Multicast In a WISP setup

RouterOS Forwarding Protocols
1

Hey All,

After spending quite some time now working on multicast systems and setups that I want to trial I’ve hit a rather large brickwall that I’m having no luck with.

I have managed to get multicast working with a core MT router that has a VLC server connected and streaming to 232.0.0.1, I have attached a computer to another interface on the same router and got the Multicast stream to play. I then connected another MT router acting as an AP to the core MT router and connected off that AP and got the Multicast stream to play. I have then attached a MT CPE to this AP and attempted to play the Multicast stream which is where it fails.

I’m getting a error in the AP logs to do with PIM:

Join/Prune Entry for group 239.255.255.250 RP address does not match: router RP = 172.16.1.1 message RP = 172.16.3.1

This is a visio layout of my testing lab right now, I need to be able to have multiple AP routers attached to the core and have the CPE get multicast without having to vlan/layer2 the CPE back to the core. Does anyone have any ideas? I’m really quite stuck

2

It seems if i change the CPE RP to 172.16.1.1 and do a static route/masq nat on it I can get it to work which I’ll use for the time being untill a better soulution comes along from testing/here

The next question I have if about WDS+Multicast, our current setup is that clients off our AP use WDS which creates a number of interfaces for each client on the AP. Is it possible to run multicast on the AP interface to all clients without having to turn off WDS?

3

if you have non-overlapping local areas that are NATed, you can add this network in MRIB. as result it can be reachable even if it not through routing.

4

Thanks for the reply! I will give that a try in the lab tomorrow, Any idea about my wireless+wds+mcast question?

5

wds most probably means bridge, and you can find a lot of about that on the forums.

best try is to either make tunnels or bridge firewall to drop