Technical data

Glossary-8 Brocade SilkWorm 4100 Hardware Reference Manual
Publication Number: 53-0000563-02
ECCN Export classification control number. A government classification of encryption. For example, SSH is
in the high-encryption category (number 5x02) and therefore has certain restrictions regarding its
transfer.
edge fabric A Fibre Channel fabric connected to an FC router via an EX_Port (where hosts and storage are attached
in a meta-SAN).
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 frame exchange across the fabric, between source and
destination. See also BB_Credit, end-to-end flow control.
EIA rack A storage rack that meets the standards set by the Electronics Industry Association (EIA).
ELP Exchange link parameters.
ELS Extended link service. ELSs are sent to the destination N_Port to perform the requested function or
service. ELS is a Fibre Channel standard that is sometimes referred to as “Fibre Channel Physical
(FC_PH) ELS.”
EM Environmental monitor. Monitors FRUs and reports failures.
embedded port An embedded port (or domain controller) communicates and get updates from other switches'
embedded ports. The well-known address is fffcdd, where dd = domain number.
EMI Electromagnetic interference.
emulex A brand of host bus adapter.
enabled zone
configuration
The currently enabled configuration of zones. 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 The basic Brocade software license that allows one E_Port per switch.
EOF End of frame. A group of ordered sets used to mark the end of a frame.
error As it applies to the Fibre Channel industry, a missing or corrupted frame, timeout, loss of
synchronization, or loss of signal (link errors). See also loop failure.
Ethernet Popular protocols for LANs.
EVMd Event management database. Delivers FDMI-related events.
EX_Port A type of E_Port that connects an FC router to an edge fabric. EX_Ports limit the scope of fabric
services scope but provide device connectivity using FC-NAT.
exchange The highest-level Fibre Channel mechanism used for communication between N_Ports. Composed of
one or more related sequences, it can work in either one or both directions.