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antleo
newbie
Topic Author
Posts: 47
Joined: Thu Dec 19, 2019 3:27 am

Chr not forwarding despite having a route

Sat Jul 03, 2021 4:31 am

All, I seem to be having a problem with a chr. It doesn't seem to want to pass traffic selectively. In this case it is icmp replies from Google dns. I've got a wan router into the Chr on ether1 vlan 201, and a ccr on vlan 202 2 hops from the destination. The Chr and ccr are running mpls, I see the packet enter on 201 when I torch the interface, but it seems to be dropped after that. I verified there is a route and an mpls label. I've checked firewall rules, even set an allow all rule, but that didn't make a difference. Other packets seem to flow fine, but some get dropped for whatever reason. What could be causing this and what are some things to look at to fix this?
 
antleo
newbie
Topic Author
Posts: 47
Joined: Thu Dec 19, 2019 3:27 am

Re: Chr not forwarding despite having a route

Wed Jul 07, 2021 12:55 am

It appears that the CHR which should have been adding the mpls tag wasn't. I enabled MPLS on the edge router, which added the label, the CHR forwarded it on without a problem.

I'm not sure why this is the case, there is a label in the remote binding table.

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