[c-nsp] Need help with setting up ip multicastrouting

[Phil Mayers]

On 10/12/2010 09:46 PM, Gert Doering wrote:
> Hi,
>
> On Tue, Oct 12, 2010 at 02:59:28PM -0500, Christopher.Marget at usc-bt.com wrote:
>> The switch listens to the following messages in order to detect router ports with IGMP snooping:
>> · IGMP Membership query send to 01?00?5e?00?00?01
>> · PIMv1 hello send to 01?00?5e?00?00?02
>> · PIMv2 hello send to 01?00?5e?00?00?0d
>> · DVMRP probes send to 01?00?5e?00?04
>> · MOSPF message send to 01?00?5e?00?05 or 06
>
> Thanks for clarifying this.  Indeed, with this information, IGMP snooping
> should never be harmful for router-switch-router traffic.

That is not my experience.