SMON2-MIB

All MIBs › SMON2-MIB

Category: Ethernet and LAN Management, Network Performance Monitoring

Description: Provides SMON Switch Monitoring v2 objects for per-port and per-VLAN traffic statistics on managed switches.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

What Is SMON2-MIB?

This is the SMON (Switch Monitoring) version 2 MIB, a vendor extension (object prefix xs-) providing per-port and per-VLAN traffic statistics on managed Ethernet switches, building on the concepts of the RMON/SMON family of standards. It exposes resource allocation controls and a Host Top-N mechanism (xsHostTopNControlTable) that lets a management station request ranked lists of top-talking hosts on a port or VLAN over a specified duration. Its monitoring value is squarely on traffic/performance analysis: administrators use the Host Top-N controls to identify which hosts are generating the most traffic on a switch, revealing bandwidth hogs, potential broadcast storms, or unexpected traffic patterns without needing packet capture. It is built on the SMON/RMON conceptual model (xsSmonResourceAllocation reflects RMON-style resource management) and is meant to complement standard RMON MIBs. It is deployed on managed Ethernet switches, in enterprise or carrier environments, that support embedded RMON/SMON-style traffic analysis. Engineers implementing or auditing this functionality typically reference the SMON2-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in SMON2-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

vendor-neutral SMON-based managed Ethernet switch

Monitoring Examples

An administrator would configure a xsHostTopNControlTable/xsHostTopNControlEntry row, setting xsHostTopNControlDuration and xsHostTopNControlRateBase, then poll xsHostTopNControlGrantedSize versus xsHostTopNControlRequestedSize to confirm the switch granted the requested resources for the Top-N host report. If xsHostTopNControlTimeRemaining shows the study is still running while granted size is much smaller than requested, that indicates the switch is resource-constrained and cannot service the full Top-N request, hinting at oversubscribed monitoring resources on that switch.

What Can Be Monitored

Host Top-N ranked traffic list
per-port traffic statistics
per-VLAN traffic statistics
Top-N study duration and remaining time
monitoring resource allocation

Imported Objects

From APPLIC-MIB

smon	OBJECT-IDENTITY

From RMON-MIB

OwnerString

From RMON2-MIB

DataSource
LastCreateTime
TimeFilter
ZeroBasedCounter32
hlMatrixControlIndex	OBJECT-TYPE
protocolDirLocalIndex	OBJECT-TYPE

From SNMPv2-SMI

BITS
Counter32
Gauge32
Integer32
IpAddress
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DisplayString
RowStatus
TimeStamp

How to Use in IPNetwork Monitor

Example using xsSubnetControlInserts OID:

