[c-nsp] Is there a command to check which BGP ingress policy drops the received prefix in Cisco ASR routers?

[Adam Vitkovsky]

> Mark Tinka
> Sent: 10 August 2015 10:51
> > However, inbound policy for this BGP neighbor is built of dozen other
> > route-policies using the "apply"(executes a policy from within another
> > policy) statement. I was hoping that maybe there is a command which
> > displays exactly which route-policy drops the prefix.
>
> Hmmh, don't know of such a command in any router OS code. You'll just
> have to go through the entire policy, line by line.
>
> I know Junos has the ability for you test your policies against the
> routing table to see what they match. Don't know of such a command in
> IOS XR, although I'm not sure it would help in this case.
>
There is the "show ip bgp route-map" in vanilla IOS and "show bgp policy route-policy" in XR.

And with regards to Martin's question there's the "sh bgp ipv4 unicast neighbors <neighbor-address> received prefix-filter <filter-name>" cmd to at least help you find/rule out prefix-filter responsible for the prefix blocking.


adam


        Adam Vitkovsky
        IP Engineer

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