW2
TS1
TS2
TS3
TS4
TS5
TS6
The traffic which goes through centralized gateway includes: 1. In/out DC traffic 2. In no distributed gateway case, inter-‐VNs traffic.
Prone to be bo\leneck
Anycast layer 3 NVO3 gateway is to improve gateway scalability.
IP/MPLS WAN
L3 Anycast GW Solu4on
July 2014 NVO3 Anycast Gateway 3
NVO3 Network
NVE1 (192.168.1.1
)
NVE2 (192.168.2.1
)
NVE3 (192.168.3.1
)
GW1 (192.168.6.1
)
GW2 (192.168.6.1
)
TS1
TS2
TS3
TS4
TS5
TS6
Anycast gateway
VN IF 1(gateway interface for VN 1) Gateway Ip/mask:
10.1.1.1/24
VN IF 2(gateway interface for VN 2) Ip/mask: 20.1.1.1/24
10.1.1.2 20.1.1.2 10.1.1.3 20.1.1.3 10.1.1.4 20.1.1.4
VN 1 VN 2
Flow-‐based traffic load balancing among all
GWs
ARP Handling: L2 VN
July 2014 NVO3 Anycast Gateway 4
NVO3 Network
NVE1 (192.168.1.1
)
NVE2 (192.168.2.1
)
NVE3 (192.168.3.1
)
GW1 (192.168.6.1
)
GW2 (192.168.6.1
)
TS1
TS2
TS3
TS4
TS5
TS6
10.1.1.2 20.1.1.2 10.1.1.3 20.1.1.3 10.1.1.4 20.1.1.4
NVA NVA pushes TS/NVE mapping to each GW
NVA pushes TS/NVE mapping , anycast
gateway IP/MAC and outer IP mapping to
each NVE
ARP Request
ARP Reply
ARP Proxy
Comparison between VRRP and anycast gateway solu4on
July 2014 NVO3 Anycast Gateway 5
Dimension VRRP Anycast gatway solu4on
Network bandwidth usage
Low High
Keep alive workload VRRP Session per VN No
Network resilience VRRP Switchover Underlying network convergence
Next Steps
July 2014 6 NVO3 Anycast Gateway
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