Configuring Dns; Understanding How Dns Works - Cisco WS-C6506 Software Manual

Catalyst 6500 series switch

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Configuring DNS

This chapter describes how to configure the Domain Name System (DNS) on the Catalyst 6500 series

For complete syntax and usage information for the commands that are used in this chapter, refer to the

Catalyst 6500 Series Switch Command Reference publication.

This chapter consists of these sections:

DNS is a distributed database with which you can map the host names to the IP addresses through the

DNS protocol from a DNS server. When you configure DNS on the switch, you can substitute the host

name for the IP address with all IP commands, such as ping, telnet, upload, and download.

To use DNS, you must have a DNS name server on your network.

You can specify a primary DNS name server on the switch and two backup servers. The first server that

is specified is the primary server unless you explicitly identify the primary server. The switch sends the

DNS queries to the primary server first. If the query to the primary server fails, the backup servers are

Understanding How DNS Works, page 30-1

DNS Default Configuration, page 30-2

Configuring DNS on the Switch, page 30-2

C H A P T E R

Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7

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Catalyst 6506 Catalyst 6509 Catalyst 6513