-- Network Working Group F. Kastenholz
-- Request for Comments: 1650 FTP Software, Inc.
-- Category: Standards Track August 1994-- Definitions of Managed Objects for
-- the Ethernet-like Interface Types using SMIv2EtherLike-MIB DEFINITIONS::=BEGINIMPORTSMODULE-IDENTITY,OBJECT-TYPE,Counter32,Gauge32,Integer32,FROM SNMPv2-SMI
TEXTUAL-CONVENTION,PhysAddress,FROM SNMPv2-TC
MODULE-COMPLIANCE,OBJECT-GROUPFROM SNMPv2-CONF
ifIndex, ifEntry FROM IF-MIB
mib-2 FROM RFC1213-MIB;etherMIB MODULE-IDENTITYLAST-UPDATED"9402030400Z"ORGANIZATION"IETF Interfaces MIB Working Group"CONTACT-INFO" Frank Kastenholz
Postal: FTP Software
2 High Street
North Andover, MA 01845
US
Tel: +1 508 685 4000
E-Mail: kasten@ftp.com"DESCRIPTION
"The MIB module to describe generic objects for
Ethernet-like network interfaces. This MIB is an
updated version of the Ethernet-like MIB in RFC
1398."::={ mib-2 35}etherMIBObjects OBJECTIDENTIFIER::={ etherMIB 1}dot3 OBJECTIDENTIFIER::={ transmission 7}-- the Ethernet-like Statistics groupdot3StatsTable OBJECT-TYPESYNTAXSEQUENCEOF Dot3StatsEntry
MAX-ACCESSnot-accessible
STATUScurrentDESCRIPTION"Statistics for a collection of ethernet-like
interfaces attached to a particular system."::={ dot3 2}dot3StatsEntry OBJECT-TYPESYNTAX Dot3StatsEntry
MAX-ACCESSnot-accessibleSTATUScurrentDESCRIPTION"Statistics for a particular interface to an
ethernet-like medium."INDEX{ dot3StatsIndex }::={ dot3StatsTable 1}
Dot3StatsEntry ::=SEQUENCE{
dot3StatsIndex INTEGER,
dot3StatsAlignmentErrors Counter32,
dot3StatsFCSErrors Counter32,
dot3StatsSingleCollisionFrames Counter32,
dot3StatsMultipleCollisionFrames Counter32,
dot3StatsSQETestErrors Counter32,
dot3StatsDeferredTransmissions Counter32,
dot3StatsLateCollisions Counter32,
dot3StatsExcessiveCollisions Counter32,
dot3StatsInternalMacTransmitErrors Counter32,
dot3StatsCarrierSenseErrors Counter32,
dot3StatsFrameTooLongs Counter32,
dot3StatsInternalMacReceiveErrors Counter32,
dot3StatsEtherChipSet OBJECTIDENTIFIER}dot3StatsIndex OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"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."::={ dot3StatsEntry 1}dot3StatsAlignmentErrors OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-onlySTATUScurrentDESCRIPTION"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 obtain are,
according to the conventions of IEEE 802.3
Layer Management, counted exclusively according
to the error status presented to the LLC."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 2}dot3StatsFCSErrors OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-onlySTATUScurrentDESCRIPTION"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.
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 obtain are,
according to the conventions of IEEE 802.3
Layer Management, counted exclusively according
to the error status presented to the LLC."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 3}dot3StatsSingleCollisionFrames OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-onlySTATUScurrentDESCRIPTION
"A count of successfully transmitted frames on
a particular interface for which transmission
is inhibited by exactly one collision.
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."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 4}dot3StatsMultipleCollisionFrames OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-onlySTATUScurrent
DESCRIPTION"A count of successfully transmitted frames on
a particular interface for which transmission
is inhibited by more than one collision.
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."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 5}dot3StatsSQETestErrors OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-only
STATUScurrentDESCRIPTION"A count of times that the SQE TEST ERROR
message is generated by the PLS sublayer for a
particular interface. The SQE TEST ERROR
message is defined in section 7.2.2.2.4 of
ANSI/IEEE 802.3-1985 and its generation is
described in section 7.2.4.6 of the same
document."REFERENCE"ANSI/IEEE Std 802.3-1985 Carrier Sense
Multiple Access with Collision Detection Access
Method and Physical Layer Specifications"::={ dot3StatsEntry 6}dot3StatsDeferredTransmissions OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-only
STATUScurrentDESCRIPTION"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."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 7}dot3StatsLateCollisions OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-onlySTATUScurrent
DESCRIPTION"The number of times that a collision is
detected on a particular interface later than
512 bit-times into the transmission of a
packet.
