[INUG-Users] ISDN Layer 1 deactivated

[Michael Shannon (mishanno)]

> >
> > Tony,
> >
> > Different MIB - you'll want to look at the 
> isdnLapdOperStatus variable 
> > in the ISDN-MIB.  That should give you the layer 1/2 status.
> >
> > Michael Shannon
> >
> > -----Original Message-----
> > From: users-bounces at netcoolusers.org
> > [mailto:users-bounces at netcoolusers.org] On Behalf Of tonyb2
> > Subject: [INUG-Users] ISDN Layer 1 deactivated
> >
> > Hello,
> >
> > I have been asked to arrange for Precision 3.6 to detect  
> ISDN Layer 1 
> > Status = DEACTIVATED Apparently this is a fault condition..
> >
> > # show isdn stat
> > ISDN BRI0 interface ISDN Switchtype = basic-net3 Layer 1 Status :
> > DEACTIVATED
> > ..
> >
> > However I dont know how this fault condition is related to familiar 
> > fields such as AdminStatus or OperStatus.
> >
> > Anyone care to advise on possible solutions?
> Thanks Micheal,
> I note in passing that you have just made a top-posted post. 
> And I am responding with a bottom-posted post ;-) 
> http://en.wikipedia.org/wiki/Top-posting#Top-posting
> 
> OK back the ISDN stuff.
> Now realise my mission is to ensure that ISDN backup (ie 
> normally down) links do not have an underlying condition that 
> prevents them from coming up when required.
> I reckon that if Layer 1 status changes to Deactivated then 
> this will be reflected in the OperStatus  being set to  
> lowerLayerDown(7) rather than up(1),  down(2),  testing(3) 
> (from the RFC2863.mib referenced by ifOperStatus in the aoc file).
> But I have not yet had the opportunity of checking this out.
> Anyone care to venture an opinion on the way forward?
> 
> Thanks muchly in advance for any further help!
> 
> Tony
> 

Tony,

Top-posting actually seems to be the norm on this list, but we'll go
with bottom-posting for this thread.

I don't know where your devices are located, but we have seen odd
behavior in Europe, where the ISDN status would go to Layer1Deactivated
- even though the interface was fully functionaly and ready to place a
call.  When the router went to place the call, it would bring up layer
1, then 2, then finally establish the call.  For the devices at those
sites (sorry, I can't remember which countries exactly), the only thing
that actually worked to tell us the status of the interface was to
attempt to place a test call.

Michael