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Cisco IP phone cannot obtain voice vlan on 800 Series switch

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Information

 
TitleCisco IP phone cannot obtain voice vlan on 800 Series switch
Symptoms
Cisco IP phone does not receive Network Policy vlan using LLDP-MED
Environment
  • 800 Series
  • LLDP
  • LLDP-MED
  • Firmware 01.03.04.0001
  • Cisco IP phone 7911G
  • Cisco IP phone firmware 9.4(2)SR2 (27-JUN-2016)
Cause
The Cisco 7911G phone is sending out an "illegal" LLDP-MED PDU  which is then dropped when received by the 800 series switch
Resolution
Contact the Gtac for further assistance
Additional notes

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