Troubleshooting

DNS Resolver

c.The domain name for an accessible domain in which there are hosts you want to reach with a DNS-compatible command. (This is the domain suffix in the fully qualified domain name for a given host operating in the selected domain. Refer to “Terminology” on page C- 79.) 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 steps 1a through 1c 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 three 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.

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Syntax: [no] ip dns server-address priority < 1 - 2 > < ip-addr> [oobm]

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

•optionally, for switches that have a separate out-of-band-management (OOBM) port, that DNS access goes through that out-of-band management port

These settings must be configured before a DNS-compatible command can be executed with host name criteria.

The switch supports three 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)

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