User`s manual

144 Asanté IntraCore 36000 Series
Chapter 13: 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.
13.1 General DNS Server Parameters
Follow these guidelines.
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 (For example, 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 server on this switch and a domain name list has
been specified, the switch works 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: If all name servers are deleted, DNS is automatically disabled.
Command Attributes
Domain Lookup Status – Enables DNS host name-to-address translation.
Default Domain Name – Defines the default domain name appended to incomplete host names. Do not
include the initial dot that separates the host name from the domain name. (Range: 1-64 alphanumeric
characters)
Domain Name List – Defines define a list of domain names that can be appended to incomplete host names.
Do not include the initial dot that separates the host name from the domain name. (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)
Configuring the Switch Using the Web or CLI
Web
Select DNS – General Configuration. Set the default domain name or list of domain names, specify one or
more name servers to use to use for address resolution, enable domain lookup status, and click Apply.