ZXR10 5900E Series Configuration Guide (IPv6)
Parameter
Description
<
hash-mask-length
>
Hash mask length, in the range of 0-128
<
priority
>
Priority, in the range of 0-255, with the default value of 0
If static RP mechanism is not used, it is necessary to configure a candidate BSR on one
or more multicast switches in each multicast domain and elect a BSR.
A BSR sends bootstrap messages periodically to advertise the RP information. The
switches running PIM-SM update the RP state according to the latest advertisement
messages. The bootstrap messages sent by BSRs are also used to elect a formal BSR
among candidate BSRs.
The default priority of a candidate BSR is 0. The BSR with the highest priority will become
the formal BSR. If several candidate BSR have the same highest priority, the one with the
largest IP address will become the formal BSR.
The command parameters in Step 5 are described as follows:
Parameter
Description
<
ipv6-address
>
BSR address, in the X:X::X:X format
<
priority
>
Candidate RP priority, in the range of 0-255, with the default
value of 192
In PIM-SM, a RP is the root of the RPT. It is responsible for sending multicast packets to
downstream multicast receiving members along the RPT. There should be only one formal
RP in each multicast group.
Usage descriptions of a candidate RP:
1.
The default priority of a candidate RP is 192. The RP with the smallest priority value
will become the RP. If some candidate RPs have the same smallest priority value, the
hash values are compared. The candidate RP with the largest hash value will become
the RP. If the hash values are the same, IP addresses are compared. The candidate
RP with the largest IP addresses will become the RP.
2.
It is recommended to configure a candidate RP on the loopback interface to reduce
the network oscillation due to physical interface up/down.
Configuring IPv6 PIM-SM Global Parameters
In IPv6 PIM-SM, different parameters have different default values. Configuring these
parameters can optimize the network. To configure IPv6 PIM-SM global parameters on
ZXR10 5900E, perform the following steps.
Step
Command
Function
1
ZXR10(config-mcast-ipv6-pim)#
spt-threshold infinity
Configures handover of the
SPT.
13-6
SJ-20150114102049-011|2015-01-15 (R1.0)
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