RFC 1284
Definitions of Managed Objects for the Ethernet-like Interface Types
RFC 1284: Definitions of Managed Objects for the Ethernet-like Interface Types 🎀
Okay bestie, this is RFC 1284, and it's giving main character energy 💅. It was written by J. Cook, who is the Editor, from Chipcom Corporation, and it's dated December 1991 🍓. It's an IAB standards track protocol under the Network Working Group 🌸. The title block doesn't list anything it obsoletes or updates, so there's nothing to note there ✨.
Network Working Group J. Cook, Editor
Request for Comments: 1284 Chipcom Corporation
December 1991Status of This Memo ✨
Okay so this memo is an extension to the SNMP MIB 🧚. It specifies an IAB standards track protocol for the Internet community, and it's asking for discussion and suggestions for improvements 💬. For the standardization state and status of this protocol, check the current edition of the "IAB Official Protocol Standards" 📚. And the distribution of this memo is unlimited 🦋.
Table of Contents 🌈
1. Abstract............................................... 1
2. The Network Management Framework....................... 1
3. Objects ............................................... 2
3.1 Format of Definitions ................................ 2
4. Overview .............................................. 3
5. Definitions ........................................... 4
5.1 The Generic Ethernet-like Group ...................... 4
5.2 The Ethernet-Like Statistics Group ................... 9
5.3 The Ethernet-like Collision Statistics Group ......... 16
5.4 802.3 Tests .......................................... 17
5.5 802.3 Hardware Chipsets .............................. 18
6. Acknowledgements ...................................... 19
7. References ............................................ 19
Security Considerations................................... 21
Author's Address.......................................... 211. Abstract 💖
This memo defines a piece of the Management Information Base (MIB) for use with network management protocols in TCP/IP-based internets 🌐. Specifically, it defines objects for managing ethernet-like objects 🔌.
2. The Network Management Framework 🧩
The Internet-standard Network Management Framework is made up of three components, and they're all iconic:
- RFC 1155 defines the SMI, which is the set of mechanisms used for describing and naming objects for the purpose of management. RFC 1212 defines a more concise description mechanism, and it's totally consistent with the SMI 🫶.
- RFC 1156 defines MIB-I, the core set of managed objects for the Internet suite of protocols. RFC 1213 defines MIB-II, which is an evolution of MIB-I based on implementation experience and new operational requirements 🙈.
- RFC 1157 defines SNMP, the protocol used for network access to managed objects 🔥.
The Framework also lets new objects be defined for experimentation and evaluation, which is so cute 🧪.
3. Objects 🎀
Managed objects are accessed through a virtual information store, called the Management Information Base or MIB 🗄️. Objects in the MIB are defined using the subset of Abstract Syntax Notation One (ASN.1) [7] that's defined in the SMI 💅. Each object has a name, a syntax, and an encoding ✨. The name is an object identifier, which is an administratively assigned name that specifies an object type 🏷️. The object type together with an object instance is what uniquely identifies one specific instantiation of the object 🔑. For human convenience, we often use a textual string, called the OBJECT DESCRIPTOR, to refer to the object type too 🧁.
The syntax of an object type defines the abstract data structure that matches that object type, and it's written in ASN.1 🧠. The SMI [3] purposely restricts which ASN.1 constructs can be used, and that's on purpose, for simplicity 🌸.
The encoding of an object type is basically how that object type gets represented using its syntax 💜. Tied right up with the syntax and encoding is how the object type is represented when it's being transmitted on the network 📡. The SMI specifies the use of the basic encoding rules of ASN.1 [8], with the additional requirements that SNMP imposes 🦋.
3.1. Format of Definitions 📝
Section 5 contains the specification of every object type in this MIB module ✨. The object types are defined using the conventions in the SMI, as amended by the extensions specified in [13] 🌈.
4. Overview 🧚
Instances of these object types represent attributes of an interface to an ethernet-like communications medium 🔌. Right now, ethernet-like media are identified by three values of the ifType object in the Internet-standard MIB 👑:
ethernet-csmacd(6)
iso88023-csmacd(7)
starLan(11)For these interfaces, the value of the ifSpecific variable in MIB-II [6] has the OBJECT IDENTIFIER value below 🍓:
dot3 OBJECT IDENTIFER ::= { transmission 7 }The definitions here are based on the IEEE 802.3 Layer Management Specification [9], as originally interpreted by Frank Kastenholz of Interlan in [10] 🧁. Implementors of these MIB objects should know that the IEEE document explicitly describes (in the form of Pascal pseudocode) when, where, and how various MAC attributes are measured 🤓. The IEEE document also describes the effects of MAC actions that can be invoked by manipulating instances of the MIB objects defined here 💫.
