HP VPN Firewall Appliances Network Management Configuration Guide

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IPv6 multicast forwarding configuration example
This section provides an example of configuring IPv6 multicast forwarding over a GRE tunnel.
Network requirements
IPv6 multicast routing and IPv6 PIM-DM are enabled on Router A and the firewall. Router B does not
support IPv6 multicast. OSPFv3 is running on Router A, Router B, and the firewall. Configure a GRE
tunnel so that the receiver can receive the IPv6 multicast data from the source.
Figure 406 Network diagram
Configuration procedure
1. Enable IPv6 forwarding and configure the IP address and prefix length for each interface as shown
in Figure 406. (Details not shown.)
2. Configure a GRE tunnel:
# Create interface Tunnel 0 on Rou
ter A and assign the IPv6 address and prefix length to interface
Tunnel 0.
<RouterA> system-view
[RouterA] interface tunnel 0
[RouterA-Tunnel0] ipv6 address 5001::1 64
# On Router A, specify the tunnel encapsulation mode as GRE over IPv6 and assign the source and
destination addresses to interface Tunnel 0.
[RouterA-Tunnel0] tunnel-protocol gre ipv6
[RouterA-Tunnel0] source 2001::1
[RouterA-Tunnel0] destination 3001::2
[RouterA-Tunnel0] quit
# Create interface Tunnel 0 on the firewall and assign the IPv6 address and prefix length to
interface Tunnel 0.
<Firewall> system-view
[Firewall] interface tunnel 0
[Firewall-Tunnel0] ipv6 address 5001::2 64
# On the firewall, specify the tunnel encapsulation mode as GRE over IPv6 and assign the source
and destination addresses to interface Tunnel 0.
[Firewall-Tunnel0] tunnel-protocol gre
[Firewall-Tunnel0] source 3001::2
[Firewall-Tunnel0] destination 2001::1