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Multicast routing pim sparse mode in Cisco routers – example

15 Maj 2017 Dodaj komentarz
When we want to configure multicast routing pim sparse mode in Cisco router please read this example.
First, we have to run multicast routing.
ip multicast-routing
Protocol ip pim sparse mode works properly only when exists rendezvous point (RP). We have to create rendezvous point in the router. In this case, we create a loopback interface for example:
interface Loopback1
ip address 1.2.3.4   255.255.255.255
ip pim sparse-mode
Next, we have to connect rendezvous point with the loopback address.
ip pim rp-address 1.2.3.4
We to assume that VLAN 500 will be input VLAN and VLAN 600 will be output.
We have to create properly interface VLAN like below:
interface VLAN 500
ip address 10.50.10.252 255.255.255.0
ip pim sparse-mode
interface VLAN 600
ip address 10.60.10.252 255.255.255.0
ip pim sparse-mode
ip igmp static-group 239.0.2.10
The last line informs router that selected multicast group is carried from VLAN 500 to VLAN 600.
Finally, we have to switch on IGMP SNOOPING on selected interface for selected multicast group in output VLAN like below:
ip igmp snooping vlan 600 static 0100.5e00.020a interface Gi1/9 – same routers to
require mac address for the multicast group
or for other routers, the command line is:
ip igmp snooping vlan 600 static 239.0.2.10 interface Gi1/9
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