All MIBs › EtherLike-MIB
Organization: IETF Ethernet Interfaces and Hub MIB Working Group
Last Updated: 2003-09-19
Category: Network Interfaces
Description: Defines managed objects for Ethernet-like network interfaces, providing detailed Ethernet-specific statistics beyond what IF-MIB offers, such as alignment errors and FCS errors.
IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring EtherLike-MIB with a free 30-day trial of IPNetwork Monitor.
What Is EtherLike-MIB?
EtherLike-MIB is a vendor-neutral IETF standards-track module (built on IEEE 802.3) that supplements the generic IF-MIB with Ethernet-specific interface statistics and configuration objects. It exposes per-interface Ethernet data such as frame error counters, collision statistics, and duplex/speed-related parameters, going beyond the generic interface counters that IF-MIB provides. It is heavily used for monitoring the health of an Ethernet link's hardware and driver behavior — rising alignment errors or FCS (frame check sequence) errors typically point to cabling, NIC, or duplex-mismatch problems, while collision counts help identify shared-media contention or half-duplex misconfiguration. It explicitly depends on and complements IF-MIB (the ifTable/ifXTable indexing), and it directly references the IEEE 802.3 standard for its semantics. It is deployed on essentially any networked device with Ethernet interfaces — switches, routers, servers, and NICs — wherever detailed Ethernet-layer fault diagnosis is needed, and most monitoring tool documentation simply calls it the EtherLike MIB when referencing dot3StatsTable counters.
IPNetwork Monitor allows you to monitor SNMP objects defined in EtherLike-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, standards-based MIB, not tied to a specific manufacturer
- any device with Ethernet interfaces (switches, routers, servers, NICs)
Monitoring Examples
An administrator would typically poll the dot3StatsTable (indexed by dot3StatsIndex, tied back to an ifIndex) to track counters like alignment errors and FCS errors on a given Ethernet port; a sudden climb in these counters on one interface, especially combined with a duplex mismatch indication, is a classic sign of a bad cable, failing transceiver, or auto-negotiation problem on that link.
What Can Be Monitored
- Ethernet alignment errors
- FCS (frame check sequence) errors
- collision counts
- duplex mode/mismatch status
- per-interface Ethernet error statistics
This MIB depends on
Related MIBs
Imported Objects
From IF-MIB
| InterfaceIndex | |
| ifIndex | OBJECT-TYPE |
From SNMPv2-CONF
| MODULE-COMPLIANCE | |
| OBJECT-GROUP |
From SNMPv2-SMI
| Counter32 | |
| Counter64 | |
| Integer32 | |
| MODULE-IDENTITY | |
| OBJECT-IDENTITY | |
| OBJECT-TYPE | |
| mib-2 | |
| transmission |
From SNMPv2-TC
| TruthValue |
OIDs
| OID symbolic | OID numeric | Type | Access | Description |
|---|---|---|---|---|
| dot3 | 1.3.6.1.2.1.10.7 | |||
| I32 dot3CollCount | 1.3.6.1.2.1.10.7.5.1.2 | Integer32 | not-accessible | The number of per-frame media collisions for which a particular collision histogram cell represents the frequency on a particular interface. |
| dot3CollEntry | 1.3.6.1.2.1.10.7.5.1 | not-accessible | A cell in the histogram of per-frame collisions for a particular interface. An instance of this object represents the frequency of individual MAC frames for which the transmission (successful or otherwise) on a particular interface is accompanied by a particular number of media collisions. | |
| C32 dot3CollFrequencies | 1.3.6.1.2.1.10.7.5.1.3 | Counter32 | read-only | A count of individual MAC frames for which the transmission (successful or otherwise) on a particular interface occurs after the frame has experienced exactly the number of collisions in the associated dot3CollCount object. For example, a frame which is transmitted on interface 77 after experiencing exactly 4 collisions would be indicated by incrementing only dot3CollFrequencies.77.4. No other instance of dot3CollFrequencies would be incremented in this example. This counter does not increment when the interface is operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| dot3CollTable | 1.3.6.1.2.1.10.7.5 | not-accessible | A collection of collision histograms for a particular set of interfaces. | |
| dot3Compliance | 1.3.6.1.2.1.35.2.2.3 | ******** THIS COMPLIANCE IS DEPRECATED ******** The compliance statement for managed network entities which have ethernet-like network interfaces. This compliance is deprecated and replaced by dot3Compliance2. | ||
