C
HAPTER
2
| Initial Switch Configuration
Basic Configuration
– 45 –
DYNAMIC CONFIGURATION
OBTAINING AN IPV4 ADDRESS
If you enable the “IP DHCP” option, IP will be enabled but will not function
until a DHCP reply has been received. Requests will be sent periodically in
an effort to obtain IP configuration information. DHCP values can include
the IP address, subnet mask, and default gateway.
If the IP DHCP option is enabled, the switch will start broadcasting service
requests as soon as it is powered on.
To automatically configure the switch by communicating with DHCP
address allocation servers on the network, type the following command,
and press <Enter>. Wait a few minutes, and then check the IP
configuration settings using the “ip dhcp” command.
“ip dhcp enable”
>ip dhcp enable
>ip dhcp
DHCP Client : Enabled
Active Configuration:
IP Address : 192.168.0.3
IP Mask : 255.255.255.0
IP Router : 0.0.0.0
DNS Server : 0.0.0.0
SNTP Server :
>
N
OTE
:
Response time from DHCP servers vary considerably for different
network environments. If you do not get a response in a reasonable
amount of time, try entering the “dhcp disable” command followed by the
“dhcp enable” command. Otherwise, set the static IP address to a null
address (see page 43), and then enter the “dhcp enable” command or
reboot the switch.
OBTAINING AN IPV6 ADDRESS
To generate an IPv6 address that can be used in a network containing more
than one subnet, the switch can be configured to automatically generate a
unique host address based on the local subnet address prefix received in
router advertisement messages.
To dynamically generate an IPv6 host address for the switch, type the
following command, and press <Enter>.
“ip ipv6 autoconfig enable”
>ip ipv6 autoconfig enable
>ip ipv6 autoconfig
IPv6 AUTOCONFIG mode : Enabled
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