SNMP简述

Simple Network Management Protocol
两个主要属性：
OID：
Object Identifier
MIB：
Management Information Base

Numerical OID(1.3.6.1.2.1.2.2.1.8)
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| translate by MIB
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Word-based OID

两个主要操作:

Polling:
Network monitor connects to device in port 161

Nortifying(trap):
Device sends OID related message to monitor system port 162