04-13-2012 04:53 PM
We have LDP looping in network. Can somebody help me to understand how Juniper implemented LDP looping prevention and detection of MX Routers? What configuration I need?
04-14-2012 08:51 PM
What i know is that LDP itself does not have a loop prevention mechanism, it sets up a LSP based on IGP shortest path, so it depends on IGP to provide loop prevention mechanism.
Hope that will help you.
04-16-2012 05:40 PM
Thanks for your replay!
I have enabled LFA(IP FRR) in our network. That is why we have two best routes but LDP and IGP have different routes.
I expected IGP route is selected instead of LDP route.
x.x.x.x./32 *[LDP/9] 00:29:38, metric 681
> to x.x.x.101 via ae2.0, Push 700000 ------------->Do not know why LDP pick up ae2. 0
[OSPF/10] 18:41:04, metric 681
> to x.x.x.121 via ae1.0 --------------------> this one should be selected
to x.x.x.101 via ae2.0