Lancom Systems LCOS 3.50 - Manual (Page 272)

LANCOM Reference Manual LCOS 3.50 ̈ Chapter 13: Server services for the LAN
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13 Server services for the LAN
An LANCOM offers a number of services for the PCs in the LAN. These are cen-
tral functions that can be used by workstation computers. They are in partic-
ular:
̈ Automatic address administration with DHCP
̈ Name management of computers and networks with DNS
̈ Logging of network traffic with SYSLOG
̈ Recording of charges
̈ Office communications functions with LANCAPI
̈ Time server
13.1 Automatic IP address administration with DHCP
In order to operate smoothly in a TCP/IP network, all the devices in a local net-
work must have unique IP addresses.
They also need the addresses of DNS-servers and NBNS-servers as well as that
of a default gateway through which the data packets are to be routed from
addresses that are not available locally.
In a smaller network, it is still conceivable that these addresses could be
entered manually in all the computers in the network. In a larger network with
many workstation computers, however, this would simply be too enormous of
a task.
In such situations, the DHCP (Dynamic Host Configuration Protocol) is the
ideal solution. Using this protocol, a DHCP server in a TCP/IP-based LAN can
dynamically assign the necessary addresses to the individual stations.
13.1.1 The DHCP server
As a DHCP server, the LANCOM can administer the IP addresses in its TCP/IP
network. In doing so, it passes the following parameters to the workstation
computers:
̈ IP-address
̈ network mask
̈ broadcast address
̈ standard gateway
̈ DNS server
̈ NBNS server