How to check network link in AiX 4.3.3

[trifo]

Hi!

I would like to know the way of checking if network link is alive or dead. - There is no LED on the interface, thus I would need a software solution.

Thanks in advance,

--Trifo

 

[krazy412]

You can try entstat ent0. Towards the bottom of this you will see if the link is up or down.

CP

 

[sbix]

For ethernet device see "entstat" command
For token ring device see "tokstat" command

 

[trifo]

Thanks, but

entstat reports the same as ifconfig does. Thus "UP" status does not mean the link is alive.

--Trifo

 

[sbix]

There is an empyric way of obtain this info.
you must run entstat -dr ent0|grep 'No Carrier Sense' and note the number
Then you have to ping the default gateway (if you got some answer obviously the link is up but the gateway could be down)
If you execute entstat -dr ent0 the number of 'No Carrier Sense' should be the same of the previous run, otherwise you aren't connected

 

[trifo]

Thanks sbix! It seems to be a good idea. Anyhow, do you know the interval between link tests performed?

Well, I'm going to check it on a working box. I mean: device reset - cable unplug - wait for a certain amount of time - cable replug - check number of 'No carrier sense' errors.

--Trifo

 

[Robnhood]

I believe netstat -i will also let you know about the status of the link light.

Craig

http://www.SecurelySpeaking.com