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Bridge: A bridge is an intelligent, internetworking device that forwards or filters packets between different networks
b
ased on data link layer (MAC) address information.
Def t ds to configure a default gateway’s IP address. When the
ev e sends out an IP packet, if the destination is not on the same network, the device has to send the packet to its default
ateway, hich will then send it out towards the destination.
HCP: Dynamic Host Configuration Protocol. This protocol automatically gives every computer on your home network
n IP address.
NS Server IP Address: DNS stands for Domain Name System, which allows Internet servers to have a domain name
uch as www.Broadbandrouter.com) and one or more IP addresses (such as 192.34.45.8). A DNS server keeps a
atabase of Internet servers and their respective domain names and IP addresses, so that when a domain name is requested
s in typing "Broadbandrouter.com" into your Internet browser), the user is sent to the proper IP address. The DNS
erver IP address used by the computers on your home network is the location of the DNS server your ISP has assigned to
ou.
SL Modem: DSL stands for Digital Subscriber Line. A DSL modem uses your existing phone lines to transmit data at
igh speeds.
thernet: A standard for computer networks. Ethernet networks are connected by special cables and hubs, and move
data ts per second (Mbps).
Idle Timeout: Idle Timeout is designed so that if there is no traffic to the Internet for a pre-configured amount of time,
ill automatically be disconnected.
P Address and Network (Subnet) Mask: IP stands for Internet Protocol. An IP address consists of a series of four
umbers separated by periods, that identifies a single, unique Internet computer host in an IP network. Example:
92.168.2.1. It consists of 2 portions: the IP network address, and the host identifier.
he IP address is a 32-bit binary pattern, which can be represented as four cascaded decimal numbers separated by “.”:
aa.aaa.aaa.aaa, where each “aaa” can be anything from 000 to 255, or as four cascaded binary numbers separated by “.”:
bbbbbbb.bbbbbbbb.bbbbbbbb.bbbbbbbb, where each “b” can either be 0 or 1.
network mask is also a 32-bit binary pattern, and consists of consecutive leading
’s followed by consecutive trailing 0’s, such as
1111111.11111111.11111111.00000000. Therefore sometimes a network mask can also be described simply as “x”
umber of leading 1’s.
hen both are represented side by side in their binary forms, all bits in the IP address that correspond to 1’s in the
etwork mask become part of the IP network address, and the remaining bits correspond to the host ID.
or example, if the IP address for a device is, in its binary form,
1011001.10110000.1001
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ul Gateway (Router): Every non-router IP device nee
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around at up to 10/100/1000 million bi
the connection w
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0000.00000111, and if its network mask is,
1111111.11111111.11110000.00000000
means the device’s network address is
11011001.1 1
1
It
01 0000.1001
0000.00000000, and its host ID is,
00000000.0 000 0000.00000000.00000111
. This is a convenient and efficient method for routers to route IP packets to their
destination.
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