Assuming that you have IGMP disabled on all switches, there’s nothing to-do. The Multicast frames will be flooded out to all ports in the VLAN.

Cheers!

What is the procedure to configure multicast on a VLAN where the Server and Clients reside in the same VLAN. I have one ERS 8600 with 15 ERS 4500 Series switches. This setup is for IPTV in a Hotel environment. Please help out on this.

Best regards,
Ganesh

Thanks for such a prompt response , i think what i really need to know by default will mulicast pass accross the IST. Or what has to be done to allow mulicast go across. Have you come across any problem running SMLT, IST and CC6 as i read on other sites that some people had been experiencing problems , do you know of any. As the problem i’m having is driving me mad. Thanks for help and really find your site so useful.

Kind regards

Declan

Yes, you can have multicast running across the IST. Nortel’s Contact Center (CCMA/CCMS) using multicast for a few different things. The important thing to remember here is that it’s just multicast. The configuration is not specific to CCMA/CCMS but works for all multicast applications in general. The only thing specific to CCMA/CCMS is the multicast address it’s using. You’ll need to define that with your ERS8600 configuration as a RP if your using PIM-SM.

I’m not sure if you are aware but you could just through all the clients/servers in the same VLAN, disable IGMP and you wouldn’t need to-do anything else to get everything working. Anyways there’s quite a bit of information available on Nortel’s website that should be of help.

I’ve included a link below to the support topologies and interoperability that tells you exactly what designs are supported with regard to SMLT.

http://www.michaelfmcnamara.com/files/2008_07_21_Switch_Clustering_Supported_Topologies_and_Interoperability_with_ERS_NN48500-555_Version1200.pdf

Good Luck!

Have a two part question, when configuring an 8600 core running IST and SMLT to the edges (5510 and 5520), by default is multicast running across the IST. I ask as I seem to be experiencing problem with CCMA and CCMS and multicast, well at least there is a perception that is a multicast problem. I have pim running global on the 8600′s and enabled on the vlans also. On the edge I’ve enable igmp also.

Is there a standard way to set up your 8600 and 5500 when using CCMA and CCMS? I’m not a voice guy and need to get to bottom of a issue that’s happening in regard to resilience testing for CCMA and CCMS.Where the CCMA and CCMS are connected to a 5500 SMLT’d to two 8600. I’ve read in other sites that there appeared to be a problem with SMLT, IST and CC6 do you know if this is the case.

Kind of disjointed post sorry about that but any help appreciated

Declan

Unfortunately DVMRP is not yet available (and may never be) for the ERS 8300 switch. You’ll need to use PIM-SM to facilitate inter-VLAN multicast traffic.

I would suggest you look at the second article I posted on this topic titled Multicast Routing Protocol (Part 2). In that article I discuss how to configure PIM to communicate across multiple switches although it can also be used to communicate across VLANs in a single switch. If you follow the guide (syntax might be a little different on the ERS 8300) you should be fairly successful. As I suggested in this article you can use VLC to test your multicast configuration ahead of time so you don’t impact you production Contact Center environment. If you believe the configuration is correct you might also need to look into the IGMP configuration. You may need to disable IGMP within the VLANs you’ll be working with or on the edge switches that you might be touching.

Good Luck!

I have been meaning to try and clean up the formatting of this post. It got all messed up when it was imported from Blogger. Perhaps I’ll try and get around to that soon!

thom