Multicast Routing required.

[Dipesh Patel]

Dear Experts,

Please find the topology Dia.

`

How can I configure multicast routing in this case? Will I need to configure what at which device. I have never worked on multicast routing before.

The aim is : Multicast Address (224.0.0.112 and 224.0.0.113) are assigned for the specific Application group. receviers. Hence Source from the intracnet no need to send pks to all instead host will send pakt to multicast address so it will reach to all receivers which is in group.

Please suggest.

The tast I have to do is :

1. two uniqie multicast IP need to be provided from 224.0.0.1 - 255. Which IP I can give?

2. Multicast need to be enable on NIC of all  related servers. How?

3. Communication between Hosts in intranet and these multicast IP address.: How?

Please do the needful

Regards,

[Dipesh Patel]

Dear Experts,

Please reply.

Regards,

[Marwan ALshawi]

Hi there

Your topology looks straight forward fornenabling multicasting but you need to be aware of couple of things

First you need to check with your service provider if they do support sending multicast over their mpls and if they not or notneasy to get it done just configure gre tunnel between your wan edge routers to pass the multicast traffic over it

Things to do

1- enable multicast routing on very layer 3 device in the path including the core switches

2- enable igmp snooping in the access switches if they are layer 2 switches only

3- use use pim spares mode for multicasting

4-configure one pim RP for groups 224.0.0.12 and .13 in the site where those servers located

5- configure another PIM RP for group .14 in the other sitenwher the server located

6- configure one of your wan edge routers as mapping agent

7- add gre tunnel between the wan routers and enable multicast on the gre interface not the wan interface

Useful links

http://www.cisco.com/en/US/tech/tk828/technologies_tech_note09186a0080094821.shtml

http://www.cisco.com/en/US/docs/ios/solutions_docs/ip_multicast/White_papers/rps.html

You use the terms above to search for configuration example of each part

HTH

If helpful rate