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Cisco Bug: CSCvu64464 - Prefer root nodes from backbone areas

Last Modified

Jun 18, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

6.0.0.ROUT 7.3.1.BASE

Description (partial)

Symptom:
When the root node used for BGP optimal route reflection feature is an ABR, it's not deterministic in which area the metric calculation is going to happen on the RR.

The orrspf process picks the first node with the root router ID that arrives at the RR.

Conditions:
Problem happens when ORR root node is an ABR which advertises its TE router ID in multiple areas
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