Select a device implementing SMON2-MIB as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type xsSubnetControlInserts into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The number of times an xsSubnet entry has been inserted into the xsSubnet table. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
drSmon	1.3.6.1.4.1.81.30.4
drSmonActiveApplications	1.3.6.1.4.1.81.30.4.4
drSmonActiveApplicationsEntry	1.3.6.1.4.1.81.30.4.4.1.1		not-accessible	The entry for the drSmonActiveApplicationsTable. A set of entries exist for each module. For each active application, a global counter indicates the number of packets in the specific application monitored by the module. Entries exist only for 'active' applications.
I32 drSmonActiveApplicationsModuleID	1.3.6.1.4.1.81.30.4.4.1.1.1	Integer32	not-accessible	The module group number (=slot number). Used as index.
C32 drSmonActiveApplicationsPkts	1.3.6.1.4.1.81.30.4.4.1.1.4	Counter32	read-only	The number of packets of the specified application monitored by the probe.
I32 drSmonActiveApplicationsSubType	1.3.6.1.4.1.81.30.4.4.1.1.3	Integer32	not-accessible	The application's sub-type value depends on the value of the type: Type sub-type value =========== ============== ethertype(1) 1 - Sum of all IP traffic 2 - ARP traffic ipProtocol(2) 1 - ICMP traffic 2 - OSPF traffic 3 - Sum of all UDP traffic 4 - Sum of all TCP traffic 5 - VRRP traffic udpProtocol(3) - The SubType is the UDP port number tcpProtocol(4) - The SubType is the TCP port number
drSmonActiveApplicationsTable	1.3.6.1.4.1.81.30.4.4.1		not-accessible	This table contain the 'active applications' or protocols from all the protocols the modules can detect. 'Activity' is determined and reported by each module, in a sub-table of this table. The table contain entries only for 'Active' protocols. For each active application, there is a global counter indicates the number of packets in the specific application monitored by a module.
INT drSmonActiveApplicationsType	1.3.6.1.4.1.81.30.4.4.1.1.2	INTEGER	not-accessible	The major type of the application. Note that TCP and UDP are assumed to be over IP.
drSmonConfiguration	1.3.6.1.4.1.81.30.4.1
drSmonControlEntry	1.3.6.1.4.1.81.30.4.1.1.1		not-accessible	A conceptual row in the drSmonControlTable. Configures the SMON-2 operation for a particular module in the device. The row is statically created by the agent if the module is inserted.
I32 drSmonControlMatrixCols	1.3.6.1.4.1.81.30.4.1.1.1.6	Integer32	read-only	The number of columns in the device entity matrix/table for the current counting mode. Applicable to counting mode capable of supporting one or more of the following statistics: nlHost, nlMatrix, alHost and alMatrix. For modes not supporting entity (host, subnet, or RNR group) tables/ matrices, this counter will be 0
I32 drSmonControlMatrixRows	1.3.6.1.4.1.81.30.4.1.1.1.5	Integer32	read-only	The number of rows in the device entity matrix/table for the current counting mode. Applicable to counting mode capable of supporting one or more of the following statistics: nlHost, nlMatrix, alHost and alMatrix. For modes not supporting entity (host, subnet, or RNR group) tables/ matrices, this counter will be 0
I32 drSmonControlModuleID	1.3.6.1.4.1.81.30.4.1.1.1.1	Integer32	not-accessible	The module group number (=slot number). Used as index.
TIK drSmonControlProtocolDistStatsTimeStamp	1.3.6.1.4.1.81.30.4.1.1.1.4	TimeTicks	read-only	This attribute contains the value of sysUpTime at the time protocolDistStats counters were determined by the agent.
C32 drSmonControlRoutedPackets	1.3.6.1.4.1.81.30.4.1.1.1.3	Counter32	read-only	The number of packets routed by the 3rd-layer forwarding hardware of this module.
INT drSmonControlRowAddressAutoLearnMode	1.3.6.1.4.1.81.30.4.1.1.1.2	INTEGER	read-write	Controls whether the embedded SMON application populates the matrix Rows with automatically-learned addresses in addition to those specified in the filter table. enable(1) - turns auto-learn on disable(2) - turns auto-learn off This toggle is meaningless in modes other than nl/al matrix.
drSmonControlTable	1.3.6.1.4.1.81.30.4.1.1		not-accessible	A table configuring SMON-2 operation for each router module in a device.
IP drSmonEntityPlacementAddress	1.3.6.1.4.1.81.30.4.1.2.1.3	IpAddress	read-only	The IP address of an entity to explicitly monitor
drSmonEntityPlacementEntry	1.3.6.1.4.1.81.30.4.1.2.1		not-accessible	A conceptual row in the drSmonEntityPlacementTable. Reports the index of a entity in the device's counter marix/table. Reports the creator of this entity - filter table or device's internal auto-learn process.
I32 drSmonEntityPlacementIndex	1.3.6.1.4.1.81.30.4.1.2.1.2	Integer32	not-accessible	The placment index of the particular entity. The index determines the position of the entity in the counter matrix/table. Example: For a matrix of A rows x B columns and index i: If i
IP drSmonEntityPlacementMask	1.3.6.1.4.1.81.30.4.1.2.1.4	IpAddress	read-only	The subnet mask of an entity. The value 255.255.255.255 signifies that this entity is a host.
I32 drSmonEntityPlacementModuleID	1.3.6.1.4.1.81.30.4.1.2.1.1	Integer32	not-accessible	The module group number (=slot number). Used as index.
drSmonEntityPlacementTable	1.3.6.1.4.1.81.30.4.1.2		not-accessible	A table containging a set of tables. Each table reports the placment of entities in the counter matrix/table of a particular module. Entities could be IP hosts, IP subnets, or other 3rd layer groups specified in IP-address/SubnetMask format, for which the device is capable of assigning an entry in its counter matrix/table.
INT drSmonEntityPlacementType	1.3.6.1.4.1.81.30.4.1.2.1.5	INTEGER	read-only	The Type of this entity: empty(1) - Contains no relevant information. Not yet allocated to a specific entity. autoLearn(2) - The entity was learned by the auto-learn process of the device. filter(3) - The entity was created by a relevant filter entry in the filter table.
drSmonFilter	1.3.6.1.4.1.81.30.4.3
