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Catalyst 3750-E and Catalyst 3560-E Switch Hardware Installation Guide
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Chapter 4 Troubleshooting
Finding the Switch Serial Number
Finding the Switch Serial Number
If you contact Cisco Technical Assistance, you need to know the serial number of your switch. See
Figure 4-1 to find the serial number on your switch. You can also use the show version privileged EXEC
command to get the switch serial number.
Figure 4-1 Switch Serial Number Location
SN: XXXNNNNXXXX
200118, 781-00478-01
How to Replace a Failed Stack Member
If you need to replace a failed stack member, you can hot swap or replace the switch by following this
procedure (only Catalyst 3750-E switches):
1. Get a replacement switch that has the same model number as the failed switch.
2. Power down the failed switch.
3. Make sure the replacement switch is powered off, and then connect the replacement switch to the
stack.
If you had manually set the member numbers for any members in the stack, you need to manually
assign the replacement switch with the same member number as the failed switch. To manually
assign the member number, see the switch software configuration guide.
4. Make the same Gigabit Ethernet connections on the replacement switch that were on the failed
switch.
