dns enable
Enables a DNS server. Forwards name resolution requests to a DNS name server, then stores the address information locally in the SteelHead. By default, the requests go to the root name servers, unless you specify another name server.
Syntax
[no] dns enable
Parameters
None
Usage
A DNS name server resolves hostnames to IP addresses and stores them locally in a single SteelHead. Any time your browser requests a URL, it first looks in the local cache to see if it is there before querying the external name server. If it finds the resolved URL locally, it uses that IP. Hosting the DNS name server function provides:
• Improved performance for web applications by saving the round trips previously needed to resolve names. Whenever the name server receives address information for another host or domain, it stores that information for a specified period of time. That way, if it receives another name resolution request for that host or domain, the name server has the address information ready, and does not need to send another request across the WAN.
• Improved performance for services by saving round trips previously required for updates.
• Continuous DNS service locally when the WAN is disconnected, with no local administration needed, eliminating the need for DNS servers at branch offices.
The no command option disables a DNS server.
Example
amnesiac (config) # dns enable
Product
SteelHead CX, SteelHead EX, SteelHead-v, SteelHead-c
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