SMON-MIB
AI MIB Summary
SMON-MIB defines the standard interface for Switched Network remote monitoring devices to collect and report traffic statistics, including port utilization, error counters, and historical traffic samples via the RMON (Remote Monitoring) protocol. It enables centralized network analysis by aggregating Layer 2 switching metrics such as packet drops, broadcast/multicast rates, and host statistics without requiring active polling of individual endpoints.
The MIB module for managing remote monitoring device implementations for Switched Networks
Main OID:
switchRMON.1.3.6.1.4.1.3727.20.20.3.1.16.22
62
Objects
Active
Status
6
Dependencies
Imported Objects
Objects
62 total| Object Name |
|---|
smonCapabilitiesAn indication of the SMON MIB groups supported
by this agent.ro Bits .1.3.6.1.4.1.3727.20.20.3.1.16.19.15 |
smonMIBCompliances OBJECT IDENTIFIER .1.3.6.1.4.1.3727.20.20.3.1.16.20.3 |
smonMIBGroups OBJECT IDENTIFIER .1.3.6.1.4.1.3727.20.20.3.1.16.20.4 |
switchRMONThe MIB module for managing remote monitoring device
implementations for Switched Networks MODULE-IDENTITY .1.3.6.1.4.1.3727.20.20.3.1.16.22 |
smonMIBObjects OBJECT IDENTIFIER .1.3.6.1.4.1.3727.20.20.3.1.16.22.1 |
dataSourceCaps OBJECT IDENTIFIER .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.1 |
dataSourceCapsTableThis table describes RMON data sources and port copy
capabilities. An NMS MAY use this table to discover the
identity and attributes of the data sources on a given agent
implementation. Similar to the probeCapabilities object,
actual row-creation operations will succeed or fail based on
the resources available and parameter values used in each
row-creation operation.
Upon restart of the RMON agent, the dataSourceTable, ifTable,
and perhaps entPhysicalTable are initialized for the available
dataSources.
For each dataSourceCapsEntry representing a VLAN or
entPhysicalEntry the agent MUST create an associated ifEntry
with a ifType value of 'propVirtual(53)'. This ifEntry will be
used as the actual value in RMON control table dataSource
objects. The assigned ifIndex value is copied into the
associated dataSourceCapsIfIndex object.
It is understood that dataSources representing VLANs may not
always be instantiated immediately upon restart, but rather as
VLAN usage is detected by the agent. The agent SHOULD attempt
to create dataSource and interface entries for all dataSources
as soon as possible. SEQUENCE OF DataSourceCapsEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.1.1 |
dataSourceCapsEntryEntries per data source containing descriptions of data
source and port copy capabilities. This table is populated by
the SMON agent with one entry for each supported data
source. DataSourceCapsEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.1.1.1 |
dataSourceCapsObjectDefines an object that can be a SMON data source or a
source or a destination for a port copy operation. SmonDataSource .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.1.1.1.1 |
dataSourceRmonCapsGeneral attributes of the specified dataSource. Note that
these are static attributes, which SHOULD NOT be adjusted
because of current resources or configuration.
- countErrFrames(0)
The agent sets this bit for the dataSource if errored frames
received on this dataSource can actually be monitored by the
agent The agent clears this bit if any errored frames are
not visible to the RMON data collector.
- countAllGoodFrames(1)
The agent sets this bit for the dataSource if all good
frames received on this dataSource can actually be monitored
by the agent. The agent clears this bit if any good frames
are not visible for RMON collection, e.g., the dataSource is
a non-promiscuous interface or an internal switch interface
which may not receive frames which were switched in hardware
or dropped by the bridge forwarding function.
- countAnyRmonTables(2)
The agent sets this bit if this dataSource can actually be
used in any of the implemented RMON tables, resources
notwithstanding. The agent clears this bit if this
dataSourceCapsEntry is present simply to identify a
dataSource that may only be used as portCopySource and/or a
portCopyDest, but not the source of an actual RMON data
collection.
