Configure IPv6 PIM-SM Neighbor Parameters

Configuration Condition

Before configuring the IPv6 PIM-SM neighbor parameters, 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, making the intra-domain route reachable
• Enable the IPv6 PIM-SM protocol

Configure Sending Period of Hello Packets

The interface enabled with the IPv6 PIM-SM protocol periodically sends the Hello packets to set up and maintain the PIM neighbor.

Table 11-12 Configure the period of sending the Hello packet

Configure 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 11-13 Configure IPv6 PIM-SM neighbor keepalive time

Configure Neighbor Filter

If there are many PIM neighbors in one subnet, you can use the neighbor filter function to set up the neighbor selectively, so as to save the resources of the device.

Table 11-14 Configure the neighbor filter

Configure DR Priority

DR plays one important role in the IPv6 PIM-SM network, so selecting the appropriate DR is important. You can select the appropriate device as DR by configuring the DR priority.

One IPv6 PIM-SM subnet only permits one DR. According to the function, DR can be divided to source DR and receiving DR.

The main function of the source DR is to perform the source register to RP.

The main function of the receiving DR is to add to RP and set up the switching of RPT and SPT.

Table 11-15 Configure the DR priority

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  DR election rules:
  • Compare the priorities. The larger the value, the higher the priority. The one with highest priority wins.
  • If the priority is the same, the one with the largest IPv6 address wins.

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