Or, imagine one host in cityA and another host in cityB, with a switch
(telephone company) in between, trying to contact each other.
To troubleshoot connection of the host A to the switch, you use debug q921
to troubleshoot connection of host A to host B, you use debug q931.
Bernard
> q921 is debugging layer 2 information and q931 debugs layer 3
> information.
> Just remember the middle number and relate it to the
> appropriate layer.
>
> Eric L. McMasters, CCNA/CCDA
> OSSN - Sr. Network Engineer
>
> Phone: 913.859.1986
> PCS: 913.485.9734
> Fax: 913.859.1234
>
>
> -----Original Message-----
> From: Bond Jeffrey MSgt 93 CSS/SCON
> [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, May 10, 2000 9:13 AM
> To: Cisco (E-mail)
> Subject: ISDN Question
>
>
> Can some tell me what the difference between::: debug q921
> and debug isdn
> q921.
>
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