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Cisco Bug: CSCun05383 - Certificate size is too small on 6901 phones for 802.1x Authentication

Last Modified

Mar 14, 2014

Products (37)

  • Cisco IP Phone 8800 Series
  • Cisco Unified SIP Phone 3905
  • Cisco Unified IP Phone Expansion Module 7914
  • Cisco Unified IP Phone 7945G
  • Cisco Unified IP Phone 7971G-GE
  • Cisco Unified IP Phone 7962G
  • Cisco Unified IP Phone 9951
  • Cisco Unified Wireless IP Phone 7920
  • Cisco Unified IP Phone 7941G
  • Cisco Unified IP Phone 6961
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Known Affected Releases


Description (partial)

802.1x Authentication failure on 6901 phones - SIP Firmware

6901 phones using LSC does not send its certificate during the EAP-TLS Authentication Process.
On the radius server we can see authentication timeout.
The radius server is sending long TLS certificates (over 4096 bytes) whereas phone is just handling 2600 to 4096 bytes

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