Troubleshooting guide

5-20
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-02
Chapter 5 Troubleshooting Switch Router ATM Interface Connections
Troubleshooting 155-Mbps and 622-Mbps Interfaces
For detailed information about using the debug commands, see Appendix A, “Debugging a Switch
Router.”
To isolate problems and troubleshoot the physical connections of the ATM switch router, use the
following debug commands in privileged EXEC mode. Use the no form of these commands to disable
debugging.
Refer to the “Configuring Interfaces” chapter in the ATM Switch Router Software Configuration Guide
to confirm the interface configuration.
Troubleshooting 155-Mbps and 622-Mbps Interfaces
This section describes specific processes and commands used to troubleshoot the 155-Mbps and
622-Mbps port adapters.
Port Adapter LEDs
The port adapter faceplate LEDs provide status information for individual 155-Mbps and 622-Mbps
single-mode and multimode fiber-optic and UTP interface connections of the port adapter. The LEDs are
described in Table 5-3.
Note Use the show controllers command to remotely display the LED status.
Command Purpose
debug ports {aal5 [interface atm
card/subcard/port] | dcu | ds3e3 | netclock | oc12
| oc3 | t1e1}
Starts debugging at the driver level for a
specific port.
debug atm oam-all Starts debugging, using generic OAM
cells.
debug atm oam-pkt Starts debugging, using OAM packets.
debug atm errors Starts debugging to display all ATM
errors.
no debug all Disables all debugging.