Guest

Preview Tool

Cisco Bug: CSCus35889 - "EEE" on 2960X and PD device causing intermittent link flap

Last Modified

Aug 13, 2019

Products (150)

  • Cisco Catalyst 2960-X Series Switches
  • Cisco Catalyst 2960X-24PS-L Switch
  • Cisco Embedded Service 2020 CON B Switch
  • Cisco Catalyst 2960X-24PD-L Switch
  • Cisco Catalyst 3560X-48T-E Switch
  • Cisco Catalyst 2960S-24PD-L Switch
  • Cisco Catalyst 2960S-F48FPS-L Switch
  • Cisco IE 2000-16TC-G Industrial Ethernet Switch
  • Cisco Catalyst 2960X-48LPS-L Switch
  • Cisco Catalyst 3560X-48U-S Switch
View all products in Bug Search Tool Login Required

Known Affected Releases

15.2(2)E

Description (partial)

Symptom:
Dec 30 03:34:54: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Dec 30 03:35:04: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up
Dec 30 03:49:50: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down
Dec 30 03:50:00: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up

Line protocol flapping, some times with link up/down also, which would cause PDs like AP disconnected/reboot.

Conditions:
When "Energy-Efficient Ethernet" feature enabled on both Catalyst 2960X switchport and on the PDs.

Affected images:
c2960x-universalk9-mz.152-2.E.bin
c2960x-universalk9-mz.150-2.EX5

Related Community Discussions

2960X 48 port PoE Cisco Phones Flapping ports
Bug ID  - <key>CSCus35889</key> - (2960-X) &quot;EEE&quot; and PD device causing intermittent link flap - no fix yet I am trying this fix: : eee has been disabled on all interfaces -  &quot;no power efficient-Ethernet&quot; (be careful with this command as it restarts the interface) Hopefully the cisco 7911 phones will stop randomly reloading or ports flapping.
Latest activity: Dec 31, 2015
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.