[mrtg] Re: OID Cisco 3640

Steve Haavik shaavik at soc.lib.md.us
Tue Apr 20 18:29:47 MEST 2004

On Tue, 20 Apr 2004, Hagemann Christian wrote:

> I want to monitor used ISDN & analog Lines in One Line
> like No of active D-channels.
> Is this possible?

Yes. I'm currently graphing the number of active modems on our 3660s with
PRI and mica modem cards. Here are the interesting OIDs (at least I find
them interesting.)

Installed modems:

Modems in use:

Modems available:

Modems unavailable:

Modems offline:

Modems dead:

Walking . and adding up the values will give
you the total number of B-channels you have. If you had 2 PRIs you could
just add . and

The isdnSignalingStatsTable works the same way. Just remember these are
counter entries, so you may want seperate graphs for each PRI.

. is the number of inbound calls.
. is the number of inbound calls that actually
. is the number of outbound calls.
. is the number of outbound calls that
actually connected.

I could have sworn that there was an easy way to get the number of
B-channels in use, but I can't find it right now. I think I've hosed up my
Getif mibs again...

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