LAN SERVICES E-SERVER : INTERNET APPLICATIONS
Ed. 044/8 Réf. 3EH 21000 BSAA
DNS SERVER
With its integrated DNS server, OmniPCX provides you with DNS server functionality on the LAN. DNS
servers handle the correspondence between an IP address and the host name of a machine. DNS ser-
vers perform two main functions:
- DNS caching for the resolution of names external to the LAN. The cache is updated whenever a
DNS request is resolved by DNS servers other than OmniPCX. This means that if an identical re-
quest is received, it can be resolved directly by OmniPCX without calling on the DNS servers at the
ISP. The request is thus resolved faster, with a corresponding reduction in communications costs.
The OmniPCX DNS also has a negative cache for memorizing name resolution failures. The lifes-
pan of the information in the cache is kept short so that the user can make a new attempt at resol-
ving these names;
- resolution of local host names with a fixed IP address on the LAN. These names are resolved on
condition that the elements have been entered in OmniPCX.
Resolving DNS requests from client stations involves several stages (see diagram):
To Next Page
Loading...
Need help?
General