Installation manual

2-5
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Note: The IP address for this switch is obtained via DHCP by default.
Before you can assign an IP address to the switch, you must obtain the following
information from your network administrator:
• IP address for the switch
• Default gateway for the network
• Network mask for this network
To assign an IP address to the switch, complete the following steps:
1. From the Privileged Exec level global configuration mode prompt, type “interface
vlan 1” to access the interface-configuration mode. Press <Enter>.
2. Type “ip address ip-address netmask,” where “ip-address” is the switch IP address
and “netmask” is the network mask for the network. Press <Enter>.
3. Type “exit” to return to the global configuration mode prompt. Press <Enter>.
4. To set the IP address of the default gateway for the network to which the switch
belongs, type “ip default-gateway gateway,” where “gateway” is the IP address of the
default gateway. Press <Enter>.
Dynamic Configuration
If you select the “bootp” or “dhcp” option, the system will immediately start broadcasting
service requests. IP will be enabled but will not function until a BOOTP or DHCP reply has
been received. Requests are broadcast every few minutes using exponential backoff until
IP configuration information is obtained from a BOOTP or DHCP server. (BOOTP and
DHCP values can include the IP address, subnet mask, and default gateway.)
Note that the “ip dhcp restart” command can also be used to start broadcasting service
requests to obtain address assignments through BOOTP or DHCP. It may be necessary
to use this command when DHCP is configured on a VLAN, and the member ports which
were previously shut down are now enabled.
If the “bootp” or “dhcp” option is saved to the startup-config file (step 6), then the switch
will start broadcasting service requests as soon as it is powered on.
To automatically configure the switch by communicating with BOOTP or DHCP address
allocation servers on the network, complete the following steps:
1. From the Global Configuration mode prompt, type “interface vlan 1” to access the
interface-configuration mode. Press <Enter>.
Console(config)#interface vlan 1
Console(config-if)#ip address 192.168.1.5 255.255.255.0
Console(config-if)#exit
Console(config)#ip default-gateway 192.168.1.254
Console(config)#