09-06-2013 01:27 AM - edited 03-07-2019 03:19 PM
Hello !
When you have a vlan with multicast senders, how to have a router interface on this vlan to forward the multicast trafic, and without unicast routing.
Before, with IP of senders in 10.1.23/0/24 , on a (old) 6500, this config works fine:
interface vlan 123
ip address 192.168.123.1 255.255.255.0
no ip proxy-arp
ip pim sparse-mode
ip cgmp
ip mroute 10.1.23.0 255.255.255.0 192.168.123.1
But, now, "ip mroute 10.1.23.0 255.255.255.0 192.168.123.1" is not permited (same router).
I will be happy to have the trick to do that again...
JM Tetu
09-11-2013 04:25 PM
What do you mean by "ip mroute x.x.x.x x.x.x.x" is not permitted.
waht is show ip route 10.1.23.0 looks like ? What is the group address multicast traffic sending to ?
also provide us "show ip pim rp mapping"
Rasika
09-12-2013 02:16 AM
Thanks for your help !
I give a graph for better explain my problem.
The multicast trafic can not be routed like unicast (A Wifi Lan Controller stop it).
So, the "show ip route 10.1.23.0" give a route (and unicast works very well), but i cannot use it. I try to have an multicast only interface.
Now, i add temporary a cisco 1841 router. It's the RP give by "show ip pim rp mapping".
It woks fine. But it's a patch-up job....
VSS#show ip pim rp mapping
PIM Group-to-RP Mappings
Acl: 8, Static
RP: xxxx (?)
Acl: 9, Static
RP: xxxx (?)
Acl: 7, Static
RP: xxxxx (?)
Group(s): 224.0.0.0/4, Static
RP: 192.168.123.2 (?)
On the multcast router:
interface fa 0/0
ip 10.1.23.253 255.255.255.0 secondary
ip 192.168.123.2 255.255.255.0
ip pim sparse-mode
==> As i have on the 1841 an IP in the same network than the multicast sender, it's forwarding the multicast. And as it's not the IP of gateway of the sender....
If i can find a solution to suppress the 1841, it will be very better.
09-12-2013 02:36 AM
Thanks alot fo the diagram & additional detail. Diagram is really helped to understand your network better.
still i have few question prior to give your some recommendation
1. Is this Ghost client connect via wired or wirelessly ?
2. What is the WLC model & what version of software it is running (if it is a cisco WLC then you can enable multicast on that & I can help if that is an option for you)
HTH
Rasika
09-12-2013 03:02 AM
The ghost client connect via wired.
The WLC is a Cisco 5508. The software Version is 7.2.111.3.
And multicast on wired guest lan with a cisco WLC is an option for me.
It will be very more simple!
09-12-2013 04:51 AM
Hi Jean,
I will test this (wired guest + multicast on WLC) & let you know. I think you may have a better solution that what you are doing today to get this working
HTH
Rasika
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