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Cisco Bug: CSCvu20310 - [MC-OLR]Avoid churn for v4-routing - Placement reopt

Last Modified

Jul 17, 2020

Products (4)

  • Cisco Carrier Routing System
  • Cisco NCS 4016
  • Cisco IOS XR Software
  • Cisco NCS 4009

Known Affected Releases

6.5.31.BASE

Description (partial)

Symptom:
After placement re-optimize  , BGL and MPLS neigbhours sessions got flapped and traffic gltich arounf 20-25 sec is observed .

Conditions:
While upgrading the MC setup from 6526 to 6531, post calvados upgrade and commit, placement reoptimize is done to make sure the current placement and the reoptimized placement are same. This is to prevent XR ISSU abort in later stage.
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