BugZero | Cisco BugID CSCvg01237 - XR : 6.3.2 :: Stale LSA exist in standby after oct...

Cisco - Defect ID: CSCvg01237

XR : 6.3.2 :: Stale LSA exist in standby after octane LC power down

Cisco - Defect ID: CSCvg01237

XR : 6.3.2 :: Stale LSA exist in standby after octane LC power down

Last updated on December 15th, 2023

BugZero Risk Score
6.0 Medium

Overall: 6.0

Severity: 6.4

Lifecycle: 9.1

Popularity: 3.7

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Bug Details

Description

Symptom

OSPFv3 NSR sync is not happening after the RPFO. the issue is observed when we power down Octane LC just before the RPFO.

Conditions

This is a PI issue. this will happen if we do an RPFO just after an LC power down. the issue is because of Stale Link LSA is present on the new active RP. when we try to sync those Stale LSA with the new standby RP, the new standby will not have those interfaces which belongs to these link LSA. due to that NSR sync will not be achieved.

Workaround

the system will recover in max 1 hour (OSPF MAX AGE) once these stale LSA will be flushed from the active. in case we want to recover fast than any operation which will trigger deleting of Link LSA on the active should work. 1) delete the OSPF interface configuration if that interface is no longer present in system. 2) process restart ospfv3 will also recover the issue but this will be too harsh for this issue.

Further Problem Description

This is a PI issue and can happen on any platform. this is a day1 issue. CSCuq90696 tried to fix this but does not cover all the cases.

Change history

2023-12-15 Added: 6.3.15, 6.3.2, 6.3.3, 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.5.1, 6.5.15, 6.5.2, 6.5.25, 6.5.26, 6.5.28, 6.5.29, 6.5.3, 6.5.90, 6.5.92, 6.5.93, 6.6.1, 6.6.11, 6.6.12, 6.6.2, 6.6.25, 6.6.3, 6.7.1, 6.7.2, 7.0.0, 7.0.1, 7.0.11, 7.0.12, 7.0.14, 7.0.2, 7.0.90, 7.1.1, 7.1.15, 7.1.2, 7.1.25, 7.2.0, 7.2.1

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

Affected versions:No known affected versions

Fixed versions: 6.3.15, 6.3.2, 6.3.3, 6.4.0, 6.4.1, 6.4.2, 6.4.3, 6.5.1, 6.5.15, 6.5.2, 6.5.25, 6.5.26, 6.5.28, 6.5.29, 6.5.3, 6.5.90, 6.5.92, 6.5.93, 6.6.1, 6.6.11, 6.6.12, 6.6.2, 6.6.25, 6.6.3, 6.7.1, 6.7.2, 7.0.0, 7.0.1, 7.0.11, 7.0.12, 7.0.14, 7.0.2, 7.0.90, 7.1.1, 7.1.15, 7.1.2, 7.1.25, 7.2.0, 7.2.1

Relevant Products

Click on a version to see all relevant bugs

Affected versions:No known affected versions

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Cisco - Defect ID: CSCvg01237

XR : 6.3.2 :: Stale LSA exist in standby after octane LC power down

Cisco - Defect ID: CSCvg01237

XR : 6.3.2 :: Stale LSA exist in standby after octane LC power down

Last updated on December 15th, 2023

BugZero Risk Score6.0 Medium

Bug Details

Symptom

Conditions

Workaround

Further Problem Description

Links

Top Cisco Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.0 Medium