If the MAU type is unknown, the object identifier
unknownMauType OBJECT IDENTIFIER ::= { 0 0 }
is returned. Note that unknownMauType is a
syntactically valid object identifier, and any
conformant implementation of ASN.1 and the BER
must be able to generate and recognize this
value.
This object represents the operational type of
the MAU, 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 this MAU, by the value of the
object ifMauDefaultType. In case (2), a set to
the object ifMauDefaultType will force the MAU
into the new operating mode."
REFERENCE "[IEEE 802.3 Std], 30.5.1.1.2, aMAUType."
::= { ifMauEntry 3 }
ifMauStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
unknown(2),
operational(3),
standby(4),
shutdown(5),
reset(6)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION "The current state of the MAU. This object MAY
be implemented as a read-only object by those
agents and MAUs that do not implement software
control of the MAU state. Some agents may not
support setting the value of this object to some
of the enumerated values.
The value other(1) is returned if the MAU is in
a state other than one of the states 2 through
6.
The value unknown(2) is returned when the MAU’s
true state is unknown; for example, when it is
being initialized.
A MAU in the operational(3) state is fully
functional, operates, and passes signals to its
attached DTE or repeater port in accordance to
its specification.
A MAU in standby(4) state forces DI and CI to
idle and the media transmitter to idle or fault,
if supported. Standby(4) mode only applies to
link type MAUs. The state of
ifMauMediaAvailable is unaffected.
A MAU in shutdown(5) state assumes the same
condition on DI, CI, and the media transmitter
as though it were powered down or not connected.
The MAU MAY return other(1) value for the
ifMauJabberState and ifMauMediaAvailable objects
when it is in this state. For an AUI, this
state will remove power from the AUI.
Setting this variable to the value reset(6)
resets the MAU in the same manner as a
power-off, power-on cycle of at least one-half
second would. The agent is not required to
return the value reset (6).
Setting this variable to the value
operational(3), standby(4), or shutdown(5)
causes the MAU to assume the respective state
except that setting a mixing-type MAU or an AUI
to standby(4) will cause the MAU to enter the
shutdown state."
REFERENCE "[IEEE 802.3 Std], 30.5.1.1.7, aMAUAdminState,
30.5.1.2.2, acMAUAdminControl, and 30.5.1.2.1,
acResetMAU."
::= { ifMauEntry 4 }
ifMauMediaAvailable OBJECT-TYPE
SYNTAX INTEGER {
other(1),
unknown(2),
available(3),
notAvailable(4),
remoteFault(5),
invalidSignal(6),
remoteJabber(7),
remoteLinkLoss(8),
remoteTest(9),
offline(10),
autoNegError(11),
pmdLinkFault(12),
wisFrameLoss(13),
wisSignalLoss(14),
pcsLinkFault(15),
excessiveBER(16),
dxsLinkFault(17),
pxsLinkFault(18)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION "If the MAU is a link or fiber type (FOIRL,
10BASE-T, 10BASE-F) then this is equivalent to
the link test fail state/low light function.
For an AUI or a coax (including broadband) MAU
this indicates whether or not loopback is
detected on the DI circuit. The value of this
attribute persists between packets for MAU types
AUI, 10BASE5, 10BASE2, 10BROAD36, and 10BASE-FP.
The value other(1) is returned if the
mediaAvailable state is not one of 2 through 18.
The value unknown(2) is returned when the MAU’s
true state is unknown; for example, when it is
being initialized. At power-up or following a
reset, the value of this attribute will be
unknown for AUI, coax, and 10BASE-FP MAUs. For
these MAUs loopback will be tested on each
transmission during which no collision is
detected. If DI is receiving input when DO
returns to IDL after a transmission and there
has been no collision during the transmission
then loopback will be detected. The value of
this attribute will only change during
non-collided transmissions for AUI, coax, and
10BASE-FP MAUs.
For 100Mbps and 1000Mbps MAUs, the enumerations
match the states within the respective link
integrity state diagrams, fig 32-16, 23-12 and
24-15 of sections 32, 23 and 24 of [IEEE802.3].
Any MAU which implements management of
auto-negotiation will map remote fault
indication to remote fault.
The value available(3) indicates that the link,
light, or loopback is normal. The value
notAvailable(4) indicates link loss, low light,
or no loopback.
The value remoteFault(5) indicates that a fault
has been detected at the remote end of the link.
This value applies to 10BASE-FB, 100BASE-T4 Far
End Fault Indication and non-specified remote
faults from a system running auto-negotiation.
