Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 1770)

SNMP Introduction
Software Reference for x310 Series Switches
67.12 AlliedWare Plus TM Operating System - Version 5.4.4C C613-50046-01 REV A
SNMPv3 Message Protocol Format
Table 67-4: SNMPv3 PDUs
Value Meaning
msgVersion Identifies the message format to be SNMPv3.
msgID An identifier used between SNMP entities to coordinate
message requests and responses. Note that a message
response takes the msgID value of the initiating
message.
msgMaxSize Conveys the maximum message size (in octets) an
integer between 484 and 2
31
-1, supported by the sender
of the message. Specified as msgFlags. A single octet
whose last three bits indicate the operational mode for
privacy, authentication, and report.
msgSecurityModel An identifier used to indicate the security mode (i.e.
SNMPv1, SNMPv2c or SNMPv3 to be used when
processing the message. Note that although only the
SNMPv3 identifier is accepted by the switch, these
earlier version message formats are detected by the
msgVersion field and processed appropriately.
msgAuthoritativeEngineID The ID of the authoritative engine that relates to a
particular message, i.e. the source engine ID for Traps,
Responses and Reports, and the destination engine for
Gets, GetNexts, Sets, and Informs.
msgAuthoritativeEngineBoots A value that represents the number of times the
authoritative engine has rebooted since its installation.
Its value has the range 1 to 2
31
-1.
msgAuthoritativeEngineTime The number of seconds since the authoritative engine
snmpEngineBoots counter was last incremented.
msgUserName The name of the user (principal) on whose behalf the
message is being exchanged.
msgAuthenticationParameters If the message has been authenticated, this field
contains a serialized OCTET STRING representing the first
12 octets of the HMAC-MD5-96 output done over the
whole message.
msgPrivacyParameters For encrypted data, this field contains the “salt” used to
create the DES encryption Initialization Vector (IV).
ContextEngineID Within a particular administrative domain, this field
uniquely identifies an SNMP entity that may realize an
instance of a context with a particular contextName
ContextName A unique name given to a context within a particular
SNMP entity.