compression. PPP is used over many types of physical networks
including serial cable, phone line, cellular telephone, specialized radio
links, and fiber optic links. After the link has been established, additional
network (layer 3) configuration may take place. Most commonly, the
Internet Protocol Control Protocol
(IPCP) is used.
Preamble
it is the first part of the Physical Layer Convergence Protocol/Procedure
(PLCP) Protocol Data Unit (PDU). A header is the remaining part of the
data packets and has more information identifying the modulation
scheme, transmission rate, and length of time to transmit the whole
data frame.
The Preamble type in IEEE 802.11 based wireless communication
defines the length of the CRC (Cyclic Redundancy Check) block for
communication between the Access Point and roaming wireless
adapters.
Long preamble:
• PLCP with long preamble is transmitted at 1 Mbps regardless of
transmit rate of data frames
• Total long preamble transfer time is a constant at 192 usec
• Compatible with legacy IEEE 802.11 systems running at 1 and 2 Mbps
Short preamble:
• Preamble is transmitted at 1 Mbps and header at 2 Mbps
• Total short preamble transfer time is a constant at 96 usec
• Not compatible with legacy IEEE 802.11 systems operating at 1 and
2 Mbps
Protocol Field Compression
is a method to negotiate the compression of the
Protocol field. By
default, all implementations MUST transmit packets with two octet PPP
Protocol fields.
Service Set Identifier
is a sequence of characters that uniquely names a wireless local area
network (WLAN). An SSID is sometimes referred to as a "network name".
This name allows stations to connect to the desired network when
multiple independent networks operate in the same physical area.
Shared key
is a mode by which a computer can gain access to a wireless network
that uses the Wired Equivalent Privacy protocol. With Shared Key, a
computer equipped with a wireless modem can fully access any WEP
network and exchange encrypted or unencrypted data.
Simple Network
Management Protocol
is an Internet-standard protocol for collecting and organizing
information about managed devices on IP networks and for modifying
that information to change device behavior. Devices that typically
support SNMP include routers, switches, servers, workstations, printers,
modem racks and more.
Command Reference Guide — Keenetic Lite (KN-1310)
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Glossary
Summary of Contents for Lite KN-1310
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