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IPv6 PIM-DM configuration task list
Task at a
lance
(Required.) Enabling IPv6 PIM-SM
(Optional.) Enabling the state refresh feature
(Optional.) Configuring state refresh parameters
(Optional.) Configuring IPv6 PIM-DM graft retry timer
(Optional.) Configuring common IPv6 PIM features
Configuration prerequisites
Before you configure IPv6 PIM-DM, configure an IPv6 unicast routing protocol so that all devices in the
domain are interoperable at the network layer.
Enabling IPv6 PIM-DM
Enable IPv6 multicast routing before configuring IPv6 PIM.
With IPv6 PIM-DM enabled on interfaces, routers can establish IPv6 PIM neighbor relationship and
process IPv6 PIM messages from their IPv6 PIM neighbors. When you deploy an IPv6 PIM-DM domain,
HP recommends that you enable IPv6 PIM-DM on all non-border interfaces of routers.
IMPORTANT:
ll the interfaces on a device must operate in the same IPv6 PIM mode in the public network or the same
PN instance.
To enable IPv6 PIM-DM:
Ste
Command Remarks
1. Enter system view.
system-view
N/A
2. Enable IPv6 multicast routing
and enter IPv6 MRIB view.
ipv6 multicast routing
[ vpn-instance vpn-instance-name ]
By default, IPv6 multicast routing is
disabled.
3. Return to system view.
quit
4. Enter interface view.
interface interface-type
interface-number
N/A
5. Enable IPv6 PIM-DM.
ipv6 pim dm
By default, IPv6 PIM-DM is
disabled.
Enabling the state refresh feature
Pruned interfaces resume multicast forwarding when the pruned state times out. To prevent this, the router
directly connected with the IPv6 multicast source periodically sends an (S, G) state refresh message. The
state refresh message is forwarded hop-by-hop along the initial flooding path of the IPv6 PIM-DM
domain to refresh the prune timer state of all the routers on the path. A shared-media subnet can have the
state refresh feature only if the state refresh feature is enabled on all IPv6 PIM routers on the subnet.
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