- babyGiantsCountAsGood(3)
The agent sets this bit if it can distinguish, for counting
purposes, between true giant frames and frames that exceed
Ethernet maximum frame size 1518 due to VLAN tagging ('baby
giants'). Specifically, this BIT means that frames up to
1522 octets are counted as good.
Agents not capable of detecting 'baby giants' will clear
this bit and will view all frames less than or equal to 1518
octets as 'good frames' and all frames larger than 1518
octets as 'bad frames' for the purpose of counting in the
smonVlanIdStats and smonPrioStats tables.
Agents capable of detecting 'baby giants' SHALL consider
them as 'good frames' for the purpose of counting in the
smonVlanIdStats and smonPrioStats tables.ro Bits .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.1.1.1.2 |
dataSourceCopyCapsPortCopy function capabilities of the specified dataSource.
Note that these are static capabilities, which SHOULD NOT be
adjusted because of current resources or configuration.
- copySourcePort(0)
The agent sets this bit if this dataSource is capable of
acting as a source of a portCopy operation. The agent clears
this bit otherwise.
- copyDestPort(1)
The agent sets this bit if this dataSource is capable of
acting as a destination of a portCopy operation. The agent
clears this bit otherwise.
- copySrcTxTraffic(2)
If the copySourcePort bit is set:
The agent sets this bit if this dataSource is capable of
copying frames transmitted out this portCopy source. The
agent clears this bit otherwise. This function is needed
to support full-duplex ports.
Else:
this bit SHOULD be cleared.
- copySrcRxTraffic(3)
If the copySourcePort bit is set:
The agent sets this bit if this dataSource is capable of
copying frames received on this portCopy source. The agent
clears this bit otherwise. This function is needed to
support full-duplex ports.
Else:
this bit SHOULD be cleared.
- countDestDropEvents(4)
If the copyDestPort bit is set:
The agent sets this bit if it is capable of incrementing
portCopyDestDropEvents, when this dataSource is the
target of a portCopy operation and a frame destined to
this dataSource is dropped (for RMON counting purposes).
Else:
this BIT SHOULD be cleared.
- copyErrFrames(5)
If the copySourcePort bit is set:
The agent sets this bit if it is capable of copying all
errored frames from this portCopy source-port, for
errored frames received on this dataSource.
Else:
this BIT SHOULD be cleared.
- copyUnalteredFrames(6)
If the copySourcePort bit is set:
The agent sets the copyUnalteredFrames bit If it is
capable of copying all frames from this portCopy
source-port without alteration in any way;
Else:
this bit SHOULD be cleared.
- copyAllGoodFrames(7)
If the copySourcePort bit is set:
The agent sets this bit for the dataSource if all good
frames received on this dataSource are normally capable
of being copied by the agent. The agent clears this bit
if any good frames are not visible for the RMON portCopy
operation, e.g., the dataSource is a non-promiscuous
interface or an internal switch interface which may not
receive frames which were switched in hardware or
dropped by the bridge forwarding function.
Else:
this bit SHOULD be cleared.ro Bits .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.1.1.1.3 |
dataSourceCapsIfIndexThis object contains the ifIndex value of the ifEntry
associated with this smonDataSource. The agent MUST create
'propVirtual' ifEntries for each dataSourceCapsEntry of type
VLAN or entPhysicalEntry.ro InterfaceIndex (IF-MIB) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.1.1.1.4 |
smonStats OBJECT IDENTIFIER .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2 |
smonVlanStatsControlTableControls the setup of VLAN statistics tables.
The statistics collected represent a distribution based on
the IEEE 802.1Q VLAN-ID (VID), for each good frame attributed
to the data source for the collection. SEQUENCE OF SmonVlanStatsControlEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.1 |
smonVlanStatsControlEntryA conceptual row in the smonVlanStatsControlTable. SmonVlanStatsControlEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.1.1 |
smonVlanStatsControlIndexA unique arbitrary index for this smonVlanStatsControlEntry. Integer32 .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.1.1.1 |
smonVlanStatsControlDataSourceThe source of data for this set of VLAN statistics.
