Cisco Catalyst 2960 Series, Configuration Manual

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Purpose Command
Traces the path that
packets take through
the network. traceroute ip host
Switch# traceroute ip 192.51.100.1
Related Topics
IP Traceroute , on page 1628
Example: Performing a Traceroute to an IP Host, on page 1653
Running TDR and Displaying the Results
To run TDR, enter the test cable-diagnostics tdr interface interface-id privileged EXEC command.
To display the results, enter the show cable-diagnostics tdr interface interface-id privileged EXEC command.
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 or the Ethernet management 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.
Be aware that the debugging destination you use affects system overhead. When you log messages to the
console, very high overhead occurs. When you log messages to a virtual terminal, less overhead occurs.
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 Configuring System Message Logging .
Note
Related Topics
Debug Commands, on page 1630
Using the show platform forward Command
The output from the show platform forward privileged EXEC command provides some useful information
about the forwarding results if a packet entering an interface is sent through the system. Depending upon the
parameters entered about the packet, the output provides lookup table results and port maps used to calculate
forwarding destinations, bitmaps, and egress information.
Most of the information in the output from the command is useful mainly for technical support personnel,
who have access to detailed information about the Switch application-specific integrated circuits (ASICs).
However, packet forwarding information can also be helpful in troubleshooting.
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
1645
How to Troubleshoot the Software Configuration