serial interface(how to tell how long its been down)

[seun_ewulomi]

Hi,

We have frame relay network. I will like to know if thre is a way to tell how long a physical interface (in this case a serial int) has been down by checking on the router.

I s there a way to tell or what to look at by doing for example a show int serial0 and tell how long that particular interface has been down.

Or are there any other commands I can invoke on a router to show or tell be how long a physical serial interfaces has been down.

If there are other ways to tell that i dont know of, any suggestions or input will graetly appreciated.

regards,

seun

[mrepko]

would a show log suffice?

[seun_ewulomi]

hi mrepko,

Thanks on the reply. do you mean if I do a

sh logging

I will be able to tell how long a serial interface went down for.

Is it possible to explain in more detal.

thanks,

seun

[o.hassairi]

yes u can if u configure service time

ROUTER2(config)#service timestamps log datetime

then before any log line u will find the date&time

[karl.jones]

If you do a sh int s1/1

the last input counter should give you a rough idea when the int went down or when traffic last passed through this interface.