Lancom Systems LCOS 3.50 13.2 DNS

 Chapter 13: Server services for the LAN LANCOM Reference Manual LCOS 3.50

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Server services for the LAN

Checking of IP addresses in the LAN

The DHCP table provides a list of the IP addresses in the LAN. This table con-

tains the assigned or used IP address, the MAC address, the validity, the name

of the computer (if available) and the type of address assignment.

The 'Type' field specifies how the address was assigned. This field can assume

the following values:

'new'

The computer has made its initial request. The DHCP server verifies the

uniqueness of the address that is to be assigned to the computer.

'unknown'

While verifying uniqueness, it was determined that the address has

already been assigned to another computer. Unfortunately, the DHCP

server has no means of obtaining additional information on this compu-

ter.

'static'

A computer has informed the DHCP server that it has a fixed IP address.

This address can no longer be used.

'dynamic'

The DHCP server assigned the computer an address.

13.2 DNS

The domain name service (DNS) is responsible in TCP/IP networks for associ-

ating computer names and/or network (domains) and IP addresses. This serv-

ice is required for Internet communications, to return the correct IP address

for a request such as 'www.lancom.de' for example. However, it's also useful

to be able to clearly associate IP addresses to computer names within a local

network or in a LAN interconnection.

The names used in DNS server requests are made up of several parts: one part

consists of the actual name of the host or service to be addressed; another

Configuration tool Run/Table

WEBconfig Expert Configuration Setu p / DHCP-module

Table- D HC P

Termin al/Tel net

setup/DHCP-module/table-DHCP