BinTec X4000, Руководство пользователя

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X4000 User’s Guide 249
Basic IP Settings
8
Monitor function Which IP addresses are requested by hosts in the LAN and how often?
The Setup Tool permits rapid access to this and other statistical information.
You can also use the
nslookup
command in the command line (SNMP shell)
to check how a name or an IP address is resolved by X4000 or another name
server (see chapter 14.1, page 412 ). To obtain help information for the
command, enter
nslookup -?
.
Other Options
Global name server In
IP
➧
S
TATIC
S
ETTINGS
, you can also enter the IP address of preferred global
name servers that are to be asked if X4000 cannot answer requests itself or with
forwarding entries.
For local applications, the IP address of X4000 or the loopback address
(127.0.0.1) can be entered as global name server.
If necessary, X4000 can send or receive the addresses of name servers to and
from WAN partners:
Default interface In Default Interface, you can also select a WAN partner to whom a connection
is set up as standard for name server negotiation if name resolution was not
successful using the methods already stated.
Exchanging DNS Addresses with LAN Partners
DHCP If X4000 is configured as DHCP server, DHCP clients in the LAN can be sent
IP addresses from name servers. In this case, the addresses of the global name
servers entered in X4000 can be sent or the address of X4000 itself. In the latter
case, DNS requests from the DHCP clients are sent to X4000 , which either
answers these itself or passes them on if necessary (proxy function).
Exchanging DNS Addresses with WAN Partners
Make sure your static entries are always up to date. Names or IP addresses
can change at any time!