smonCapabilities An indication of the SMON MIB groups supported by this agent.

dataSourceCapsTable This 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.

dataSourceCapsEntry Entries 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.

dataSourceCapsObject Defines an object that can be a SMON data source or a source or a destination for a port copy operation.

dataSourceRmonCaps General 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.

dataSourceCopyCaps PortCopy 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.

dataSourceCapsIfIndex This 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.

smonVlanStatsControlTable Controls 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.

smonVlanStatsControlEntry A conceptual row in the smonVlanStatsControlTable.

smonVlanStatsControlIndex A unique arbitrary index for this smonVlanStatsControlEntry.

smonVlanStatsControlDataSource The 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).

smonVlanStatsControlCreateTime The 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.

smonVlanStatsControlOwner Administratively 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.

smonVlanStatsControlStatus The 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.

smonVlanIdStatsTable Contains 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.

smonVlanIdStatsEntry A conceptual row in smonVlanIdStatsTable.

smonVlanIdStatsId The 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.

smonVlanIdStatsTotalPkts The total number of packets counted on this VLAN.

smonVlanIdStatsTotalOverflowPkts The number of times the associated smonVlanIdStatsTotalPkts counter has overflowed.

smonVlanIdStatsTotalHCPkts The total number of packets counted on this VLAN.

smonVlanIdStatsTotalOctets The total number of octets counted on this VLAN.

smonVlanIdStatsTotalOverflowOctets The number of times the associated smonVlanIdStatsTotalOctets counter has overflowed.

smonVlanIdStatsTotalHCOctets The total number of octets counted on this VLAN.

smonVlanIdStatsNUcastPkts The total number of non-unicast packets counted on this VLAN.

smonVlanIdStatsNUcastOverflowPkts The number of times the associated smonVlanIdStatsNUcastPkts counter has overflowed.

smonVlanIdStatsNUcastHCPkts The total number of non-unicast packets counted on this VLAN.

smonVlanIdStatsNUcastOctets The total number of non-unicast octets counted on this VLAN.

smonVlanIdStatsNUcastOverflowOctets The number of times the associated smonVlanIdStatsNUcastOctets counter has overflowed.

smonVlanIdStatsNUcastHCOctets The total number of Non-unicast octets counted on this VLAN.

smonVlanIdStatsCreateTime The value of sysUpTime when this entry was last activated. This object allows to a management station to detect deletion and recreation cycles between polls.

smonPrioStatsControlTable Controls 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.

smonPrioStatsControlEntry A conceptual row in the smonPrioStatsControlTable.

smonPrioStatsControlIndex A unique arbitrary index for this smonPrioStatsControlEntry.

smonPrioStatsControlDataSource The 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).

smonPrioStatsControlCreateTime The value of sysUpTime when this entry was created. This object allows to a management station to detect deletion and recreation cycles between polls.

smonPrioStatsControlOwner Administratively 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.

smonPrioStatsControlStatus The 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.

smonPrioStatsTable Contains 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.

smonPrioStatsEntry A conceptual row in smonPrioStatsTable.

smonPrioStatsId The unique identifier of the priority level monitored for this specific statistics collection.

smonPrioStatsPkts The total number of packets counted on this priority level.

smonPrioStatsOverflowPkts The number of times the associated smonPrioStatsPkts counter has overflowed.

smonPrioStatsHCPkts The total number of packets counted on this priority level.

smonPrioStatsOctets The total number of octets counted on this priority level.

smonPrioStatsOverflowOctets The number of times the associated smonPrioStatsOctets counter has overflowed.

smonPrioStatsHCOctets The total number of octets counted on this priority level.

portCopyTable Port 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.

portCopyEntry Describes a particular port copy entry.

portCopySource The ifIndex of the source which will have all packets redirected to the destination as defined by portCopyDest.

portCopyDest Defines the ifIndex destination for the copy operation.

portCopyDestDropEvents The 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.

portCopyDirection This 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.

portCopyStatus Defines 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.

smonMIBCompliance Describes the requirements for full conformance with the SMON MIB

smonMIBVlanStatsCompliance Describes the requirements for conformance with the SMON MIB with support for VLAN Statistics. Mandatory for a SMON probe in environment where IEEE 802.1Q bridging is implemented.

smonMIBPrioStatsCompliance Describes the requirements for conformance with the SMON MIB with support for priority level Statistics. Mandatory for a SMON probe in a environment where IEEE 802.1p priority-switching is implemented.

portCopyCompliance Describes the requirements for conformance with the port copy functionality defined by the SMON MIB

dataSourceCapsGroup Defines the objects that describe the capabilities of RMON data sources.

smonVlanStatsGroup Defines the switch monitoring specific statistics - per VLAN Id on interfaces of 10MB or less.

smonPrioStatsGroup Defines the switch monitoring specific statistics - per VLAN Id on interface.

smonHcTo100mbGroup Defines the additional high capacity statistics needed to be kept on interfaces with ifSpeed greater than 10MB/sec and less than or equal to 100MB/sec.

smonHc100mbPlusGroup Defines the additional high capacity statistics needed to be kept on interfaces with ifSpeed of more than 100MB/sec. These statistics MUST also be kept on smonDataSources of type VLAN or entPhysicalEntry.

hcVlanTo100mbGroup Defines the additional high capacity VLAN statistics needed to be kept on interfaces with ifSpeed greater than 10MB/sec and less than or equal to 100MB/sec.

hcVlan100mbPlusGroup Defines the additional high capacity VLAN statistics needed to be kept on interfaces with ifSpeed of more than 100MB/sec.  These statistics MUST also be kept on smonDataSources of type VLAN or entPhysicalEntry.

hcPrioTo100mbGroup Defines the additional high capacity VLAN priority statistics needed to be kept on interfaces with ifSpeed of greater than 10MB/sec and less than or equal to 100MB/sec.

hcPrio100mbPlusGroup Defines the additional high capacity VLAN priority statistics needed to be kept on interfaces with ifSpeed of greater than 100MB/sec. These statistics MUST also be kept on smonDataSources of type VLAN or entPhysicalEntry.

smonVlanStatsExtGroup Defines the switch monitoring specific statistics for systems capable of counting non-unicast octets for a given dataSource (as described in the dataSourceRmonCaps object).

smonInformationGroup An indication of the SMON capabilities supported by this agent.

portCopyConfigGroup Defines the control objects for copy port operations.