WS-C3750-48P system error message... need help

[ekhoo]

All,

Does anyone come across to this system error massages on 3750 switch? I can not find any ref regard this error from Cisco website.

Feb 10 22:32:41.262 UTC: %SUPERVISOR-3-IIC_INIT: IIC Reinitialized

Feb 10 22:35:54.284 UTC: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to up

Feb 10 22:35:58.545 UTC: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to down

Feb 10 22:36:05.525 UTC: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to up

Can any tell me what the messages means and why it occurs? Thanks in advances

regards,

Sean

[Roberto Salazar]

What IOS version is the switch running? The message:

Feb 10 22:32:41.262 UTC: %SUPERVISOR-3-IIC_INIT: IIC Reinitialized

What kind of media converter is on interface gig 1/0/1? I am thinking it's related to that interface flapping. Is the error peristent? If it is, does the error stop when you shut down the interface gig 1/0/1?

[ekhoo]

Media type is 1000BaseSX SFP

IOS version is 12.2(25)SEB4

It disappear after a reload. But I really want to find the root cause to prevent it happens again. It bring down the the interface everytime it happens.

do you know what does "IIC Reinitialized" means?

[ekhoo]

Found the bug.. CSCee92228

[ekhoo]

Thanks everyone who tried to help.

[Roberto Salazar]

Check out bug:CSCee88632 too. I can only say that interface controller register access failed because of IIC bus lockup - maybe due excessive flap of the interface. switch s/w cannot do anything under such circumstances but log an error.

[ekhoo]

bosalaza,

You could be right. Nobody touch the switch during this problem occurred. I may need to research more on this issue. Thanks

regards,

sean