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Cisco Bug: CSCur34011 - PC connected to 88xx intermittently loses network connectivity

Last Modified

Jun 18, 2020

Products (34)

  • Cisco IP Phone 8800 Series
  • Cisco Unified IP Phone 7962G
  • Cisco IP Phone 7841
  • Cisco Unified IP Phone 7945G
  • Cisco Unified IP Phone 9951
  • Cisco IP Phone 8851
  • Cisco Unified SIP Phone 3905
  • Cisco Unified IP Phone 6941
  • Cisco IP Phone 7821
  • Cisco Unified IP Phone 7911G
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Known Affected Releases

10.2(2)

Description (partial)

Symptom:
PC connected to the "PC Port" of the 88xx (except 8831) intermittently loses network connectivity.

Symptoms of network connectivity loss includes:
   - Microsoft outlook displays a message that connection to the server is lost
   - Browse page loading is slow or stops loading
   - Ping timeout
   - Wireshark traces shows packet loss between PC and network switch

PC/laptop network card driver that is non-compliant with the IEEE 802.3az compliance may exhibit any of the above symptoms.

Conditions:
Energy Efficient Ethernet (EEE) is enabled on PC and network switch may or may not have EEE enabled.

Related Community Discussions

CP-8841 Pass through network settings - ongoing connectivity issues.
I'm looking for some advice on an issue we are having with a recently installed Cisco phone system. The specs are:  CP-8841, CP-8851, CP-8831-K9 phones C2921-CME-SRST/K9 Cisco 2921 Router. 1 x Cisco Call Manager Express (CME) Communication Manager Express  1 x Cisco Unity Express (CUE) Release 8.6 ( Voice messaging service) SCUE-ISM-8.6-K9 Unity Express License - 5 Mailbox –  CUCM and CUCME  Client machines receive their network connection through the phone's internal switch and this is where the ...
Latest activity: Nov 07, 2015
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  • Status
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