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Configure PIM-DM Neighbor

Configuration Condition

Before configuring the PIM-DM neighbor, first complete the following tasks:

  • Configure the network layer address of the interface, making the neighboring node network layer reachable
  • Configure any unicast route protocol, realizing intra-domain route reachable
  • Enable the PIM-DM protocol

Configure Sending Period of HELLO Packets

The interface enabled with the PIM-DM protocol periodically sends the Hello packets to set up and maintain the PIM-DM neighbor.

Table 6-3 Configure the period of sending HELLO packets

Step

Command

Description

Enter global configuration mode

configure terminal

-

Enter interface configuration mode

interface interface-name

-

Configure the period of sending the Hello packets

ip pim dense-mode hello-interval interval-value

Optional

By default, the period of sending the Hello packets is 30s.

Configure PIM-DM Neighbor Keepalive Time

When the interface receives the Hello packets of one neighbor, record the holdtime carried in the Hello packet as the keepalive time of the neighbor. If not receiving the Hello packet of the neighbor within the keepalive time, it is regarded that the neighbor becomes invalid.

Table 6-4 Configure PIM-DM neighbor keepalive time

Step

Command

Description

Enter global configuration mode

configure terminal

-

Enter interface configuration mode

interface interface-name

-

Configure the keepalive time of the PIM-DM neighbor

ip pim dense-mode hello-holdtime holdtime-value

Optional
By default, the keepalive time of the PIM-DM neighbor is 105s.

Configure PIM-DM Neighbor Filter

To save the system resources, you can use the neighbor filter function to set up the neighbor selectively, so as to save the resources of the device.

Table 6-5Configure the PIM-DM neighbor filter

Step

Command

Description

Enter global configuration mode

configure terminal

-

Enter interface configuration mode

interface interface-name

-

Configure the PIM-DM neighbor filter

ip pim dense-mode neighbor-filter { access-list-number | access-list-name }

Optional

By default, do not enable the PIM-DM neighbor filter function.