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Building Cisco Remote Access Networks
book

Building Cisco Remote Access Networks

by Wayne Lawson
November 2000
Intermediate to advanced content levelIntermediate to advanced
608 pages
16h 50m
English
Syngress
Content preview from Building Cisco Remote Access Networks
100 Chapter 3 • Using PPP To Provide Remote Network Access
First, we need to check the status of the physical layer:
Cisco command: show isdn stat
The current ISDN Switchtype = basic-nil
ISDN BRIO interface
Layer 1 Status:
DEACTIVATED
Layer 2 Status:
Layer 2 NOT Activated
Layer 3 Status:
No Active Layer 3 Call(s)
Activated ds1 0 CCBs = 0
Total Allocated ISDN CCBs = 0
The output above indicates that there is a problem with the physical
layer. The layer 1 status being “DEACTIVATED” indicates this. This could
be caused by a bad cable, a bad NT-1 device (or no power to an external
NT-1 device), or a bad demarc.
In this instance, we had a bad cable between the ...
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Publisher Resources

ISBN: 9781928994138