director 2/64 service manual

director 2/64 service manual Glossary–1
Glossary
This glossary defines terms used in this guide or related to this product and is not a
comprehensive glossary of computer terms.
access control
Method of control (with associated permissions) by which a set of devices can access other
devices across a network. See also persistent binding and zoning.
active FRU
A redundant field-replaceable unit that is operating as the active and not the backup FRU.
Contrast with backup FRU.
active zone set
Single zone set that is active in a multi-switch fabric. It is created when you enable a specified
zone set. This zone set is compiled by checking for undefined zones or aliases.
agent
Software that processes queries on behalf of an application and returns replies.
alarm
Simple network management protocol (SNMP) message notifying an operator of a network or
device problem.
alias server
Fabric software facility that supports multicast group management.
allowed port connection
In S/390 mode, this attribute establishes dynamic connectivity capability.
arbitration
Process of selecting one device from a collection of devices that request service
simultaneously.