Pim-Dm Configuration Task List; Configuration Prerequisites; Enabling Pim-Dm; Enabling The State Refresh Feature - HP MSR2003 Configuration Manual

PIM-DM configuration task list

Task at a glance
(Required.)
(Optional.)
(Optional.)
(Optional.)
(Optional.)

Configuration prerequisites

Before you configure PIM-DM, configure a unicast routing protocol so that all devices in the domain are
interoperable at the network layer

Enabling PIM-DM

Enable IP multicast routing before you configure PIM.
With PIM-DM enabled on interfaces, routers can establish PIM neighbor relationship and process PIM
messages from their PIM neighbors. When you deploy a PIM-DM domain, HP recommends that you
enable PIM-DM on all non-border interfaces of the routers.
IMPORTANT:
All the interfaces on a device must operate in the same PIM mode in the public network or the same VPN
instance.
To enable PIM-DM:
Step
1. Enter system view.
2. Enable IP multicast routing and
enter MRIB view.
3. Return to system view.
4. Enter interface view.
5. Enable PIM-DM.

Enabling the state refresh feature

Pruned interfaces resume multicast forwarding when the pruned state times out. To prevent this, the router
with the multicast source attached periodically sends an (S, G) state refresh message. The state refresh
message is forwarded along the initial multicast flooding path of the 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 PIM routers on the subnet.
To enable the state refresh feature on all routers in PIM-DM domain:
Enabling PIM-DM
Enabling the state refresh feature
Configuring state refresh parameters
Configuring PIM-DM graft retry timer
Configuring common PIM features
Command
system-view
multicast routing [ vpn-instance
vpn-instance-name ]
quit
interface interface-type
interface-number
pim dm
94
Remarks
N/A
By default, IP multicast routing is
disabled.
N/A
N/A
By default, PIM-DM is disabled.