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I have the following topology:R1--------R2=======R3R2 has two paths to reach R3 (lets call one link as "main link" and other link as "bypass link")There is MPLS-TE tunnel configured from Headend(R1) to tailend(R3)This tunnel only has one path (strict...
Folks,I have read through IETF drafts and Cisco / Juniper documentation on BFD. However I am not clear on the following:Lets say we have one-hop IP BFD configuration:R1====L2-network===R2Lets say Asynchronous BFD mode is configured between R1 and R2 ...
Folks,Scenario:CE1-----PE1=====P1=====P2=====PE2-------CE2Lets say CE1 and CE2 are doing L2VPN and all hops between PE1, P1,P2 and PE2 have more than one equal cost paths (ECMP).I am trying to ascertain a way of knowing what path the EoMPLS traffic w...
Folks,RFC 4105 states:"The use of IGP shortcuts MUST be precluded when TE-LSP head-end andtail-end LSRs do not reside in the same IGP area. It MAY be usedwhen they reside in the same area.The advertisement of an inter-area TE LSP as a link into the ...
MPLS TE FA requires bidirectional LSPs but I havent been able to get sufficient reasoning as to why it needs bidir LSPs(I read that CSPF does some bidir checks before installing it but I need some more insight into this)Anyone has more detailed knowl...
I have got the answer after some investigations.For those interested in this topic, the behavior described in the initial post is expected behavior especially when the Headend has only one explicit-path configured so in case of failure on a hop (afte...
Hi,Efficient replication of Multicast traffic on layer-2 VPLS domains is still a challenge IETF is working on - at the moment unfortunately it is sent as a broadcast in VPLS.There are few internet drafts namely the "Simon/Raymond" one and another wh...
And in regards to the "Link Data" contained in the LSA, I still donot see it to be the same as the SNMP MIB IFINDEX, see below:===============================R3-PE#sh snmp mib ifmib ifindex Tun35 Interface = Tunnel35, Ifindex = 8R3-PE#sh ip...
To clear out confusion around one-hop TE and whether or not a reverse identical adjacency is required or not, Ihave found the answer in the RFC 2328 (as Ivan rightly previously pointed me to this):Section:16.1. Calculating the shortest-path tree for...
Thanks for replying Rich.For back-to-back connected routers:[A] ---- [B]If we have one-hop TE from A -> B, but nothing in the reverse direction, you mentioned that the TWCC is satisfied because of the physical link.But whats confusing me is that the ...
