Carrier Access Network Device Axxius 800 - Manual (Page 547)

Axxius 800 - Release 2.2 Glossary - 15
Glossary
Password Authentication Protocol (PAP)
Password
Authentication
Protocol (PAP) An authentication protocol that allows Point-to-Point Protocol peers to
authenticate one another.
Peak Cell Rate
(PCR) The Peak Cell Rate, in cells/sec, is the cell rate which the source may
never exceed.
PLAR Private Line, Automatic Ringdown. A leased voice circuit that connects
two single instruments together. When either handset is lifted, the other
instrument automatically rings.
PMDL Path Maintenance Data Link.
Point-to-Point
Protocol (PPP) Provides a standard means of encapsulating data packets sent over a
single-channel WAN link. It is the standard WAN encapsulation
protocol for the interoperability of bridges and routers.
port A physical address that is associated with a physical connecting device.
protocol Procedure or set of rules.
PVC Permanent Virtual Circuit. A PVC is a permanent channel connection
between two ATM devices. PVC’s allow network transmissions to be
started without having to first establish a connection with the end point
ATM device. When a PVC is constructed, the end points of the
connection will agree upon a path in which data will travel, and therefore
agree upon the route that data will travel to reach its destination.
RIP Routing Information Protocol. RIP is based on distance vector
algorithms that measure the shortest path between two points on a
network, based on the addresses of the originating and destination
devices. The shortest path is determined by the number of "hops"
between those points. Each router maintains a routing table, or routing
database, of known addresses and routes; each router periodically
broadcasts the contents of its table to neighboring routers in order that the
entire network can maintain a synchronized database.