Appendix B. Glossary - Black Box 11N 2T2R Manual

11N 2T2R Wireless Access Point

Appendix B. Glossary

Default Gateway (Access point): Every non-access point 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 gate-
way, 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.Broadbandaccess point.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
"Broadbandaccesspoint.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 on the Internet for a pre-configured amount of time, the
connection will automatically disconnect.
IP Address and Network (Subnet) Mask: IP stands for Internet Protocol. An IP address consists of a series of four numbers separat-
ed by periods that identifies a single, unique Internet computer host in an IP network. Example: 192.168.2.1. It consists of 2 por-
tions: 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 access points 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 access point located at the
ISP's office.
ISP: Internet Service Provider. An ISP is a business that provides connectivity to the Internet for individuals and other businesses or
organizations.
LAN: Local Area Network. A LAN is a group of computers and devices connected together in a relatively small area (such as a
house or an office). Your home network is considered a LAN.
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