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09-20-2017 01:36 PM
09-20-2017 01:36 PM
Multicasting
Hey guys,
So I have a requirement to enable IGMP for video devices sitting in two different VLANs, let's say I have multimedia devices on Vlan 10 and the server on Vlan 20
Vlan 10 is on switch A and Vlan 20 on Switch B, Switch A and B are connected to a layer 3 switch that does internal routing
As far as I understand, ip igmp has to be enabled on both Vlan 10 and 20 on all the switches (A,B and L3), then multicast routing needs to be enabled on the L3 switch (ip multicast-routing)
So is this basic config going to work or do I need to have PIM configured as well ?
Thanks
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09-25-2017 08:29 AM
09-25-2017 08:29 AM
Re: Multicasting
all L2 multicast configuration complated...
after
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10-11-2017 02:14 AM
10-11-2017 02:14 AM
Re: Multicasting
We have a similar problem in our network. Multicast in one VLAN is working fine, multicast routing doesn’t.
We have two 5406zl as core routers with vrrp enabled and about 150 2500 Series Switches all over the building. Routes are static or direct attached, no RIP or OSPF is used.
One VLAN contains a TV-Server which uses Multicast to send video so several streaming clients in our network in the same VLAN.
I enabled multicast routing on both cores und enabled PIM on all vlans that need to receive the multicast stream.
ip multicast-routing
router pim
exit
vlan 14
ip pim-dense
exit
vlan 15
ip pim-dense
exit
On all 2500 Switches I enabled igmp in these the VLANs:
vlan 14 ip igmp
vlan 15 ip igmp
The mediaserver is in VLAN 14, my testclient is in VLAN 15 and can not receive the multicast stream.
Did I miss anything?
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10-11-2017 04:04 AM - edited 10-11-2017 04:05 AM
10-11-2017 04:04 AM - edited 10-11-2017 04:05 AM
Re: Multicasting
Hi,
you need to tell your router the pim ip addresse in the "ip pim-dense" context.
I believe you could do something like this, to let the router decide the correct IP:
vlan 111 ip addr 10.0.0.1 255.255.255.0 ip pim-dense ip addresse any exit exit
Though I'm not sure how "any" works together with VRRP.
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10-11-2017 11:53 PM - edited 10-12-2017 12:15 AM
10-11-2017 11:53 PM - edited 10-12-2017 12:15 AM
Re: Multicasting
The "ip address any" configuration is the default so the switch did it by itself. Current vlan configuration is:
vlan 14
tagged A1-A24,B1-B8,C1-C15,C17-C20,C22,D1-D24,F12,F17,F19,Trk1,Trk3
ip address 10.105.13.251 255.255.255.0
ip helper-address 10.105.3.113
ip helper-address 10.105.3.114
ip igmp
ip pim-dense
ip-addr any
exit
qos priority 2
vrrp vrid 14
virtual-ip-address 10.105.13.254
enable
exit
exit
The vrrp configuration could be a problem. I will test the physical and the virtual address as pim-dense ip.
Edit: configuring a vrrp virtual-ip-address in pim-dense does not work so using the physikal address should be fine.
But it's still not working.
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