H3C Technologies H3C S10500 Series Switches - Manual (Page 94)

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Configuring dynamic domain name resolution
To send DNS queries to a correct server for resolution, dynamic domain name resolution needs to be
enabled and a DNS server needs to be configured.
In addition, you can configure a DNS suffix that the system will automatically add to the provided
domain name for resolution.
Follow these steps to configure dynamic domain name resolution:
To do… Use the command… Remarks
Enter system view system-view —
Enable dynamic domain name
resolution
dns resolve
Required
Disabled by default.
System view dns server ip-address
interface interface-type
interface-number
dns server ip-address
Specify a DNS
server
Interface view
quit
Required
Not specified by default.
Configure a DNS suffix dns domain domain-name
Optional
Not configured by default. Only
the provided domain name is
resolved.
NOTE:
•
You can configure up to six DNS servers, including those with IPv6 addresses, in system view, and up to
six DNS servers on all interfaces of a device.
• A DNS server configured in system view has a higher priority than one configured in interface view. A
DNS server configured earlier has a higher priority than one configured later in the same view. A DNS
server manually configured has a higher priority than one dynamically obtained through DHCP. A
name query request is first sent to the DNS server that has the highest priority. If no reply is received, it
is sent to the DNS server that has the second highest priority, and thus in turn.
• You can specify up to ten DNS suffixes.
Displaying and maintaining IPv4 DNS
To do… Use the command… Remarks
Display the static IPv4 domain
name resolution table
display ip host [ | { begin |
exclude | include }
regular-expression ]
Available in any view
Display IPv4 DNS server
information
display dns server [ dynamic ] [ |
{ begin | exclude | include }
regular-expression ]
Available in any view
Display DNS suffixes
display dns domain [ dynamic ] [ |
{ begin | exclude | include }
regular-expression ]
Available in any view