Bedienungsanleitung Sitecom WL-161 (Seite 47 von 49) (Englisch)

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Glossary

Default Gateway (Router): Every non-router IP device needs to configure a default gateway’s IP

address. When the device sends out an IP packet, if the destination is not on the same network,

the device has to send the packet to its default gateway, which will then send it out towards the

destination.

DHCP: Dynamic Host Configuration Protocol. This protocol automatically gives every computer

on your home network an IP address.

DNS Server IP Address: DNS stands for Domain Name System, which allows Internet servers to

have a domain name (such as www.Broadbandrouter.com) and one or more IP addresses (such

as 192.34.45.8). A DNS server keeps a database of Internet servers and their respective domain

names and IP addresses, so that when a domain name is requested (as in typing

"Broadbandrouter.com" into your Internet browser), the user is sent to the proper IP address. The

DNS server IP address used by the computers on your home network is the location of the DNS

server your ISP has assigned to you.

DSL Modem: DSL stands for Digital Subscriber Line. A DSL modem uses your existing phone

lines to transmit data at high speeds.

Ethernet: A standard for computer networks. Ethernet networks are connected by special cables

and hubs, and move data around at up to 10/100 million bits per second (Mbps).

Idle Timeout: Idle Timeout is designed so that after there is no traffic to the Internet for a pre-

configured amount of time, the connection will automatically be disconnected.

IP Address and Network (Subnet) Mask: IP stands for Internet Protocol. An IP address consists

of a series of four numbers separated by periods, that identifies a single, unique Internet

computer host in an IP network. Example: 192.168.2.1. It consists of 2 portions: the IP network

address, and the host identifier.

The IP address is a 32-bit binary pattern, which can be represented as four cascaded decimal

numbers separated by “.”: aaa.aaa.aaa.aaa, where each “aaa” can be anything from 000 to 255,

or as four cascaded binary numbers separated by “.”: bbbbbbbb.bbbbbbbb.bbbbbbbb.bbbbbbbb,

where each “b” can either be 0 or 1.

A network mask is also a 32-bit binary pattern, and consists of consecutive leading

1’s followed by consecutive trailing 0’s, such as

11111111.11111111.11111111.00000000. Therefore sometimes a network mask can also be

described simply as “x” number of leading 1’s.

When both are represented side by side in their binary forms, all bits in the IP address that

correspond to 1’s in the network mask become part of the IP network address, and the remaining

bits correspond to the host ID.

For example, if the IP address for a device is, in its binary form,

11011001.10110000.10010000.00000111, and if its network mask is,

11111111.11111111.11110000.00000000

It means the device’s network address is

11011001.10110000.10010000.00000000, and its host ID is,

00000000.00000000.00000000.00000111. This is a convenient and efficient method for routers

to route IP packets to their destination.

ISP Gateway Address: (see ISP for definition). The ISP Gateway Address is an IP address for

the Internet router located at the ISP's office.

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