This object MAY NOT be modified if the associated
smonVlanStatsControlStatus object is equal to active(1).rw DataSource .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.1.1.2 |
smonVlanStatsControlCreateTimeThe value of sysUpTime when this control entry was last
activated. This object allows to a management station to
detect deletion and recreation cycles between polls.ro LastCreateTime (RMON2-MIB) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.1.1.3 |
smonVlanStatsControlOwnerAdministratively assigned named of the owner of this entry.
It usually defines the entity that created this entry and is
therefore using the resources assigned to it, though there is
no enforcement mechanism, nor assurance that rows created are
ever used.rw OwnerString (RMON-MIB) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.1.1.4 |
smonVlanStatsControlStatusThe status of this row.
An entry MAY NOT exist in the active state unless all
objects in the entry have an appropriate value.
If this object is not equal to active(1), all associated
entries in the smonVlanIdStatsTable SHALL be deleted.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.1.1.5 |
smonVlanIdStatsTableContains the VLAN statistics data.
The statistics collected represent a distribution based
on the IEEE 802.1Q VLAN-ID (VID), for each good frame
attributed to the data source for the collection.
This function applies the same rules for attributing frames
to VLAN-based collections. RMON VLAN statistics are collected
after the Ingress Rules defined in section 3.13 of the VLAN
Specification [20] are applied.
It is possible that entries in this table will be
garbage-collected, based on agent resources, and VLAN
configuration. Agents are encouraged to support all 4094
index values and not garbage collect this table. SEQUENCE OF SmonVlanIdStatsEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2 |
smonVlanIdStatsEntryA conceptual row in smonVlanIdStatsTable. SmonVlanIdStatsEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1 |
smonVlanIdStatsIdThe unique identifier of the VLAN monitored for
this specific statistics collection.
Tagged packets match the VID for the range between 1 and 4094.
An external RMON probe MAY detect VID=0 on an Inter Switch
Link, in which case the packet belongs to a VLAN determined by
the PVID of the ingress port. The VLAN to which such a packet
belongs can be determined only by a RMON probe internal to the
switch. Integer32 .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.1 |
smonVlanIdStatsTotalPktsThe total number of packets counted on this VLAN.ro Counter32 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.2 |
smonVlanIdStatsTotalOverflowPktsThe number of times the associated smonVlanIdStatsTotalPkts
counter has overflowed.ro Counter32 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.3 |
smonVlanIdStatsTotalHCPktsThe total number of packets counted on this VLAN.ro Counter64 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.4 |
smonVlanIdStatsTotalOctetsThe total number of octets counted on this VLAN.ro Counter32 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.5 |
smonVlanIdStatsTotalOverflowOctetsThe number of times the associated smonVlanIdStatsTotalOctets
counter has overflowed.ro Counter32 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.6 |
smonVlanIdStatsTotalHCOctetsThe total number of octets counted on this VLAN.ro Counter64 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.7 |
smonVlanIdStatsNUcastPktsThe total number of non-unicast packets counted on this
VLAN.ro Counter32 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.8 |
smonVlanIdStatsNUcastOverflowPktsThe number of times the associated smonVlanIdStatsNUcastPkts
counter has overflowed.ro Counter32 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.9 |
smonVlanIdStatsNUcastHCPktsThe total number of non-unicast packets counted on
this VLAN.ro Counter64 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.10 |
smonVlanIdStatsNUcastOctetsThe total number of non-unicast octets counted on
this VLAN.ro Counter32 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.11 |
smonVlanIdStatsNUcastOverflowOctetsThe number of times the associated
smonVlanIdStatsNUcastOctets counter has overflowed.ro Counter32 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.12 |
smonVlanIdStatsNUcastHCOctetsThe total number of Non-unicast octets counted on
this VLAN.ro Counter64 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.13 |
smonVlanIdStatsCreateTimeThe value of sysUpTime when this entry was last
activated. This object allows to a management station to
detect deletion and recreation cycles between polls.ro LastCreateTime (RMON2-MIB) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.2.1.14 |
smonPrioStatsControlTableControls the setup of priority statistics tables.
