Dell PowerVault 50F (Fibre Channel Switch) User Manual
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Glossary: Dell PowerVault™ 50F 8-Port Fibre Channel Switch User's Guide
file:///C|/Users/sharon_anand/Desktop/PowerVault/50f_enug/GLOSSARY.HTM[3/15/2013 11:27:31 AM]
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 31. This number may also be assigned 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
E_D_TOV (Error-Detect Time-Out Value) defines the time
the switch waits for an expected response before declaring
an error condition. The error detect time out value is
adjustable in 1 ms 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, intelligent,
nonshared interconnect scheme for nodes.
FL_Port
The FL_Port is the Fabric access port used to connect
NL_Ports to the switch in a loop configuration.
F_Port
The F_Port is the Fabric access port used to connect an
N_Port.
FSPF
Fibre-Channel shortest path first.
R_A_TOV
R_A_TOV (Resource Allocation Time Out Value) used to
time out operations that depend on the maximum possible
time that a frame could be delayed in a Fabric and still be
delivered. The value of R_A_TOV is adjustable in 1-
microsecond increments over a range from 10 to 120
seconds.
Isolated E_Port
ISL is online but not operational between switches
because of overlapping domain ID or nonidentical
parameters such as E_O_TOVs.
Simple Network Management Protocol
SNMP is a TCP/IP protocol that generally uses the User
Datagram Protocol (UDP) to exchange messages between
a management information base and a management client
residing on a network. Because SNMP does not rely on
the underlying communication protocols, it can be made
available over other protocols, suc as UDP/IP.
SNMPv1
The original standard for SNMP is now referred to as
SNMPv1.
trap (SNMP)
A trap is a mechanism for SNMP agents to notify the
SNMP management station of significant events.
unicast
Unicast routing provides one or more optimal path(s)
between any of two switches that make up the Fabric. This
is for a single copy of the data to be sent to designated
destinations.
World Wide Name (WWN)
A WWN uniquely identifies a switch on local and global
networks.