Chapter 16: 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 t o other na me
servers on the network. When a clie nt device de signate s 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 waitin g 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 addres s translati on.

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 incomple te h ost nam es r eceiv ed fr om a DNS c lien t
(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 do main list ,
the system will search it for a corresponding entry. If none is found, the default
domain name is used.
• When an incomplete hos t na me is received by the DNS service on this swi tch and
a domain name list has been specified, the switch will work through the domain list,
appending each domain n ame in the list to the hos t na me, a nd c hec king w ith the
specified name servers for a match.
• When more than one name server is specified, the servers are qu eried in the
specified sequence until a response is received, or t he end of th e lis t is reac hed
with no response.
• Note that if all name servers are deleted, DNS will automatically be disabled.
Command Attributes
• Doma in Lookup Statu s – Enables DN S host nam e-to-addre ss trans latio n.
• Default Domain N ame18 – Defines the default domain name appended to
incomplete host names. (Range: 1-127 alphanumeric characters)
• Domain Name List18 – Defines a list of doma in names th at can be ap pended to
incomplete host names. (Range: 1-127 alphanumeric characters; 1-3 name s)
• Name Server List – Specifies the add ress of on e or more domain name serv ers
to use for name-to-address resolution. (Range: 1-6 IP addresses)
Note:
When specifying names, do not include the initial dot that separates the host name
from the domain name.
18. Do not include the initial dot that separates the host name from the domain name.

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