[LARTC] detecting link failure

[LARTC] detecting link failure

[nitin panjwani]

Hi All,

I am running some tests in which I have to bring down
my interface down as soon as I tear down the cable.
Cable tearing results only in the link failure(as link
light went off), but it doens't bring my interface
down. 

Is there a way to bring the interface down as soon as
my link fails, probably using 'ip link' or 'ip
monitor'. Does anyone know about it.

If there is some hardware monitering tool that can
detect the link failure, probably I can use this to
write a small program which will bring down the
interface as soon as I link failure is detected 

Thanks,
NItin 




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Re: [LARTC] detecting link failure

[Arthur van Leeuwen]

On Tue, 19 Nov 2002, nitin panjwani wrote:

> Hi All,
>
> I am running some tests in which I have to bring down
> my interface down as soon as I tear down the cable.
> Cable tearing results only in the link failure(as link
> light went off), but it doens't bring my interface
> down.
>
> Is there a way to bring the interface down as soon as
> my link fails, probably using 'ip link' or 'ip
> monitor'. Does anyone know about it.

Monitor using mii-tool.

> If there is some hardware monitering tool that can
> detect the link failure, probably I can use this to
> write a small program which will bring down the
> interface as soon as I link failure is detected

Well, you *could* theoretically write a kernel module that would monitor
link status and call back to userland... that would result in the
quickest teardown of the link.

Doei, Arthur.

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