P550 Link down and up

[tlelievre]

P550 send Alarm message in event log which show link down and up in few seconds(3 at max) for each port but port by port.
I do not know why this error messages appears.Apparently, PC connected to these ports loose some ping.
Please help me.
Thanks.

 

[vino42]

Which type of card do you have(M5520-100TX)?
Go to event log and see which warning do you have?
Try with console : Sh lo, or , sh al,
See how is network card setup (auto neg) and port setup.
Bye

 

[tlelievre]

Effectively , the cards are M5520-100TX
In event log, the warning just say link down and few minutes after link up.

9418 7 03-Jul-09 09:12:43 Alarm(60) Link Up Status = Okay : Port 4.19. [Port 4.19]
9417 7 03-Jul-09 09:12:41 Alarm(60) Link Down Status = No Link : Port 4.19. [Port 4.19]

and the pc was on.

I have try with network card in autonegotiation or not, with pc card n auto and not.