| dot3Compliance2 | 1.3.6.1.2.1.35.2.2.4 | The compliance statement for managed network entities which have ethernet-like network interfaces. Note that compliance with this MIB module requires compliance with the ifCompliance3 MODULE-COMPLIANCE statement of the IF-MIB (RFC2863). In addition, compliance with this MIB module requires compliance with the mauModIfCompl3 MODULE-COMPLIANCE statement of the MAU-MIB (RFC3636). | ||
| dot3ControlEntry | 1.3.6.1.2.1.10.7.9.1 | not-accessible | An entry in the table, containing information about the MAC Control sublayer on a single ethernet-like interface. | |
| BIT dot3ControlFunctionsSupported | 1.3.6.1.2.1.10.7.9.1.1 | Bits | read-only | A list of the possible MAC Control functions implemented for this interface. |
| C32 dot3ControlInUnknownOpcodes | 1.3.6.1.2.1.10.7.9.1.2 | Counter32 | read-only | A count of MAC Control frames received on this interface that contain an opcode that is not supported by this device. For interfaces operating at 10 Gb/s, this counter can roll over in less than 5 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCControlInUnknownOpcodes object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| dot3ControlTable | 1.3.6.1.2.1.10.7.9 | not-accessible | A table of descriptive and status information about the MAC Control sublayer on the ethernet-like interfaces attached to a particular system. There will be one row in this table for each ethernet-like interface in the system which implements the MAC Control sublayer. If some, but not all, of the ethernet-like interfaces in the system implement the MAC Control sublayer, there will be fewer rows in this table than in the dot3StatsTable. | |
| dot3ErrorInitError | 1.3.6.1.2.1.10.7.7.1 | ******** THIS IDENTITY IS DEPRECATED ******* Couldn't initialize MAC chip for test. This object identity has been deprecated, since the ifTestTable in the IF-MIB was deprecated, and there is no longer a standard mechanism for initiating an interface test. This left no standard way of using this object identity. | ||
| dot3ErrorLoopbackError | 1.3.6.1.2.1.10.7.7.2 | ******** THIS IDENTITY IS DEPRECATED ******* Expected data not received (or not received correctly) in loopback test. This object identity has been deprecated, since the ifTestTable in the IF-MIB was deprecated, and there is no longer a standard mechanism for initiating an interface test. This left no standard way of using this object identity. | ||
| dot3Errors | 1.3.6.1.2.1.10.7.7 | |||
| C64 dot3HCControlInUnknownOpcodes | 1.3.6.1.2.1.10.7.9.1.3 | Counter64 | read-only | A count of MAC Control frames received on this interface that contain an opcode that is not supported by this device. This counter is a 64 bit version of dot3ControlInUnknownOpcodes. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C64 dot3HCInPauseFrames | 1.3.6.1.2.1.10.7.10.1.5 | Counter64 | read-only | A count of MAC Control frames received on this interface with an opcode indicating the PAUSE operation. This counter does not increment when the interface is operating in half-duplex mode. This counter is a 64 bit version of dot3InPauseFrames. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C64 dot3HCOutPauseFrames | 1.3.6.1.2.1.10.7.10.1.6 | Counter64 | read-only | A count of MAC Control frames transmitted on this interface with an opcode indicating the PAUSE operation. This counter does not increment when the interface is operating in half-duplex mode. This counter is a 64 bit version of dot3OutPauseFrames. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C64 dot3HCStatsAlignmentErrors | 1.3.6.1.2.1.10.7.11.1.1 | Counter64 | read-only | A count of frames received on a particular interface that are not an integral number of octets in length and do not pass the FCS check. The count represented by an instance of this object is incremented when the alignmentError status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions pertain are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. This counter does not increment for group encoding schemes greater than 4 bits per group. This counter is a 64 bit version of dot3StatsAlignmentErrors. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| dot3HCStatsEntry | 1.3.6.1.2.1.10.7.11.1 | not-accessible | An entry containing 64-bit statistics for a single ethernet-like interface. | |
