Hirschmann BAT 11b, Management Manual

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Glossary
115
BAT 11b
Release 1.0 03/04
• Default Gateway
Designates the address of the router to which the complete traffic
is sent which is not intended to go over the proper network.
• DHCP
Dynamic Host Configuration Protocol: A protocol which performs
the IP configuration for individual computers in the network auto-
matically and centrally. If a networked computer is to be inte-
grated into the network or the Internet via the Internet protocol
(TCP/IP), it requires a number of basic settings which are essen-
tial for any communication. This process can be performed with-
out the interaction of a user via a DHCP server, since the DHCP
server knows the settings and forwards them to the clients. With-
out such a DHCP server, the user has to perform the settings man-
ually. Each time he changes the network, e.g. when he takes his
notebook from one location to another, he has to enter the set-
tings again. If a DHCP server is used, this process is automatically
performed each time.
• DNS
DNS means Domain Name System and administrates the alloca-
tion of IP addresses to domain names. DNS is used, for instance,
to allocate the corresponding IP address to the domain
www.hirschmann.com.
• DSSS
Direct Sequence Spread Spectrum is a radio technology which
was originally developed for the military sector and offers a high
resistance against interferences, as the payload signal is spread
over a wide sector. The signal is spread via a spread sequence or
a chipping code, which consists of 11 chips on a bandwidth of 22
MHz. If one or several chips are disturbed during the transmis-
sion, the information can be reliably regained form the rest of the
chips.
• Dynamic IP Address
In contrast to a static IP address, a dynamic IP address is tempo-
rarily assigned via DHCP. Network components, such as Web
servers or printers, usually have static IP addresses. Clients, such
as notebooks and workstations, normally receive dynamic IP
addresses.