module problem ?

Answered Question
Apr 17th, 2007
User Badges:

hi netpro,

need ur advice . pls.

Apr 18 10:01:24.297: %C4K_SWITCHMANAGER-4-S2WERRORREPORT: (Suppressed 8 times)PimEthAutoNeg: S2w Read/Write Error for port Fa4/28.

any suggest or solution this will not happened again ? because the entire dept users are affected.



Correct Answer by Danilo Dy about 10 years 1 week ago


As recommended action, please contact Cisco TAC.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 3 (1 ratings)
Danilo Dy Tue, 04/17/2007 - 18:44
User Badges:
  • Blue, 1500 points or more


A read/write error in the specific port.

Recommended Action: Refer to the release notes to verify whether you can see all the symptoms described for CSCef87815. If you do not and do not see any adverse effect on the functionality of the PoE linecards (WS-X4248-RJ45V, WS-X4248-RJ21V, WS-X4548-RJ45V, WS-X4224-RJ45V or WS-X4524-RJ45V), then treat this message an informational message only and no action is required.

Release Note CSCef87815:

On Catalyst 4000/4500 series switches with 802.3af POE cards,

C4K_SWITCHMANAGER-4-S2WERRORREPORT message may be seen on console and POE functionality

may be affected.

The following 802.3af POE cards are affected:

- WS-X4248-RJ45V

- WS-X4248-RJ21V

- WS-X4548-GB-RJ45V

- WS-X4224-RJ45V

- WS-X4524-RJ45V


Using 802.3af POE cards on Catalyst 4000/4500 series switches, phones may

never get power over ethernet and the connected links may never come up.

Disabling the POE functionality by configuring "power inline never" on a POE,

the interface can still link up when connected to non-POE devices. Few

S2WERRORREPORT messages may also be seen on the console.


- C4K_SWITCHMANAGER-4-S2WERRORREPORT messages may be seen on console

- IP Phones that receive power from the connected ethernet ports of the switch would lose power.



Recommended Action:

Contact TAC to open a case.

ney25 Tue, 04/17/2007 - 18:54
User Badges:

hi medan,

thanks for reply, well i am using WS-X4248-RJ45V apparently. so, could it be hardware problem ? action taken just replace to new module ?

unfortunely i cant turn off the inline power as i am using POE device.

Correct Answer
Danilo Dy Tue, 04/17/2007 - 18:56
User Badges:
  • Blue, 1500 points or more


As recommended action, please contact Cisco TAC.

ney25 Tue, 04/17/2007 - 19:02
User Badges:

hi medan,

thanks alot , i will open tac case .




This Discussion