| C64 dot3HCStatsFCSErrors | 1.3.6.1.2.1.10.7.11.1.2 | Counter64 | read-only | A count of frames received on a particular interface that are an integral number of octets in length but do not pass the FCS check. This count does not include frames received with frame-too-long or frame-too-short error. The count represented by an instance of this object is incremented when the frameCheckError status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions pertain are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. Note: Coding errors detected by the physical layer for speeds above 10 Mb/s will cause the frame to fail the FCS check. This counter is a 64 bit version of dot3StatsFCSErrors. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C64 dot3HCStatsFrameTooLongs | 1.3.6.1.2.1.10.7.11.1.4 | Counter64 | read-only | A count of frames received on a particular interface that exceed the maximum permitted frame size. The count represented by an instance of this object is incremented when the frameTooLong status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions pertain are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. This counter is a 64 bit version of dot3StatsFrameTooLongs. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C64 dot3HCStatsInternalMacReceiveErrors | 1.3.6.1.2.1.10.7.11.1.5 | Counter64 | read-only | A count of frames for which reception on a particular interface fails due to an internal MAC sublayer receive error. A frame is only counted by an instance of this object if it is not counted by the corresponding instance of either the dot3StatsFrameTooLongs object, the dot3StatsAlignmentErrors object, or the dot3StatsFCSErrors object. The precise meaning of the count represented by an instance of this object is implementation- specific. In particular, an instance of this object may represent a count of receive errors on a particular interface that are not otherwise counted. This counter is a 64 bit version of dot3StatsInternalMacReceiveErrors. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C64 dot3HCStatsInternalMacTransmitErrors | 1.3.6.1.2.1.10.7.11.1.3 | Counter64 | read-only | A count of frames for which transmission on a particular interface fails due to an internal MAC sublayer transmit error. A frame is only counted by an instance of this object if it is not counted by the corresponding instance of either the dot3StatsLateCollisions object, the dot3StatsExcessiveCollisions object, or the dot3StatsCarrierSenseErrors object. The precise meaning of the count represented by an instance of this object is implementation- specific. In particular, an instance of this object may represent a count of transmission errors on a particular interface that are not otherwise counted. This counter is a 64 bit version of dot3StatsInternalMacTransmitErrors. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C64 dot3HCStatsSymbolErrors | 1.3.6.1.2.1.10.7.11.1.6 | Counter64 | read-only | For an interface operating at 100 Mb/s, the number of times there was an invalid data symbol when a valid carrier was present. For an interface operating in half-duplex mode at 1000 Mb/s, the number of times the receiving media is non-idle (a carrier event) for a period of time equal to or greater than slotTime, and during which there was at least one occurrence of an event that causes the PHY to indicate 'Data reception error' or 'carrier extend error' on the GMII. For an interface operating in full-duplex mode at 1000 Mb/s, the number of times the receiving media is non-idle (a carrier event) for a period of time equal to or greater than minFrameSize, and during which there was at least one occurrence of an event that causes the PHY to indicate 'Data reception error' on the GMII. For an interface operating at 10 Gb/s, the number of times the receiving media is non-idle (a carrier event) for a period of time equal to or greater than minFrameSize, and during which there was at least one occurrence of an event that causes the PHY to indicate 'Receive Error' on the XGMII. The count represented by an instance of this object is incremented at most once per carrier event, even if multiple symbol errors occur during the carrier event. This count does not increment if a collision is present. This counter is a 64 bit version of dot3StatsSymbolErrors. It should be used on interfaces operating at 10 Gb/s or faster. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| dot3HCStatsTable | 1.3.6.1.2.1.10.7.11 | not-accessible | A table containing 64-bit versions of error counters from the dot3StatsTable. The 32-bit versions of these counters may roll over quite quickly on higher speed ethernet interfaces. The counters that have 64-bit versions in this table are the counters that apply to full-duplex interfaces, since 10 Gb/s and faster ethernet-like interfaces do not support half-duplex, and very few 1000 Mb/s ethernet-like interfaces support half-duplex. Entries in this table are recommended for interfaces capable of operating at 1000 Mb/s or faster, and are required for interfaces capable of operating at 10 Gb/s or faster. Lower speed ethernet-like interfaces do not need entries in this table, in which case there may be fewer entries in this table than in the dot3StatsTable. However, implementations containing interfaces with a mix of speeds may choose to implement entries in this table for all ethernet-like interfaces. | |