IP drSmonFilterAddress	1.3.6.1.4.1.81.30.4.3.1.1.3	IpAddress	read-create	The IP address of a host or subnet to explicitly monitor
drSmonFilterEntry	1.3.6.1.4.1.81.30.4.3.1.1		not-accessible	A conceptual row in the drSmonFilterTable. Configures a host or subnet to monitor in a particular module, at a particular row or column. Typically, the NMS application conifgures these entries.
I32 drSmonFilterIndex	1.3.6.1.4.1.81.30.4.3.1.1.2	Integer32	not-accessible	The index of the particular host/subnet. The index determines the position of the host/subnet in the counter matrix. Example: For a matrix of A rows x B columns and index i: If i
IP drSmonFilterMask	1.3.6.1.4.1.81.30.4.3.1.1.4	IpAddress	read-create	The Mask of a host or subnet to explicitly monitor. The value 255.255.255.255 signifies that this entry is a host entry.
I32 drSmonFilterModuleID	1.3.6.1.4.1.81.30.4.3.1.1.1	Integer32	not-accessible	The module group number (=slot number). Used as index.
ROW drSmonFilterStatus	1.3.6.1.4.1.81.30.4.3.1.1.5	RowStatus	read-create	The status of the row, as per SMIv2 (RFC1903). The row is in read-only mode when the status is set to active(1). Only active rows are used as filters.
drSmonFilterTable	1.3.6.1.4.1.81.30.4.3.1		not-accessible	A table containging a set of tables. Each table configure hosts and subnets to explicitly monitor in a particular module.
drSmonProtocolDir	1.3.6.1.4.1.81.30.4.2
INT drSmonProtocolDirAddressMapConfig	1.3.6.1.4.1.81.30.4.2.2.1.7	INTEGER	read-create	This object describes and configures the probe's support for address mapping for this protocol. Same as RFC 2021, but for a particular module.
STR drSmonProtocolDirDescr	1.3.6.1.4.1.81.30.4.2.2.1.5	DisplayString	read-create	A textual description of the protocol encapsulation. Same as RFC 2021, but for a particular module.
drSmonProtocolDirEntry	1.3.6.1.4.1.81.30.4.2.2.1		not-accessible	A conceptual row in the drSmonProtocolDirTable. Represent a protocol to monitor on a particulat module. All fields except for drSmonProtocolDirModuleID have the same function as in RFC 2021 protocolDirTable. An example of the indexing of this entry is drSmonProtocolDirLocalIndex.3.8.0.0.0.1.0.0.8.0.2.0.0, which is a protocol for module 3 with the encoding of a length of 8, followed by 8 subids encoding the drSmonProtocolDirID of 1.2048, followed by a length of 2 and the 2 subids encoding zero-valued parameters.
INT drSmonProtocolDirHostConfig	1.3.6.1.4.1.81.30.4.2.2.1.8	INTEGER	read-create	This object describes and configures the probe's support for the network layer and application layer host tables for this protocol. Same as RFC 2021, but for a particular module.
OCT drSmonProtocolDirID	1.3.6.1.4.1.81.30.4.2.2.1.2	OCTET STRING	not-accessible	A unique identifier for a particular protocol. same as RFC 2021, but for a particular module.
drSmonProtocolDirLCEntry	1.3.6.1.4.1.81.30.4.2.1.1		not-accessible	A conceptual row in the drSmonProtocolDirLastChangeTable. Contains information for a particular module.
TIM drSmonProtocolDirLCLastChange	1.3.6.1.4.1.81.30.4.2.1.1.2	TimeStamp	read-only	Same function as RFC 2021 protocolDirLastChange, but for a particular module.
I32 drSmonProtocolDirLCModuleID	1.3.6.1.4.1.81.30.4.2.1.1.1	Integer32	not-accessible	The module group number (=slot number). Used as index.
drSmonProtocolDirLCTable	1.3.6.1.4.1.81.30.4.2.1		not-accessible	A table with protocolDirLastChange per module.
I32 drSmonProtocolDirLocalIndex	1.3.6.1.4.1.81.30.4.2.2.1.4	Integer32	read-only	The locally arbitrary, but unique identifier associated with this drSmonProtocolDir entry. Same as RFC 2021, but for a particular module.
INT drSmonProtocolDirMatrixConfig	1.3.6.1.4.1.81.30.4.2.2.1.9	INTEGER	read-create	This object describes and configures the probe's support for the network layer and application layer matrix tables for this protocol. Same as RFC 2021, but for a particular module.
I32 drSmonProtocolDirModuleID	1.3.6.1.4.1.81.30.4.2.2.1.1	Integer32	not-accessible	The module group number (=slot number). Used as index.
STR drSmonProtocolDirOwner	1.3.6.1.4.1.81.30.4.2.2.1.10	OwnerString	read-create	The entity that configured this entry and is therefore using the resources assigned to it.
OCT drSmonProtocolDirParameters	1.3.6.1.4.1.81.30.4.2.2.1.3	OCTET STRING	not-accessible	A set of parameters for the associated drSmonProtocolDirID. Same as RFC 2021, but for a particular module.
ROW drSmonProtocolDirStatus	1.3.6.1.4.1.81.30.4.2.2.1.11	RowStatus	read-create	The status of this protocol directory entry. Same as RFC 2021, but for a particular module.
drSmonProtocolDirTable	1.3.6.1.4.1.81.30.4.2.2		not-accessible	This table contain a set of protocolDirTables. Each protocolDirTable lists the protocols that a particular module has the capability to decode and count. There is one entry in the per-module table for each such protocol. These protocols represent different network layer, transport layer, and higher-layer protocols.
BIT drSmonProtocolDirType	1.3.6.1.4.1.81.30.4.2.2.1.6	Bits	read-only	This object describes 2 attributes of this protocol directory entry. Same as RFC 2021, but for a particular module.
xsActiveApplications	1.3.6.1.4.1.81.30.2.9
OCT xsActiveApplicationsBitMask	1.3.6.1.4.1.81.30.2.9.1	OCTET STRING	read-only	The Active Applications bit mask is representing every active application from the first 1024 'well defined' applications. Each application is represented by a single bit in the string. Application number 1 is represented by the first bit in the string. Bit value '1' means, the protocol is active. Bit value '0' means, the protocol is inactive. For example the FTP data application, assigned as number 20. If the FTP application is active, then the bit number 20 will be set to '1'.
xsActiveApplicationsEntry	1.3.6.1.4.1.81.30.2.9.2.1		not-accessible	The entry for the xsActiveApplicationsTable. For each active application, there is a global counter indicates the number of packets in the specific application monitored by the probe.
