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HP Comware 5 Debug Manual Vol 1

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Examples
The output in the following examples was created under the following conditions:
•
Two routers are connected directly.
•
MPLS and MPLS LDP are configured on both routers. An LDP session has been successfully
established between the routers.
# Enable debugging for MPLS LDP advertisement on one router (PE 1, in this example). Restart LDP on the
other router. Output similar to the following example is generated:
<PE1> debugging mpls ldp advertisement
<PE1>
*0.16830023 PE1 LDP/8/Advertisement:
DU Re-advertise for FEC: 140.2.2.2/0xffffffff.
*0.16830023 PE1 LDP/8/Advertisement:
0 - FEC: 140.2.2.2/0xffffffff, Successful Next Hop Query
// LDP was advertising FEC information regularly based on the DU Re-advertise timer.
#Dec 22 14:55:50:388 2005 PE1 LDP/5/SessionDown: Session(140.2.2.2:0. public Instance)'s
state change to Down
// The session went down.
*0.16838403 PE1 LDP/8/Advertisement: Serial0/2/0
FEC: 140.2.2.2/0xffffffff, DU DS state machine process, DS Peer 140.2.2.2:0, DSCB's state:
Established , Event: DownStream Lost
// The peer restarted LDP, a nd the upstream state machine processed upstream events.
*0.16838403 PE1 LDP/8/Advertisement:
FEC: 140.2.2.2/0xffffffff, DU Ingress US state machine process, USCB's state: Established
Event: Internal DownStream Withdraw
// The downstream state machine processed downstream events.
*0.16838403 PE1 LDP/8/Advertisement:
LDP send LSP Message (Event: 3) to LSPM for LSP:
0 140.2.2.2/32 -----/3 140.12.1.2 ------- Ser0/2/0
The token is: 0. The MTU is: 1500.
// LDP sent an LSP message to the LSP management (LSPM) module.
*0.16838403 PE1 LDP/8/Advertisement:
Delete USCB, FEC: 140.2.2.2/0xffffffff.
*0.16838403 PE1 LDP/8/Advertisement:
Delete DSCB, FEC: 140.2.2.2/0xffffffff.
*0.16838419 PE1 LDP/8/Advertisement:
Delete FEC Radix Tree Node, Destination: 140.2.2.2,Mask: 0xffffffff
*0.16838419 PE1 LDP/8/Advertisement:
Downstream Lost, Cleanup Successful
// LDP deleted the downstream control block, upstream control block, and FEC node. The downstream
was lost and the cleanup was successful.
*0.16838538 PE1 LDP/8/Advertisement:
Start to process LSP Message(Type: 13) from LSPM - FEC: 140.2.2.2/0xffffffff, Nexthop:
140.12.1.2
//LDP was processing LSPM messages to re-establish the session.
*0.16838538 PE1 LDP/8/Advertisement:
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