Default Switch Information; Understanding Dhcp-Based Autoconfiguration - Cisco Catalyst 3120 Software Manual

Chapter 3 Assigning the Switch IP Address and Default Gateway
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:
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Default Switch Information

Table 3-1
Table 3-1
Feature
DCHP client
IP address and subnet mask
Default gateway
Enable secret password
Hostname
Telnet password

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.
OL-12247-01
Default Switch Information, page 3-3
Understanding DHCP-Based Autoconfiguration, page 3-3
Manually Assigning IP Information, page 3-10
shows the default switch information.
Default Switch Information
Default Setting
Disabled.
No IP address or subnet mask are defined.
No default gateway is defined.
No password is defined.
The factory-assigned default hostname is Switch.
No password is defined.
Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
Assigning Switch Information
3-3