The smonPrioStatsControlTable allows configuration of
collections based on the value of the 3-bit user priority
field encoded in the Tag Control Information (TCI) field
according to [19],[20].
Note that this table merely reports priority as encoded in
the VLAN headers, not the priority (if any) given to the
frame for the actual switching purposes. SEQUENCE OF SmonPrioStatsControlEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.3 |
smonPrioStatsControlEntryA conceptual row in the smonPrioStatsControlTable. SmonPrioStatsControlEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.3.1 |
smonPrioStatsControlIndexA unique arbitrary index for this smonPrioStatsControlEntry. Integer32 .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.3.1.1 |
smonPrioStatsControlDataSourceThe source of data for this set of VLAN statistics.
This object MAY NOT be modified if the associated
smonPrioStatsControlStatus object is equal to active(1).rw DataSource .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.3.1.2 |
smonPrioStatsControlCreateTimeThe value of sysUpTime when this entry was created.
This object allows to a management station to
detect deletion and recreation cycles between polls.ro LastCreateTime (RMON2-MIB) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.3.1.3 |
smonPrioStatsControlOwnerAdministratively assigned named of the owner of this entry.
It usually defines the entity that created this entry and is
therefore using the resources assigned to it, though there is
no enforcement mechanism, nor assurance that rows created are
ever used.rw OwnerString (RMON-MIB) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.3.1.4 |
smonPrioStatsControlStatusThe status of this row.
An entry MAY NOT exist in the active state unless all
objects in the entry have an appropriate value.
If this object is not equal to active(1), all associated
entries in the smonPrioStatsTable SHALL be deleted.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.3.1.5 |
smonPrioStatsTableContains the priority statistics. The collections are based
on the value of the 3-bit user priority field encoded in the
Tag Control Information (TCI) field according to [19], [20].
Note that this table merely reports priority as encoded in
the VLAN headers, not the priority (if any) given to the
frame for the actual switching purposes.
No garbage collection is designed for this table, as there
always are at most eight rows per statistical set, and the
low memory requirements do not justify the implementation of
such a mechanism. SEQUENCE OF SmonPrioStatsEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4 |
smonPrioStatsEntryA conceptual row in smonPrioStatsTable. SmonPrioStatsEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4.1 |
smonPrioStatsIdThe unique identifier of the priority level monitored for
this specific statistics collection. Integer32 .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4.1.1 |
smonPrioStatsPktsThe total number of packets counted on
this priority level.ro Counter32 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4.1.2 |
smonPrioStatsOverflowPktsThe number of times the associated smonPrioStatsPkts
counter has overflowed.ro Counter32 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4.1.3 |
smonPrioStatsHCPktsThe total number of packets counted on
this priority level.ro Counter64 UNITS "packets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4.1.4 |
smonPrioStatsOctetsThe total number of octets counted on
this priority level.ro Counter32 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4.1.5 |
smonPrioStatsOverflowOctetsThe number of times the associated smonPrioStatsOctets
counter has overflowed.ro Counter32 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4.1.6 |
smonPrioStatsHCOctetsThe total number of octets counted on
this priority level.ro Counter64 UNITS "octets" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.2.4.1.7 |
portCopyConfig OBJECT IDENTIFIER .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.3 |
portCopyTablePort Copy provides the ability to copy all frames from a
specified source to specified destination within a switch.
Source and destinations MUST be ifEntries, as defined by [22].
One to one, one to many, many to one and many to many source to
destination relationships may be configured.
