BSR 2000 Configuration and Management Guide
Release 1.0
9-6
MGBI
526360-001-00 Rev. B
Delaying Shortest Path Tree Usage for Better Throughput
You can control the data threshold rate to delay when the PIM rendezvous point (RP)
switches to the Shortest Path Tree (SPT) in order to enhance throughput on your
multicast network. The SPT threshold determines when the RP (shared tree) can join
the SPT (source tree) for a specified multicast group. If the RP sends at a rate greater
than or equal to the specified
kbps
rate, the last-hop router or RP router triggers a PIM
Join message to the PIM source router to construct an SPT.
■
If you want to specify the multicast traffic threshold that must be reached on the
RP router before the multicast traffic is switched over to the SPT, use the
ip pim
spt-threshold rp
command in Global Configuration mode:
MOT(config)#
ip pim spt-threshold rp
<
0-4294967294
> [
infinity
]
where:
0-4294967294
is the multicast traffic rate in kilobytes per second (kbps).
infinity
indicates that the RP is always used.
■
If you want to specify the multicast traffic threshold that must be reached on the
last-hop router before multicast traffic is switched over to the SP, use the
ip pim
spt-threshold lasthop
command in Global Configuration mode:
MOT(config)#
ip pim spt-threshold lasthop
<
0-4294967294
> [
infinity
]
where:
0-4294967294
is the multicast traffic rate in kilobytes per second (kbps).
infinity
indicates that the RP is always used.
Note:
The default setting for the
ip pim spt-threshold rp
command is 0
kbps, which allows the RP to join the SPT immediately.
Note:
The default setting for the
ip pim spt-threshold lasthop
command is
1024 kbps, which allows the RP to join the SPT when the 1024 Kbps
threshold is reached.
Содержание BSR 2000
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