director 2/64 service manual

director 2/64 service manual Glossary–19
Glossary
SNMP community
Also known as SNMP community string. An SNMP community is a cluster of managed
products (in SNMP terminology, hosts) to which a server or managed product running the
SNMP agent belongs.
SNMP community name
The name assigned to a given SNMP community. Queries from an SNMP management station
to a device running an SNMP agent will only elicit a response if those queries are addressed
with the correct SNMP community name.
SSP
See system services processor.
storage area network (SAN)
A high-performance data communications environment that interconnects computing and
storage resources so that the resources can be effectively shared and consolidated.
subnet mask
Used by a computer to determine whether another computer with which it needs to
communicate is located on a local or remote network. The network mask depends upon the
class of networks to which the computer is connecting. The mask indicates which digits to
look at in a longer network address and allows the router to avoid handling the entire address.
switchover
Changing a backup FRU to the active state, and the active FRU to the backup state.
switch priority
Value configured into each switch in a fabric that determines its relative likelihood of
becoming the fabric’s principal switch.
system automation for operating system 390 (SA OS/390)
IBM-licensed software that provides System/390 Parallel Sysplex management, automation
capabilities, and integrated systems and network management. SA OS/390 manages host,
remote processor, and I/O operations. SA OS/390 integrates the functions of Automated
Operations Control for MVS, ESCON Manager, and Target System Control Facility.
system services processor (SSP)
Controls the RS-232 maintenance port, the Ethernet port, and the operator panel of a Fibre
Channel director.