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Link state algorithm A routing algorithm such as OSPF which takes into account
lowest delay when choosing a route: link speed and congestion as well as hop count.
LLC (Logical Link Control) A data link protocol based or HDLC, developed for LANs
by the IEEE 802 Committee and consequently common to all LAN standards for
Data Link OSI Layer Two transmission.
Local bridge A bridge that links two local LANs: in the same building, for example.
Local security A security method available for 386 and 486 servers running
HPFS386. This method extends LAN Manager security measures to protect the files
on a server by restricting access of the users working at the server. With local security,
a user must be assigned permissions to access any file or directory in an HPFS386
partition, whether or not the resource is shared as part of a LAN Manager resource.
LocalTalk An Apple cabling scheme underlying its low-cost LANs. A 230Kbit/s
baseband network primarily for Mac computers and LaserWriter printers, it uses the
CSMA/CA media access method. The current Phase II allows theoretically unlimited
networks.
Lobe The cable between a Token Ring station and the Trunk Coupling Unit to which
it is connected. Lobe length comprises a patch cable from the TCU to the main
wiring panel, the length of the main wiring to the user station’s location, then a patch
cable from a floor/desk socket to the station.
Logon script A batch program containing LAN Manager, NetWare and other
operating system commands used to configure workstations. Logon scripts can be
written for one or more users.
Logon server For a domain, a logon server is the primary domain controller and the
backup domain controllers. For a user, the server that processes the user’s logon
request.
Lossless Image and data compression applications and algorithms, such as JBIG,
that reduce the number of bits a picture would normally take up without loosing any
data.