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Cisco Catalyst Switch Module 3110 and 3012 for IBM BladeCenter Software Configuration Guide
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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
• Configuring DHCP-Based Autoconfiguration, page 3-5
• Understanding DHCP-based Autoconfiguration and Image Update, page 3-10
• Configuring the DHCP Auto Configuration and Image Update Features, page 3-11
• Manually Assigning IP Information, page 3-14
Default Switch Information
Table 3-1 shows the default switch information.
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.
Table 3-1 Default Switch Information
Feature Default Setting
DCHP client Disabled.
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.
