## Enabling DNS

DNS offers services to map a host name to an IP address in the network through 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.

If you use DNS, the following requirements apply:

• All switches should be configured using DNS.

• The domain name (or the domain list), and the IP name server must be configured to reach remote switches.

• The DNS server should be configured on the same server where DCNM-SAN is installed.

If you use IP addresses, the DNS should not be configured on any switch in the fabric and the use_ip flag in the smeserver.properties must be set to TRUE.

For information on configuring DNS, refer to the IP Services Configuration Guide, Cisco DCNM for SAN and the Cisco MDS 9000 Family NX-OS IP Services Configuration Guide.