Five hundred and twelve bit-times corresponds
to 51.2 microseconds on a 10 Mbit/s system. 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."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 8}dot3StatsExcessiveCollisions OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-only
STATUScurrentDESCRIPTION"A count of frames for which transmission on a
particular interface fails due to excessive
collisions."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 9}dot3StatsInternalMacTransmitErrors OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-onlySTATUScurrentDESCRIPTION"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."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 10}dot3StatsCarrierSenseErrors OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-only
STATUScurrentDESCRIPTION"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."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 11}-- { dot3StatsEntry 12 } is not assigneddot3StatsFrameTooLongs OBJECT-TYPESYNTAXCounter32
MAX-ACCESSread-onlySTATUScurrentDESCRIPTION"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 obtain are,
according to the conventions of IEEE 802.3
Layer Management, counted exclusively according
to the error status presented to the LLC."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 13}
-- { dot3StatsEntry 14 } is not assigned-- { dot3StatsEntry 15 } is not assigneddot3StatsInternalMacReceiveErrors OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-onlySTATUScurrentDESCRIPTION"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."REFERENCE"IEEE 802.3 Layer Management"::={ dot3StatsEntry 16}dot3StatsEtherChipSet OBJECT-TYPESYNTAXOBJECTIDENTIFIERMAX-ACCESSread-onlySTATUScurrentDESCRIPTION"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."::={ dot3StatsEntry 17}-- the Ethernet-like Collision Statistics group-- Implementation of this group is optional; it is appropriate-- for all systems which have the necessary metering
dot3CollTable OBJECT-TYPESYNTAXSEQUENCEOF Dot3CollEntry
MAX-ACCESSnot-accessibleSTATUScurrentDESCRIPTION"A collection of collision histograms for a
particular set of interfaces."::={ dot3 5}dot3CollEntry OBJECT-TYPESYNTAX Dot3CollEntry
MAX-ACCESSnot-accessibleSTATUScurrentDESCRIPTION
"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."INDEX{ ifIndex, dot3CollCount }::={ dot3CollTable 1}
Dot3CollEntry ::=SEQUENCE{
dot3CollCount INTEGER,
dot3CollFrequencies Counter32}-- { dot3CollEntry 1 } is no longer in usedot3CollCount OBJECT-TYPE
SYNTAXINTEGER(1..16)MAX-ACCESSnot-accessibleSTATUScurrentDESCRIPTION"The number of per-frame media collisions for
which a particular collision histogram cell
represents the frequency on a particular
interface."::={ dot3CollEntry 2}dot3CollFrequencies OBJECT-TYPESYNTAXCounter32MAX-ACCESSread-only
STATUScurrentDESCRIPTION"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."::={ dot3CollEntry 3}-- 802.3 Testsdot3Tests OBJECTIDENTIFIER::={ dot3 6}
dot3Errors OBJECTIDENTIFIER::={ dot3 7}-- TDR Test-- The Time-Domain Reflectometry (TDR) test is specific-- to ethernet-like interfaces with the exception of-- 10BaseT and 10BaseF. 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.dot3TestTdr OBJECTIDENTIFIER::={ dot3Tests 1}
-- 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 the appropriate instance of the-- MIB object dot3TestTdrValue, and the OBJECT IDENTIFIER-- of that instanceis stored in the corresponding instance-- of ifExtnsTestCode (thereby indicating where the-- result has been stored).-- Loopback Test-- Another test is the full-duplex loopback test.-- 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.dot3TestLoopBack OBJECTIDENTIFIER::={ dot3Tests 2}-- If an error occurs during a test, the object-- ifTestResult (defined in RFC1573) will be set-- to failed(7). The following two OBJECT-- IDENTIFIERs may be used to provided more-- information as values for ifTestCode.
