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If you lose your management connection, use a console connection and
enter “show ip interface” to determine the new switch address.
CLI – Specify the management interface, and set the IP Address Mode to
DHCP or BOOTP.
Renewing DCHP – DHCP may lease addresses to clients indefinitely or
for a specific period of time. If the address expires or the switch is moved
to another network segment, you will lose management access to the
switch. In this case, you can reboot the switch or submit a client request to
restart DHCP service.
Web – If the address assigned by DHCP is no longer functioning, you will
not be able to renew the IP settings via the Web interface. You can only
restart DHCP service via the Web interface if the current address is still
available.
CLI – Enter the following command to restart DHCP service.
Security
Configuring the Logon Password
The guest only has read access for most configuration parameters.
However, the administrator has write access for parameters governing the
onboard agent. You should therefore assign a new administrator password
Console(config)#interface vlan 1 3-85
Console(config-if)#ip address dhcp 3-67
Console(config-if)#end
Console#ip dhcp restart 3-69
Console#show ip interface 3-70
IP address and netmask: 10.1.0.54 255.255.255.0 on VLAN 1,
and address mode: User specified.
Console#
Console#ip dhcp restart 3-69