To the extent that some of the attributes defined in [9] are already represented by previously defined objects in the Internet-standard MIB or in the generic interface extensions MIB [11], those attributes are not redundantly represented by objects in this memo 🙅♀️. Among the attributes represented by objects defined in other memos are the number of octets transmitted or received on a particular interface, the number of frames transmitted or received on a particular interface, the promiscuous status of an interface, the MAC address of an interface, and multicast information associated with an interface 📦.
The relationship between an ethernet-like interface and an interface in the context of the Internet-standard MIB is one-to-one 💖. So the value of an ifIndex object instance can be used directly to identify the corresponding instances of the objects defined here 🫶.
5. Definitions 🎀
RFC1284-MIB DEFINITIONS ::= BEGIN
IMPORTS
Counter, Gauge
FROM RFC1155-SMI
transmission
FROM RFC1213-MIB
OBJECT-TYPE
FROM RFC-1212;
-- This MIB module uses the extended OBJECT-TYPE macro as
-- defined in [13]
-- this is the MIB module for ethernet-like objects
dot3 OBJECT IDENTIFIER ::= { transmission 7 }
-- the Generic Ethernet-like group
-- Implementation of this group is mandatory for all systems
-- that attach to an ethernet-like medium.
dot3Table OBJECT-TYPE
SYNTAX SEQUENCE OF Dot3Entry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Status information and control variables for a
collection of ethernet-like interfaces attached to
a particular system."
::= { dot3 1 }
dot3Entry OBJECT-TYPE
SYNTAX Dot3Entry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Status information and control variables for a
particular interface to an ethernet-like medium."
INDEX { dot3Index }
::= { dot3Table 1 }
Dot3Entry ::=
SEQUENCE {
dot3Index
INTEGER,
dot3InitializeMac
INTEGER,
dot3MacSubLayerStatus
INTEGER,
dot3MulticastReceiveStatus
INTEGER,
dot3TxEnabled
INTEGER,
dot3TestTdrValue
Gauge
}
dot3Index OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"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."
::= { dot3Entry 1 }
dot3InitializeMac OBJECT-TYPE
SYNTAX INTEGER { initialized(1), uninitialized(2) }
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The initialization status of the MAC and PLS
(Physical Layer Signalling) subsystems for a
particular interface. The value initialized(1)
signifies that the subsystems for a particular
interface have been previously initialized; the
value uninitialized(2) signifies that they have
not been previously initialized.
Each alteration of an instance of this object to
either of the values initialized(1) or
uninitialized(2) is analogous to an invocation of
the initializeMAC action defined in [9] and has
the effect of (re-)initializing the MAC and PLS
subsystems for the associated interface. In
particular,
all management counters pertaining to the MAC
and PLS subsystems for said interface are
reset to zero;
the receive and transmit layer management
state variables (receiveEnabled and
transmitEnabled in [9]) are set to enable
reception and transmission of frames;
the promiscuous receive function is disabled;
and
multicast reception is disabled."
::= { dot3Entry 2 }
dot3MacSubLayerStatus OBJECT-TYPE
SYNTAX INTEGER { enabled(1), disabled(2) }
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The operational status of the MAC sublayer for a
particular interface. The value enabled(1)
signifies that the MAC sublayer for said interface
is operational for both transmitting and receiving
frames -- that is, that the value of both the
receive and transmit layer management state
variables (receiveEnabled and transmitEnabled in
[9]) for said interface are true. The value
disabled(2) signifies that the MAC sublayer for
said interface is not operational for either
transmitting or receiving frames. In particular,
the value of an instance of this object is
disabled(2) whenever the value of the
corresponding instance of the dot3Enabled object
is false(2).
