Cisco Systems 3750E manual Default Switch Information, Understanding DHCP-Based Autoconfiguration

Chapter 3 Assigning the Switch IP Address and Default Gateway

Assigning Switch Information

Note Stack members retain their IP address when you remove them from a switch stack. To avoid a conflict by having two devices with the same IP address in your network, change the IP address of the switch that you removed from the switch stack.

Use a DHCP server for centralized control and automatic assignment of IP information after the server is configured.

Note If you are using DHCP, do not respond to any of the questions in the setup program until the switch receives the dynamically assigned IP address and reads the configuration file.

If you are an experienced user familiar with the switch configuration steps, manually configure the switch. Otherwise, use the setup program described previously.

These sections contain this configuration information:

•Default Switch Information, page 3-3

•Understanding DHCP-Based Autoconfiguration, page 3-3

•Manually Assigning IP Information, page 3-10

Default Switch Information

Table 3-1shows the default switch information.

Table 3-1	Default Switch Information
Feature		Default Setting
IP address and subnet mask		No IP address or subnet mask are defined.
Default gateway		No default gateway is defined.
Enable secret password		No password is defined.
Hostname		The factory-assigned default hostname is Switch.
Telnet password		No password is defined.
Cluster command switch functionality		Disabled.
Cluster name		No cluster name is defined.

Understanding DHCP-Based Autoconfiguration

DHCP provides configuration information to Internet hosts and internetworking devices. This protocol consists of two components: one for delivering configuration parameters from a DHCP server to a device and a mechanism for allocating network addresses to devices. DHCP is built on a client-server model, in which designated DHCP servers allocate network addresses and deliver configuration parameters to dynamically configured devices. The switch can act as both a DHCP client and a DHCP server.

During DHCP-based autoconfiguration, your switch (DHCP client) is automatically configured at startup with IP address information and a configuration file.

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

OL-9775-02 3-3