-- couldn't initialize MAC chip for testdot3ErrorInitError OBJECTIDENTIFIER::={ dot3Errors 1}-- expected data not received (or not-- received correctly) in loopback testdot3ErrorLoopbackError OBJECTIDENTIFIER::={ dot3Errors 2}-- RFC1573 does away with the interface chipset object.-- The following OBJECT IDENTIFIER definitions are-- retained for purposes of backwards compatibility-- with pre-RFC1573 systems.-- 802.3 Hardware Chipsets
-- The object ifExtnsChipSet is provided in RFC1229 to-- identify the MAC hardware used to communicate on an-- interface. The following hardware chipsets are-- provided for 802.3:dot3ChipSets OBJECTIDENTIFIER::={ dot3 8}dot3ChipSetAMD OBJECTIDENTIFIER::={ dot3ChipSets 1}dot3ChipSetAMD7990 OBJECTIDENTIFIER::={ dot3ChipSetAMD 1}dot3ChipSetAMD79900 OBJECTIDENTIFIER::={ dot3ChipSetAMD 2}
dot3ChipSetAMD79C940 OBJECTIDENTIFIER::={ dot3ChipSetAMD 3}dot3ChipSetIntel OBJECTIDENTIFIER::={ dot3ChipSets 2}dot3ChipSetIntel82586 OBJECTIDENTIFIER::={ dot3ChipSetIntel 1}dot3ChipSetIntel82596 OBJECTIDENTIFIER::={ dot3ChipSetIntel 2}
dot3ChipSetSeeq OBJECTIDENTIFIER::={ dot3ChipSets 3}dot3ChipSetSeeq8003 OBJECTIDENTIFIER::={ dot3ChipSetSeeq 1}dot3ChipSetNational OBJECTIDENTIFIER::={ dot3ChipSets 4}dot3ChipSetNational8390 OBJECTIDENTIFIER::={ dot3ChipSetNational 1}
dot3ChipSetNationalSonic OBJECTIDENTIFIER::={ dot3ChipSetNational 2}dot3ChipSetFujitsu OBJECTIDENTIFIER::={ dot3ChipSets 5}dot3ChipSetFujitsu86950 OBJECTIDENTIFIER::={ dot3ChipSetFujitsu 1}dot3ChipSetDigital OBJECTIDENTIFIER::={ dot3ChipSets 6}dot3ChipSetDigitalDC21040 OBJECTIDENTIFIER::=
{ dot3ChipSetDigital 1}-- For those chipsets not represented above, OBJECT IDENTIFIER-- assignment is required in other documentation, e.g., assignment-- within that part of the registration tree delegated to-- individual enterprises (see RFC1155).-- conformance informationetherConformance OBJECTIDENTIFIER::={ etherMIB 2}etherGroups OBJECTIDENTIFIER::={ etherConformance 1}
etherCompliances OBJECTIDENTIFIER::={ etherConformance 2}-- compliance statementsetherCompliance MODULE-COMPLIANCESTATUScurrentDESCRIPTION"The compliance statement for SNMPv2 entities which
have ethernet-like network interfaces."MODULE-- this moduleMANDATORY-GROUPS{ etherStatsGroup }GROUP etherCollisionTableGroup
DESCRIPTION"This group is optional. It is appropriate for
all systems which have the necessary metering.
Implementation in such systems is highly
recommended."::={ etherCompliances 1}-- units of conformanceetherStatsGroup OBJECT-GROUPOBJECTS{ dot3StatsIndex, dot3StatsAlignmentErrors,
dot3StatsFCSErrors,
dot3StatsSingleCollisionFrames,
dot3StatsMultipleCollisionFrames,
dot3StatsSQETestErrors,
dot3StatsDeferredTransmissions,
dot3StatsLateCollisions,
dot3StatsExcessiveCollisions,
dot3StatsInternalMacTransmitErrors,
dot3StatsCarrierSenseErrors,
dot3StatsFrameTooLongs,
dot3StatsInternalMacReceiveErrors,
dot3StatsEtherChipSet}STATUScurrentDESCRIPTION"A collection of objects providing information
applicable to all ethernet-like network interfaces."::={ etherGroups 1}etherCollisionTableGroup OBJECT-GROUPOBJECTS{ dot3CollCount, dot3CollFrequencies }STATUScurrentDESCRIPTION"A collection of objects providing a histogram
of packets successfully transmitted after
experiencing exactly N collisions."::={ etherGroups 2}END