| C32 dot3InPauseFrames | 1.3.6.1.2.1.10.7.10.1.3 | Counter32 | read-only | A count of MAC Control frames received on this interface with an opcode indicating the PAUSE operation. This counter does not increment when the interface is operating in half-duplex mode. For interfaces operating at 10 Gb/s, this counter can roll over in less than 5 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCInPauseFrames object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3OutPauseFrames | 1.3.6.1.2.1.10.7.10.1.4 | Counter32 | read-only | A count of MAC Control frames transmitted on this interface with an opcode indicating the PAUSE operation. This counter does not increment when the interface is operating in half-duplex mode. For interfaces operating at 10 Gb/s, this counter can roll over in less than 5 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCOutPauseFrames object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| INT dot3PauseAdminMode | 1.3.6.1.2.1.10.7.10.1.1 | INTEGER | read-write | This object is used to configure the default administrative PAUSE mode for this interface. This object represents the administratively-configured PAUSE mode for this interface. If auto-negotiation is not enabled or is not implemented for the active MAU attached to this interface, the value of this object determines the operational PAUSE mode of the interface whenever it is operating in full-duplex mode. In this case, a set to this object will force the interface into the specified mode. If auto-negotiation is implemented and enabled for the MAU attached to this interface, the PAUSE mode for this interface is determined by auto-negotiation, and the value of this object denotes the mode to which the interface will automatically revert if/when auto-negotiation is later disabled. Note that when auto-negotiation is running, administrative control of the PAUSE mode may be accomplished using the ifMauAutoNegCapAdvertisedBits object in the MAU-MIB. Note that the value of this object is ignored when the interface is not operating in full-duplex mode. An attempt to set this object to 'enabledXmit(2)' or 'enabledRcv(3)' will fail on interfaces that do not support operation at greater than 100 Mb/s. |
| dot3PauseEntry | 1.3.6.1.2.1.10.7.10.1 | not-accessible | An entry in the table, containing information about the MAC Control PAUSE function on a single ethernet-like interface. | |
| INT dot3PauseOperMode | 1.3.6.1.2.1.10.7.10.1.2 | INTEGER | read-only | This object reflects the PAUSE mode currently in use on this interface, as determined by either (1) the result of the auto-negotiation function or (2) if auto-negotiation is not enabled or is not implemented for the active MAU attached to this interface, by the value of dot3PauseAdminMode. Interfaces operating at 100 Mb/s or less will never return 'enabledXmit(2)' or 'enabledRcv(3)'. Interfaces operating in half-duplex mode will always return 'disabled(1)'. Interfaces on which auto-negotiation is enabled but not yet completed should return the value 'disabled(1)'. |
| dot3PauseTable | 1.3.6.1.2.1.10.7.10 | not-accessible | A table of descriptive and status information about the MAC Control PAUSE function on the ethernet-like interfaces attached to a particular system. There will be one row in this table for each ethernet-like interface in the system which supports the MAC Control PAUSE function (i.e., the 'pause' bit in the corresponding instance of dot3ControlFunctionsSupported is set). If some, but not all, of the ethernet-like interfaces in the system implement the MAC Control PAUSE function (for example, if some interfaces only support half-duplex), there will be fewer rows in this table than in the dot3StatsTable. | |
