Hi
I have a network with 5 access switches connected directly to a cisco 4500, also i have enabled intervlan routing globally so communication between different VLANS with different subnet is not an issue
as im new to the subject just want to know how can i proceed with multicast routing between VLANs in my environment.
will enabling IGMP on all the switches be enough or do i have to do some other configurations
thnx
Solved! Go to Solution.
IGMP snooping should be enabled by default so nothing to do on access switches.
On the core switch you need to -
1) enable multicast routing "ip multicast-routing"
2) on each of the L3 vlan interfaces enable PIM eg. "ip pim dense-mode" or "ip pim sparse-mode".
If you configure sparse mode you need an RP as well which would be your core switch in this case.
Jon
IGMP snooping should be enabled by default so nothing to do on access switches.
On the core switch you need to -
1) enable multicast routing "ip multicast-routing"
2) on each of the L3 vlan interfaces enable PIM eg. "ip pim dense-mode" or "ip pim sparse-mode".
If you configure sparse mode you need an RP as well which would be your core switch in this case.
Jon
thanks Jon
just want clarification regarding adding a RP
so in each VLAN interface i enable PIM sparse
ip pim sparse-mode
assume that my interfaces for core switch for VLAN 1 is 192.168.10.10
and vlan 2 is 10.10.10.5
do i have to assign the RP ip address in access level switches as well or only in the core under each VALN interface if i configure the RP ip address will it be enough
eg:- for vlan 2
ip pim rp-address 10.10.10.5
thanks