(Optional) Adjusting Control Parameters for Source Registration

Context

After receiving multicast data from a multicast source, the source DR encapsulates multicast data in a Register message and forwards the message to the RP. Therefore, you can adjust control parameters for source registration on the RP and source DR.

Perform the following operations on the source DR.

Configure the register message suppression time
.
After receiving a Register-Stop message, the source DR stops sending Register messages to the RP during register suppression. The source DR forwards packets again when the register suppression time expires and it receives no more Register-Stop messages.
Configure the interval at which null Register messages are sent.

When the timeout period for keeping the register suppression state is too long or too short, multicast data cannot be forwarded normally. Sending null Register messages during register suppression can relieve this problem.
Configure the source address for Register messages.

The RP cannot receive Register messages from a source DR if the source address of the Register messages is not a unique IPv6 address on the network or if the source address is filtered out by a policy configured on the RP. To enable the RP to receive Register messages from the source DR, configure a new source address for the Register messages.

Perform the following operations on the RP.

Configure a policy to filter Register messages. You can specify the source address range of Register messages to improve network security.

Default Settings

Table 1 lists default settings of control parameters for source registration.

**Table 1** Default settings of control parameters for source registration
Parameter	Default Setting
Filter policy for Register messages	No filter policy configured (receiving Register messages with any group address)
Register message suppression time	60s
Interval for sending null Register messages	5s

Procedure

Configure control parameters for source registration on the source DR.
1. Run system-view
  The system view is displayed.
2. Run pim-ipv6
  The PIM-IPv6 view is displayed.
3. Run register-suppression-timeout interval
  Register message suppression time is configured.
4. Run probe-interval interval
  The interval for sending null Register messages is configured.
  
  The value of probe-interval must be smaller than half of register-suppression-timeout.
5. Run register-source ipv6-address
  The source address of Register messages sent from the source DR is configured.
  
  It is recommended that you use the IPv6 address of a loopback interface on the source DR as the source address of Register messages.
Configure control parameters for source registration on the RP.
1. Run system-view
  The system view is displayed.
2. Run pim-ipv6
  The PIM-IPv6 view is displayed.
3. Run register-policy advanced-acl6-number
  A policy for filtering Register messages is configured.