| C32 dot3StatsAlignmentErrors | 1.3.6.1.2.1.10.7.2.1.2 | Counter32 | read-only | A count of frames received on a particular interface that are not an integral number of octets in length and do not pass the FCS check. The count represented by an instance of this object is incremented when the alignmentError status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions pertain are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. This counter does not increment for group encoding schemes greater than 4 bits per group. For interfaces operating at 10 Gb/s, this counter can roll over in less than 5 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCStatsAlignmentErrors object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsCarrierSenseErrors | 1.3.6.1.2.1.10.7.2.1.11 | Counter32 | read-only | The number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame on a particular interface. The count represented by an instance of this object is incremented at most once per transmission attempt, even if the carrier sense condition fluctuates during a transmission attempt. This counter does not increment when the interface is operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsDeferredTransmissions | 1.3.6.1.2.1.10.7.2.1.7 | Counter32 | read-only | A count of frames for which the first transmission attempt on a particular interface is delayed because the medium is busy. The count represented by an instance of this object does not include frames involved in collisions. This counter does not increment when the interface is operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| INT dot3StatsDuplexStatus | 1.3.6.1.2.1.10.7.2.1.19 | INTEGER | read-only | The current mode of operation of the MAC entity. 'unknown' indicates that the current duplex mode could not be determined. Management control of the duplex mode is accomplished through the MAU MIB. When an interface does not support autonegotiation, or when autonegotiation is not enabled, the duplex mode is controlled using ifMauDefaultType. When autonegotiation is supported and enabled, duplex mode is controlled using ifMauAutoNegAdvertisedBits. In either case, the currently operating duplex mode is reflected both in this object and in ifMauType. Note that this object provides redundant information with ifMauType. Normally, redundant objects are discouraged. However, in this instance, it allows a management application to determine the duplex status of an interface without having to know every possible value of ifMauType. This was felt to be sufficiently valuable to justify the redundancy. |
| dot3StatsEntry | 1.3.6.1.2.1.10.7.2.1 | not-accessible | Statistics for a particular interface to an ethernet-like medium. | |
| OID dot3StatsEtherChipSet | 1.3.6.1.2.1.10.7.2.1.17 | OBJECT IDENTIFIER | read-only | ******** THIS OBJECT IS DEPRECATED ******** This object contains an OBJECT IDENTIFIER which identifies the chipset used to realize the interface. Ethernet-like interfaces are typically built out of several different chips. The MIB implementor is presented with a decision of which chip to identify via this object. The implementor should identify the chip which is usually called the Medium Access Control chip. If no such chip is easily identifiable, the implementor should identify the chip which actually gathers the transmit and receive statistics and error indications. This would allow a manager station to correlate the statistics and the chip generating them, giving it the ability to take into account any known anomalies in the chip. This object has been deprecated. Implementation feedback indicates that it is of limited use for debugging network problems in the field, and the administrative overhead involved in maintaining a registry of chipset OIDs is not justified. |
| C32 dot3StatsExcessiveCollisions | 1.3.6.1.2.1.10.7.2.1.9 | Counter32 | read-only | A count of frames for which transmission on a particular interface fails due to excessive collisions. This counter does not increment when the interface is operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsFCSErrors | 1.3.6.1.2.1.10.7.2.1.3 | Counter32 | read-only | A count of frames received on a particular interface that are an integral number of octets in length but do not pass the FCS check. This count does not include frames received with frame-too-long or frame-too-short error. The count represented by an instance of this object is incremented when the frameCheckError status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions pertain are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. Note: Coding errors detected by the physical layer for speeds above 10 Mb/s will cause the frame to fail the FCS check. For interfaces operating at 10 Gb/s, this counter can roll over in less than 5 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCStatsFCSErrors object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsFrameTooLongs | 1.3.6.1.2.1.10.7.2.1.13 | Counter32 | read-only | A count of frames received on a particular interface that exceed the maximum permitted frame size. The count represented by an instance of this object is incremented when the frameTooLong status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions pertain are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. For interfaces operating at 10 Gb/s, this counter can roll over in less than 80 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCStatsFrameTooLongs object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| NUM dot3StatsIndex | 1.3.6.1.2.1.10.7.2.1.1 | InterfaceIndex | read-only | An index value that uniquely identifies an interface to an ethernet-like medium. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex. |
