3-16
undo spt-switch-threshold [ group-policy acl-number ]
View
PIM view
Parameters
infinity: Specifies to disable RPT-to-SPT switchover.
group-policy acl-number: Applies the configuration to multicast groups that match the specified group
policy, where acl-number indicates a basic ACL number, ranging from 2000 to 2999. If no group policy is
specified, the configuration applies to all multicast groups.
order order-value: Specifies the order number of the ACL in the group-policy list, where order-value has
an effective range of 1 to (the largest order value in the existing group-policy list + 1), but the value
range should not include the original order value of the ACL in the group-policy list. If you have assigned
an order-value to a certain ACL, do not specify the same order-value for another ACL; otherwise the
system gives error information. If you do not specify an order-value, the order value of the ACL will
remain the same in the group-policy list.
Description
Use the spt-switch-threshold command to configure the conditions for disabling RPT-to-SPT
switchover.
Use the undo spt-switch-threshold command to restore the default setting.
By default, a RPT-to-SPT switchover occurs once the device receives the first multicast packet.
Note that:
z To adjust the order of an ACL that already exists in the group-policy list, you can use the
acl-number argument to specify this ACL and set its order-value. This will insert the ACL to the
position of order-value in the group-policy list. The order of the other existing ACLs in the
group-policy list will remain unchanged.
z To use an ACL in the group-policy list, you can use the acl-number argument to specify this ACL
and set its order-value. This will insert the ACL to the position of order-value in the group-policy list.
If you do not include the order order-value option in your command, the ACL will be appended to
the end of the group-policy list.
z If you use this command multiple times on the same multicast group, the first matched traffic rate
configuration in sequence will take effect.
z Once a multicast forwarding entry is created, subsequent multicast data will not be encapsulated in
register messages before being forwarded even if a register outgoing interface exists. Therefore, to
avoid forwarding failure, do not include the infinity keyword in the spt-switch-threshold
command on a switch that may become an RP (namely, a static RP or a C-RP).
Examples
# Disable RPT-to-SPT switchover on a switch that will never become an RP.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] pim
[Sysname-pim] spt-switch-threshold infinity
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