R21xx-HP FlexFabric 11900 IP Multicast Configuration Guide

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Multicast forwarding over a GRE tunnel
configuration example
Network requirements
IPv6 multicast routing and IPv6 PIM-DM are enabled on Switch A and Switch C. Switch B does not
support IPv6 multicast. OSPFv3 is running on Switch A, Switch B, and Switch C.
Perform the configuration so that the receiver host can receive the IPv6 multicast data from the source.
Figure 41 Network diagram
Configuration procedure
1. Configure the IPv6 address and prefix length for each interface as shown in Figure 41. (Details not
shown.)
2. Enable OSPFv3 on the switches to make sure the network-layer among the switches is
interoperable and the routing information among the switches can be dynamically updated.
(Details not shown.)
3. Configure a GRE tunnel:
# Create service loopback group 1 on Switch A and specify its service type as Tunnel.
<SwitchA> system-view
[SwitchA] service-loopback group 1 type tunnel
# Disable STP and LLDP on interface Ten-GigabitEthernet 1/0/3 of Switch A, and add the
interface to service loopback group 1. Ten-GigabitEthernet 1/0/3 does not belong to VLAN 100
or VLAN 101.
[SwitchA] interface ten-gigabitethernet 1/0/3
[SwitchA-Ten-GigabitEthernet1/0/3] undo stp enable
[SwitchA-Ten-GigabitEthernet1/0/3] undo lldp enable
[SwitchA-Ten-GigabitEthernet1/0/3] port service-loopback group 1
IPv6 multicast router
Switch A
Vlan-int101
2001::1/64
Vlan-int102
3001::1/64
Vlan-int102
3001::2/64
Vlan-int101
2001::2/64
Source Receiver
4001::100/64
Vlan-int200
4001::1/64
1001::100/64
Vlan-int100
1001::1/64
GRE tunnel
Tunnel0
5001::1/64
Tunnel0
5001::2/64
IPv6 unicast router
Switch B
IPv6 multicast router
Switch C
Member port of the
service loopback group
XGE1/0/3 XGE1/0/3