USRobotics Instant802 APSDK - Manual (Page 313)

Professional Access Point
Administrator Guide
Glossary - 313
LAN
A Local Area Network (LAN) is a communications network covering a limited area, for example, the
computers in your home that you want to network together or a couple of floors in a building. A LAN
connects multiple computers and other network devices such as storage and printers.
Ethernet is the most
common technology implementing a LAN.
Wireless Ethernet ( 802.11 ) is another very popular LAN technology (also see WLAN ).
LDAP
The Lightweight Directory Access Protocol (LDAP) is a protocol for accessing on-line directory services. It
is used to provide an authentication mechanism. It is based on the X.500 standard, but less complex.
Lease Time
The Lease Time specifies the period of time the DHCP Server gives its clients an IP Address and other
required information. When the lease expires, the client must request a new lease. If the lease is set to a
short span, you can update your network information and propagate the information provided to the clients
in a timely manner.
LLC
The Logical Link Control (LLC) layer controls frame synchronization, flow control, and error checking. It is a
higher level protocol over the
PHY layer, working in conjunction with the MAC layer.
M
MAC
The Media Access Control (MAC) layer handles moving data packets between NIC s across a shared
channel. It is a higher level protocol over the PHY layer. It provides an arbitration mechanism in an attempt
to prevent signals from colliding.
It uses a hardware address, known as the MAC address, that uniquely identifies each node of a network.
IEEE 802 network devices share a common 48-bit MAC address format, displayed as a string of twelve
(12) hexadecimal digits separated by colons, for example FE:DC:BA:09:87:65.
MIB
Management Information Base (MIB) is a database of objects used for network management. SNMP
agents along with other SNMP tools can be used to monitor any network device defined in the MIB.
MSCHAP V2
Microsoft Challenge Handshake Authentication Protocol Version 2 (MSCHAP V2) provides authentication
for
PPP connections between a Windows-based computer and an Access Point or other network access
device.
MTU
The Maximum Transmission Unit is the largest physical packet size, measured in bytes, that a network can