I32 xsActiveApplicationsIndex	1.3.6.1.4.1.81.30.2.9.2.1.1	Integer32	not-accessible	The number of the application.
C32 xsActiveApplicationsPkts	1.3.6.1.4.1.81.30.2.9.2.1.2	Counter32	read-only	The number of packets of the specified application, monitored by the probe.
xsActiveApplicationsTable	1.3.6.1.4.1.81.30.2.9.2		not-accessible	This table contain the 'active applications' from the 1024 'well defined' applications. For each active application, there is a global counter indicates the number of packets in the specific application monitored by the probe.
xsFilter	1.3.6.1.4.1.81.30.2.3
xsHostFilterEntry	1.3.6.1.4.1.81.30.2.3.1.1		not-accessible	An entry in the filter table.
OCT xsHostFilterIpAddress	1.3.6.1.4.1.81.30.2.3.1.1.2	OCTET STRING	read-write	The IP address of a host monitored via the Interface. In case the filter type is not ipHost(1), the value of this entry is not relevant and should return the null string.
OCT xsHostFilterIpMask	1.3.6.1.4.1.81.30.2.3.1.1.4	OCTET STRING	read-write	The mask of a IP subnet monitored via the Interface. In case the filter type is not ipSubnet(2), the value of this entry is not relevant and should return the null string.
OCT xsHostFilterIpSubnet	1.3.6.1.4.1.81.30.2.3.1.1.3	OCTET STRING	read-write	The address of a IP subnet monitored via the Interface. In case the filter type is not ipSubnet(2), the value of this entry is not relevant and should return the null string.
OCT xsHostFilterIpxAddress	1.3.6.1.4.1.81.30.2.3.1.1.5	OCTET STRING	read-write	The address of a IPX monitored via the Interface. In case the filter type is not ipxNet(3), the value of this entry is not relevant and should return the null string.
INT xsHostFilterStatus	1.3.6.1.4.1.81.30.2.3.1.1.6	INTEGER	read-write	The status of this xsHostFilter entry.
xsHostFilterTable	1.3.6.1.4.1.81.30.2.3.1		not-accessible	A list of network layer addresses hosts to be monitored through an interface by the RMON II MIB hosts group. The OID of this table is a legitimate value for the hlMatrixControlDataSource, and for LANNET's Groups xsSubnetControlDataSource, xsSubnetMatrixControlDataSource,
INT xsHostFilterTableClear	1.3.6.1.4.1.81.30.2.3.2	INTEGER	read-write	Setting the value of this item to clear(2) causes the agent to clear all entries in the HostFilterTable.
INT xsHostFilterType	1.3.6.1.4.1.81.30.2.3.1.1.1	INTEGER	read-write	Indicates the type of the filter defined by this entry.
xsHostTopN	1.3.6.1.4.1.81.30.2.2
I32 xsHostTopNControlDuration	1.3.6.1.4.1.81.30.2.2.1.1.5	Integer32	read-only	The number of seconds that this report has collected during the last sampling interval. When the associated HostTopNControlTimeRemaining object is set, this object shall be set by the probe to the same value and shall not be modified until the next time the xsHostTopNControlTimeRemaining is set. This value shall be zero if no reports have been requested for this xsHostTopNControlEntry.
xsHostTopNControlEntry	1.3.6.1.4.1.81.30.2.2.1.1		not-accessible	A conceptual row in the xsHostTopNControlTable. An example of the indexing of this table is xsHostTopNControlDuration.3
I32 xsHostTopNControlGrantedSize	1.3.6.1.4.1.81.30.2.2.1.1.7	Integer32	read-only	The maximum number of host entries in this report. When the associated xsHostTopNControlRequestedSize object is created or modified, the probe should set this object as closely to the requested value as is possible for the particular implementation and available resources. The probe must not lower this value except as a result of a set to the associated xsHostTopNControlRequestedSize object. If the value of xsHostTopNControlRateBase is equal to xsHostTopNPkts, when the next topN report is generated, matrix entries with the highest value of xsHostTopNPktRate shall be placed in this table in decreasing order of this rate until there is no more room or until there are no more matrix entries. If the value of xsHostTopNControlRateBase is equal to xsHostTopNOctets, when the next topN report is generated, matrix entries with the highest value of xsHostTopNOctetRate shall be placed in this table in decreasing order of this rate until there is no more room or until there are no more matrix entries. It is an implementation-specific matter how entries with the same value of xsHostTopNPktRate or xsHostTopNOctetRate are sorted. It is also an implementation-specific matter as to whether or not zero-valued entries are available.
I32 xsHostTopNControlHostIndex	1.3.6.1.4.1.81.30.2.2.1.1.2	Integer32	read-create	The nlHost table for which a top N report will be prepared on behalf of this entry. The nlHost table is identified by the value of the hlHostControlIndex for that table - that value is used here to identify the particular table. This object may not be modified if the associated xsHostTopNControlStatus object is equal to active(1).
I32 xsHostTopNControlIndex	1.3.6.1.4.1.81.30.2.2.1.1.1	Integer32	not-accessible	An index that uniquely identifies an entry in the xsHostTopNControlTable. Each such entry defines one top N report prepared for one interface.
STR xsHostTopNControlOwner	1.3.6.1.4.1.81.30.2.2.1.1.9	OwnerString	read-create	The entity that configured this entry and is therefore using the resources assigned to it.
INT xsHostTopNControlRateBase	1.3.6.1.4.1.81.30.2.2.1.1.3	INTEGER	read-create	The variable for each nlHost entry that the xsHostTopNEntries are sorted by. This object may not be modified if the associated xsHostTopNControlStatus object is equal to active(1).
I32 xsHostTopNControlRequestedSize	1.3.6.1.4.1.81.30.2.2.1.1.6	Integer32	read-create	The maximum number of host entries requested for this report. When this object is created or modified, the probe should set xsHostTopNControlGrantedSize as closely to this object as is possible for the particular probe implementation and available resources.
