Cisco 802 Installation And Configuration Manual page 17

Command
show isdn status
(user EXEC mode).
See output 1 example
following this table.
debug ppp negotiation,
debug ppp
authentication
(privileged EXEC mode)
See output 2 example
following this table.
Output 1 Example (show isdn status)
The current ISDN Switchtype = basic-ni1
ISDN BRI0 interface
Layer 1 Status:
DEACTIVATED
Layer 2 Status:
Layer 2 NOT Activated
Layer 3 Status:
No Active Layer 3 Call(s)
Activated dsl 0 CCBs = 0
Total Allocated ISDN CCBs = 0
isdn#
ISDN BR0:TX ->
ISDN BR0:RX <-
isdn#
ISDN BR0:TX ->
ISDN BR0:RX <-
ISDN BR0:TX ->
ISDN BR0:RX <-
isdn#und all
isdn#show isdn st
The current ISDN Switchtype = basic-dms100
ISDN BRI0 interface
78-10368-03
Possible Problem
• Improperly connected cable.
• Damaged IDSL cable.
• Problem with IDSL line.
• Software configuration error for
router connected to Cisco 802
IDSL or Cisco 804 IDSL router.
• PAP or CHAP authentication
failed.
RRp sapi = 0
RRf sapi = 0
RRp sapi = 0
RRf sapi = 0
RRp sapi = 0
RRf sapi = 0
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 80, State = MULTIPLE_FRAME_ESTABLISHED
TEI = 81, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
Solution
• Refer to troubleshooting information in Cisco 800
Series Routers Hardware Installation Guide.
• Order a new red IDSL cable from your Cisco
reseller.
• Contact your telephone service provider to report
a problem.
If the problem continues after these steps, call your
Cisco reseller.
• Check your router configuration. See the
documentation that shipped with your router for
more information.
• For PAP, check the settings of the PAP hostname
and password for correct spelling and use of
uppercase and lowercase letters. If settings are
incorrect, reconfigure them.
• For CHAP, clear the existing hostname and
password. Reconfigure the hostname and
password.
tei = 80 nr = 1
tei = 80 nr = 1
tei = 81 nr = 1
tei = 81 nr = 1
tei = 80 nr = 1
tei = 80 nr = 1
Installing and Configuring Cisco 802 IDSL and Cisco 804 IDSL Routers
Troubleshooting Using Debug Commands
17