Funkwerk WI2040n Manual de usuario descargar pdf (Pagina 335)

For local applications, the IP address of your device or the general loopback address

(127.0.0.1) can be entered as the global name server.

Your device can also receive the global name servers dynamically and transfer them dy-

namically if necessary.

Strategy for name resolution on your device

A DNS request is handled by your device as follows:

(1) If possible, the request is answered directly from the static or dynamic cache with IP

address or negative response.

(2) Otherwise, if a suitable forwarding entry exists, the relevant DNS server is asked, de-

pending on the configuration of the Internet or dialin connections, if necessary by set-

ting up a WAN connection at extra cost. If the DNS server can resolve the name, the

information is forwarded and a dynamic entry created in the cache.

(3) Otherwise, if global name servers are entered, the primary DNS server then the sec-

ondary DNS server are asked. If the IP address of your device or the loopback ad-

dress is entered for local applications, these are ignored here. If one of the DNS serv-

ers can resolve the name, the information is forwarded and a dynamic entry created in

the cache.

(4) Otherwise, if a suitable Internet or dialin connection is selected as the standard inter-

face, the relevant DNS server is asked, depending on the configuration of the Internet

or dialin connections, if necessary by setting up a WAN connection at extra cost. If

one of the DNS servers can resolve the name, the information is forwarded and a dy-

namic entry created in the cache.

(5) Otherwise, if overwriting the addresses of the global name servers is allowed (DNS

Server Configuration = 9-), a connection is set up – in some cases at extra

cost – that is configured to enable DNS server addresses to be requested from DNS

servers (DNS Negotiation = 0#2), if this has not been attempted previously. If

name server negotiation is successful, these are entered as global name servers and

are therefore available for further requests.

(6) Otherwise the initial request is answered with a server error.

If one of the DNS servers answers with " *, the initial request is im-

mediately answered accordingly and a corresponding negative entry is made in the DNS

cache of your device.

Funkwerk Enterprise Communications GmbH

18 Local Services

bintec WLAN and Industrial WLAN 323

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Funkwerk WI2040n Manual de usuario Pagina 335