Technical data

218 HP Surestore FC Switch 6164 Installation and Reference Guide
ATM Asynchronous Transfer Mode. Transport for transmitting data over LANs or
WANs that transmit fixed-length units of data. Provides any-to-any
connectivity and allows nodes to transmit simultaneously.
AW_ TO V Arbitration Wait Timeout Value. The minimum time an arbitrating L_Port
waits for a response before beginning loop initialization.
Bandwidth The total transmission capacity of a link, cable, or system.
BB_Credit Buffer-to-buffer credit. The number of frames that can be transmitted to a
directly connected recipient or within an arbitrated loop. Determined by
number of available receive buffers. See also Buffer-to-buffer flow control,
EE_Credit.
Beginning Running
Disparity
The disparity at the transmitter or receiver when the special character
associated with an ordered set is encoded or decoded. See also Disparity.
BER Bit Error Rate. Rate at which bits are expected to be received in error.
Expressed as ratio of error bits to total bits transmitted. See also Error.
Bit synch-ronization The delivery of correctly clocked bits at the required BER. See also BER.
Block As applied to fibre channel, upper level application data that is transferred
in a single sequence.
Broadcast Transmission of data from a single source to all devices in fabric, regardless
of zoning. See also Multicast, Unicast.
Buffer
-to-buffer flow
control
Management of frame transmission rate between directly connected ports or
within an arbitrated loop. See also BB_Credit.
Cascade Two or more interconnected fibre channel switches.
Circuit Established communication path between ports. Consists of two virtual
circuits that transmit in opposite directions. See also Link.
Class 1 A connection-oriented service that provides a dedicated connection between
two ports, with notification of delivery or nondelivery.
Class 2 A multiplex and connectionless frame switching service between two ports,
with notification of delivery or nondelivery.