32.1.17 IPv6 Multicast Extranet Settings [SL-L3A]

Points to note

In an IPv6 multicast extranet, a unicast extranet to the sender must be configured for the forwarding destination VRF and a unicast route must exist.

Configure multicast route filtering for a VRF in which the sender exists. If no conditions are specified for the route filtering, all multicast addresses can be forwarded to all VRFs on which multicasts run. Specify all the multicast route filtering settings in global configuration mode. The following figure shows a PIM-SSM configuration example in which VPN 2 is associated with VRF 10, and 2001:db8:100::1/64 and 2001:db8:10::1/64 are used as the interface IP addresses for VRF 10. In this case, a unicast route to the server (2001:db8:20::2) in VPN 2 (VRF 10) must exist in VPN 1 (global network).

Figure 32-5: Sample PIM-SSM Configuration in VRF (IPv6 Multicast Extranet)

Command examples

(config)# route-map MLT6EXNET permit 10

(config-route-map)# exit

Creates a route-map that permits all multicast forwarding requests.
(config)# vrf definition 10

(config-vrf)# ipv6 import multicast inter-vrf MLT6EXNET

(config-vrf)# exit

Applies the setting that permits IPv6 multicast forwarding requests from all VRFs to VRF 10.