Each alteration of an instance of this object to
the value enabled(1) is analogous to an invocation
of the enableMACSublayer action defined in [9] and
has the effect of starting normal transmit and
receive operations (from the ``idle'' state) on
the associated interface. In particular, such an
alteration has the effect of resetting the PLS for
said interface and of setting the receive and
transmit layer management state variables
(receiveEnabled and transmitEnabled in [9]) to be
true.🦋 Okay that's the first chunk of the MIB module, and the definitions keep going from here, so stay tuned for the next part 💖🧚✨
Each alteration of an instance of this object to the value disabled(2) is analogous to an invocation of the disableMACSublayer action defined in [9] and has the effect of terminating transmit and receive operations on the associated interface. In particular, such an alteration has the effect of setting the receive and transmit layer management state variables (receiveEnabled and transmitEnabled in [9]) to be false. Any transmissions/receptions in progress are completed before operation is terminated." ::= { dot3Entry 3 }
dot3MulticastReceiveStatus OBJECT-TYPE SYNTAX INTEGER { enabled(1), disabled(2) } ACCESS read-write STATUS mandatory DESCRIPTION "The multicast receive status for a particular interface. The value enabled(1) signifies that reception of multicast frames by the MAC sublayer is enabled on said interface. The value disabled(2) signifies that reception of multicast frames by the MAC sublayer is not enabled on said interface.
Each alteration of an instance of this object to the value enabled(1) is analogous to an invocation of the enableMulticastReceive action defined in [9] and has the effect of enabling multicast frame reception on the associated interface. Actual reception of multicast frames is only possible on an interface when the values for the associated instances of the dot3MulticastReceiveStatus and dot3MacSubLayerStatus objects are enabled(1) and enabled(1), respectively.
Each alteration of an instance of this object to the value disabled(2) is analogous to an invocation of the disableMulticastReceive action defined in [9] and has the effect of inhibiting multicast frame reception on the associated interface." ::= { dot3Entry 4 }
dot3TxEnabled OBJECT-TYPE SYNTAX INTEGER { true(1), false(2) } ACCESS read-write STATUS mandatory DESCRIPTION "The transmit layer management state variable (transmitEnabled as defined in [9]) for a particular interface. The value true(1) signifies that the MAC frame transmission is enabled on said interface. The value false(2) signifies that the MAC frame transmission is inhibited on said interface. In particular, the value of an instance of this object is false(2) whenever the value of the corresponding instance of the dot3MacSubLayerStatus object is disabled(2).
Each alteration of an instance of this object to the value true(1) is analogous to an invocation of the enableTransmit action defined in [9] and has the effect of enabling MAC sublayer frame transmission on the associated interface. In particular, such an alteration has the effect of setting the transmit layer management state variable (transmitEnabled in [9]) for said interface to be true.
Each alteration of an instance of this object to the value false(2) is analogous to an invocation of the disableTransmit action defined in [9] and has the effect of inhibiting MAC sublayer frame transmission on the associated interface. In particular, such an alteration has the effect of setting the transmit layer management state variable (transmitEnabled in [9]) for said interface to be false. Any transmissions in progress are completed before transmission is inhibited." ::= { dot3Entry 5 }
dot3TestTdrValue OBJECT-TYPE SYNTAX Gauge ACCESS read-only STATUS mandatory DESCRIPTION "The number of 10 MHz ticks which elapsed between the beginning of a TDR measurement and the collision which ended it, for the most recently executed TDR test. If no TDR test has been executed, or the last TDR value is not available, this object has the value 0." ::= { dot3Entry 6 }
-- the Ethernet-like Statistics group
-- Implementation of this group is mandatory
-- Due to implementation restrictions (e.g. in the -- instrumentation provided by a chipset, or a device -- driver), some of the counters in this group may be -- difficult or impossible to implement. -- In such cases, an implementator should apply reasonable -- best effort to detect as many occurrences as possible. -- In any case, the value of a counter will be the number -- actually detected, which will always be less or equal -- to the number of actual occurrences. In the extreme -- case of a total inability to detect occurrences, the -- counter will always be zero.
