Zte ZXR10 ZSR V2 Configuration Manual page 189

iii. It is recommended to configure a candidate RP on the loopback interface to reduce
network oscillation due to the physical interface being up/down.
5. Configure IPv6 PIM-SM global parameters.
In IPv6 PIM-SM, different parameters have different default values. Configuring these
parameters can optimize the network.
Step
1
2
3
4
By default, the threshold to hand the RPT over to the SPT is 0.
Only the last hop DR and RP can hand over to the SPT on their own initiative. By
default, the handover begins when the RP receives the first Register message. For the
last hop DR, the policy of SPT handover can be configured by using a single multicast
group as the control granularity. If the handover threshold of a group is set to infinity,
handover will not be performed. By default, as long as there is traffic, a handover is
performed.
A DR must be elected in a shared (or multi-access) segment. The candidate DR with
the highest priority becomes the DR. If several candidate DRs have the same highest
priority, the one with the largest IP address becomes the DR.
In a shared segment connecting to the multicast source, only the DR can send Register
messages to RP. In a shared segment connecting to receivers, only the DR reply to the
MLD Join messages and Leaving messages, and send PIM Join/Pruning messages to
upstream devices. The router priority is contained in the Hello messages exchanged
with neighbors, with the default value of 1.
The following example shows how to configure the DR priority on gei-1/1.
ZXR10(config)#ipv6 multicast-routing
ZXR10(config-mcast-ipv6)#router pim
ZXR10(config-mcast-ipv6-pim)#interface gei-1/1
ZXR10(config-mcast-ipv6-pim-if-gei-1/1)#dr-priority 20
ZXR10(config-mcast-ipv6-pim-if-gei-1/1)#exit
SJ-20140504150128-018|2014-05-10 (R1.0)
Command
ZXR10(config-mcast-ipv6-pim)#
infinity
ZXR10(config-mcast-ipv6-pim-if-interface-
dr-priority <priority>
name)#
ZXR10(config-mcast-ipv6-pim-if-interface-
bsr-border
name)#
ZXR10(config-mcast-ipv6-pim-if-interface-
hello-interval <seconds>
name)#
Chapter 14 IPv6 PIM-SM Configuration
spt-threshold
14-5
ZTE Proprietary and Confidential
Function
Configures handover of the SPT.
infinity: causes the router never
to move to the SPT tree. It
remains on the shared RP tree.
Configures the DR priority on a
PIM interface.
Range: 0-4294967295, default:
1.
Sets an interface to the border of
the PIM domain.
Configures the interval to send
Hello messages.