3Com Switch 8800 Configuration Guide Chapter 30 MSDP Configuration
30-12
30.3 Displaying and Debugging MSDP I. Displaying and Debugging MSDP
After the above configuration, execute display commands in any view to display the
running information of MSDP and to verify the effect of the configuration.
Execute the debugging command in user view for the debugging of MSDP.
Table 30-17 Displaying and debugging MSDP configuration
Operation Command
Display the numbers of sources and
groups of SA messages from a
specified autonomous domain display msdp sa-count [ as-number ]
Display the details of a MSDP peer display msdp peer-status
[ peer-address ]
Display the (S,G) state learnt from
MSDP peer
display msdp sa-cache [ group-address |
[ source-address ] ]
[ autonomous-system-number ]
Display MSDP peer state display msdp brief
Enable MSDP debugging debugging msdp { all | connect | event |
packet | source-active }
Note that only after the cache-sa-enable command is executed, will the display msdp
sa-count command have output.
II. Tracing the Transmission Path of SA Messages on the Network
The mtracert command can be used in any view to trace the network path of multicast
data from multicast source to destination receiver and locate faults.
Table 30-18 Tracing the transmission path of SA messages on the network
Operation Command
Trace the transmission
path of SA messages on
the network
msdp-tracert { source-address } { group-address }
{ rp-address } [ max-hops max-hops ] [ next-hop-info ]
[ sa-info ] [ peer-info ] [ skip-hops skip-hops ]
Locating information loss and reducing configuration faults can be realized by tracing
the network path of the specified (S, G, RP) entries. After the transmission path of SA
messages is determined, the overflow of SA messages can be avoided by the correct
configuration.