Learn what orphaned SR-TE policies and RSVP-TE tunnels are and when they can appear after HA switchover or backup and restore operations.
An orphaned SR-TE policy or RSVP-TE tunnel is a network path instance that:
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is initiated by the PCE within Crosswork Network Controller after the most recent cluster data synchronization,
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is not included in the current HA data set, and
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cannot be modified through the user interface until properly synchronized.
Additional reference information
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Orphaned policies and tunnels may appear after a cluster HA switchover or a backup/restore operation.
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Crosswork Network Controller displays an alarm when orphaned TE policies or RSVP-TE tunnels are detected ().
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You can view details of orphaned policies/tunnels, but cannot modify them until they are properly synchronized.
How to manage orphaned policies and tunnels
Crosswork Network Controller provides APIs to help clear orphans. To list orphaned SR-TE policies or RSVP-TE tunnels, use the following:
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cisco-crosswork-optimization-engine-sr-policy-operations:sr-datalist-oper (for SR-TE policies)
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cisco-crosswork-optimization-engine-rsvp-te-tunnel-operations:rsvp-te-datalist-oper (for RSVP-TE tunnels)
Set is-orphan=True and use the GET action to retrieve the list. To make orphaned items manageable again, use the SAVE action for the corresponding policy or tunnel type.
Counter-examples
SR-TE policies or RSVP-TE tunnels that were synchronized before the last cluster data sync are not considered orphaned.
References
For more information, see API documentation on Devnet ().