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The SNMP Protocol
SNMP version 1 only defines four operations:
get- retrieve specific management information from a managed
node.
get-next- retrieve via MIB traversal, management information.
set- used to manipulate management information.
trap- used to report extraordinary events.
It also defines the reply operation:
get-response- contains the information requested from the managed node.
SNMP (normally) uses the low-overhead, connectionless UDP protocol
for transmission of requests and responses.
An SNMP message contains, along with data describing the SNMP
commands or responses, a community name
identifying that the sender is a member of an identified
community, or group of managed nodes. This allows
a trivial level of authentication, since the community name almost
always defaults to "public".
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