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Total Data (last 30 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
T1 3 is up.
Applique type is Channelized T1
No alarms detected.
Version info of slot 0: HW: 4, Firmware: 16, PLD Rev: 0
Manufacture Cookie Info:
EEPROM Type 0x0001, EEPROM Version 0x01, Board ID 0x42,
Board Hardware Version 1.32, Item Number 800-2540-2,
Board Revision A0, Serial Number 11488142,
PLD/ISP Version 0.0, Manufacture Date 10-Nov-1998.
Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
Data in current interval (757 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 30 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
If counters increase on a specific T1 controller, look closely at the error statistics. Focus on the
current interval that is indented under the display field Data in current interval.
Error counters are recorded over a 24-hour period in 15-minute intervals. You must specify a specific
controller number to see this detailed information. Enter the clear controller t1 number command
before you look for current error statistics. Error counters stop increasing when the controller is
configured correctly.
Step 5 Troubleshooting the Modem Call State Machine
Troubleshoot the modem s call state machine (CSM) by using the debug modem csm command.
Troubleshoot the CSM if you do not see PPP debug output, and the show isdn status command and
debug isdn q931 command demonstrate good working status:
ISP_NAS# debug modem csm
Modem Management Call Switching Module debugging is on
ISP_NAS# show debug
Modem Management:
Modem Management Call Switching Module debugging is on
38 Access VPN Solutions Using Tunneling Technology
Step 5 Troubleshooting the Modem Call State Machine
Send a PPP modem call into the NAS. Transition states in the debug output signify that everything
is operating properly. If you do not see transition states, look at the disconnect reason for the modem.
For example, enter the show modem log 1/4 command.
See the following example of successful debug output for the debug modem csm command:
ISP_NAS#
Mar 13 11:13:12.487: EVENT_FROM_ISDN::dchan_idb=0x60EA108C, call_id=0x1D, ces=0x
1bchan=0x0, event=0x1, cause=0x0
Mar 13 11:13:12.487: VDEV_ALLOCATE: slot 1 and port 4 is allocated.
Mar 13 11:13:12.487: EVENT_FROM_ISDN:(001D): DEV_INCALL at slot 1 and port 4
Mar 13 11:13:12.487: CSM_PROC_IDLE: CSM_EVENT_ISDN_CALL at slot 1, port 4
Mar 13 11:13:12.487: Mica Modem(1/4): Configure(0x1 = 0x0)
Mar 13 11:13:12.487: Mica Modem(1/4): Configure(0x23 = 0x0)
Mar 13 11:13:12.487: Mica Modem(1/4): Call Setup
Mar 13 11:13:12.611: Mica Modem(1/4): State Transition to Call Setup
Mar 13 11:13:12.611: Mica Modem(1/4): Went offhook
Mar 13 11:13:12.611: CSM_PROC_IC1_RING: CSM_EVENT_MODEM_OFFHOOK at slot 1, port 4
Mar 13 11:13:12.631: EVENT_FROM_ISDN::dchan_idb=0x60EA108C, call_id=0x1D, ces=0x1
bchan=0x0, event=0x4, cause=0x0
Mar 13 11:13:12.631: EVENT_FROM_ISDN:(001D): DEV_CONNECTED at slot 1 and port 4
Mar 13 11:13:12.631: CSM_PROC_IC4_WAIT_FOR_CARRIER: CSM_EVENT_ISDN_CONNECTED at slot 1,
port 4
Mar 13 11:13:12.631: Mica Modem(1/4): Link Initiate
Mar 13 11:13:13.751: Mica Modem(1/4): State Transition to Connect
Mar 13 11:13:18.903: Mica Modem(1/4): State Transition to Link
ISP_NAS#
Mar 13 11:13:37.051: Mica Modem(1/4): State Transition to Trainup
Mar 13 11:13:38.731: Mica Modem(1/4): State Transition to EC Negotiating
Mar 13 11:13:39.387: Mica Modem(1/4): State Transition to Steady State
Mar 13 11:13:42.007: %LINK-3-UPDOWN: Interface Async5, changed state to up
Mar 13 11:13:46.751: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async5, cha
nged state to up
Mar 13 11:14:41.803: Mica Modem(1/4): State Transition to Steady State Speedshif ting
Mar 13 11:14:44.139: Mica Modem(1/4): State Transition to Steady State
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