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Displaying and Debugging PIM-SM 519
By default, the time interval of interface sending Hello message is 30 seconds.
Configuring the
Threshold of the
Shortest Path
The PIM-SM router first forwards multicast data packets by the shared tree. But if
the multicast data rate exceeds a certain threshold value, the router for the last
hop of multicast packets starts the switch from the shared tree to the shortest
path tree.
Make the following configuration in the system view.
Table 593 Configure the Threshold of the Shortest Path Switching From the Shared Tree
to Source
By default, the threshold value of the shortest path switches from the shared tree
to source is zero. That is to say, after the router receives the first multicast data
packet in the last hop, it switches immediately to the shortest path tree.
Use the pim command in system view to enter PIM view.
Displaying and
Debugging PIM-SM
Table 594 Display and Debug PIM-SM
Operation Command
Configure the threshold value of the
shortest path switching from the shared
tree to source
spt-switch-threshold { traffic-rate |
infinity } [ accept-policy acl-number
]
Restore the default threshold value of the
shortest path switching from the shared
tree to source
undo spt-switch-threshold [
accept-policy acl-number ]
Operation Command
Display multicast forwarding list
information
display multicast forwarding-table [
group-address ] [ source-address ]
Display multicast core routing table display multicast routing-table [
group-address ] [ source-address ]
Display BSR information display pim bsr-info
Display PIM protocol interface information display pim interface [ type number ]
Display PIM protocol multicast routing
table information
display pim routing-table [ *g [
group-address ] | **rp [ rp-address ]
| { group-address | source-address }
]
Display PIM adjacent routers information display pim neighbor [ interface type
number ]
Display corresponding RP information of
the multicast group
display pim rp-info [ group-address ]
Turn on the switch of multicast
forwarding table debugging information
debugging multicast forwarding
Turn on the switch of PIM debugging
information
debugging pim common { all | event |
packet | timer }
Turn on the switch of PIM-SM debugging
information
debugging pim sm { all | mbr | mrt |
timer | warning | { recv | send } {
assert | bootstarp | crpadv | jp |
reg | regstop } }