Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Rebroadcast Multicast possible?

Hi,

I have a 6509, SUP 720. Latest IOS.

Two VLANS: 10 and 20.

10.10.10.254 is the vlan 10 interface.

192.168.1.254 is the vlan 20 interface.

I have a user shooting multicast with a TTL of 1 into vlan 10. Unfortunately the TTL is hardcoded into this custom application and is unchangeable.

I need a way of routing this traffic into VLAN20 via IGMP/MC routing. There is the possibility that there will be future routers/switches hanging off of vlan 20 whom may have users who want this multicast.

I've read Google'd like crazy and read Cisco's docs on multicast regarding thresholds, IGMP snooping etc..I've experimented but to no avail. I tried an "ip igmp join ..." on vlan 20, it joins but my hosts still cannot IGMP request the stream.

Am I up the creek without a paddle?

thanks for any help,

Mark

2 REPLIES
Cisco Employee

Re: Rebroadcast Multicast possible?

Mark,

Unfortunately, I can't think of any easy way to do that.

If it is just these two VLANs, you could attach the multicast server to both VLANs.

Regards

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México 
Paseo de la Reforma 222 Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
New Member

Re: Rebroadcast Multicast possible?

Thank you, that's what I thought!

114
Views
5
Helpful
2
Replies