Cisco WS-C2960-24TC-S Software Guide - Page 121
Default System Name and Prompt Configuration, Configuring a System Name, Understanding DNS
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Chapter 6 Administering the Switch Configuring a System Name and Prompt These sections contain this configuration information: • Default System Name and Prompt Configuration, page 6-15 • Configuring a System Name, page 6-15 • Understanding DNS, page 6-15 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: Step 1 Step 2 Step 3 Step 4 Step 5 Command configure terminal hostname name end show running-config copy running-config startup-config Purpose Enter global configuration mode. Manually configure a system name. The default setting is switch. The name must follow the rules for ARPANET hostnames. 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. Return to privileged EXEC mode. Verify your entries. (Optional) Save your entries in the configuration file. 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 hostnames to IP addresses. When you configure DNS on your switch, you can substitute the hostname 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, Cisco Systems is a commercial organization that IP identifies by a com domain name, so its domain name is cisco.com. A specific device in this domain, for example, the File Transfer Protocol (FTP) system is identified as ftp.cisco.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 hostnames, specify the name server that is present on your network, and enable the DNS. OL-8603-04 Catalyst 2960 Switch Software Configuration Guide 6-15
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