Brocade SAN Glossary for Fabric OS v6.0.0

Brocade SAN Glossary 1/29/2008 Page 27 of 29
Tiering The process of grouping particular SAN devices by function and then
attaching these devices to particular switches of groups of switches based
on that function.
Time Server (TS) A Fibre Channel service that allows for the centralized management of
switch time settings.
Top Talker (TT) A fabric service (part of the optionally licensed Advanced Performance
Monitoring feature) that provides real-time information about the top “n”
bandwidth-consuming flows from a set of a large number of flows passing
through a specific port in the network. See also Adaptive Networking.
Topology The physical or logical arrangement of devices in a networked configuration.
TPC Third Party Copy. A protocol for performing tape backups without using
server resources.
Traffic Isolation A fabric service that allows you to control the flow of interswitch traffic by
creating a dedicated path for traffic flowing from a specific set of source
ports (N_Ports). See also Adaptive Networking.
Transceiver A device that converts one form of signaling to another for transmission and
reception; in fiber optics it means optical to electrical.
Translate phantom domain
An FC router virtual domain that represents an entire fabric. Device
connectivity can be achieved from one fabric to another over the backbone
fabric through this virtual domain, without merging the two fabrics.
Translative mode A mode that allows public devices to communicate with private devices
across a fabric.
Transmission character A valid or invalid character transmitted serially over fiber.
Transmission word A string of 4 consecutive transmission characters.
Trap An SNMP mechanism for agents to notify the SNMP management station of
significant events.
Trunking A fabric feature that enables distribution of traffic over the combined
bandwidth of up to eight ISLs between adjacent switches, while preserving
in-order delivery.
Trunk group A set of ports that share traffic to a destination domain. Bloom-based
switches supported trunk groups of up to four ISLs. Condor and GoldenEye
based switches support trunk groups of up to eight ISLs.
TTL Time To Live. The number of seconds an entry exists in cache before it
expires.
Tunneling A technique for making two different networks interact where the source and
destination hosts are on the same type of network, but there is a different
network in between.