From factory default, the M4100 series switch received its management IP address from DHCP server. If a DHCP server is not present, it will be assign a default IP address of 169.254.100.100. On some of the switches, the management IP address got assigned 192.168.0.239 with DHCP disable. As a result, users are not able to telnet to switch's command line interface or access the Web user interface using 169.254.100.100 or IP address from the DHCP server.
Method 1
Attempt to access the switch using IP address 192.168.0.239. Make sure your computer is set up with an IP address in the same subnet, for example, 192.168.0.100. On some newer switches, it goes this IP address in the abscence of a DHCP server, instead of a APIPA 169.254.x.x address. Try Telnet or HTTP to access the switch at this address, and if not continue on to method 2.
Method 2
Reset the switch to factory default using the console port. First, access the switch's user interface using the console port, via this Guide
- At the user login prompt, enter admin. Hit Enter when prompted for password (no password is needed for initial configuration). At the next command prompt, type ena and press Enter.
- Confirm the switch's management IP address is 192.168.0.239 by using command "show network". Image
- At the next command prompt, type clear config and press Enter. Answer "y" to clear the configuration.
- Log in to the switch again using the user name admin, and then press Enter. At the password prompt, press Enter again. At the next command prompt, type enable and press Enter.
- At the next command prompt, type save and press Enter.
- To check the switch has been reset to factory default, type show network and press Enter. Verify that:
- IP address = 169.254.100.100
- Subnet mask = 255.255.0.0
- Default gateway = 0.0.0.0
- Configured IPv4 Protocol = DHCP
- Configured IPv6 protocol = None
Method 3
Reconfigure the switch with EZConfig utility using the console port.
- First, Guide
- Login with user name "admin" and hit Enter (no password is needed for initial configuration) when prompt for password.
- At the next prompt, type "ezconfig" and press Enter.
- The EZConfig utility is now running in the switch. Follow the on screen questions to initialize the switch.