Fabric OS Reference Manual

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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.
ULP Upper Layer Protocol. Protocol that runs on top of fibre channel. Typical
upper layer protocols: SCSI, IP, HIPPI, IPI.
Unicast Transmission of data from a single source to single destination. See also
Broadcast, Multicast.
Web Tools 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 worldwide. Each entity in a fabric
has a separate WWN.
Zone Set of hosts and devices attached to same fabric and having access
permission, including RSCNs and user data, to each other. Entities inside a
zone are not visible to entities outside the same zone, even if the outside
entities are in another zone.
Zone configuration A specified set of zones. Enabling a zone configuration enables all zones in
that configuration. See also Defined configuration, Enabled configuration.
Zoning Product that allows partitioning of fabric into logical groupings of devices.
See also Zone.