Accton Technology ES4548D, ES4524D, 24/48-Port manual Configuring Domain Name Service

Chapter 29: Configuring Domain Name Service

The Domain Naming System (DNS) service on this switch allows host names to be mapped to IP addresses using static table entries or by redirection to other name servers on the network. When a client device designates this switch as a DNS server, the client will attempt to resolve host names into IP addresses by forwarding DNS queries to the switch, and waiting for a response.

You can manually configure entries in the DNS table used for mapping domain names to IP addresses, configure default domain names, or specify one or more name servers to use for domain name to address translation.

Configuring General DNS Service Parameters

Command Usage

•To enable DNS service on this switch, first configure one or more name servers, and then enable domain lookup status.

•To append domain names to incomplete host names received from a DNS client (i.e., not formatted with dotted notation), you can specify a default domain name or a list of domain names to be tried in sequential order.

•If there is no domain list, the default domain name is used. If there is a domain list, the default domain name is not used.

•When an incomplete host name is received by the DNS service on this switch and a domain name list has been specified, the switch will work through the domain list, appending each domain name in the list to the host name, and checking with the specified name servers for a match.

•When more than one name server is specified, the servers are queried in the specified sequence until a response is received, or the end of the list is reached with no response.

•Note that if all name servers are deleted, DNS will automatically be disabled.

Command Attributes

•Domain Lookup Status – Enables DNS host name-to-address translation.

•Default Domain Name1 – Defines the default domain name appended to incomplete host names. (Range: 1-64 alphanumeric characters)

•Domain Name List1 – Defines a list of domain names that can be appended to incomplete host names. (Range: 1-64 alphanumeric characters. 1-5 names)

•Name Server List – Specifies the address of one or more domain name servers to use for name-to-address resolution. (Range: 1-6 IP addresses)

1.Do not include the initial dot that separates the host name from the domain name.

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