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peer next-hop-invariable

peer next-hop-invariable

Created: Apr 7, 2020 18:09:17Latest reply: Apr 8, 2020 03:35:37 623 2 0 0 0
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Hi Gents,


As "peer next-hop-invariable" command we used in MPLS Option C scenario

without this command below is the problem


(PE1 is the egress of the BGP LSP, the VPNv4 or VPNv6 route on PE2 fails to recurse to the BGP LSP and packets fail to be forwarded over the BGP LSP)


can anyone explain me this in details?Thanks

peer next-hop-invariableMPLS VPN Option C

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sohaib.ansar
Created Apr 7, 2020 23:07:20

HI User,
In the inter-AS VPN option C networking where RRs are used, the peer next-hop-invariable command needs to be run to prevent the RRs from changing the next hop address of a route when the RRs advertise the route to EBGP peers. This ensures that the remote PE iterates a route to the BGP LSP destined for the local PE during traffic transmission.

For more information please visit below website.
https://support.huawei.com/enterprise/en/doc/EDOC1100028526?section=j059&topicName=configuring-bgp-route-attributes
Thanks.
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sohaib.ansar
sohaib.ansar Created Apr 7, 2020 23:07:20

HI User,
In the inter-AS VPN option C networking where RRs are used, the peer next-hop-invariable command needs to be run to prevent the RRs from changing the next hop address of a route when the RRs advertise the route to EBGP peers. This ensures that the remote PE iterates a route to the BGP LSP destined for the local PE during traffic transmission.

For more information please visit below website.
https://support.huawei.com/enterprise/en/doc/EDOC1100028526?section=j059&topicName=configuring-bgp-route-attributes
Thanks.
View more
  • x
  • convention：
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chenhui
chenhui Admin Created Apr 8, 2020 03:35:37

Hi @LSA
Kindly share us your scenario.
Thanks.
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