Oh ya. I turn up PRI's all the time at work and have seen a number of them
stating that layer 1 was down and layer 2 up. Cisco's only response was a
bug. The line is actually up though.
Adam Hickey
[EMAIL PROTECTED]
----- Original Message -----
From: "Elias Aggelidis" <[EMAIL PROTECTED]>
To: "John Neiberger" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Sunday, November 26, 2000 1:24 AM
Subject: Re: Line Down , Protocol Up ?
> I have seen this question in one of the cisco exams !
>
> The obvious answer was BUG ERROR !
>
> ----- Original Message -----
> From: "John Neiberger" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, November 23, 2000 4:22 AM
> Subject: Re: Line Down , Protocol Up ?
>
>
> > Think this through starting at the first OSI layer. If the line is down
> > (physical) layer, then how could the next higher layer--which depends on
> > lower layers--ever possibly hope to function?
> >
> > It can't. You can't have a functional datalink layer without first
having
> > valid physical connectivity.
> >
> > > Hi Gang,
> > > Just been looking at the binary possibilities of
> > > these options i.e 0 0
> > > 0 1
> > > 1 0
> > > 1 1
> > >
> > > And feel thet that Line Down, Protocol Up is
> > > impossible.
> > > Can anyone confirm this or has anyone seen anything
> > > quirky of this nature.
> > >
> > > Regards,
> > >
> > > Phil.
> > >
> > >
> > >
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