Ericsson ECN330, User Manual

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Configuring the ECN330-switch
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1553-KDU 137 365 Uen D 2006-06-16
6.17 Configuring Domain Name Service
The Domain Naming System (DNS) service on the ECN330-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 the
ECN330-switch as a DNS server, the client will attempt to resolve host names
into IP addresses by forwarding DNS queries to the ECN330-switch, and waiting
for a response.
The DNS table allows entries to be manually configured for mapping domain
names to IP addresses, default domain names configured, and one or more
name servers specified for domain name to address translation.
6.17.1 Configuring General DNS Server Parameters
Command Usage
• To enable DNS service on the ECN330-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 (that is, not formatted with dotted notation), 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 the
ECN330-switch and a domain name list has been specified, the
ECN330-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.