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Cajun P550/P880 ATM Uplink User Guide, Version 1.1
LAN Emulation
Client (LEC)
Allows communication from endstations directly to the device to
participate in LANE with ATM-connected devices.
LAN Emulation
Configuration
Server (LECS)
Gives a LEC its configuration parameters at the beginning of LANE
participation. Also provides predefined values for all configuration
parameters.
LAN Emulation
Server (LES)
Registers (learns) LANE-connected endstations. Also resolves MAC
addresses to ATM addresses.
LAN Emulation
Network-to-
Network Interface
(LNNI)
Enables one vendor’s implementation of LAN emulation to work
with another’s. This specification is essential for building
multivendor ATM networks and is currently under development a
the ATM Forum.
LAN Emulation
User Network
Interface (LUNI)
Defines how legacy LAN applications and protocols work with ATM.
Currently in development at the ATM Forum, LUNI adapts layer 2
LAN packets to AAL 5 PDUs, which can then be divided into cells.
LUNI uses a client-server architecture to resolve LAN-to-ATM
addresses. A LAN Emulation Client (LEC) resides in each ATM-
attached device; a LAN Emulation Server (LES) and Broadcast and
Unknown Server (BUS) reside anywhere on the ATM network.
Link A point-to-point duplex cable connection between two ATM cell
switch ports. A link’s ATM switch port is specified by its Cajun
system’s IP host name and port number.
Link Control
Protocol (LCP)
Establishes, configures, and tests the data-link connection.
Local Service
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Protocol (LSAP)
The local protocol for publicizing the current network address of
available services.
Maximum Burst
Size (MBS)
A traffic parameter that specifies the maximum number of cells that
can be transmitted at ATM’s Peak Cell Rate (PCR). Maximum burst
size is a key measurement in capacity planning and network
management.
Medium Access
Control (MAC)
A sublayer of the data link layer, as defined by the IEEE 802
committee, which defines frame format and media access
procedures for a particular type of LAN.
Management
Information Base
(MIB)
A database of information on managed objects in the Cajun syste
unit that can be accessed via the SNMP network management
protocol.