D-Link DWL-2200AP [172/192] Gateway

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Glossary
Legacy IEEE 802.11b devices cannot detect the ERP-OFDM signals used by IEEE 802.11g
stations, and this can result in collisions between data frames from IEEE 802.11b and IEEE
802.11g stations.
If there is a mix of 802.11b and 802.11g nodes on the same channel, the IEEE 802.11g
stations detect this via an ERP flag on the access point and enable request to send (RTS)
and clear to send (CTS) protection before sending data.
See also CSMA/CA protocol.
Frame
A Frame consists of a discrete portion of data along with some descriptive meta-information
packaged for transmission on a wireless network. Each frame includes a source and
destination MAC address, a control field with protocol version, frame type, frame sequence
number, frame body (with the actual information to be transmitted) and frame check sequence
for error detection. A Frame is similar in concept to a Packet, the difference being that a packet
operates on the Network layer (layer 3 in the OSI model) whereas a frame operates on the
Data-Link layer (layer 2 in the OSI model).
Gateway
A gateway is a network node that serves as an entrance to another network. A gateway also
often provides a proxy server and a firewall. It is associated with both a router, which use
headers and forwarding tables to determine where packets are sent, and a switch or bridge,
which provides the actual path for the packet in and out of the gateway.
Before a host on a LAN can access the Internet, it needs to know the address of its default
gateway.
HTML
The Hypertext Markup Language (HTML) defines the structure of a document on the World
Wide Web. It uses tags and attributes to hint about a layout for the document.
An HTML document starts with an <html> tag and ends with a </html> tag. A properly
formatted document also contains a <head> ... </head> section, which contains the
metadata to define the document, and a <body> ... </body> section, which contains its
content. Its markup is derived from the Standard Generalized Markup Language (SGML),
which is defined in ISO 8879:1986.
HTML documents are sent from server to browser via HTTP. Also see XML.
HTTP
The Hypertext Transfer Protocol (HTTP) defines how messages are formatted and transmitted
on the World Wide Web. An HTTP message consists of a URL and a command (GET, HEAD,
POST, etc.), a request followed by a response.
IAPP
The Inter Access Point Protocol (IAPP) is an IEEE standard (802.11f) that defines
communication between the access points in a “distribution system”. This includes the
exchange of information about mobile stations and the maintenance of bridge forwarding
tables, plus securing the communications between access points.

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