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Cisco IE 2000 Switch Software Configuration Guide
OL-25866-01
Chapter 46 Troubleshooting
Monitoring Information
Redirecting Debug and Error Message Output
By default, the network server sends the output from debug commands and system error messages to the
console. If you use this default, you can use a virtual terminal connection to monitor debug output
instead of connecting to the console port.
Possible destinations include the console, virtual terminals, internal buffer, and UNIX hosts running a
syslog server. The syslog format is compatible with 4.3 Berkeley Standard Distribution (BSD) UNIX
and its derivatives.
Note Be aware that the debugging destination you use affects system overhead. Logging messages to the
console produces very high overhead, whereas logging messages to a virtual terminal produces less
overhead. Logging messages to a syslog server produces even less, and logging to an internal buffer
produces the least overhead of any method.
For more information about system message logging, see Chapter 35, “Configuring System Message
Logging.”
Monitoring Information
Physical Path
You can display the physical path that a packet takes from a source device to a destination device by
using one of these privileged EXEC commands:
• tracetroute mac [interface interface-id] {source-mac-address} [interface interface-id]
{destination-mac-address} [vlan vlan-id] [detail]
• tracetroute mac ip {source-ip-address | source-hostname}{destination-ip-address |
destination-hostname} [detail]
For more information, see the command reference for this release.
SFP Module Status
You can check the physical or operational status of an SFP module by using the show interfaces
transceiver privileged EXEC command. This command shows the operational status, such as the
temperature and the current for an SFP module on a specific interface and the alarm status. You can also
use the command to check the speed and the duplex settings on an SFP module. For more information,
see the show interfaces transceiver command in the command reference for this release.
