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.
|