[c-nsp] send multicast over non-multicast-enabled switch

victor vitya at list.ru
Wed Sep 30 02:40:43 EDT 2009


Thank you Arie
It indeed works through GRE though linux box doesn't want to respond to  
IGMP query. But I hope I'll fix it.
As for getting a new connectivity module the question is all about money  
or lack of it.

On Mon, 28 Sep 2009 23:52:21 +0400, Arie Vayner (avayner)  
<avayner at cisco.com> wrote:

> Victor,
>
> You could actually use GRE for that. The 7600 can do GRE in hardware
> (assuming you have Sup720 and up).
>
> You need to make sure that the multicast source would be an IP routed
> through the GRE tunnel on the 7600, or else you would get RPF failures.
>
> I would say the best practice would be to get a switch that can handle
> multicast, and the above would be a workaround.
>
> Arie
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of victor
> Sent: Monday, September 28, 2009 19:28
> To: cisco-nsp at puck.nether.net
> Cc: cisco-nsp at puck.nether.net
> Subject: [c-nsp] send multicast over non-multicast-enabled switch
>
> Hi.
> I was assigned with a task to set up a video streaming server and use a
>
> blade server for it. The problem is that the network connectivity module
>
> for the blade chassis is not dotQ multicast aware and simply drop all
> the
> 224.0.0.0/4 data. What options do I have to get the traffic through? I
> am
> thinking may be it is possible to encapsulate the stream into gre and
> then
> safely transport it to the RP? Or may be I can send it as unicast and
> then
> convert it somehow into multicast? Is there a best practices guide for
> this matter?
> The blade runs Linux and over the trunk connected to the RP which is
> Cisco
> 7604.
>


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