Do you have pim or igmp snooping turned on? Without a layer 3 "multicast router" configured, the 6509 will probably shunt the traffic. Setup a SVI interface on that vlan and enable pim dense mode. If you don't want multicast to pass the layer 3 boundry, you can setup a multicast boundry command on the vlan.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ambedkar Sent: Tuesday, October 30, 2012 2:23 AM To: [email protected] Subject: Re: [c-nsp] Multicast packets dropping at 6509 Hi, Phil Mayers: 1. Data rate: 4 kbps 2. Line cards: 1000BaseX supervisor WS-X6K-S2U-MSFC2 1000BaseX Ethernet, WS-X6408A-GBIC CatOS 8.3 Matthew: 1). As we are in the same VLAN, the data is not going to Lyaer-3 2). we are using, pim-dense Null: we are not observing such kind of behaviour. what we are observing is that one of the switch is not creating any multicast table, when we see in the mac-address table multicast, there is no multicast table. when we replace Cisco 6509 with cisco 2950 switch it is working fine. thank you On Mon, Oct 29, 2012 at 11:08 PM, null zeroroute <[email protected]>wrote: > I'm familiar with a bug CSCsk07136 that was found about 4 years ago that > causes the multicast table to dump on a hybrid 6500 (catos) every time a > port in the same VLAN went down/up. Basically, all members of a group > would lose access to the group every time a port in the same VLAN, on the > same 6500, dropped. I believe the problem was fixed in a later release, > however we upgraded to native and no longer experienced the issue. The > only workaround was to statically assign hosts to the required groups. > > > On Mon, Oct 29, 2012 at 6:18 AM, Ambedkar <[email protected]> wrote: > >> Hi, >> I am facing a problem in multicast.. >> The scenario is like this, 2 layer-2 switches(2950) and 1 Layer-1 >> switch(cisco 6509). >> These three switches are connected in series, L2-L3-L2. The problem is the >> packets are dropping at L3(Cisco 6509) switch using catOS. The multicast >> data is flowing in SAME vlan, means eventhough L3 is there in between, the >> data is flowing at layer-2 only. >> >> Please help me... >> >> Thanks, >> Ambi >> _______________________________________________ >> 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/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
