SR TE policy is down in IOS-XR

[darshan kn]

Hi,

I have configured SRTE policy on one NCS6K-1(head-end) to other NCS6K-2's(tail-end) loopback address. I have tried both the static policy and dynamic policy as well. Both are not working fine.

Here are the quick SR-Configs and ISIS configs.

Please help and thanks in advance.

Regards,

Darshan K N

[Harold Ritter · Accepted solution]

Hi @darshan kn ,

Can you try the following:

router isis core

 no distribute link-state level 1

 distribute link-state

Regards,

[darshan kn]

Thanks a lot Harold. That was really a quick reply and it fixed the issue. I can see the policy in UP state now.

Regards,

Darshan K N

[Harold Ritter]

You are very welcome @darshan kn and thanks for the feedback

[darshan kn]

Hi Harold,

For some reason SRTE policy which had come up earlier is flapping again and again. I'm not sure what needs to be done to fix it

RP/0/RP1/CPU0:C8812-1#sh segment-routing traffic-eng policy
Fri Apr 12 14:09:45.139 +03

SR-TE policy database
---------------------

Color: 444, End-point: 192.168.100.11
Name: srte_c_444_ep_192.168.100.11
Status:
Admin: up Operational: up for N/A (since Apr 12 14:09:44.061)
Candidate-paths:
Preference: 200 (configuration) (active)
Name: sample_srte
Requested BSID: dynamic
Constraints:
Protection Type: protected-preferred
Maximum SID Depth: 8
Dynamic (valid)
Metric Type: TE, Path Accumulated Metric: 3
SID[0]: 16122 [Prefix-SID, 192.168.100.11]
Attributes:
Binding SID: 24051
Forward Class: Not Configured
Steering labeled-services disabled: no
Steering BGP disabled: no
IPv6 caps enable: yes
Invalidation drop enabled: no
Max Install Standby Candidate Paths: 0

RP/0/RP1/CPU0:C8812-1#
RP/0/RP1/CPU0:C8812-1#sh segment-routing traffic-eng policy
Fri Apr 12 14:09:52.581 +03

SR-TE policy database
---------------------

Color: 444, End-point: 192.168.100.11
Name: srte_c_444_ep_192.168.100.11
Status:
Admin: up Operational: down for 00:00:03 (since Apr 12 14:09:49.114)
Candidate-paths:
Preference: 200 (configuration) (inactive)
Name: sample_srte
Requested BSID: dynamic
Constraints:
Protection Type: protected-preferred
Maximum SID Depth: 8
Dynamic (inactive)
Last error: unresolved first label (16122)
Metric Type: TE, Path Accumulated Metric: 3
Attributes:
Forward Class: 0
Steering labeled-services disabled: no
Steering BGP disabled: no
IPv6 caps enable: no
Invalidation drop enabled: no
Max Install Standby Candidate Paths: 0

Regards,

Darshan K N

[Harold Ritter]

Hi @darshan kn ,

Can you provide the "sh segment-routing traffic-eng policy detail" output.

Regards,

[darshan kn]

Hi Harold,

I have missed some configuration due to which it was down. Sorry for the trouble and for the very late reply here.

Regards,

Darshan K N

[Harold Ritter]

Hi @darshan kn ,

I am glad you got it to work. Please let us know if there is anything else we can do to help.

Regards,