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Cisco Bug: CSCus98916 - BGP Vinci: For 0.0.0.0/0, BGP installs non-best/multi paths in URIB

Last Modified

Aug 05, 2016

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

7.0(1)N1(1)

Description (partial)

Symptom:
In a vinci setup, customer is not able to chose one out of two Border Leaf because URIB is doing ECMP for both paths learnt via BGP.

Conditions:
1. Two paths in BGP vrf table for 0.0.0.0/0 from two Border Leaf.
2. First path is marked as best-path.
3. Second path is not marked as multi-path or best-path
4. BGP installs both paths in URIB vrf table.
5. URIB sees both paths having exact same metrics and interprets ECMP.
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