Command Manual – Multicast Protocol
Quidway S8500 Series Routing Switches Chapter 6 MSDP Configuration Commands
Huawei Technologies Proprietary
6-8
error. After the transmission path of SA messages is determined, correct configuration
can avoid the overflow of SA messages.
Example
# Trace (10.10.1.1, 225.2.2.2, 20.20.20.20) path information.
<Quidway> 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.
<Quidway> 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
Peering info:
Peering Uptime: 10 minutes, Count of Peering Resets: 3
Table 6-1 Description of msdp-tracert command domain
Item Description
Router Address
Address where the local router creates Peering session with
Peer-RPF neighbor.
Peer Uptime
Time for which the local router performs Peering session with
Peer-RPF neighbor in minute, with the maximum value of
255.
Cache Entry
Uptime
Present time of (S, G, RP) entry in SA cache of the local
router, in minute, with the maximum value of 255.
D-bit: 1
(S, G, RP) entry existing in SA cache of the local router.
But the RP is different from the RP specified in the request
message.
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