Debugging Pim-Sm - 3Com 3032 Configuration Manual

Configuring the
Threshold of the
Shortest Path
Displaying and

Debugging PIM-SM

By default, the time interval of interface sending Hello message is 30 seconds.
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
Operation
Configure the threshold value of the
shortest path switching from the shared
tree to source
Restore the default threshold value 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 command in system view to enter PIM view.
pim
Table 594 Display and Debug PIM-SM
Operation
Display multicast forwarding list
information
Display multicast core routing table
Display BSR information
Display PIM protocol interface information display pim interface [ type number ]
Display PIM protocol multicast routing
table information
Display PIM adjacent routers information
Display corresponding RP information of
the multicast group
Turn on the switch of multicast
forwarding table debugging information
Turn on the switch of PIM debugging
information
Turn on the switch of PIM-SM debugging
information
Displaying and Debugging PIM-SM
Command
spt-switch-threshold { traffic-rate |
infinity } [ accept-policy acl-number
]
undo spt-switch-threshold [
accept-policy acl-number ]
Command
display multicast forwarding-table [
group-address ] [ source-address ]
display multicast routing-table [
group-address ] [ source-address ]
display pim bsr-info
display pim routing-table [ *g [
group-address ] | **rp [ rp-address ]
| { group-address | source-address }
]
display pim neighbor [ interface type
number ]
display pim rp-info [ group-address ]
debugging multicast forwarding
debugging pim common { all | event |
packet | timer }
debugging pim sm { all | mbr | mrt |
timer | warning | { recv | send } {
assert | bootstarp | crpadv | jp |
reg | regstop } }
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