HP Surestore 6164 Distributed Fabrics User's Guide - Page 31

GLOSSARY This glossary provides definitions for fibre channel and switch terminology. Alias Server AL_PA Arbitrated Loop ATM Class F Class 2 Class 3 Community (SNMP) A fabric software facility that supports multicast group management. Arbitrated Loop Physical Address. An 8-bit value used to uniquely identify an individual port within a loop. A loop can have one or multiple AL_PAs. Afibre channel transport structured as a loop. Allows communication between ports without using a switch. Requires successful arbitration by a port before a circuit is established. Supports up to 126 devices and one fabric attachment. Asynchronous Transfer Mode. A broadband technology for transmitting data over LANs or WANs, based on relaying cells of a fixed size. Provides any-to-any connectivity, and nodes can transmit simultaneously. Connectionless service for interswitch control traffic. Provides notification of delivery or nondelivery between two E_Ports. Connectionless service between ports with notification of delivery or non delivery. Connectionless service between ports without notification of delivery. Other than notification, the transmission and routing of Class 3 frames is the same as Class 2 frames. A relationship between an SNMP agent and a set of SNMP managers that defines authentication, access control, and proxy characteristics. 31