operating in the selected domain. See Basic operation on page 383.) Note that if a domain suffix is not
configured, fully qualified domain names can be used to resolve DNS-compatible commands.
d. The host names assigned to target IP addresses in the DNS server for the specified domain.
2. Use the data from the first three bullets in step1 to configure the DNS entry on the switch.
3. Use a DNS-compatible command with the host name to reach the target devices.
Configuring a DNS entry
The switch allows up to two DNS server entries (IP addresses for DNS servers). One domain suffix can also be
configured to support resolution of DNS names in that domain by using a host name only. Including the domain
suffix enables the use of DNS-compatible commands with a target's host name instead of the target's fully
qualified domain name.
Syntax:
[no] ip dns server-address priority <1-3> <ip-addr>
Configures the access priority and IP address of a DNS server accessible to the switch. These settings specify:
• The relative priority of the DNS server when multiple servers are configured
• The IP address of the DNS server
These settings must be configured before a DNS-compatible command can be executed with host name criteria.
The switch supports two prioritized DNS server entries. Configuring another IP address for a priority that has
already been assigned to an IP address is not allowed.
To replace one IP address at a given priority level with another address having the same priority, you must first
use the no form of the command to remove the unwanted address. Also, only one instance of a given server
address is allowed in the server list. Attempting to enter a duplicate of an existing entry at a different priority level
is not allowed .
To change the priority of an existing server address, use the no form of the command to remove the entry, then
re-enter the address with the new priority.
The no form of the command replaces the configured IP address with the null setting. (Default: null)
Syntax:
[no] ip dns domain-name <domain-name-suffix>
This optional DNS command configures the domain suffix that is automatically appended to the host name
entered with a DNS-compatible command. When the domain suffix and the IP address for a DNS server that can
access that domain are both configured on the switch, you can execute a DNS-compatible command using only
the host name of the desired target. (For an Example:, see Example: of using either a host name or a fully
qualified domain name.) In either of the following two instances, you must manually provide the domain
identification by using a fully qualified DNS name with a DNS-compatible command:
• If the DNS server IP address is configured on the switch, but the domain suffix is not configured (null).
• The domain suffix configured on the switch is not the domain in which the target host exists.
The switch supports one domain suffix entry and three DNS server IP address entries. (See the preceding
command description.)
Chapter 16 Troubleshooting 385
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