Extreme Networks Summit WM20 User Manual page 224

Glossary
I (Continued)
isochronous
ISP
IV
L
LAN
License installation
LSA
M
MAC
MAC address
MIB
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Isochronous data is data (such as voice or video) that requires a
constant transmission rate, where data must be delivered within
certain time constraints. For example, multimedia streams require an
isochronous transport mechanism to ensure that data is delivered as
fast as it is displayed and to ensure that the audio is synchronized
with the video. Compare: asynchronous processes in which data
streams can be broken by random intervals, and synchronous
processes, in which data streams can be delivered only at specific
intervals.
Internet Service Provider.
IV (Initialization Vector), part of the standard WEP encryption
mechanism that concatenates a shared secret key with a randomly
generated 24-bit initialization vector. WPA with TKIP uses 48-bit IVs,
an enhancement that significantly increases the difficulty in cracking
the encryption. (See WPA and TKIP)
Local Area Network.
Link State Advertisements received by the currently running OSPF
process. The LSAs describe the local state of a router or network,
including the state of the router's interfaces and adjacencies. See also
OSPF.
Media Access Control layer. One of two sublayers that make up the
Data Link Layer of the OSI model. The MAC layer is responsible for
moving data packets to and from one Network Interface Card (NIC) to
another across a shared channel.
Media Access Control address. A hardware address that uniquely
identifies each node of a network.
Management Information Base is a formal description of a set of
network objects that can be managed using the Simple Network
Management Protocol (SNMP). The format of the MIB is defined as
part of the SNMP. A MIB is a collection of definitions defining the
properties of a managed object within a device. Every managed device
keeps a database of values for each of the definitions written in the
MIB. Definition of the MIB conforms to RFC1155 (Structure of
Management Information).
Summit WM20 User Guide, Software Release 4.2