Hi Rob, Did you mean to say you have IGMP static-groups on the 7600_3 to attract multicast traffic toward your distribution switches?
If you meant 7600_1 then I'm not sure what your topology is but the redundancy issue made me think of a similar issue I faced in the past. Are you using any static routes (or mroutes) on 7600_3 to the multicast source? I think your multicast trafic must have failed RPF check when the link between 7600_1 and 7600_2 failed. Using "show ip mroute count" you can maybe check your "Other counts" counters to confirm this. The RPF failed counter should be high. WS-C6506#show ip mroute 232.32.1.1 10.154.128.58 count IP Multicast Statistics 785 routes using 396312 bytes of memory 362 groups, 1.16 average sources per group Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc) Group: 232.32.1.1, Source count: 1, Packets forwarded: 630315119, Packets received: 630659870 Source: 10.154.128.58/32, Forwarding: 630315119/393/1344/4230, Other: 630659870/0/344751 PIM is protocol independent and depends on CEF/RIB so if OSPF converges then PIM should converge as well. Hope this helps. Cheers, JF Jean-François Dubé Technicien, Opérations Réseau IP Ingénierie Exploitation des Réseaux Vidéotron "cisco-nsp" <[email protected]> a écrit sur 2014-02-03 17:39:44 : > De : Robert Hass <[email protected]> > A : "[email protected]" <[email protected]>, > Date : 2014-02-03 17:47 > Objet : [c-nsp] PIM and network redundancy > Envoyé par : "cisco-nsp" <[email protected]> > > Hi > I have project where network looks like this: > > IPTV source > | > 7600_1------------ > | | > | | > 7600_2 | > | | > | | > 7600_3------------- > | > IPTV distribution switches (~20 VLANs) > > I'm currently using PIM static joins on first 7600 next to the source and > classic PIM spare-mode (ip pim spare-mode) sessions between rest 7600 and > 'pim passive' from 7600 to IPTV distribution switches. First 7600 is my RP. > > My question is how I can provide redundancy in this network. I had issue, > when link between 7600_1 and 7600_2 was down, and traffic switched to link > 7600_1--7600_3. IPv4 works without problem as OSPF use backup path. > > But how deal with PIM and multicasts ? Intergrate MSDP or other protocol ? > Any recommendations ? I think about creating xconnect (L2VPN over MPLS) > from first 7600_1 to 7600_3 and put additional Cat6500 on the end as PIM > box. > > Rob > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
