12-5
Cisco Secure Router 520 Series Software Configuration Guide
OL-14210-01
Chapter 12 Troubleshooting
ATM Troubleshooting Commands
show atm interface Command
To display ATM-specific information about an ATM interface, use the show atm interface atm 0
command from privileged EXEC mode, as shown in Example 12-3.
Example 12-3 Viewing Information About an ATM Interface
Router# show atm interface atm 0
Interface ATM0:
AAL enabled: AAL5 , Maximum VCs:11, Current VCCs:0
Maximum Transmit Channels:0
Max. Datagram Size:1528
PLIM Type:INVALID - 640Kbps, Framing is INVALID,
DS3 lbo:short, TX clocking:LINE
0 input, 0 output, 0 IN fast, 0 OUT fast
Avail bw = 640
Config. is ACTIVE
Table 12-2 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 debugging command.
• Most debug commands take no arguments.
Tab l e 12-2 show atm interface Command Output Description
Field Description
ATM i nt erf ac e Interface number. Always 0 for the Cisco Secure Router 520 Series router.
AAL enabled Type of AAL enabled. The Cisco Secure Router 520 Series 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.