The values remoteJabber(7), remoteLinkLoss(8),
and remoteTest(9) SHOULD be used instead of
remoteFault(5) where the reason for remote fault
is identified in the remote signaling protocol.
The value invalidSignal(6) indicates that an
invalid signal has been received from the other
end of the link. invalidSignal(6) applies only
to MAUs of type 10BASE-FB.
Where an IEEE Std 802.3-2002 clause 22 MII
is present, a logic one in the remote fault bit
(reference section 22.2.4.2.8 of that document)
maps to the value remoteFault(5), and a logic
zero in the link status bit (reference section
22.2.4.2.10 of that document) maps to the value
notAvailable(4). The value notAvailable(4)
takes precedence over the value remoteFault(5).
Any MAU that implements management of clause 37
Auto-Negotiation will map the received RF1 and
RF2 bit values for Offline to offline(10), Link
Failure to remoteFault(5) and Auto-Negotiation
Error to autoNegError(11).
For 10 Gb/s, the enumerations map to the states
within the Reconciliation Sublayer state diagram
as follows:
NoFault maps to the enumeration ’available(3)’
LocalFault maps to the enumeration
’notAvailable(4)’
RemoteFault maps to the enumeration
’remoteFault(5)’
The enumerations ’pmdLinkFault(12)’,
’wisFrameLoss(13)’, ’wisSignalLoss(14)’,
’pcsLinkFault(15)’, ’excessiveBER(16)’, and
’dxsLinkFault(17)’ and ’pxsLinkFault(18)’ should
be used instead of the enumeration
’notAvailable(4)’ where the reason for the local
fault can be identified through the use of the
MDIO Interface. Where multiple reasons for the
local fault state can be identified only the
highest precedence error should be reported.
The precedence in descending order is as
follows:
pxsLinkFault
pmdLinkFault
wisFrameLoss
wisSignalLoss
pcsLinkFault
excessiveBER
dxsLinkFault"
REFERENCE "[IEEE 802.3 Std], 30.5.1.1.4, aMediaAvailable."
::= { ifMauEntry 5 }
ifMauMediaAvailableStateExits OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "A count of the number of times that
ifMauMediaAvailable for this MAU instance leaves
the state available(3).
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."
REFERENCE "[IEEE 802.3 Std], 30.5.1.1.5,
aLoseMediaCounter.
RFC 2863, ifCounterDiscontinuityTime."
::= { ifMauEntry 6 }
ifMauJabberState OBJECT-TYPE
SYNTAX INTEGER {
other(1),
unknown(2),
noJabber(3),
jabbering(4)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION "The value other(1) is returned if the jabber
state is not 2, 3, or 4. The agent MUST always
return other(1) for MAU type dot3MauTypeAUI.
The value unknown(2) is returned when the MAU’s
true state is unknown; for example, when it is
being initialized.
If the MAU is not jabbering the agent returns
noJabber(3). This is the ’normal’ state.
If the MAU is in jabber state the agent returns
the jabbering(4) value."
REFERENCE "[IEEE 802.3 Std], 30.5.1.1.6,
aJabber.jabberFlag."
::= { ifMauEntry 7 }
ifMauJabberingStateEnters OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "A count of the number of times that
mauJabberState for this MAU instance enters the
state jabbering(4). This counter will always
indicate zero for MAUs of type dot3MauTypeAUI
and those of speeds above 10Mbps.
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."
REFERENCE "[IEEE 802.3 Std], 30.5.1.1.6,
aJabber.jabberCounter.
RFC 2863, ifCounterDiscontinuityTime."
::= { ifMauEntry 8 }
ifMauFalseCarriers OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "A count of the number of false carrier events
during IDLE in 100BASE-X and 1000BASE-X links.
For all other MAU types, this counter will
always indicate zero. This counter does not
increment at the symbol rate.
It can increment after a valid carrier
completion at a maximum rate of once per 100 ms
for 100BASE-X and once per 10us for 1000BASE-X
until the next CarrierEvent.
This counter can roll over very quickly. A
management station is advised to poll the
ifMauHCFalseCarriers instead of this counter in
order to avoid loss of information.
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."
REFERENCE "[IEEE 802.3 Std], 30.5.1.1.10, aFalseCarriers.
RFC 2863, ifCounterDiscontinuityTime."
::= { ifMauEntry 9 }
ifMauTypeList OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION "********* THIS OBJECT IS DEPRECATED **********
This object has been deprecated in favour of