Multicast stub routing + NAT
Posted by hcsteve on 2011/12/23 15:21:59
I have an application using multicast routing on a Cisco router that I'm trying to move to a CentOS-based router instead. The current application (VoIP paging) works as follows:
* VoIP PBX sends a unicast UDP stream to a particular unicast IP address and port on the router
* Router NATs the destination to a multicast address (224.168.168.168)
* Router sends the multicast stream to a group of VoIP phones which are attached to the router via a layer-2 ethernet switch
This works fine on the Cisco router by configuring "ip igmp static-group 224.168.168.168" on the ethernet port connected to the phones. I'm trying to figure out how to accomplish the same thing in CentOS. Any ideas?
* VoIP PBX sends a unicast UDP stream to a particular unicast IP address and port on the router
* Router NATs the destination to a multicast address (224.168.168.168)
* Router sends the multicast stream to a group of VoIP phones which are attached to the router via a layer-2 ethernet switch
This works fine on the Cisco router by configuring "ip igmp static-group 224.168.168.168" on the ethernet port connected to the phones. I'm trying to figure out how to accomplish the same thing in CentOS. Any ideas?
This Post was from: https://www.centos.org/newbb/viewtopic.php?forum=58&topic_id=34897&post_id=150177