Configure IPv6 PIM-SM Multicast Source Register

Configuration Condition

Before configuring the multicast source register, 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 RP Reachability Check

Before source DR sends the register packet to RP, first perform the RP reachability check. If finding that the RP route is not reachable, do not register to RP, so as to reduce the cost of the DR.

Table 11-7 Configure the RP reachability check

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  To reduce the cost of the source DR, it is suggested to configure the command on the source DRs of all IPv6 PIM-SMs.

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Configure Sending Rate of Register Packets

When the source DR receives the multicast packet, encapsulate the multicast packet to the register packet and send to RP for source register until the registration is complete.

When the source DR does not complete the multicast source register and the multicast flow is large, generate lots of register packets, which increase the load of the RP device. Even RP cannot work normally. Source DR does not need to transmit all register packets of one flow to RP, so configuring the rate of sending the register packets at the source DR not only can reach the purpose of source registration, but also can reduce the RP load.

Table 11-8 Configure the rate of sending the register packet

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  To reduce the RP load, it is suggested to configure the rate of sending the source register packets on all source DRs.

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Configure Sending Rate of Register Stop Packets

After RP receives the register packet of the source DR, send the register stop packet to the source DR to complete the registration. When the RP receives lots of register packets, it is necessary to reply all register packets (send register stop packet). In fact, there are lots of repeated packets in the register stop packets. You can limit the rate of sending the register stop packet on RP to reduce the cost of RP.

Table 11-9 Configure the rate of sending the register stop packet