162
# Execute the
display interface tunnel
command on PE 1. The output shows that traffic is being
forwarded along the CR-LSP of the TE tunnel.
[PE1] display interface tunnel 1
Tunnel1 current state: UP
Line protocol current state: UP
Description: Tunnel1 Interface
The Maximum Transmit Unit is 1500
Internet Address is 12.1.1.1/24 Primary
Encapsulation is TUNNEL, service-loopback-group ID not set
Tunnel source unknown, destination 3.3.3.3
Tunnel protocol/transport CR_LSP
Output queue : (Urgent queuing : Size/Length/Discards) 0/100/0
Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0
Output queue : (FIFO queuing : Size/Length/Discards) 0/75/0
Last 300 seconds input: 5 bytes/sec, 0 packets/sec
Last 300 seconds output: 5 bytes/sec, 0 packets/sec
34 packets input, 2856 bytes
0 input error
34 packets output, 2856 bytes
0 output error
Troubleshooting MPLS TE
Symptom
OSPF TE is configured but no TE LSAs can be generated to describe MPLS TE attributes.
Analysis
For TE LSAs to be generated, at least one OSPF neighbor must reach the FULL state.
Solution
1.
Execute the
display current-configuration
command to check that MPLS TE is configured on
involved interfaces.
2.
Execute the
debugging ospf mpls-te
command to observe whether OSPF can receive the TE LINK
establishment message.
3.
Execute the
display ospf peer
command to check that OSPF neighbors are established correctly.
