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Cisco Bug: CSCsz48543 - LLDP: Phone temporarily flaps to Data VLAN when Chassis ID changes

Last Modified

Feb 22, 2014

Products (28)

  • Cisco Unified IP Phone 7900 Series
  • Cisco Unified IP Phone 7971G-GE
  • Cisco Unified Wireless IP Phone 7920
  • Cisco Unified IP Phone 7962G
  • Cisco Unified IP Phone 7945G
  • Cisco Unified IP Phone Expansion Module 7914
  • Cisco Unified Wireless IP Phone 7925G
  • Cisco Unified IP Phone 7911G
  • Cisco Unified IP Phone 6941
  • Cisco Unified IP Phone 7961G-GE
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Known Affected Releases


Description (partial)

 Phone may temporarily be seen on the data vlan if the LLDP Chassis ID changes on 
the fly.

 Profinet support is enabled on the switch.
 Similar problem may manifest if the phone experiences a link down event on its 
switchport (connected to the switch).
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Related Community Discussions
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