Extreme Networks Summit WM User Manual page 316

Glossary
Term
OSPF
OUI
Packet
PAP
PDU
PEAP
PHP server
PKI
PoE
POST
316
Explanation
Open Shortest Path First, an interior gateway routing protocol developed
for IP networks based on the shortest path first or link-state algorithm.
Routers use link-state algorithms to send routing information to all nodes
in an internetwork by calculating the shortest path to each node based on a
topography of the Internet constructed by each node. Each router sends
that portion of the routing table (keeps track of routes to particular
network destinations) that describes the state of its own links, and it also
sends the complete routing structure (topography). Using OSPF, a host that
obtains a change to a routing table or detects a change in the network
immediately multicasts the information to all other hosts in the network so
that all will have the same routing table information. The host using OSPF
sends only the part that has changed, and only when a change has taken
place. (RFC2328)
Organizationally Unique Identifier (used in MAC addressing).
The unit of data that is routed between an origin and a destination on the
Internet or any other packet-switched network. When any file is sent from
one place to another on the Internet, the Transmission Control Protocol
(TCP) layer of TCP/IP divides the file into packets. Each packet is
separately numbered and includes the Internet address of the destination.
The individual packets for a given file may travel different routes through
the Internet. When they have all arrived, they are reassembled into the
original file (by the TCP layer at the receiving end).
Password Authentication Protocol is the most basic form of authentication,
in which a user's name and password are transmitted over a network and
compared to a table of name-password pairs. Typically, the passwords
stored in the table are encrypted. (See CHAP).
Protocol Data Unit. A data object exchanged by protocol machines (such as
management stations, SMUX peers, and SNMP agents) and consisting of
both protocol control information and user data. PDU is sometimes used as
a synonym for "packet''.
PEAP (Protected Extensible Authentication Protocol) is an IETF draft
standard to authenticate wireless LAN clients without requiring them to
have certificates. In PEAP authentication, first the user authenticates the
authentication server, then the authentication server authenticates the user.
If the first phase is successful, the user is then authenticated over the SSL
tunnel created in phase one using EAP-Generic Token Card (EAP-GTC) or
Microsoft Challenged Handshake Protocol Version 2 (MSCHAP V2). (See
also EAP-TLS).
Hypertext Preprocessor
Public Key Infrastructure
Power over Ethernet. The Power over Ethernet standard (802.3af) defines
how power can be provided to network devices over existing Ethernet
connection, eliminating the need for additional external power supplies.
Power On Self Test, a diagnostic testing sequence performed by a computer
to determine if its hardware elements are present and powered on. If so,
the computer begins its boot sequence.
Summit WM User Guide, Software Version 5.3