| C32 dot3StatsInternalMacReceiveErrors | 1.3.6.1.2.1.10.7.2.1.16 | Counter32 | read-only | A count of frames for which reception on a particular interface fails due to an internal MAC sublayer receive error. A frame is only counted by an instance of this object if it is not counted by the corresponding instance of either the dot3StatsFrameTooLongs object, the dot3StatsAlignmentErrors object, or the dot3StatsFCSErrors object. The precise meaning of the count represented by an instance of this object is implementation- specific. In particular, an instance of this object may represent a count of receive errors on a particular interface that are not otherwise counted. For interfaces operating at 10 Gb/s, this counter can roll over in less than 5 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCStatsInternalMacReceiveErrors object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsInternalMacTransmitErrors | 1.3.6.1.2.1.10.7.2.1.10 | Counter32 | read-only | A count of frames for which transmission on a particular interface fails due to an internal MAC sublayer transmit error. A frame is only counted by an instance of this object if it is not counted by the corresponding instance of either the dot3StatsLateCollisions object, the dot3StatsExcessiveCollisions object, or the dot3StatsCarrierSenseErrors object. The precise meaning of the count represented by an instance of this object is implementation- specific. In particular, an instance of this object may represent a count of transmission errors on a particular interface that are not otherwise counted. For interfaces operating at 10 Gb/s, this counter can roll over in less than 5 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCStatsInternalMacTransmitErrors object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsLateCollisions | 1.3.6.1.2.1.10.7.2.1.8 | Counter32 | read-only | The number of times that a collision is detected on a particular interface later than one slotTime into the transmission of a packet. A (late) collision included in a count represented by an instance of this object is also considered as a (generic) collision for purposes of other collision-related statistics. This counter does not increment when the interface is operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsMultipleCollisionFrames | 1.3.6.1.2.1.10.7.2.1.5 | Counter32 | read-only | A count of frames that are involved in more than one collision and are subsequently transmitted successfully. A frame that is counted by an instance of this object is also counted by the corresponding instance of either the ifOutUcastPkts, ifOutMulticastPkts, or ifOutBroadcastPkts, and is not counted by the corresponding instance of the dot3StatsSingleCollisionFrames object. This counter does not increment when the interface is operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| T/F dot3StatsRateControlAbility | 1.3.6.1.2.1.10.7.2.1.20 | TruthValue | read-only | 'true' for interfaces operating at speeds above 1000 Mb/s that support Rate Control through lowering the average data rate of the MAC sublayer, with frame granularity, and 'false' otherwise. |
| INT dot3StatsRateControlStatus | 1.3.6.1.2.1.10.7.2.1.21 | INTEGER | read-only | The current Rate Control mode of operation of the MAC sublayer of this interface. |
| C32 dot3StatsSingleCollisionFrames | 1.3.6.1.2.1.10.7.2.1.4 | Counter32 | read-only | A count of frames that are involved in a single collision, and are subsequently transmitted successfully. A frame that is counted by an instance of this object is also counted by the corresponding instance of either the ifOutUcastPkts, ifOutMulticastPkts, or ifOutBroadcastPkts, and is not counted by the corresponding instance of the dot3StatsMultipleCollisionFrames object. This counter does not increment when the interface is operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsSQETestErrors | 1.3.6.1.2.1.10.7.2.1.6 | Counter32 | read-only | A count of times that the SQE TEST ERROR is received on a particular interface. The SQE TEST ERROR is set in accordance with the rules for verification of the SQE detection mechanism in the PLS Carrier Sense Function as described in IEEE Std. 802.3, 2000 Edition, section 