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Cisco Bug: CSCvs25058 - Customer can not connect more than 31 direct-attach rack servers

Last Modified

Jan 08, 2020

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

4.0(4f)A

Description (partial)

Symptom:
6454 Fabric Interconnects cannot switch traffic between a pair of UCS Rack-servers. This is only for traffic that should be switched in-fabric i.e. between vNICs pinned on the FI.

Conditions:
6454 FIs.
When customer connects more than 31 rack-servers directly to FI, Servers that are discovered after 31st can not communicate b/w them if the vnics that are talking to each-other has same vntag.
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