director 2/64 installation guide

director 2/64 installation guide Glossary–17
Glossary
switch priority
Value configured into each switch in a fabric that determines its relative likelihood of
becoming the fabric’s principal switch.
system services processor
Controls the RS-232 maintenance port, the Ethernet port, and the operator panel of a Fibre
Channel director.
topology
Logical and/or physical arrangement of stations on a network.
trap
Unsolicited notification of an event originating from a SNMP managed device and directed to
an SNMP network management station.
trap host
SNMP management workstation that is configured to receive traps.
trunk cable
Cable consisting of multiple fiber pairs that do not directly attach to an active device. This
cable usually exists between distribution panels.
Contrast with jumper cable.
unblocked port
Devices attached to an unblocked port can login to the director and communicate with devices
attached to any other unblocked port assuming that this is supported by the current zoning
configuration.
unicast
Communication between a single sender and a single receiver over a network. Compare to
multicast and anycast (communication between any sender and the nearest of a group of
receivers).
universal port module card
Each universal port module (UPM) card provides four Fibre Channel connections through
duplex small form factor (SFF) pluggable fiber-optic transceivers. UPM cards allow 1 Gb/sec
and 2 Gb/sec operation.
vital product data
System-level data stored by the backplane in the electrically erasable programmable read-only
memory. This data includes serial numbers and identifies the manufacturer.
UPM card
See universal port module card.
VPD
See vital product data.