TIM xsHostTopNControlStartTime	1.3.6.1.4.1.81.30.2.2.1.1.8	TimeStamp	read-only	The value of sysUpTime when this top N report was last started. In other words, this is the time that the associated xsHostTopNControlTimeRemaining object was modified to start the requested report or the time the report was last automatically (re)started. This object may be used by the management station to determine if a report was missed or not.
ROW xsHostTopNControlStatus	1.3.6.1.4.1.81.30.2.2.1.1.10	RowStatus	read-create	The status of this xsHostTopNControlEntry. 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 xsHostTopNTable shall be deleted by the agent.
xsHostTopNControlTable	1.3.6.1.4.1.81.30.2.2.1		not-accessible	A set of parameters that control the creation of a report of the top N network layer host entries according to a selected metric.
I32 xsHostTopNControlTimeRemaining	1.3.6.1.4.1.81.30.2.2.1.1.4	Integer32	read-create	The number of seconds left in the report currently being collected. When this object is modified by the management station, a new collection is started, possibly aborting a currently running report. The new value is used as the requested duration of this report, which is loaded into the associated xsHostTopNControlDuration object. When this object is set to a non-zero value, any associated xsHostTopNEntries shall be made inaccessible by the monitor. While the value of this object is non-zero, it decrements by one per second until it reaches zero. During this time, all associated xsHostTopNEntries shall remain inaccessible. At the time that this object decrements to zero, the report is made accessible in the xsHostTopNTable. Thus, the xsHostTopN table needs to be created only at the end of the collection interval.
xsHostTopNEntry	1.3.6.1.4.1.81.30.2.2.2.1		not-accessible	A conceptual row in the xsHostTopNTable. The xsHostTopNControlIndex value in the index identifies the xsHostTopNControlEntry on whose behalf this entry was created. An example of the indexing of this table is xsHostTopNPktRate.3.10
I32 xsHostTopNIndex	1.3.6.1.4.1.81.30.2.2.2.1.1	Integer32	not-accessible	An index that uniquely identifies an entry in the xsHostTopNTable among those in the same report. This index is between 1 and N, where N is the number of entries in this report. If the value of xsHostTopNControlRateBase is equal to xsHostTopNInPkts, increasing values of xsHostTopNIndex shall be assigned to entries with decreasing values of xsHostTopNRate until index N is assigned or there are no more xsHostTopNEntries.
OCT xsHostTopNNlAddress	1.3.6.1.4.1.81.30.2.2.2.1.3	OCTET STRING	read-only	The network layer address of the host in this collection. This is represented as an octet string with specific semantics and length as identified by the associated xsHostTopN ProtocolDirLocalIndex. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
I32 xsHostTopNProtocolDirLocalIndex	1.3.6.1.4.1.81.30.2.2.2.1.2	Integer32	read-only	The protocolDirLocalIndex of the network layer protocol of this entry's network address.
G32 xsHostTopNRate	1.3.6.1.4.1.81.30.2.2.2.1.4	Gauge32	read-only	The number of packets seen from the source host to the destination host during this sampling interval, counted using the rules for counting the xsHostPkts object. If the value of xsHostTopNControlRateBase is xsHostTopNPkts, this variable will be used to sort this report.
xsHostTopNTable	1.3.6.1.4.1.81.30.2.2.2		not-accessible	A set of statistics for those network layer hosts that have counted the highest number of octets or packets.
TIK xsNlHostTimeStamp	1.3.6.1.4.1.81.30.2.7	TimeTicks	read-only	This attribute contains the value of sysUpTime at the time nlHost counters were calculated.
I32 xsNumberOfProtocols	1.3.6.1.4.1.81.30.2.5	Integer32	read-only	This attribute contains the number of protocols in the protocolDirTable.
TIK xsProtocolDistStatsTimeStamp	1.3.6.1.4.1.81.30.2.6	TimeTicks	read-only	This attribute contains the value of sysUpTime at the time protocolDistStats counters were calculated.
xsSmon	1.3.6.1.4.1.81.30.2
OCT xsSmonResourceAllocation	1.3.6.1.4.1.81.30.2.1	OCTET STRING	read-only	This item is used to define which SMON applications are using resources at the agent. When the console performs smon application it should read this item in order to know which of the SMON applications are available in this agent. When there is a value of 0 (zero) in the relevant bit it means that the associated application is not running on the agent, When there is a value of 1 (one) in the relevant bit it means that the associated application is suported. D0 - statistics D1 - history D2 - alarm D3 - host D4 - hostTopN D5 - matrix D6 - filter D7 - capture D8 - event D9 - tokenRing D10 - protocolDir D11 -protocolDist D12 -addressMap D13 -nlHost D14 - nlMatrix D15 -alHost D16 -alMatrix D17 -usrHistory D18 - probeConfig D19 -port D20 - portTopN D21 - subnet D22 - subnetMatrix D23 - vlan D24 - vlanMatrix D25 - nlHostTopN D26 - portHistory
INT xsSmonStatus	1.3.6.1.4.1.81.30.2.10	INTEGER	read-write	This item is set to value operate(1) when SMON is running on the probe and paused(2) when SMON is paused. The status is in operate(1) value whenever there is a valid control or when a Console set this item to operate(1). The status is in paused(2) value when there is no valid control and the Console didnot set this item to operate(1).
xsSubnet	1.3.6.1.4.1.81.30.2.4
OCT xsSubnetAddress	1.3.6.1.4.1.81.30.2.4.2.1.2	OCTET STRING	not-accessible	The subnetwork address for this xsSubnetEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
DAT xsSubnetControlDataSource	1.3.6.1.4.1.81.30.2.4.1.1.2	DataSource	read-create	The source of data for the associated Subnet tables. The statistics in this group reflect all packets on the local network segment attached to the identified interface.Mostly this instance will be the xsHostFilterTable. This object may not be modified if the associated xsSubnetControlStatus object is equal to active(1).
