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Cisco Bug: CSCuq43574 - 79XX Phone DHCP client intermittently stops after port authentication

Last Modified

Apr 04, 2017

Products (1)

  • Cisco Unified IP Phone 7900 Series

Known Affected Releases


Description (partial)

After loading new firmware, intermittently 79XX phones loose IP after port authentication and does not register to CUCM

Loading new firmware ( upgrade or down grade)
79XX phone using port authentication (EAP-TLS)
CUCM 8.x and 9.x
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