HP StorageWorks 4/16 Brocade SAN Glossary for Fabric OS v6.0.0 - Page 2

Administrative Domain (AD) Part of Brocade's virtual fabric strategy, a filtered administrative view of the fabric. The logical view presented in an AD filters attributes of switch ports and end devices based on AD membership. ADs allow device resources in a fabric to be grouped together and provide the ability to manage them separately. Advanced zoning In EZSwitchSetup, a zoning option that allows you to customize zoning and is appropriate for SAN administrators who have the experience to perform manual zoning. Alias server A proposed standard as part of FC-GS-3; it will use the well-known address FFFFF8 and will maintain identifier mappings to support multicast group management AL_PA Arbitrated Loop Physical Address. An 8-bit value used to identify a device participating in an Arbitrated Loop. AL_TIME Arbitrated Loop Timeout value. Twice the amount of time it would take for a transmission word to propagate around a worst-case loop. The default value is 15 milliseconds (ms). ANSI American National Standards Institute. Governing body for standards in the U.S. ARB Arbitrative Primitive Signal. Applies only to an Arbitrated Loop topology, and is transmitted as the fill word by an L_Port to indicate the port is arbitrating access to the loop. Arbitrated Loop A shared 100/200-megabytes-per-second Fibre Channel transport supporting up to a maximum of 126 devices and 1 attachment to a fabric. Ports with lower AL_PAs have higher priorities. Arbitration A method of gaining orderly access to a shared-loop topology. ARP Address Resolution Protocol. A TCP/IP function for associating an IP address with a link-level address. ASIC Application-Specific Integrated Circuit. ATM Asynchronous Transfer Mode. A high-speed packet-switching transport used for transmitting data over LANs or WANs that transmits fixed-length units of data. It provides any-to-any connectivity and nodes can transmit simultaneously. Audit event Fabric OS event that is logged. Authentication The process of verifying through a password that an entity in a fabric, such as a switch, should or should not have access to the fabric. Autoleveling A process run on embedded switches (also called "blades") that is triggered when the active CP detects that the blade contains a different version of the firmware, regardless of which version is older. Autoleveling downloads the firmware to the embedded switch, swaps partitions, reboots the switch, and copies the new firmware from the primary partition to the secondary partition. Brocade SAN Glossary 1/29/2008 Page 2 of 29