[c-nsp] Multicast group but no traffic

[Scott Voll]

VLC Player with TTL 10.  Connected to 3560 to Nexus 55xx with Layer 3.
 connection to 3845 over WAN to remote site, to 2911 to 2960 layer 2 switch.

I can see on Nexus, 3845 and 2911 the IP Mroute for the group I'm sending.
 Via a packet capture I can see the multicast local to the Nexus on
multiple vlan's

I can see on the 2960 the groups and interfaces.  But a wire capture on the
local PC all I see is the join packets, no traffic.

Other ideas?

Scott


On Fri, May 9, 2014 at 11:28 AM, Phil Mayers <p.mayers at imperial.ac.uk>wrote:

> On 09/05/2014 18:53, Scott Voll 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?
>>
>
> That's a bit vague. John has made some good suggestions but you'd get more
> specific answers if you can specify the topology in detail.
>
> How are you determining you're not "seeing" the traffic? No video at
> receiver app? If so, check again with tcpdump/wireshark and look out for
> software firewalls. That one catches me a lot - I always forget iptables on
> my laptop :o(
>
> "sh ip mr active" and "sh ip mr count" are useful at L3 hops. L2 hops are
> far harder to debug, unfortunately.
>
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