Symptom/Cause | Solution |
|---|---|
SR Policy is not coming up | Use this command: show segment-routing policy detail Make sure color end-point key is configured and at least one candidate path is configured. |
If SR Policy is not coming up with explicit path | Use the above command and "show mpls ilm-table" and make sure first SID of explicit segment-list is present in the ILM-table. |
If SR Policy is not coming up with dynamic-path | Use this command: show cspf lsp It shows the CSPF computation related information. If the state is compute, wait for next retry. In case next retry is also unsuccessful, Make sure end-to-end reachability is there, segment-routing is enabled in all the transit nodes, Prefix-SID is configured end-point. |
If SR Policy is not coming up with dynamic-path and IP constraint | Use above command and make sure, Prefix-SID is configured for constraint, If the constraint is specified for Node constraint (loopback IP), make sure Node's router-id is same as loopback IP address. To verify if Node-SID is present as an active entry, "show mpls forwarding-table" can be checked. |
If SR Policy is not coming up with dynamic-path and affinity | Make sure above mentioned things are fine and mentioned affinities are correctly configured on all the transit nodes and respective interfaces. |
If SR Policy is not coming up with dynamic PCE | Make sure the PCE entity attached to the policy is configured correctly in the PCE configuration mode. Also ensure that the PCEP session is up with this entity. |