C32 xsSubnetControlDeletes	1.3.6.1.4.1.81.30.2.4.1.1.4	Counter32	read-only	The number of times an xsSubnet entry has been deleted from the xsSubnet table (for any reason). If an entry is deleted, then inserted, and then deleted, this counter will be incremented by 2. To allow for efficient implementation strategies, agents may delay updating this object for short periods of time. For example, an implementation strategy may allow internal data structures to differ from those visible via SNMP for short periods of time. This counter may reflect the internal data structures for those short periods of time. Note that the table size can be determined by subtracting xsSubnetControlDeletes from xsSubnetControlInserts.
xsSubnetControlEntry	1.3.6.1.4.1.81.30.2.4.1.1		not-accessible	A conceptual row in the sSubnetControlTable. An example of the indexing of this entry is xsSubnetControlDataSource.1
I32 xsSubnetControlIndex	1.3.6.1.4.1.81.30.2.4.1.1.1	Integer32	not-accessible	An index that uniquely identifies an entry in the xsSubnetControlTable. Each such entry defines a function that collects statistics on a particular interface and places statistics about them in the xsSubnetTable, on behalf of this xsSubnetControlEntry.
C32 xsSubnetControlInsertsEx	1.3.6.1.4.1.81.30.2.4.1.1.3	Counter32	read-only	The number of times an xsSubnet entry has been inserted into the xsSubnet table. If an entry is inserted, then deleted, and then inserted, this counter will be incremented by 2. To allow for efficient implementation strategies, agents may delay updating this object for short periods of time. For example, an implementation strategy may allow internal data structures to differ from those visible via SNMP for short periods of time. This counter may reflect the internal data structures for those short periods of time. Note that the table size can be determined by subtracting xsSubnetControlDeletes from xsSubnetControlInserts.
I32 xsSubnetControlMaxDesiredEntries	1.3.6.1.4.1.81.30.2.4.1.1.5	Integer32	read-create	The maximum number of entries that are desired in the xsSubnetable on behalf of this control entry. The probe will not create more than this number of associated entries in the table, but may choose to create fewer entries in this table for any reason including the lack of resources. If this object is set to a value less than the current number of entries, enough entries are chosen in an implementation - dependent manner and deleted so that the number of entries in the table equals the value of this object. If this value is set to -1, the probe may create any number of entries in this table. If the associated xsSubnetControlStatus object is equal to `active', this object may not be modified. This object may be used to control how resources are allocated on the probe for the various RMON functions.
STR xsSubnetControlOwner	1.3.6.1.4.1.81.30.2.4.1.1.6	OwnerString	read-create	The entity that configured this entry and is therefore using the resources assigned to it.
ROW xsSubnetControlStatus	1.3.6.1.4.1.81.30.2.4.1.1.7	RowStatus	read-create	The status of this xsSubnetControlEntry. 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 nlHostTable and alHostTable shall be deleted.
xsSubnetControlTable	1.3.6.1.4.1.81.30.2.4.1		not-accessible	A list of higher layer (i.e. non-MAC) Subnets\Networks table control entries. These entries will enable the collection of the network and application level subnets tables indexed by subnetwork addresses. Entries in the xsSubnetTable will be created on behalf of each entry in this table. Implementations are encouraged to add an entry per monitored interface upon initialization so that a default collection of subnet statistics is available.
LAS xsSubnetCreateTime	1.3.6.1.4.1.81.30.2.4.2.1.6	LastCreateTime	read-only	The value of sysUpTime when this entry was last activated. This can be used by the management station to ensure that the entry has not been deleted and recreated between polls.
xsSubnetEntry	1.3.6.1.4.1.81.30.2.4.2.1		not-accessible	A conceptual row in the xsSubnetTable. The xsSubnetControlIndex value in the index identifies the xsSubnetControlEntry on whose behalf this entry was created. The first protocolDirLocalIndex value in the index identifies the network layer protocol the second protocolLocalDirIndex identifies the protocol (network or application layer protocol) to be monitored on that of the xsSubnetAddress. An example of the indexing of this entry is xsSubnetOutPkts.1.783495.18.4.128.2.6.6.4.255.255.255.0.18.This Index indexes The total out IP packets of an Ip Subnet
NUM xsSubnetInPkts	1.3.6.1.4.1.81.30.2.4.2.1.4	ZeroBasedCounter32	read-only	The number of packets without errors transmitted to this subnetwork address since it was added to the xsSubnetTable. Note that this is the number of link-layer packets, so if a single network-layer packet is fragmented into several link-layer frames, this counter is incremented several times.
OCT xsSubnetMask	1.3.6.1.4.1.81.30.2.4.2.1.3	OCTET STRING	not-accessible	The subnetwork mask for this xsSubnetEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
DAT xsSubnetMatrixControlDataSource	1.3.6.1.4.1.81.30.2.4.3.1.2	DataSource	read-create	The source of the data for the associated matrix tables. The statistics in this group reflect all packets on the local network segment attached to the identified interface.Mostly this instance will be the xsHostFilterTable. This object may not be modified if the associated xsSubnetControlStatus object is equal to active(1).
C32 xsSubnetMatrixControlDeletes	1.3.6.1.4.1.81.30.2.4.3.1.5	Counter32	read-only	The number of times an subnetMatrix entry has been deleted from the subnetMatrix tables (for any reason). If an entry is deleted, then inserted, and then deleted, this counter will be incremented by 2. The deletion of a conversation from both the xsSubnetMatrixSDTable and xsSubnetMatrixDSTable shall be counted as two deletions (even though every deletion from one table must be accompanied by a deletion from the other). To allow for efficient implementation strategies, agents may delay updating this object for short periods of time. For example, an implementation strategy may allow internal data structures to differ from those visible via SNMP for short periods of time. This counter may reflect the internal data structures for those short periods of time. Note that the table size can be determined by subtracting xsSubnetMatrixControlNlDeletes from xsSubnetMatrixControlNlInserts.
