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Departmental Switch Model DS-16B2 Fabric OS Procedures Manual
Glossary
Hub A Fibre Channel wiring concentrator that collapses a loop topology
into a physical star topology. Nodes are automatically added to the
loop when active and removed when inactive.
I
Idle Continuous transmission of an ordered set over a Fibre Channel link
when no data is being transmitted, to keep the link active and
maintain bit, byte, and word synchronization.
Initiator A server or workstation on a Fibre Channel network that initiates
communications with storage devices. See also Tar ge t .
IOD In order Delivery; a parameter that, when set, guarantees that frames
are either delivered in order or dropped.
ISL Interswitch Link; a Fibre Channel link from the E_Port of one switch
to the E_Port of another. See also E_Port and Cascade.
ISL Trunking A Brocade feature that enables distribution of traffic over the
combined bandwidth of up to four ISLs (between adjacent switches),
while preserving in order delivery. A set of trunked ISLs is called a
trunking group; each port employed in a trunking group is called a
trunking port. See also Master Port.
Isolated
E_Port
An E_Port that is online but not operational due to overlapping
domain IDs or nonidentical parameters (such as E_D_TOVs). See also
E_Port.
IU Information Unit; a set of information as defined by either upper
level process protocol definition or upper level protocol mapping.
J
JBOD Just a Bunch Of Disks; indicates a number of disks connected in a
single chassis to one or more controllers. See also RAID.
K
K28.5 A special 10 bit character used to indicate the beginning of a
transmission word that performs Fibre Channel control and signaling
functions. The first seven bits of the character are the comma pattern.
See also Comma.