Multicast for IPv6 can be configured using static RPs, BSR or embedded RP. In this example I want to show you how to configure IPv6 multicast using BSR. This is the topology that I will use:
Above we have 3 routers. R1 will be the receiver of the multicast stream, R2 will be the BSR and R3 will be the RP. First we’ll have to do our homework and configure all IPv6 addresses on the interfaces:
R1(config)#ipv6 unicast-routing
R1(config)#interface fastEthernet 0/0
R1(config-if)#ipv6 address 2001:12::1/64
R2(config)#ipv6 unicast-routing
R2(config)#interface fastEthernet 0/0
R2(config-if)#ipv6 enable
R2(config-if)#exit
R2(config)#interface fastEthernet 1/1
R2(config-if)#ipv6 enable
R2(config-if)#exit R2(config)#interface loopback 0 R2(config-if)#ipv6 address 2001::2/128
R3(config)#ipv6 unicast-routing
R3(config)#interface fastEthernet 0/0
R3(config-if)#ipv6 enable
R3(config-if)#exit
R3(config)#interface loopback 0
R3(config-if)#ipv6 address 2001::3/128
With the IPv6 addresses up and running we can configure EIGRP to advertise the loopback interfaces of R2/R3 and the 2001:12::/64 network between R1/R2:
R1(config)#ipv6 router eigrp 1
R1(config-rtr)#router-id 1.1.1.1
R1(config-rtr)#no shutdown
R1(config)#interface fastEthernet 0/0
R1(config-if)#ipv6 eigrp 1
R2(config)#ipv6 router eigrp 1
R2(config-rtr)#router-id 2.2.2.2
R2(config-rtr)#no shutdown
R2(config)#interface loopback 0
R2(config-if)#ipv6 eigrp 1
R2(config-if)#exit
R2(config)#interface fastEthernet 0/0
R2(config-if)#ipv6 eigrp 1
R2(config-if)#exit
R2(config)#interface fastEthernet 1/1
R2(config-if)#ipv6 eigrp 1
R3(config)#ipv6 unicast-routing
R3(config)#ipv6 router eigrp 1
R3(config-rtr)#router-id 3.3.3.3
R3(config-rtr)#no shutdown
R3(config)#interface loopback 0
R3(config-if)#ipv6 eigrp 1
R3(config-if)#exit
R3(config)#interface fastEthernet 0/0
R3(config-if)#ipv6 eigrp 1
Because I don’t have any IPv4 addresses I have to configure an EIGRP router ID myself. With the configuration above the 2001:12::/64, 2001::2/128 and 2001::3/128 networks should be reachable from any router. Now we can continue with our multicast setup:
R1,R2 & R3:
(config)#ipv6 multicast-routing
First enable multicast routing for IPv6 or we are going nowhere. Next step is to configure the RP and BSR:
best CCIE R/S explanation …thanks
Hi,
we did not use a command like
ipv6 pim sparse-mode
but the pim neighborship is established. How can ipv6 establish this?regards.
Hi Rene and staff,
i am trying to test multicast scope in a basic lab
https://cdn-forum.networklessons.com/uploads/default/original/2X/3/3482eb679d00649f1ee0b8b6bba4ef741fb0f540.jpeg
My goal is to build a site-local scope with all the routers and to test connectivity using multicast address FF05::2So i want to ping FF05::2 from R4 and hope to receive replies from R1,R2,R3
From the perspective of R4, at the beginning, join groups are
FF02::1 because R4 is a IPV6 node
FF02::2 because i set ipv6 unicast-routing
FF02::1:FF00:4 because of SNMA corresponding to link... Continue reading in our forum
thanks Laz, understood,
but in my lab, how can i link ULA with multicast group ff05::2 ?
Regards
Hi Laz,
thank for your replies,
i stay playing with my lab and test configs to see ff05::2 in action
https://cdn-forum.networklessons.com/uploads/default/original/2X/b/b65524cabcdc8a53e0d28faca0d7b00d1bc71b9d.jpeg
I do this config on R4 / Gi0/3https://cdn-forum.networklessons.com/uploads/default/original/2X/3/3845d4cb8203537944c91cf3686bca488f8a6757.jpeg
So now Gi0/3 is joining multicast group FF05::2
https://cdn-forum.networklessons.com/uploads/default/original/2X/2/250c36370f3036979b871d6ad368926e61b9775b.jpeg
I give a ULA address on R3 / G0/2
https://cdn-fo
... Continue reading in our forum