Specifications

Glossary
954 Fabric OS Version 3.1.x/4.1.x Reference Guide
E_Port
Expansion Port. A type of switch port that can be connected to an E_Port on another switch to
create an ISL.
See also ISL.
EE_Credit
End-to-end Credit. The number of receive buffers allocated by a recipient port to an originating
port. Used by Class 1 and 2 services to manage the exchange of frames across the fabric between
source and destination.
See also End-to-end Flow Control, BB_Credit.
EIA Rack
A storage rack that meets the standards set by the Electronics Industry Association.
ELWL
Extra Long Wavelength. Laser light with a periodic length greater than 1300 nm (e.g., 1420 or
1550). ELWL lasers are used to transmit Fibre Channel data over distances greater than 10 Km.
Also known as XLWL.
Enabled Zone Configuration
The currently enabled zone configuration. Only one configuration can be enabled at a time.
See also defined zone configuration, zone configuration.
End-to-end Flow Control
Governs flow of class 1 and 2 frames between N_Ports.
See also EE_Credit.
Entry Fabric
Basic HP license that allows one E_Port per switch. Not supported by StorageWorks Core
switches.
Error
As applies to Fibre Channel, a missing or corrupted frame, time-out, loss of synchronization, or
loss of signal (link errors).
See also loop failure.
ESD
Electrostatic Discharge.