-- Vendors are strongly encouraged to document in user guides and -- other appropriate documentation the conditions under which the -- values of the counters in this group may represent an -- underestimate of the true count.
dot3StatsTable OBJECT-TYPE SYNTAX SEQUENCE OF Dot3StatsEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "Statistics for a collection of ethernet-like interfaces attached to a particular system." ::= { dot3 2 }
dot3StatsEntry OBJECT-TYPE SYNTAX Dot3StatsEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "Statistics for a particular interface to an ethernet-like medium." INDEX { dot3StatsIndex } ::= { dot3StatsTable 1 }
Dot3StatsEntry ::= SEQUENCE { dot3StatsIndex INTEGER, dot3StatsAlignmentErrors Counter, dot3StatsFCSErrors Counter,
dot3StatsSingleCollisionFrames Counter, dot3StatsMultipleCollisionFrames Counter, dot3StatsSQETestErrors Counter, dot3StatsDeferredTransmissions Counter, dot3StatsLateCollisions Counter, dot3StatsExcessiveCollisions Counter, dot3StatsInternalMacTransmitErrors Counter, dot3StatsCarrierSenseErrors Counter, dot3StatsExcessiveDeferrals Counter, dot3StatsFrameTooLongs Counter, dot3StatsInRangeLengthErrors Counter, dot3StatsOutOfRangeLengthFields Counter, dot3StatsInternalMacReceiveErrors Counter }
dot3StatsIndex OBJECT-TYPE SYNTAX INTEGER ACCESS read-only STATUS mandatory DESCRIPTION "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-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "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 [9], counted exclusively according to the error status presented to the LLC." ::= { dot3StatsEntry 2 }
dot3StatsFCSErrors OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "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 [9], counted exclusively according to the error status presented to the LLC." ::= { dot3StatsEntry 3 }
dot3StatsSingleCollisionFrames OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "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 or ifOutNUcastPkts object and is not counted by the corresponding instance of the dot3StatsMultipleCollisionFrames object." ::= { dot3StatsEntry 4 }
dot3StatsMultipleCollisionFrames OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory 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 or ifOutNUcastPkts object and is not counted by the corresponding instance of the dot3StatsSingleCollisionFrames object." ::= { dot3StatsEntry 5 }
dot3StatsSQETestErrors OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "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 [12] and its generation is described in section 7.2.4.6 of the same document." ::= { dot3StatsEntry 6 }
dot3StatsDeferredTransmissions OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "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." ::= { dot3StatsEntry 7 }
okay so the dot3Stats counters keep going, and these ones are about collisions and errors that happen while sending or receiving frames 🔥💀 the way the timing details are spelled out is kinda iconic ngl
dot3StatsLateCollisions OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
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."
::= { dot3StatsEntry 8 }
dot3StatsExcessiveCollisions OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A count of frames for which transmission on a
particular interface fails due to excessive
collisions."
::= { dot3StatsEntry 9 }
dot3StatsInternalMacTransmitErrors OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"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, the
dot3StatsCarrierSenseErrors object, or the
dot3StatsExcessiveDeferrals 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."
::= { 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."
::= { dot3StatsEntry 11 }
dot3StatsExcessiveDeferrals OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A count of frames for which transmission on a
particular interface is deferred for an excessive
period of time."
::= { dot3StatsEntry 12 }
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 [9], counted exclusively
according to the error status presented to the
LLC."
::= { dot3StatsEntry 13 }
dot3StatsInRangeLengthErrors OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A count of frames received on a particular
interface with a length field value that falls
between the minimum unpadded LLC data size and the
maximum allowed LLC data size inclusive and that
does not match the number of LLC data octets
received.
The count represented by an instance of this
object also includes frames for which the length
field value is less than the minimum unpadded LLC
data size."
::= { dot3StatsEntry 14 }
dot3StatsOutOfRangeLengthFields OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A count of frames received on a particular
interface for which the length field value exceeds
the maximum allowed LLC data size.
The count represented by an instance of this
object is not incremented in implementations that
observe Ethernet encapsulation conventions (by
which the IEEE 802.3 length field is interpreted
as the Ethernet Type field)."
::= { dot3StatsEntry 15 }
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, the
dot3StatsFCSErrors object, the
dot3StatsInRangeLengthErrors object, or the
dot3StatsOutOfRangeLengthFields 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."
