[c-nsp] Multicast group but no traffic

[John Neiberger]

Also, if this is XR, a really nice way to verify ingress and egress traffic
is like this:

show mfib hardware route statistics <source> <group> location <location>

If this is an ASR9K, you can use "show drops" if the traffic is dying on
your router interface. If it's CRS and it's being dropped on your router,
you'll have to use the various "show controllers" commands to find it.

John


On Fri, May 9, 2014 at 11:58 AM, John Neiberger <jneiberger at gmail.com>wrote:

> If you see an mroute for it but the traffic is not arriving, either the
> upstream router isn't sending it to your or the TTL is expiring. If this is
> IOS, check "show ip traffic" for the bad hop count and see if it's rapidly
> increasing. If it is, the TTL is expiring at your hop. Also check for ACLs
> that could be blocking it. You may also have an RPF problem in certain
> weird cases. Do "show ip rpf <source>" and make sure it shows the interface
> you expect.
>
> John
>
>
> On Fri, May 9, 2014 at 11:53 AM, Scott Voll <svoll.voip at gmail.com> wrote:
>
>> I'm working on rolling out my Multicast across my WAN.
>>
>> I can see the Multicast group on the WAN router and I can see it on the
>> switch interface, but I'm not getting the traffic.  What should I be
>> looking at?
>>
>> TIA
>>
>> Scott
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