Cisco Systems 520 Troubleshoot IP Address Problems, IP Address Is Not Received from Dhcp Server

Chapter 7 Troubleshooting the Switch

Troubleshoot IP Address Problems

•Restart the Switch, page 7-7

•Reset the Switch, page 7-8

•Recover a Username or Password, page 7-9

•Recover the Switch Software, page 7-10

•Troubleshoot a Failed Software Upgrade, page 7-11

•If You Need Further Help, page 7-11

Troubleshoot IP Address Problems

Here are some basic troubleshooting for problems related to the switch IP address.

•IP Address Is Not Received from DHCP Server, page 7-2

•Switch Has Wrong IP Address, page 7-2

IP Address Is Not Received from DHCP Server

If the switch does not receive an IP address from an upstream device operating as a DHCP server, make sure that the upstream device is operating as a DHCP server and again follow the procedures in the “Set Up the Switch (Existing Network)” section on page 2-2.

Switch Has Wrong IP Address

If the switch is installed in your network but you cannot access the switch because it has the wrong IP address, assign a new switch IP address. To do this, follow the procedure in the “Access Direct Managed Mode” section on page 7-6, and then update the switch IP address on the device manager Express Setup window. You also can change the switch IP address through the Cisco Configuration Assistant.

	User Guide for the Catalyst Express 520 Switches
7-2	OL-12761-02