Glossary–12
director product manager user guide
Glossary
IOCDS
A data set that contains an I/O configuration definition built by the IOCP.
IOCP
See input/output configuration program.
IP address
See internet protocol address.
IPL
See initial program load.
ISL
See interswitch link.
jumper cable
Optical cable that provides physical attachment between two devices or between a device and
a distribution panel. Contrast with trunk cable.
latency
When used in reference to a Fibre Channel switching device, latency refers to the amount of
time elapsed between receipt of a data transmission at a switch’s incoming F_Port (from the
originating node port) to retransmission of that data at the switch’s outgoing F_Port (to the
destination N_Port). The amount of time it takes for data transmission to pass through a
switching device.
LIN
See link incident.
link
Physical connection between two devices in a switched fabric.
link incident (LIN)
Interruption to a Fibre Channel link due to loss of light or other cause.
load balancing
Ability to evenly distribute traffic over multiple interswitch links within a fabric. Load
balancing on HP directors takes place automatically.
logical port address
The port numbering system for a director with the FICON Management Server active.