7.2.4.6. This counter does not increment on interfaces operating at speeds greater than 10 Mb/s, or on interfaces operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| C32 dot3StatsSymbolErrors | 1.3.6.1.2.1.10.7.2.1.18 | Counter32 | read-only | For an interface operating at 100 Mb/s, the number of times there was an invalid data symbol when a valid carrier was present. For an interface operating in half-duplex mode at 1000 Mb/s, the number of times the receiving media is non-idle (a carrier event) for a period of time equal to or greater than slotTime, and during which there was at least one occurrence of an event that causes the PHY to indicate 'Data reception error' or 'carrier extend error' on the GMII. For an interface operating in full-duplex mode at 1000 Mb/s, the number of times the receiving media is non-idle (a carrier event) for a period of time equal to or greater than minFrameSize, and during which there was at least one occurrence of an event that causes the PHY to indicate 'Data reception error' on the GMII. For an interface operating at 10 Gb/s, the number of times the receiving media is non-idle (a carrier event) for a period of time equal to or greater than minFrameSize, and during which there was at least one occurrence of an event that causes the PHY to indicate 'Receive Error' on the XGMII. The count represented by an instance of this object is incremented at most once per carrier event, even if multiple symbol errors occur during the carrier event. This count does not increment if a collision is present. This counter does not increment when the interface is operating at 10 Mb/s. For interfaces operating at 10 Gb/s, this counter can roll over in less than 5 minutes if it is incrementing at its maximum rate. Since that amount of time could be less than a management station's poll cycle time, in order to avoid a loss of information, a management station is advised to poll the dot3HCStatsSymbolErrors object for 10 Gb/s or faster interfaces. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime. |
| dot3StatsTable | 1.3.6.1.2.1.10.7.2 | not-accessible | Statistics for a collection of ethernet-like interfaces attached to a particular system. There will be one row in this table for each ethernet-like interface in the system. | |
| dot3TestLoopBack | 1.3.6.1.2.1.10.7.6.2 | ******** THIS IDENTITY IS DEPRECATED ******* This test configures the MAC chip and executes an internal loopback test of memory, data paths, and the MAC chip logic. This loopback test can only be executed if the interface is offline. Once the test has completed, the MAC chip should be reinitialized for network operation, but it should remain offline. If an error occurs during a test, the appropriate test result object will be set to indicate a failure. The two OBJECT IDENTIFIER values dot3ErrorInitError and dot3ErrorLoopbackError may be used to provided more information as values for an appropriate test result code object. This object identity has been deprecated, since the ifTestTable in the IF-MIB was deprecated, and there is no longer a standard mechanism for initiating an interface test. This left no standard way of using this object identity. | ||
| dot3Tests | 1.3.6.1.2.1.10.7.6 | |||
| dot3TestTdr | 1.3.6.1.2.1.10.7.6.1 | ******** THIS IDENTITY IS DEPRECATED ******* The Time-Domain Reflectometry (TDR) test is specific to ethernet-like interfaces of type 10Base5 and 10Base2. The TDR value may be useful in determining the approximate distance to a cable fault. It is advisable to repeat this test to check for a consistent resulting TDR value, to verify that there is a fault. A TDR test returns as its result the time interval, measured in 10 MHz ticks or 100 nsec units, between the start of TDR test transmission and the subsequent detection of a collision or deassertion of carrier. On successful completion of a TDR test, the result is stored as the value of an appropriate instance of an appropriate vendor specific MIB object, and the OBJECT IDENTIFIER of that instance is stored in the appropriate instance of the appropriate test result code object (thereby indicating where the result has been stored). This object identity has been deprecated, since the ifTestTable in the IF-MIB was deprecated, and there is no longer a standard mechanism for initiating an interface test. This left no standard way of using this object identity. | ||
| ether100MbsCompliance | 1.3.6.1.2.1.35.2.2.2 | ******** THIS COMPLIANCE IS DEPRECATED ******** The compliance statement for managed network entities which have 100 Mb/sec ethernet-like network interfaces. This compliance is deprecated and replaced by dot3Compliance. | ||