xsSubnetMatrixControlEntry	1.3.6.1.4.1.81.30.2.4.3.1		not-accessible	A conceptual row in the xsSubnetMatrixControlTable. An example of indexing of this entry is xsSubnetMatrixControDataSource.1
I32 xsSubnetMatrixControlIndex	1.3.6.1.4.1.81.30.2.4.3.1.1	Integer32	not-accessible	An index that uniquely identifies an entry in the xsSubnetMatrixControlTable. Each such entry defines a function that discovers conversations on a particular interface and places statistics about them in the xsSubnetMatrixSDTable and the xsSubnetMatrixDSTable, on behalf of this xsSubnetMatrixControlEntry.
C32 xsSubnetMatrixControlInserts	1.3.6.1.4.1.81.30.2.4.3.1.4	Counter32	read-only	The number of times an subnetMatrix entry has been inserted into the subnetMatrix tables. If an entry is inserted, then deleted, and then inserted, this counter will be incremented by 2. The addition of a conversation into both the xsSubnetMatrixSDTable and xsSubnetMatrixDSTable shall be counted as two insertions (even though every addition into one table must be accompanied by an insertion into the other).To allow for efficient implementation strategies, agents may delay updating this object for short periods of time. For example, an implementation strategy may allow internal data structures to differ from those visible via SNMP for short periods of time. This counter may reflect the internal data structures for those short periods of time. Note that the sum of then xsSubnetMatrixSDTable and xsSubnetMatrixDSTable sizes can be determined by subtracting xsSubnetMatrixControlNlDeletes from xsSubnetMatrixControlNlInserts.
I32 xsSubnetMatrixControlMaxDesiredEntries	1.3.6.1.4.1.81.30.2.4.3.1.6	Integer32	read-create	The maximum number of entries that are desired in the subnetMatrix tables on behalf of this control entry. The probe will not create more than this number of associated entries in the table, but may choose to create fewer entries in this table for any reason including the lack of resources. If this object is set to a value less than the current number of entries, enough entries are chosen in an implementation-dependent manner and deleted so that the number of entries in the table equals the value of this object. If this value is set to -1, the probe may create any number of entries in this table. If the associated xsSubnetMatrixControlStatus object is equal to `active', this object may not be modified. This object may be used to control how resources are allocated on the probe for the various RMON functions.
STR xsSubnetMatrixControlOwner	1.3.6.1.4.1.81.30.2.4.3.1.7	OwnerString	read-create	The entity that configured this entry and is therefore using the resources assigned to it.
ROW xsSubnetMatrixControlStatus	1.3.6.1.4.1.81.30.2.4.3.1.8	RowStatus	read-create	The status of this xsSubnetMatrixControlEntry. 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 xsSubnetMatrixSDTable, xsSubnetMatrixDSTable shall be deleted by the agent.
xsSubnetMatrixControlTable	1.3.6.1.4.1.81.30.2.4.3		not-accessible	A list of higher layer (i.e. non-MAC) matrix control entries. These entries will enable the collection of the network and application level matrix tables containing conversation statistics indexed by pairs of subnetwork addresses. Entries in the xsSubnetMatrixSDTable and xsSubnetMatrixDSTable will be created on behalf of each entry in this table.
LAS xsSubnetMatrixDSCreateTime	1.3.6.1.4.1.81.30.2.4.5.1.7	LastCreateTime	read-only	The value of sysUpTime when this entry was last activated. This can be used by the management station to ensure that the entry has not been deleted and recreated between polls.
OCT xsSubnetMatrixDSDestAddress	1.3.6.1.4.1.81.30.2.4.5.1.4	OCTET STRING	not-accessible	The subnetwork destination address for this xsSubnetMatrixDSEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
OCT xsSubnetMatrixDSDestMask	1.3.6.1.4.1.81.30.2.4.5.1.5	OCTET STRING	not-accessible	The subnetwork destination mask for this xsSubnetMatrixDSEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
xsSubnetMatrixDSEntry	1.3.6.1.4.1.81.30.2.4.5.1		not-accessible	A conceptual row in the xsSubnetMatrixDSTable. The hlMatrixControlIndex value in the index identifies the hlMatrixControlEntry on whose behalf this entry was created. The protocolDirLocalIndex value in the index identifies the network layer protocol of the xsSubnetMatrixDSSourceAddress and xsSubnetMatrixDSDestAddress. An example of the indexing of this table is xsSubnetMatrixDSPkts.1.783495.18.4.128.2.6.7.4.255.255.255.0.4.128.3.6.6.4.255.255.255.0.18
NUM xsSubnetMatrixDSPkts	1.3.6.1.4.1.81.30.2.4.5.1.6	ZeroBasedCounter32	read-only	The number of packets without errors transmitted from the source address to the destination address since this entry was added to the xsSubnetMatrixDSTable. Note that this is the number of link-layer packets, so if a single network-layer packet is fragmented into several link-layer frames, this counter is incremented several times.
OCT xsSubnetMatrixDSSourceAddress	1.3.6.1.4.1.81.30.2.4.5.1.2	OCTET STRING	not-accessible	The subnetwork source address for this xsSubnetMatrixDSEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
OCT xsSubnetMatrixDSSourceMask	1.3.6.1.4.1.81.30.2.4.5.1.3	OCTET STRING	not-accessible	The subnetwork source mask for this xsSubnetMatrixDSEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
