IBM TotalStorage SAN140M, Installation And Service Manual

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SAN140M Installation and Service Manual 370
transmission control
protocol/Internet
protocol
A layered set of protocols (network and transport) that allows
sharing of applications among devices in a high-speed LAN
communication environment.
trap An unsolicited notification of an event originating from an SNMP-
managed device and directed to an SNMP network management
station.
trap recipient In SNMP, a network management station that receives messages for
configured events that occur at a managed director or switch.
U
UDP See user datagram protocol .
ULP See upper level protocol .
uniform resource
locator
The address (specified as a name or IP address) of a document or
other resource available on the Internet.
uninterruptable power
supply
A buffer between public utility power or other power source, and a
system that requires precise, uninterrupted power.
universal port module
card
A printed circuit board (140M director only) that provides four port
connections that support 1.0625 or 2.125 Gbps Fibre Channel
communication. Port connectivity is provided through SFP optical
transceivers. Contrast with
fibre port module card .
UPM See universal port module card .
upper level protocol A protocol that maps to and runs on top of the Fibre Channel through
the FC-4 layer. Examples of upper level protocols include Internet
protocol (IP) and small computer system interface (SCSI).
UPS
See uninterruptable power supply .
URL See uniform resource locator .
user datagram
protocol
A connectionless protocol that runs on top of IP networks. UDP offers
very few error recovery services, instead providing a direct way to
send and receive datagrams over an IP network. UDP is primarily
used for broadcasting messages over an entire network.