User Guide
3-5
Cisco ME 3400 Ethernet Access Switch Hardware Installation Guide
OL-7677-04
Chapter 3 Troubleshooting
Locating the Switch Serial Number
Caution This procedure clears the IP address and all configuration information stored on the switch. Do not 
follow this procedure unless you want to completely reconfigure the switch.
To reset the switch:
1. At the switch prompt, enter enable, and press Return or Enter.
2. At the Privileged EXEC prompt, switch#, enter setup and press Return or Enter.
The switch displays the prompt to run the initial configuration dialog. The switch now behaves like an 
unconfigured switch. You can configure the switch by using the CLI setup procedure described in 
Appendix D, “Configuring the Switch with the CLI-Based Setup Program.” 
Locating the Switch Serial Number
If you contact Cisco Technical Assistance, you need to know the serial number of your switch. Use these 
figures to locate the serial number on your switch. You can also use the show version command to get 
the serial number.
• Figure 3-1, Serial Number Location on the Cisco ME 3400-24TS-AC and DC Switches
• Figure 3-2, Serial Number Location on the Cisco ME 3400G-12CS-AC and DC Switches
• Figure 3-3, Serial Number Location on the Cisco ME 3400G-2CS Switch
• Figure 3-4, Serial Number Location on the Cisco ME 3400-24FS Switch
Figure 3-1 Serial Number Location on the Cisco ME 3400-24TS-AC and DC Switches 
Figure 3-2 Serial Number Location on the Cisco ME 3400G-12CS-AC and DC Switches










