Configuring Dhcp-Based Autoconfiguration - Cisco Catalyst 4500 Series Configuration Manual

Configuring DHCP-Based Autoconfiguration

Table 3-1
Feature
Administrative connection
Global switch information
System clock
Passwords
Switch prompt
Interfaces
Configuring DHCP-Based Autoconfiguration
These sections describe how to configure DHCP-based autoconfiguration:
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If your DHCP server is a Cisco device, or if you are configuring the switch as a DHCP server, refer to
the "IP Addressing and Services" section in the Cisco IOS IP and IP Routing Configuration Guide for
Cisco IOS Release 12.1 for additional information about configuring DHCP.
About DHCP-Based Autoconfiguration
Starting with Release 12.2(20)EW, you can enable DHCP AutoConfiguration by entering the write erase
Note
command. This command clears the startup-config in NVRAM. In images prior to Release 12.2(20)EW,
this command does not enable autoconfiguration.
DHCP provides configuration information to Internet hosts and internetworking devices. This protocol
consists of two components: one component for delivering configuration parameters from a DHCP
server to a device and another component that is 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.
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
3-2
Default Switch Configuration
About DHCP-Based Autoconfiguration, page 3-2
DHCP Client Request Process, page 3-3
Configuring the DHCP Server, page 3-4
Configuring the TFTP Server, page 3-4
Configuring the DNS Server, page 3-5
Configuring the Relay Device, page 3-5
Obtaining Configuration Files, page 3-6
Example Configuration, page 3-7
Chapter 3
Default Settings
Normal mode
No default value for system name, system contact, and location
No value for system clock time
No passwords are configured for normal mode or enable mode
(press the Return key)
Switch>
Enabled, with speed and flow control autonegotiated, and without
IP addresses
Configuring the Switch for the First Time
OL-25340-01