Technical data

230 HP Surestore FC Switch 6164 Installation and Reference Guide
Translative mode Mode
in which public devices can communicate with private devices across
fabric.Translates 8-bit to 24-bit addresses.
Transmission
Character
A 10-bit character encoded according to the rules of the 8b/10b algorithm.
See also 8b/10b encoding, Transmission word.
Transmission Word Group of four transmission characters, totaling 40 bits. Two types: data words
and ordered sets. See also Data word, Ordered set, Transmission character.
Trap (SNMP) Message sent by SNMP agent to inform SNMP management station of
critical error. See also SNMP.
Tunneling Technique for enabling source and destination hosts to communicate when
on same type of network, but connected by a different type of network.
U_Port Universal Port. Switch port that can operate as G_Port, E_Port, F_Port, or
FL_Port. A port is defined as a U_Port if not connected, or if it has not
assumed a specific function in the fabric.
UDP User Datagram Protocol. A protocol that runs on top of IP and provides port
multiplexing for higher layer protocols.
ULP Upper Layer Protocol. Protocol that runs on top of fibre channel. Typical
upper layer protocols: SCSI, IP, HIPPI, IPI.
ULP_TOV Upper Level Timeout Value.The minimum time that a SCSI ULP process
waits for SCSI status before initiating ULP recovery.
Unicast Transmission of data from a single source to single destination. See also
Broadcast, Multicast.
Web Tools Software product that provides a graphical interface for monitoring and
managing individual switches or entire fabrics from standard workstations.
Well-known address As applies to fibre channel, a logical address stored on the switch and defined
by fibre channel standards as being assigned to a specific function.
WWN Worldwide name. Identifier that is unique world-wide. Each entity in a fabric
has a separate WWN.
Xmitted Close State The state in which an L_Port cannot send messages, but can retransmit
messages within the loop. A port in the XMITTED CLOSE state cannot
attempt to arbitrate.