Applicable counters on the destination will increment for all
packets transiting the port, be it by normal bridging/switching
or due to packet copy.
Note that this table manages no RMON data collection by itself,
and an agent may possibly implement no RMON objects except
objects related to the port copy operation defined by the
portCopyCompliance conformance macro. That allows for a switch
with no other embedded RMON capability to perform port copy
operations to a destination port at which a different external
RMON probe is connected.
One to one, many to one and one to many source to destination
relationships may be configured.
Each row that exists in this table defines such a
relationship. By disabling a row in this table the port copy
relationship no longer exists.
The number of entries and the types of port copies (1-1,
many-1, 1-many) are implementation specific and could
possibly be dynamic due to changing resource availability.
In order to configure a source to destination portCopy
relationship, both source and destination interfaces MUST be
present as an ifEntry in the ifTable and their respective
ifAdminStatus and ifOperStatus values MUST be equal to
'up(1)'. If the value of any of those two objects changes
after the portCopyEntry is activated, portCopyStatus will
transition to 'notReady(3)'.
The capability of an interface to be source or destination of
a port copy operation is described by the 'copySourcePort(0)'
and 'copyDestPort(1)' bits in dataSourceCopyCaps. Those bits
SHOULD be appropriately set by the agent, in order to allow
for a portCopyEntry to be created.
Applicable counters on the destination will increment for all
packets transmitted, be it by normal bridging/switching or
due to packet copy. SEQUENCE OF PortCopyEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.3.1 |
portCopyEntryDescribes a particular port copy entry. PortCopyEntry .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.3.1.1 |
portCopySourceThe ifIndex of the source which will have all packets
redirected to the destination as defined by portCopyDest. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.3.1.1.1 |
portCopyDestDefines the ifIndex destination for the copy operation. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.3.1.1.2 |
portCopyDestDropEventsThe total number of events in which port copy packets were
dropped by the switch at the destination port due to lack of
resources.
Note that this number is not necessarily the number of
packets dropped; it is just the number of times this
condition has been detected.
A single dropped event counter is maintained for each
portCopyDest. Thus all instances associated with a given
portCopyDest will have the same portCopyDestDropEvents
value.ro Counter32 UNITS "events" .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.3.1.1.3 |
portCopyDirectionThis object affects the way traffic is copied from a switch
source port, for the indicated port copy operation.
If this object has the value 'copyRxOnly(1)', then only
traffic received on the indicated source port will be copied
to the indicated destination port.
If this object has the value 'copyTxOnly(2)', then only
traffic transmitted out the indicated source port will be
copied to the indicated destination port.
If this object has the value 'copyBoth(3)', then all traffic
received or transmitted on the indicated source port will be
copied to the indicated destination port.
The creation and deletion of instances of this object is
controlled by the portCopyRowStatus object. Note that there
is no guarantee that changes in the value of this object
performed while the associated portCopyRowStatus object is
equal to active will not cause traffic discontinuities in the
packet stream.rw Enumeration .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.3.1.1.4 |
portCopyStatusDefines the status of the port copy entry.
In order to configure a source to destination portCopy
relationship, both source and destination interfaces MUST be
present as an ifEntry in the ifTable and their respective
ifAdminStatus and ifOperStatus values MUST be equal to
'up(1)'. If the value of any of those two objects changes
after the portCopyEntry is activated, portCopyStatus will
transition to 'notReady(3)'.
The capability of an interface to be source or destination of
a port copy operation is described by the 'copySourcePort(0)'
and 'copyDestPort(1)' bits in dataSourceCopyCaps. Those bits
SHOULD be appropriately set by the agent, in order to allow
for a portCopyEntry to be created.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.3.1.1.5 |
smonRegistrationPoints OBJECT IDENTIFIER .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.4 |
smonVlanDataSource OBJECT IDENTIFIER .1.3.6.1.4.1.3727.20.20.3.1.16.22.1.4.1 |