HP StorageWorks 2/16V Brocade Glossary (53-1000040-03, November 2006) - Page 36

Glossary tenancy The time from when a port wins arbitration in a loop until the same port returns to the monitoring state. Also referred to as "loop tenancy." throughput The rate of data flow achieved within a cable, link, or system. Usually measured in bps (bits per second or b/sec). See also BB fabric. tiering The process of grouping particular SAN devices by function and then attaching these devices to particular switches or groups of switches based on that function. Time Server A Fibre Channel service that enables centralized management of switch time settings. topology As it applies to Fibre Channel technology, the configuration of the Fibre Channel network and the resulting communication paths allowed. There are three possible topologies: Point to point-A direct link between two communication ports. Switched fabric-Multiple N_Ports linked to a switch by F_Ports. Arbitrated loop-Multiple NL_Ports connected in a loop. track changes A Brocade Fabric OS feature that can be enabled to report logins, logouts, and configuration uploads. The output from the track-changes feature is output to the system error log for the switch. transceiver A device that converts one form of signaling to another for transmission and reception; in fiber optics, optical to electrical. translate phantom domain A 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. Sometimes referred to as "phantom domain," or "xlate domain." If an FR4-18i AP blade is attached using an EX_Port to an edge fabric, it will create translate phantom domains in that fabric corresponding to the remote edge fabrics with active LSANs defined. See also Fibre Channel Routing Services and phantom device. Translative A mode in which private devices can communicate with public devices across the fabric. Mode trap The message sent by an SNMP agent on a switch to inform the SNMP management station of an error. See also SNMP. trunking A 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. trunk ports The ports in a set of trunked ISLs. TS Time Server. tunneling A technique for enabling two networks to communicate when the source and destination hosts both use the same protocol but are connected through a "tunnel" over a network using a different protocol. For example, using FCIP two Fibre Channel fabrics can be connected through a tunnel over an IP network. See also FCIP. 32 Brocade Glossary Publication Number: 53-1000040-03