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Cisco Bug: CSCuj81404 - Documentation is unclear about VT-d functionality

Last Modified

Sep 08, 2015

Products (7)

  • Cisco Unified Communications Manager (CallManager)
  • Cisco Intercompany Media Engine
  • Cisco Business Edition 5000 Version 9.1
  • Cisco Unity Connection Version 9.1
  • Cisco Business Edition 6000 Version 9.1
  • Cisco Unified Communications Manager Version 9.1
  • Cisco Unified Communications Manager Session Management Edition

Known Affected Releases

8.0 9.1(2)

Description (partial)


Documentation indicates "Verify that VT I/O Redirection is disabled in the CPU options."

This is unclear to how UCS BIOS needs to be configured. The directions in the document does not explain how to disable VT I/O Redirection and VT I/O Redirection cannot be found in BIOS. Documentation must read VT-D coherency must be disabled as well. UCS do not support any of the VT-d functionality in UC on UCS.

Also, BIOS directions has to be updated to allow customer to follow BIOS menu properly.

Setup for UCS for Cisco VoIP environment.
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