Filter
Top Products
7-15
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 7 Administering the Switch
Configuring a System Name and Prompt
• Configuring a System Name, page 7-15
• Understanding DNS, page 7-15
Default System Name and Prompt Configuration
The default switch system name and prompt is Switch.
Configuring a System Name
Beginning in privileged EXEC mode, follow these steps to manually configure a system name:
When you set the system name, it is also used as the system prompt.
To return to the default hostname, use the no hostname global configuration command.
Understanding DNS
The DNS protocol controls the Domain Name System (DNS), a distributed database with which you can
map host names to IP addresses. When you configure DNS on your switch, you can substitute the host
name for the IP address with all IP commands, such as ping, telnet, connect, and related Telnet support
operations.
IP defines a hierarchical naming scheme that allows a device to be identified by its location or domain.
Domain names are pieced together with periods (.) as the delimiting characters. For example, is a
commercial organization that IP identifies by a com domain name, so its domain name is .com. A specific
device in this domain, for example, the File Transfer Protocol (FTP) system is identified as ftp..com.
To keep track of domain names, IP has defined the concept of a domain name server, which holds a cache
(or database) of names mapped to IP addresses. To map domain names to IP addresses, you must first
identify the host names, specify the name server that is present on your network, and enable the DNS.
This section contains this configuration information:
• Default DNS Configuration, page 7-16
• Setting Up DNS, page 7-16
• Displaying the DNS Configuration, page 7-17
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
hostname name Manually configure a system name.
The default setting is switch.
The name must follow the rules for ARPANET host names. They must start
with a letter, end with a letter or digit, and have as interior characters only
letters, digits, and hyphens. Names can be up to 63 characters.
Step 3
end Return to privileged EXEC mode.
Step 4
show running-config Verify your entries.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.