Cambridge SoundWorks P460 manual Bus, Cam, Cbr

Glossary

inform the bridges of the topology of the network and detect loops and topology changes.

Broadcasting

A common method of information transmission in which a packet is sent to every port on the network.

Bridge

A device connecting two networks using similar protocols. A bridge filters and forwards data between the networks according to their destination addresses.

Burst

A transmission of data at a faster rate than normal. Data bursts can be carried out in several ways. A burst is always limited in time and can take place only under special conditions.

Bus

A transmission path or channel. A bus is typically an electrical connection with one or more conductors, where all attached devices receive all transmissions at the same time.

BUS

Broadcast and Unknown Server. A multicast server used in ELANs that is used to forward multicast and broadcast traffic to the appropriate clients.

CAM

Content Address Memory. A list kept by each port containing the addresses of all network elements connected to the port. CAM is accessed according to its contents, not its memory address.

CBR

Constant (or Continuous) Bit Rate. An ATM class of service that supports the transmission of a continuous bit-stream of information. CBR is used for connections that depend on precise timing to ensure undistorted delivery, such as voice and video.

Cell

The basic ATM transmission unit, consisting of a 53-byte packet (5-byte header and 48-byte payload). User traffic is segmented into cells at the source and reassembled at the destination.

Cell Header

The 5-byte ATM cell header contains control information regarding the destination path and flow control.

Avaya P460 Reference Guide 197