| etherCollisionTableGroup | 1.3.6.1.2.1.35.2.1.2 | A collection of objects providing a histogram of packets successfully transmitted after experiencing exactly N collisions. | ||
| etherCompliance | 1.3.6.1.2.1.35.2.2.1 | ******** THIS COMPLIANCE IS DEPRECATED ******** The compliance statement for managed network entities which have ethernet-like network interfaces. This compliance is deprecated and replaced by dot3Compliance. | ||
| etherCompliances | 1.3.6.1.2.1.35.2.2 | |||
| etherConformance | 1.3.6.1.2.1.35.2 | |||
| etherControlGroup | 1.3.6.1.2.1.35.2.1.8 | A collection of objects providing information about the MAC Control sublayer on ethernet-like network interfaces. | ||
| etherControlPauseGroup | 1.3.6.1.2.1.35.2.1.9 | A collection of objects providing information about and control of the MAC Control PAUSE function on ethernet-like network interfaces. | ||
| etherDuplexGroup | 1.3.6.1.2.1.35.2.1.7 | A collection of objects providing information about the duplex mode of an ethernet-like network interface. | ||
| etherGroups | 1.3.6.1.2.1.35.2.1 | |||
| etherHCControlGroup | 1.3.6.1.2.1.35.2.1.13 | A collection of objects providing high-capacity statistics for the MAC Control sublayer on higher-speed ethernet-like network interfaces. | ||
| etherHCControlPauseGroup | 1.3.6.1.2.1.35.2.1.14 | A collection of objects providing high-capacity statistics for the MAC Control PAUSE function on higher-speed ethernet-like network interfaces. | ||
| etherHCStatsGroup | 1.3.6.1.2.1.35.2.1.12 | A collection of objects providing high-capacity statistics applicable to higher-speed ethernet-like network interfaces. | ||
| etherMIB | 1.3.6.1.2.1.35 | The MIB module to describe generic objects for ethernet-like network interfaces. The following reference is used throughout this MIB module: [IEEE 802.3 Std] refers to: IEEE Std 802.3, 2002 Edition: 'IEEE Standard for Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications', as amended by IEEE Std 802.3ae-2002: 'Amendment: Media Access Control (MAC) Parameters, Physical Layer, and Management Parameters for 10 Gb/s Operation', August, 2002. Of particular interest is Clause 30, '10 Mb/s, 100 Mb/s, 1000 Mb/s, and 10 Gb/s Management'. Copyright (C) The Internet Society (2003). This version of this MIB module is part of RFC 3635; see the RFC itself for full legal notices. | ||
| etherMIBObjects | 1.3.6.1.2.1.35.1 | |||
| etherRateControlGroup | 1.3.6.1.2.1.35.2.1.15 | A collection of objects providing information about the Rate Control function on ethernet-like interfaces. | ||
| etherStats100MbsGroup | 1.3.6.1.2.1.35.2.1.3 | ********* THIS GROUP IS DEPRECATED ********** A collection of objects providing information applicable to 100 Mb/sec ethernet-like network interfaces. This object group has been deprecated and replaced by etherStatsBaseGroup and etherStatsHighSpeedGroup. | ||
| etherStatsBaseGroup | 1.3.6.1.2.1.35.2.1.4 | ********* THIS GROUP IS DEPRECATED ********** A collection of objects providing information applicable to all ethernet-like network interfaces. This object group has been deprecated and replaced by etherStatsBaseGroup2 and etherStatsHalfDuplexGroup, to separate objects which must be implemented by all ethernet-like network interfaces from objects that need only be implemented on ethernet-like network interfaces that are capable of half-duplex operation. | ||
| etherStatsBaseGroup2 | 1.3.6.1.2.1.35.2.1.10 | A collection of objects providing information applicable to all ethernet-like network interfaces. | ||
| etherStatsGroup | 1.3.6.1.2.1.35.2.1.1 | ********* THIS GROUP IS DEPRECATED ********** A collection of objects providing information applicable to all ethernet-like network interfaces. This object group has been deprecated and replaced by etherStatsBaseGroup and etherStatsLowSpeedGroup. | ||
| etherStatsHalfDuplexGroup | 1.3.6.1.2.1.35.2.1.11 | A collection of objects providing information applicable only to half-duplex ethernet-like network interfaces. | ||
| etherStatsHighSpeedGroup | 1.3.6.1.2.1.35.2.1.6 | A collection of objects providing information applicable to ethernet-like network interfaces capable of operating at 100 Mb/s or faster. | ||
| etherStatsLowSpeedGroup | 1.3.6.1.2.1.35.2.1.5 | A collection of objects providing information applicable to ethernet-like network interfaces capable of operating at 10 Mb/s or slower in half-duplex mode. |
RFC description
Defines managed objects for Ethernet-like network interfaces including collision counters, frame statistics, and interface characteristics as standardized in RFC 3635 (obsoletes RFC 2358).
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