RE: basic multicast query

Hi,

AFAIK igmp snooping is on per default on cisco switches.
If the senders and receivers are not only on the same VLAN but on the same
switch, you should not have to configure anything.

If however senders and receivers are on different switches, you have to
make sure that multicast packets are correctly forwarded between switches.

AFAIK you have multiple possibilities to do this:
- disable igmp snooping on the switches (thus delivering multicast packets
per broadcast which stresses the network as much

the better approach is to have an igmp querier on the network
you can
- configure igmp querier on the switch(es)
- configure pim on one router in that vlan even if it does not do any
multicast routing

Cheers,
Christian

On Thu, 2 Jan 2014, AKHILESH wrote:

> Dear Imran,
> If both the server and client are on the same vlan, the multicast traffic from
> server will reach client without doing anything. Ofcourse this will lead to
> lot of braodcast in switched network.
> One way to reduce is to use IGMP snooping where switches will find out where
> the interested clients are and only forward on those ports.
> Remember there is no need of S,G when client and server are in same vlan and
> router has very limited role.
>
> Regards
> Akhilesh
>
>> CC: ccielab_at_groupstudy.com
>> From: anthonybonilla.ccie_at_gmail.com
>> Subject: Re: basic multicast query
>> Date: Thu, 2 Jan 2014 01:24:16 -0500
>> To: immrccie_at_gmail.com
>>
>> Wouldn't IGMP snooping take care of it by itself?
>>
>> Sent from my iPhone
>>
>>> On Jan 2, 2014, at 12:00 AM, Imran Ali <immrccie_at_gmail.com> wrote:
>>>
>>> Hi team ,
>>>
>>> if we have multicast clients and server on same vlan , the set up is
>>> going to work ? without using.
>>> advance config like MVR ?
>>>
>>> i know we can use broadcast , but the app is tuned to send muticast
>>> traffic . .
>>>
>>> will the tree S,G can receive on same SVI and flood it back to same
>>> vlan ?
>>>
>>>
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>
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Received on Thu Jan 02 2014 - 09:17:23 ART