::= { 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 [11] 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 [11]. 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 [11]) 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 [11]:
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 }
-- TDR Test
-- Another test, specific to ethernet-like interfaces,
-- is Time-domain Reflectometry (TDR) which is defined
-- as follows:
dot3Tests OBJECT IDENTIFIER ::= { dot3 6 }
dot3TestTdr OBJECT IDENTIFIER ::= { dot3Tests 1 }
-- A TDR test returns as its result the time interval between the
-- most recent TDR test transmission and the subsequent detection
-- of a collision. This interval is based on a 10 MHz clock and
-- should be normalized if the time base is other than 10 MHz.
-- 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 instance
-- is stored in the corresponding instance of ifExtnsTestResult
-- (thereby indicating where the result has been stored).
-- 802.3 Hardware Chipsets
-- The object ifExtnsChipSet is provided in [11] 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 }that's the end of the definitions I'm covering here 🧚💜
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 }
-- 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 [3]).
END6. Acknowledgements 🫶
okay bestie, this section is all about the people who made this MIB happen 💖
This document was produced by the Transmission MIB Working Group 🦋
This doc is based on a document written by Frank Kastenholz of Interlan, titled IEEE 802.3 Layer Management Draft M compatible MIB for TCP/IP Networks [10]. It got modestly reworked first by the SNMP Working Group, then by the Transmission Working Group, so it matches the current conventions for defining objects for MIB interfaces ✨ James Davin (MIT Laboratory for Computer Science) and Keith McCloghrie (Hughes LAN Systems) helped with later drafts 🌸 Marshall Rose of Performance Systems International, Inc. turned the document into its current concise format 💅 And thanks to Frank Kastenholz of Interlan and Louis Steinberg of IBM for their experimentation 🎀
7. References 📚
okay so here's the reading list, and every single one matters 🤓
- [1] Cerf, V., "IAB Recommendations for the Development of Internet Network Management Standards", RFC 1052, NRI, April 1988.
- [2] Cerf, V., "Report of the Second Ad Hoc Network Management Review Group", RFC 1109, NRI, August 1989.
- [3] Rose M., and K. McCloghrie, "Structure and Identification of Management Information for TCP/IP-based internets", RFC 1155, Performance Systems International, Hughes LAN Systems, May 1990.
- [4] McCloghrie K., and M. Rose, "Management Information Base for Network Management of TCP/IP-based internets", RFC 1156, Hughes LAN Systems, Performance Systems International, May 1990.
- [5] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple Network Management Protocol", RFC 1157, SNMP Research, Performance Systems International, Performance Systems International, MIT Laboratory for Computer Science, May 1990.
- [6] McCloghrie K., and M. Rose, Editors, "Management Information Base for Network Management of TCP/IP-based internets", RFC 1213, Performance Systems International, March 1991.
- [7] Information processing systems - Open Systems Interconnection - Specification of Abstract Syntax Notation One (ASN.1), International Organization for Standardization, International Standard 8824, December 1987.
- [8] Information processing systems - Open Systems Interconnection - Specification of Basic Encoding Rules for Abstract Notation One (ASN.1), International Organization for Standardization, International Standard 8825, December 1987.
- [9] IEEE, "IEEE 802.3 Layer Management", November 1988.
- [10] Kastenholz, F., IEEE 802.3 Layer Management Draft compatible MIB for TCP/IP Networks, electronic mail message to mib-wg@nnsc.nsf.net, 9 June 1989.
- [11] McCloghrie, K., Editor, "Extensions to the Generic-Interface MIB", RFC 1229, Hughes LAN Systems, Inc., May 1991.
- [12] IEEE, "Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications", ANSI/IEEE Std 802.3-1985.
- [13] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions", RFC 1212, Performance Systems International, Hughes LAN Systems, March 1991.
Security Considerations 🔒
okay, real talk: security issues are not discussed in this memo 💀 so there's nothing to add here, but I'd still keep it in mind when you deploy anything, periodt 🙈
Author's Address 🧚
John Cook Chipcom Corporation 118 Turnpike Road Southborough, MA 01772
for more info, contact the chair of the Ethernet MIB working group:
Frank Kastenholz Clearpoint Research Inc 35 Parkwood Drive Hopkinton Mass 01748
Phone: 508-435-2000 EMail: kasten@europa.clearpoint.com
📦 where this page comes from
- ietf: rfc1284 1991-12
- 💖 girlified by claude-haiku-5-5 on : a language model's rewrite of the original, under its terms