H3C Technologies H3C S7500E Series Switches - Manual (Page 153)

6-16
Task Remarks
Enabling PIM-DM Required
Enabling State-Refresh Capability Optional
Configuring State-Refresh Parameters Optional
Configuring PIM-DM Graft Retry Period Optional
Configuring PIM Common Features Optional
Configuration Prerequisites
Before configuring PIM-DM, complete the following task:
z Configure any unicast routing protocol so that all devices in the domain are interoperable at
the network layer.
Before configuring PIM-DM, prepare the following data:
z The interval between state-refresh messages
z Minimum time to wait before receiving a new refresh message
z TTL value of state-refresh messages
z Graft retry period
Enabling PIM-DM
With PIM-DM enabled, a router sends hello messages periodically to discover PIM neighbors
and processes messages from the PIM neighbors. When deploying a PIM-DM domain, you are
recommended to enable PIM-DM on all non-border interfaces of the routers.
Enabling PIM-DM globally in the public instance
Follow these steps to enable PIM-DM globally in the public instance:
To do... Use the command... Remarks
Enter system view system-view —
Enable IP multicast routing multicast routing-enable
Required
Disable by default
Enter interface view
interface interface-type
interface-number
—
Enable PIM-DM pim dm
Required
Disabled by default
Enabling PIM-DM in a VPN instance
Follow these steps to enable PIM-DM in a VPN instance: