Symptom/Cause | Solution |
|---|---|
RSVP session is not operationally UP Interface might be shutdown, no label switching, not RSVP enabled. Incorrect command syntax Routing information not present in CSPF/RIB Wrong strict hops in the rsvp-path | Use these commands: show rsvp session detail In the output part please check the error code and error value. This will help in narrowing down the problem show ip route show ip ospf te-database Gives the OSPF routes to Egress. (used in case of non-CSPF trunks) / OSPF te-database should hold the LSAs of the egress and the hops to the egress. show rsvp interface Check the interface status. show rsvp path Details all the path information show running-config Verify the command configured successfully. |
DSTE/Diffserv, bandwidth related problems Mismatch in class types/TE classes between the nodes Bandwidth constraint for the te class is missing | Use these commands: show rsvp session detail In the output part please check the error code and error value. This will help in narrowing down the problem show rsvp dste-info Details all the DSTE information on that node show running-config Verify if all the required constraints for the class type and te class are configured. |
Symptom/Cause | Solution |
|---|---|
rsvp detour session down | Use this command: show rsvp session detail Check the error code and error value to narrow down the issue. If CSPF is not able to find a path, check SRLG values of the primary path. Then check if any path is available excluding the SRLG values of the primary's out-going interface. |
rsvp secondary session down | Use this command: show rsvp session detail Check the error code and error value to narrow down the issue. If CSPF is not able to find a path, check SRLG values of the primary path. Then check if any path is available excluding the SRLG values of the primary. Change the SRLG option to preferred value if needed. |
If re-optimization is running for detour/secondary | Use this command: show rsvp session detail Check if there is a common SRLG value between the calculated primary session and backup session. If there is a common SRLG value and the SRLG option configured is srlg-disjoint preferred, then re-optimization will be running. |
If calculated session doesn't include SRLG values though configured | Use this command: show ip ospf te-database Verify the TE-LSA of links have SRLG values STLV in them. Use "show running-configuration interface" to verify SRLG values are configured on correct interface. |