xsSubnetMatrixDSTable	1.3.6.1.4.1.81.30.2.4.5		not-accessible	A list of traffic matrix entries which collect statistics for conversations between two subnetwork-level addresses. This table is indexed first by the destination address and then by the source address to make it convenient to collect all conversations to a particular address. The probe will populate this table for all network layer and application layer protocols in the protocol directory table whose value of protocolDirMatrixConfig is equal to supportedOn(3), and will delete any entries whose protocolDirEntry is deleted or has a protocolDirMatrixConfig value of supportedOff(2). The probe will add to this table all pairs of addresses that fits the xsHostFilter. Further, this table will only contain entries that have a corresponding entry in the xsSubnetMatrixSDTable with the same source address and destination address.
TIM xsSubnetMatrixDSTimeMark	1.3.6.1.4.1.81.30.2.4.5.1.1	TimeFilter	not-accessible	A TimeFilter for this entry. See the TimeFilter textual convention to see how this works.
LAS xsSubnetMatrixSDCreateTime	1.3.6.1.4.1.81.30.2.4.4.1.7	LastCreateTime	read-only	The value of sysUpTime when this entry was last activated. This can be used by the management station to ensure that the entry has not been deleted and recreated between polls.
OCT xsSubnetMatrixSDDestAddress	1.3.6.1.4.1.81.30.2.4.4.1.4	OCTET STRING	not-accessible	The subnetwork destination address for this xsSubnetMatrixSDEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
OCT xsSubnetMatrixSDDestMask	1.3.6.1.4.1.81.30.2.4.4.1.5	OCTET STRING	not-accessible	The subnetwork destination mask for this xsSubnetMatrixSDEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
xsSubnetMatrixSDEntry	1.3.6.1.4.1.81.30.2.4.4.1		not-accessible	A conceptual row in the xsSubnetMatrixSDTable. The xsSubnetMatrixControlIndex value in the index identifies the xsSubnetMatrixControlEntry on whose behalf this entry was created. The first protocolDirLocalIndex value in the index identifies the protocol of the xsSubnetMatrixSDSourceAddress and xsSubnetMatrixSDDestAddress (network layer protocol), the second protocolDirLocalIndex. identifies the protocol to be monitored on that subnet (network or application layer) An example of the indexing of this table is xsSubnetMatrixSDPkts.1.783495.18.4.128.2.6.6.4.255.255.255.0.4.128.3.6.7..4.255.255.255.0.18
NUM xsSubnetMatrixSDPkts	1.3.6.1.4.1.81.30.2.4.4.1.6	ZeroBasedCounter32	read-only	The number of packets without errors transmitted from the source address to the destination address since this entry was added to the xsSubnetMatrixSDTable. Note that this is the number of link-layer packets, so if a single network-layer packet is fragmented into several link-layer frames, this counter is incremented several times.
OCT xsSubnetMatrixSDSourceAddress	1.3.6.1.4.1.81.30.2.4.4.1.2	OCTET STRING	not-accessible	The subnetwork source address for this xsSubnetMatrixSDEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
OCT xsSubnetMatrixSDSourceMask	1.3.6.1.4.1.81.30.2.4.4.1.3	OCTET STRING	not-accessible	The subnetwork source mask for this xsSubnetMatrixSDEntry. This is represented as an octet string with specific semantics and length as identified by the protocolDirLocalIndex component of the index. For example, if the protocolDirLocalIndex indicates an encapsulation of ip, this object is encoded as a length octet of 4, followed by the 4 octets of the ip address, in network byte order.
xsSubnetMatrixSDTable	1.3.6.1.4.1.81.30.2.4.4		not-accessible	A list of traffic matrix entries which collect statistics for conversations between two network-level addresses. This table is indexed first by the source address and then by the destination address to make it convenient to collect all conversations from a particular address. The probe will populate this table for all network layer protocols in the protocol directory table whose value of protocolDirMatrixConfig is equal to supportedOn(3), and will delete any entries whose protocolDirEntry is deleted or has a protocolDirMatrixConfig value of supportedOff(2). The probe will add to this table all pairs of addresses seen in all packets with no MAC errors, and will increment octet and packet counts in the table for all packets with no MAC errors. Further, this table will only contain entries that have a corresponding entry in the xsSubnetMatrixDSTable with the same source address and destination address.
TIM xsSubnetMatrixSDTimeMark	1.3.6.1.4.1.81.30.2.4.4.1.1	TimeFilter	not-accessible	A TimeFilter for this entry. See the TimeFilter textual convention to see how this works.
NUM xsSubnetOutPkts	1.3.6.1.4.1.81.30.2.4.2.1.5	ZeroBasedCounter32	read-only	The number of packets without errors transmitted by this subnetwork address since it was added to the xsSubnetTable. Note that this is the number of link-layer packets, so if a single network-layer packet is fragmented into several link-layer frames, this counter is incremented several times.
TIK xsSubnetStatsTimeStamp	1.3.6.1.4.1.81.30.2.8	TimeTicks	read-only	This attribute contains the value of sysUpTime at the time xsSubnetStats counters were calculated.
xsSubnetTable	1.3.6.1.4.1.81.30.2.4.2		not-accessible	A collection of statistics for a particular subnetwork layer address that has been discovered on an interface of this device. The probe will populate this table for all network layer protocols in the protocol directory table whose value of protocolDirHostConfig is equal to supportedOn(3), and will delete any entries whose protocolDirEntry is deleted or has a protocolDirHostConfig value of supportedOff(2). The probe will add to this table all subnetwork addresses that exist in the xsHostFilter.
TIM xsSubnetTimeMark	1.3.6.1.4.1.81.30.2.4.2.1.1	TimeFilter	not-accessible	A TimeFilter for this entry. See the TimeFilter textual convention to see how this works.

RFC description

Switch Monitoring v2 (SMON2) MIB for VLAN traffic monitoring, port mirroring, and statistical collection on switches.

Start monitoring vendor-neutral SMON-based managed Ethernet switch (Host Top-N traffic analysis) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download SMON2-MIB