Aastra OpenCom 131 User Guide - Page 93

Introduction to TCP/IP, Network: LAN, IP Range, Common Netmask, Comment

Page 93 highlights

Configuration Examples Introduction to TCP/IP Server configuration in the LAN IP server present No DHCP server present OpenCom 100 Functions Special case when integrating the OpenCom 100 in a LAN; settings in the Network: LAN menu must be coordinated with the responsible system administrator 8.2 Introduction to TCP/IP In a single LAN it is possible to use various protocols for the transmission of data. The connection between a workstation computer and the OpenCom 100 runs via the IP protocol (also named TCP/IP) used on the Internet. IP can be used together with other protocols (e.g. NetBEUI, AppleTalk or IPX/SPX) on the same network. Every device participating in data transmission using IP requires a unique IP address. An IP address consists of four groups of digits from 0 to 255, each separated by a full stop. The supplementary protocols DHCP and PPP automatically assign IP addresses to devices. Class C networks normally use IP addresses in which the first three numbers are the same and the last number is uniquely assigned to a specific device in the LAN. On the Internet, unique addresses assigned by a special organisation created for this purpose are used. Within a LAN, you can use addresses which are not unique world-wide: IP Range 192.168.0.0192.168.255.255 172.16.0.0-172.31.255.255 10.0.0.0-10.255.255.255 Common Netmask 255.255.255.0 255.255.0.0 255.0.0.0 Comment 256 smaller networks 16 medium networks 1 large network IP enables the establishment of connections via one or more intermediate stations. The decision whether to connect directly or indirectly to the partner device depends on the network mask. The network mask for a class C network is 255.255.255.0. If the IP address of the partner device does not fit the network mask, the connection is established via the default gateway. If a device knows several data routes to different intermediate stations, one speaks of a router. The domain name system (DNS) resolves a plain text DNS name into an IP address. The DNS is a hierarchically structured database, distributed worldwide. A DNS 91

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Configuration Examples
Introduction to TCP/IP
91
8.2
Introduction to TCP/IP
In a single LAN it is possible to use various protocols for the transmission of data.
The connection between a workstation computer and the OpenCom 100 runs via
the IP protocol (also named TCP/IP) used on the Internet. IP can be used together
with other protocols (e.g. NetBEUI, AppleTalk or IPX/SPX) on the same network.
Every device participating in data transmission using IP requires a unique IP
address. An IP address consists of four groups of digits from 0 to 255, each sepa-
rated by a full stop. The supplementary protocols DHCP and PPP automatically
assign IP addresses to devices. Class C networks normally use IP addresses in
which the first three numbers are the same and the last number is uniquely
assigned to a specific device in the LAN. On the Internet, unique addresses
assigned by a special organisation created for this purpose are used. Within a LAN,
you can use addresses which are not unique world-wide:
IP enables the establishment of connections via one or more intermediate sta-
tions. The decision whether to connect directly or indirectly to the partner device
depends on the network mask. The network mask for a class C network is
255.255.255.0. If the IP address of the partner device does not fit the network
mask, the connection is established via the default gateway. If a device knows
several data routes to different intermediate stations, one speaks of a router.
The domain name system (DNS) resolves a plain text DNS name into an IP address.
The DNS is a hierarchically structured database, distributed worldwide. A DNS
IP server present
No DHCP server present
Special case when integrating the
OpenCom 100 in a LAN; settings in the
Network: LAN
menu must be coordi-
nated with the responsible system ad-
ministrator
IP Range
Common Netmask
Comment
192.168.0.0-
192.168.255.255
255.255.255.0
256 smaller networks
172.16.0.0-172.31.255.255
255.255.0.0
16 medium networks
10.0.0.0-10.255.255.255
255.0.0.0
1 large network
Server configuration in the LAN
OpenCom 100 Functions