Command Reference Guide

3Com Router 5000 Family and Router 6000 Family msdp-tracert ● 75
Command Reference
msdp-tracert
Purpose Use the msdp-tracert command to trace the transmission path of SA messages in
the network.
Syntax msdp-tracert source-address group-address rp-address [ max-hops
max-hops ] [ next-hop-info ] [ sa-info ] [ peer-info ] [ skip-hops
skip-hops ]
Parameters source-address
Multicast address address.
group-address
Multicast group address.
rp-address
IP address of RP.
max-hops
The maximum number of hops that are traced. Valid
values are 1 to 255.
If not specified, the default value is 16.
next-hop-info
Flag bit for collecting the next hop information.
sa-info
Flag bit for collecting SA entity information.
peer-info
Flag bit for collecting MSDP peer information.
skip-hops
Number of hops that are skipped before collecting
detailed information. Valid values are 0 to 255.
If not specified, the default value is 0.
Example Trace (10.10.1.1, 225.2.2.2, 20.20.20.20) path information.
<3Com> msdp-tracert 10.10.1.1 225.2.2.2 20.20.20.20
Specify the maximum number of hops that are traced and collect detailed information
of SA and MSDP peer.
<3Com> msdp-tracert 10.10.1.1 225.2.2.2 20.20.20.20 max-hops 10 sa-info
peer-info
MSDP tracert: press CTRL_C to break
D-bit: set if have this (S,G) in cache but with a different RP
RP-bit: set if this router is an RP
NC-bit: set if this router is not caching SA’s
C-bit: set if this (S,G,RP) tuple is in the cache
MSDP Traceroute path information:
Router Address: 20.20.1.1
Fixed-length response info:
Peer Uptime: 10 minutes, Cache Entry Uptime: 30 minutes
D-bit: 0, RP-bit: 1, NC-bit: 0, C-bit: 1
Return Code: Reached-max-hops
Next Hop info:
Next-Hop Router Address: 0.0.0.0
SA info:
Count of SA messages received for this (S,G,RP): 0
Count of encapsulated data packets received for this (S,G,RP):0
SA cache entry uptime: 00:30:00 , SA cache entry expiry time:
00:03:32