Which setup is correct when you configure Cisco UCS B-Series VICs (M81KR/12xx VICs) for Cisco Unified Contact Center Enterprise on Cisco UCS B-Series deployments?

Question

Options

• AEnable Fabric Failover as an extra redundancy measure so that traffic from the UCS B-Series
• BDisable the Fabric Failover option.
• CDisregard this option because either mode is fine with Cisco Unified CCE on UCS B-Series
• DEnable this Fabric Failover when the connected upstream network is operating in a Common
• EDisable this Fabric Failover when the connected upstream network is operating in a Disjointed

• A
  8% (3)
• B
  88% (35)
• C
  3% (1)
• E
  3% (1)

Explanation

Disabling Fabric Failover (option B) is the Cisco-validated requirement for Unified CCE deployments on UCS B-Series with M81KR/12xx VICs because the automatic failover mechanism can cause MAC address shifts and perceived link flaps that destabilize UCCE's stateful call-processing components - UCCE manages its own redundancy and does not tolerate unexpected mid-session fabric switches.

Why the distractors fail:

• A sounds like a safety net but is precisely the problem - enabling Fabric Failover introduces the disruption UCCE cannot handle.
• C is wrong because the two modes are not equivalent for UCCE; the choice has documented impact on call-center stability.
• D & E attempt to make the answer conditional on upstream Layer 2 topology (Common vs. Disjointed domain), which is relevant for some workloads but irrelevant here - for UCCE the answer is unconditional: always disable.

Memory tip: Think "CCE = No FO." Contact Center Enterprise owns its own redundancy; letting the VIC do automatic fabric failover behind UCCE's back causes chaos. When in doubt, disable it and let the application layer handle recovery.

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