R3102-R3103-HP 6600/HSR6600 Routers IP Multicast Configuration Guide

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When receivers stop receiving data addressed to a certain IPv6 multicast group through the RP (that is,
the RP stops serving the receivers of that IPv6 multicast group), or when the RP starts receiving IPv6
multicast data from the IPv6 multicast source along the SPT, the RP sends a register-stop message to the
source-side DR. After receiving this message, the DR stops sending register messages encapsulated with
IPv6 multicast data and starts a register-stop timer. Before the register-stop timer expires, the DR sends a
null register message (a register message without multicast data) to the RP. If the DR receives a
register-stop message during the register probe time, it will reset its register-stop timer. Otherwise, the DR
starts sending register messages with encapsulated data again when the register-stop timer expires.
The register-stop timer is set to a random value chosen uniformly from the interval (0.5 times
register_suppression_time, 1.5 times register_suppression_time) minus register_probe_time.
Configure a filtering rule for register messages on all C-RP routers and configure them to calculate the
checksum based on the entire register messages. Configure the register suppression time and the register
probe time on all routers that might become IPv6 source-side DRs.
To configure register-related parameters:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter IPv6 PIM view. pim ipv6 N/A
3. Configure a filtering rule for
register messages.
register-policy acl6-number
Optional.
No register filtering rule by default.
4. Configure the device to
calculate the checksum based
on the entire register
messages.
register-whole-checksum
Optional.
Based on the header of register
messages by default.
5. Configure the register
suppression time.
register-suppression-timeout
interval
Optional.
60 seconds by default.
6. Configure the register probe
time.
probe-interval interval
Optional.
5 seconds by default.
Configuring switchover to SPT
Both the receiver-side DR and the RP can periodically check the traffic rate of passing-by IPv6 multicast
packets (this function is not available with switches) and thus trigger a switchover from RPT to SPT.
Perform the following configuration on routers that might become receiver-side DRs and on C-RP routers.
To configure switchover to SPT:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter IPv6 PIM view. pim ipv6 N/A
3. Configure the criteria for
triggering a switchover to SPT.
spt-switch-threshold infinity
[ group-policy acl6-number [ order
order-value ] ]
Optional.
By default, the device switches to
the SPT immediately after it
receives the first IPv6 multicast
packet from the RPT.