Troubleshooting with show Commands
Enter the show system command to display the power supply, fan, temperature alarm, system,
and modem status; the number of days, hours, minutes, and seconds since the last system
restart; the baud rate; the MAC address range; and the system name, location, and contact.
Example 13-13 demonstrates typical information displayed by entering the show system
command.
Table 13-4 documents show commands that can assist in troubleshooting hardware,
configuration, or network problems in a switched network environment.
Example 13-13 show system Command Output
Console> show system
PS-Status Fan-Status Temp-Alarm Sys-Status Uptime d,h:m:s
--------- ---------- ---------- ---------- --------------
ok ok off ok 27,17:05:50
Modem Baud MAC-Address-Range
-------- ----- -------------------------------------
disabled 9600 00-04-0b-a0-04-1f to 00-04-0b-a0-05-56
System Name System Location System Contact
------------------------ ------------------------ ----------------------
WBU-Catalyst-5000 5 Closet 202 1/F Luis x5529
Table 13-4 show Commands to Aid in Troubleshooting
Command What the Output Displays
show arp The contents of the ARP table and aging time.
show atm The ATM interfaces, traffic, VC and VLAN information and status.
show cam dynamic The dynamic CAM table.
show config The current system configuration.
show fddi The settings of the FDDI/CDDI module.
show flash The Flash code names, version numbers, and sizes.
show interface The Supervisor module network interface information.
show ip route The IP route information.
show log The system or module error log.
show mac The MAC counters for all the installed modules.
show module Module status and information (hardware/firmware/software).
show netstat Statistics for the various TCP/IP stack protocols and state of active network
connections.
show port The port status and counters for all installed modules.
show spantree The Spanning Tree information for the VLANs, including port states.
show system The status of the power supply, fan, temperature alarm, system, and uptime.
show test The results of diagnostic tests on the specified modules.
show trunk The ISL/Dot1Q information including trunking status (trunking/
nontrunking).
show vlan The virtual LAN type, status and assigned modules and ports.