HP MSR2000/3000/4000 Router Series IP Multicast Command Reference

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Syntax
spt-switch-threshold { traffic-rate | immediacy | infinity } [ group-policy acl-number ]
undo spt-switch-threshold [ traffic-rate | immediacy | infinity ] [ group-policy acl-number ]
Default
The device immediately triggers a switchover to SPT after receiving the first multicast packet.
Views
PIM view
Predefined user roles
network-admin
Parameters
traffic-rate: Specifies a traffic rate threshold for triggering a switchover to SPT, in the range of 1 to
4194304 kbps.
immediacy: Triggers a switchover to SPT immediately.
infinity: Disables switchover to SPT.
group-policy acl-number: Specifies an IPv4 basic ACL by its number in the range of 2000 to 2999. If an
IPv4 basic ACL is specified, the configuration applies to the multicast groups that the ACL permits. If you
do not specify an ACL or the specified ACL does not exist, or if the specified ACL does not have any valid
rules, the configuration applies to all multicast groups.
Usage guidelines
CAUTION:
If the router is an RP, disabling switchover to SPT might cause multicast traffic forwardin
g
failures on the
source-side DR. When disabling switchover to SPT, be sure you fully understand its impact on your
network.
The source field in an ACL specifies the multicast group range. If you specify a VPN instance in the ACL,
the ACL does not take effect. The other optional parameters except the time-range keyword and the
fragment keyword are ignored.
You can configure multiple traffic rate thresholds by executing this command multiple times. However, if
you specify the same ACL in the command, the most recent configuration takes effect. If the configured
traffic rate thresholds are applied to the same multicast group, the first configuration takes effect.
Examples
# Set the traffic rate threshold for triggering a switchover to SPT to 4 kbps on the public network.
<Sysname> system-view
[Sysname] pim
[Sysname-pim] spt-switch-threshold 4
# Disable switchover to SPT on a receiver-side DR on the public network.
<Sysname> system-view
[Sysname] pim
[Sysname-pim] spt-switch-threshold infinity