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Network Admin
Beginner

MultiCast Network Configuration for Paging Server (Informacast)

We have a new setup , where we have  :-

1. Informacast Paging Server in Vlan 10  of Core Switch  ( Paging Server IP : 10.10.10.18 )

    ------ Server Vlan SVI IP Address  -  10.10.10.1 (Core Switch 6509 )

2. IP Phones in Vlan 20 of Access Switches ( 3750 Access Switches Connected to Core Switch 6509 by TRUNK )

    ------  Voice Vlan SVI IP address  - 10.10.20.1 ( on Core Switch 6509 ) and no Voice vlan SVIs on 3750 access Switches.

    ------  3750 Access Switches are connected to 6509 Core Switch by Trunk Port.

Need to configure Multicasting from Paging Server(Vlan 10)  to IP Phones (Vlan 20) . Can anyone give a simple and clear configuration for this ?

4 REPLIES 4
jzellner
Enthusiast

russ.carter
Beginner

I managed to get this working by configuring PIM (passive, sparse or dense mode) on the server and phone VLANs (VLANs 10 and 20 in your case) and configuring a RP address of the SVI in the phone VLAN (ip pim rp 10.10.20.1 in your case) Plus turn on multicast routing of course.

Hope that helps.

can you elaborate and give the exact commands which you ran

Below is the configuration: 

On Core or Layer-3 Switch:

Core#config t
Core(config)#ip multicast-routing
Core(config)#
Core(config)#interface vlan10
Core(config-if)#ip address 10.10.10.1
Core(config-if)#ip pim sparse-dense-mode
Core(config-if)#ip igmp version 3
Core(config-if)#
Core(config-if)#interface vlan20
Core(config-if)#ip address 10.10.20.1
Core(config-if)#ip pim sparse-dense-mode
Core(config-if)#ip igmp version 3
Core(config-if)#
Core(config-if)#exit
Core(config)#
Core(config)#ip pim rp-address 10.10.10.1
Core(config)#
Core(config)#ip pim rp-candidate vlan20
Core(config)#
Core(config)#end
Core#

 

Depending on the test results, you may need add below configuration on Layer-2 Switch where IP Phones are connected:

On Layer-2 Switch:

Access#config t
Access(config)#ip igmp snooping
Access(config)#end
Access#

Please rate helpful posts and if applicable mark "Accept as a Solution".
Thanks, Vaijanath S.
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