📄 rfc1398.mib
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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-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "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 assigned dot3StatsFrameTooLongs OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "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 assigned dot3StatsInternalMacReceiveErrors OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "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 } -- 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-TYPE SYNTAX SEQUENCE OF Dot3CollEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "A collection of collision histograms for a particular set of interfaces." ::= { dot3 5 } dot3CollEntry OBJECT-TYPE SYNTAX Dot3CollEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "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 { dot3CollIndex, dot3CollCount } ::= { dot3CollTable 1 } Dot3CollEntry ::= SEQUENCE { dot3CollIndex INTEGER, dot3CollCount INTEGER, dot3CollFrequencies Counter } dot3CollIndex OBJECT-TYPE SYNTAX INTEGER ACCESS read-only STATUS mandatory DESCRIPTION "The index value that uniquely identifies the interface to which a particular collision histogram cell pertains. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex." ::= { dot3CollEntry 1 } dot3CollCount OBJECT-TYPE SYNTAX INTEGER (1..16) ACCESS read-only STATUS mandatory DESCRIPTION "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-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "A count of individual MAC frames for which the transmission (successful or otherwise) on a particular interface is accompanied by a particular number of media collisions." ::= { dot3CollEntry 3 } -- 802.3 Tests -- The ifExtnsTestTable defined in RFC 1229 provides a common -- means for a manager to test any interface corresponding to -- a value of ifIndex. -- At this time, one well known test (testFullDuplexLoopBack) is -- defined in RFC 1229. For ethernet-like interfaces, this test -- configures the MAC chip and executes an internal loopback -- test of memory 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 object ifExtnsTestResult -- (defined in RFC 1229) will be set to failed(7). The following -- two OBJECT IDENTIFIERs may be used to provided more -- information as values for the object ifExtnsTestCode in -- RFC 1229: dot3Errors OBJECT IDENTIFIER ::= { dot3 7 } -- couldn't initialize MAC chip for test dot3ErrorInitError OBJECT IDENTIFIER ::= { dot3Errors 1 } -- expected data not received (or not -- received correctly) in loopback test dot3ErrorLoopbackError OBJECT IDENTIFIER ::= { dot3Errors 2 } -- Tests -- TDR Test -- Another test, specific to ethernet-like interfaces with the -- exception of 10BaseT and 10BaseF, is Time-domain Reflectometry (TDR). -- 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. dot3Tests OBJECT IDENTIFIER ::= { dot3 6 } dot3TestTdr OBJECT IDENTIFIER ::= { 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 appropriate instance of ifExtnsTestResult -- contains the OBJECT IDENTIFIER of the MIB object which -- contains the value of this time interval. -- 802.3 Hardware Chipsets -- The object ifExtnsChipSet is provided in RFC 1229 to identify -- the MAC hardware used to communcate on an interface. The -- following hardware chipsets are provided for 802.3: dot3ChipSets OBJECT IDENTIFIER ::= { dot3 8 } dot3ChipSetAMD OBJECT IDENTIFIER ::= { dot3ChipSets 1 } dot3ChipSetAMD7990 OBJECT IDENTIFIER ::= { dot3ChipSetAMD 1 } dot3ChipSetAMD79900 OBJECT IDENTIFIER ::= { dot3ChipSetAMD 2 } dot3ChipSetIntel OBJECT IDENTIFIER ::= { dot3ChipSets 2 } dot3ChipSetIntel82586 OBJECT IDENTIFIER ::= { dot3ChipSetIntel 1 } dot3ChipSetIntel82596 OBJECT IDENTIFIER ::= { dot3ChipSetIntel 2 } dot3ChipSetSeeq OBJECT IDENTIFIER ::= { dot3ChipSets 3 } dot3ChipSetSeeq8003 OBJECT IDENTIFIER ::= { dot3ChipSetSeeq 1 } dot3ChipSetNational OBJECT IDENTIFIER ::= { dot3ChipSets 4 } dot3ChipSetNational8390 OBJECT IDENTIFIER ::= { dot3ChipSetNational 1 } dot3ChipSetNationalSonic OBJECT IDENTIFIER ::= { dot3ChipSetNational 2 } dot3ChipSetFujitsu OBJECT IDENTIFIER ::= { dot3ChipSets 5 } dot3ChipSetFujitsu86950 OBJECT IDENTIFIER ::= { dot3ChipSetFujitsu 1 } dot3ChipSetFujitsu86960 OBJECT IDENTIFIER ::= { dot3ChipSetFujitsu 2 } -- 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 RFC 1155). END
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