optic fiber card first shows link but after ifup gives a Link down

[Joel Jaeggli]

On Mon, 16 Jan 2006, dev.loop at gmail.com wrote:

> On 1/13/06, valentin antonescu <valduboisvert at yahoo.com> wrote:
>>
>> I dont have much experience here, but after the link
>> goes down, did you try to connect to that port using a
>> laptop? I had soemthing simmilar once and it took me
>> one month to realize that the main switch was shuting
>> donwn the port as a result of a security policy.
>
>
> Thanks for that suggesstion. I tried and found out, that its not due to a
> shut down port on the switch.
> When connecting a computer to the same port afterwards, the port works
> perfectly.
>
> Hmm. Gotta check for something else.

The fiber interface in the pc undoubtedly does autonegotiation. The port 
on the other side may not. with miitool you can force the interface to the 
values you have set on the switch/router on te other end.

> Cheers,
> /dev/loop
>

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Joel Jaeggli  	       Unix Consulting 	       joelja at darkwing.uoregon.edu
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