Dell PowerVault 51F (8P Fibre Channel Switch) - Manual (Page 149)

support.dell.com Glossary 1
Glossary
The following terms relate to the switch
and Fibre Channel connections.
Definition of Terms
Alias Server
A fabric software facility that supports
multicast group management.
Arbitrated Loop
The FC Arbitrated Loop (FC-AL) is a stan-
dard defined on top of the FC-PH
standard. It defines the arbitration on a
loop where several FC nodes share a com-
mon medium.
Community (SNMP)
An SNMP community is a relationship be-
tween an SNMP agent and a set of SNMP
managers that defines authentication, ac-
cess control, and proxy characteristics.
Credit
Credit, applied to a switch, is a numeric
value that represents the maximum num-
ber of receive buffers provided by an
F_Port or FL_Port to its attached N_Port
or NL_Port respectively such that the
N_Port or NL_Port may transmit frames
without over-running the F_Port or
NL_Port.
Class 2
In Class-2 service, the fabric and destina-
tion N_Port provide connectionless
service with notification of delivery or non-
delivery between the two N_Ports.
Class 3
Class-3 service provides a connectionless
service without notification of delivery be-
tween N_Ports. The transmission and
routing of Class-3 frames is the same as
for Class-2 frames.
Domain_ID
The domain number uniquely identifies
the switch in a fabric. This switch domain
ID is normally automatically assigned by
the switch and may be any value between
0 and 239. This number may also be as-
signed manually.
E_Port
A port is designated an E_Port when it is
used as an interswitch expansion port to
connect to the E_Port of another switch
to build a larger switch fabric.
E_D_TOV (Error Detect Time Out
Value)
E_D_TOV (Error-Detect Time-Out Value)
defines the time the switch waits for an
expected response before declaring an er-
ror condition. The error detect time out
value is adjustable in 1ms increments
from 2 seconds up to 10 seconds.
Fabric
The name applied to a network resulting
from the interconnection of switches and
devices comprised of high-speed fiber
connections. A fabric is an active, intelli-
gent, nonshared interconnect scheme for
nodes.