Cisco Systems OL-6426-02 Benutzerhandbuch

Seite von 196
B E TA   D R A F T   -   C I S C O   C O N F I D E N T I A L
14-6
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Chapter 14      Troubleshooting
  ATM Troubleshooting Commands
 describes some of the fields shown in the command output.
debug atm Commands
Use the debug commands to troubleshoot configuration problems that you might be having on your 
network. The debug commands provide extensive, informative displays to help you interpret any 
possible problems. 
Guidelines for Using Debug Commands
Read the following guidelines before using debug commands to ensure appropriate results.
All debug commands are entered in privileged EXEC mode.
To view debugging messages on a console, enter the logging console debug command.
Most debug commands take no arguments.
To disable debugging, enter the undebug all command.
To use debug commands during a Telnet session on your router, enter the terminal monitor 
command.
Caution
Debugging is assigned a high priority in your router CPU process, and it can render your router unusable. 
For this reason, use debug commands only to troubleshoot specific problems. The best time to use debug 
commands is during periods of low network traffic so that other activity on the network is not adversely 
affected.
You can find additional information and documentation about the debug commands in the
.
debug atm errors Command
Use the debug atm errors command to display ATM errors. The no form of this command disables 
debugging output. 
 shows a sample output.
Table 14-2
show atm interface Command Output Description
Field
Description
ATM interface
Interface number. Always 0 for the Cisco 1800 fixed-configuration routers.
AAL enabled
Type of AAL enabled. The Cisco 1800 fixed-configuration routers support AAL5.
Maximum VCs
Maximum number of virtual connections this interface supports.
Current VCCs
Number of active virtual channel connections (VCCs).
Maximum 
Transmit
Channels
Maximum number of transmit channels.
Max Datagram 
Size
Configured maximum number of bytes in the largest datagram.
PLIM Type
Physical layer interface module (PLIM) type.