Manually Assigning And Removing Switch Ip Information; Using Dhcp-Based Autoconfiguration - Cisco Catalyst 2950 Software Manual

Changing IP Information

Manually Assigning and Removing Switch IP Information

You can manually assign an IP address, mask, and default gateway to the switch. The mask identifies the
bits that denote the network number in the IP address. When you use the mask to subnet a network, the
mask is then referred to as a subnet mask. The broadcast address is reserved for sending messages to all
hosts. The CPU sends traffic to an unknown IP address through the default gateway.
Beginning in privileged EXEC mode, follow these steps to enter the IP information:
Command
Step 1 configure terminal
Step 2 interface vlan 1
Step 3 ip address ip_address subnet_mask
Step 4
exit
Step 5
ip default-gateway ip_address
Step 6
end
Step 7 show running-config
Use this procedure to remove the IP information from a switch.
Using the no ip address command in configuration mode disables the IP stack as well as removes the
Note
IP information. Cluster members without IP addresses rely on the enabled IP stack.
Beginning in privileged EXEC mode, follow these steps to remove an IP address:
Command
Step 1
no ip address ip_address
subnet_mask
Step 2
end
Step 3
show running-config

Using DHCP-Based Autoconfiguration

The Dynamic Host Configuration Protocol (DHCP) provides configuration information to Internet hosts
and internetworking devices. With DHCP-based autoconfiguration, your switch (DHCP client) can be
automatically configured during bootup with IP address information and a configuration file that it
receives during DHCP-based autoconfiguration.
Catalyst 2950 Desktop Switch Software Configuration Guide
6-2
Purpose
Enter global configuration mode.
Enter interface configuration mode, and enter the VLAN to which the IP
information is assigned. VLAN 1 is the default management VLAN, but you
can configure any VLAN from 1 to 1001.
Enter the IP address and subnet mask.
Return to global configuration mode.
Enter the IP address of the default router.
Return to privileged EXEC mode.
Verify that you entered the information was entered correctly by displaying
the running configuration. If the information is incorrect, repeat the
procedure.
Purpose
Remove the IP address and subnet mask.
Return to privileged EXEC mode.
Verify that you entered the information was removed by displaying
the running configuration.
Chapter 6 Configuring the System
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