Glossary
Ping | Packet InterNet Grouper. PING is a program used to test whether a |
| particular network destination on the Internet is online (i.e. working) by |
| repeatedly bouncing a “signal” off a specified address and seeing how |
| long that signal takes to complete the round trip. No return signal - site is |
| down or unreachable. Portion is returned - trouble with the connection. |
Protocol
Point-to-Point Protocol (PPP)
PVC
Procedure or set of rules.
Provides a standard means of encapsulating data packets sent over a
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.
QoS | Quality of Service. QoS is a measure of the telecommunications (voice, |
| data or video) service quality provided to a subscriber. |
RADIUS | Remote Authentication |
| based authentication software system. The software supports remote |
| access applications, allowing an organization to maintain user profiles in |
| a centralized database residing on an authentication server which can be |
| shared by multiple remote access servers. |
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. |
Glossary - 6 | CMG Router - Release 2.7 |
