SNMP Configuration and Management Manual

Glossary
SNMP Configuration and Management Manual—424777-006
Glossary-11
port number
port number. A means for identifying an application entity to a transport service in the
Internet suite of protocols. On a NonStop host, each server has its own port number.
port 161. An SNMP protocol entity receives request and response messages at UDP port
161 on the host with which it is associated.
port 162. An SNMP protocol entity receives trap messages on UDP port 162 on the host
with which it is associated.
PROCESS object. The SNMP agent configuration object that describes attributes of the
agent process, such as the EMS collector to which the SNMP agent should route
events it generates.
PROFILE object. The SNMP agent configuration object that represents an entry in the
authentication table. The object has three attributes: COMMUNITY (the name of a
community), HOSTADDR (the Internet address of an SNMP manager station), and
ACCESS (READONLY or READWRITE).
proprietary. A protocol suite controlled by a vendor, and developed so that the vendor’s
computers can communicate with each other.
protocol. A set of rules used by computers to communicate with each other.
protocol data unit. A unit of information encoded according to specific protocol rules,
usually containing both protocol control and user data. The five PDUs supported by the
SNMP agent are:
GetRequest PDU
GetNextRequest PDU
GetResponse PDU
SetRequest PDU
Trap PDU
protocol suite. A group of protocols, all related to a common framework.
proxy agent. An SNMP agent that has access to information not held locally. This agent
must perform a nonlocal interaction to satisfy management requests that reference that
information.
read-only. A MIB object attribute that lets authorized communities retrieve, but not modify,
object values.
READONLY. An access mode that lets SNMP managers associated with a particular
community retrieve, but not modify, the values of MIB objects. MIB objects that have
read-only or read-write access are readable.
read-write. A MIB object attribute that lets authorized communities retrieve and alter object
values.