3Com V6100, User Manual Manual, Page: 360 / 496

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V6100 and V7122 User Guide
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New format:
The following MIBs feature an identical structure. Each includes two major sub-trees.
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Configuration sub tree – enables configuration of general attributes of the MIB and
specific attributes of the monitored objects.
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Data sub tree
The monitoring results are presented in tables. Each table includes one or two indices. When
there are two indices, the first index is a sub-set in the table (e.g., trunk number) and the
second (or a single where there is only one) index represents the interval number (present -
0, previous - 1 and the one before - 2).
The MIBs include:
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acPMMedia – for media (voice) related monitoring (e.g., RTP, DSP’s).
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acPMControl – for Control-Protocol related monitoring (e.g., connections, commands).
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acPMPSTN - for PSTN related monitoring such as channel use, trunk utilization.
Note that the acPMTrunkUtilizationTable is not supported.
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acPMSystem – for general (system related) monitoring.
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The log trap, acPerformanceMonitoringThresholdCrossing (non-alarm), is sent out every
time the threshold of a Performance Monitored object is crossed. The severity field is
'indeterminate' when the crossing is above the threshold and 'cleared' when it falls bellow
the threshold. The 'source' varbind in the trap indicates the object for which the threshold
is being crossed.
TrunkPack-VoP Series Supported MIBs
The V7122 contains an embedded SNMP Agent supporting the following MIBs:
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Standard MIB (MIB-2) - The various SNMP values in the standard MIB are defined in
RFC 1213. The standard MIB includes various objects to measure and monitor IP
activity, TCP activity, UDP activity, IP routes, TCP connections, interfaces and general
system indicators.
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RTP MIB - The RTP MIB is supported in conformance with the IETF RFC 2959. It
contains objects relevant to the RTP streams generated and terminated by the device
and to RTCP information related to these streams.
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Trunk MIB - The Trunk MIB contains objects relevant to E1/T1 Trunk interfaces.
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NOTIFICATION-LOG-MIB - This standard MIB (RFC 3014 -
iso.org.dod.internet.mgmt.mib-2) is supported as part of our implementation of carrier
grade alarms.
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ALARM-MIB - This is an IETF MIB (RFC 3877) also supported as part of our
implementation of carrier grade alarms. This MIB is a new standard and is therefore
under the 3Com.acExperimental branch.