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Cisco Bug: CSCvs16164 - [I+666] ND-ISSU partial traffic drop for average 10-15sec, Proportional VNF enabled

Last Modified

Oct 05, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

9.3(3)IDI9(0.666)

Description (partial)

post Non-Distruptive ISSU, there are partial traffic dropping seen for 10 -15 sec in Proportional VNF feature enabled, because URIB updates route before FIB convergence completed after ND-ISSU.

Symptom:
partial traffic dropping has seen for 10-15 sec right after ND-ISSU.

Conditions:
Proportional VNF feature is enabled and VNF reachability done by static route.
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