This data type is used as the syntax of the
ifMauMediaAvailable and rpMauMediaAvailable objects in the
(updated) definition of MAU-MIB's ifMauTable and rpMauTable
respectively.
Possible values are:
other(1) - undefined (not listed below)
unknown(2) - MAU's true state is unknown; e.g.,
during initialization
available(3) - link, light, or loopback is normal
notAvailable(4) - link loss, low light, or no loopback
remoteFault(5) - 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
invalidSignal(6) - invalid signal has been received from
the other end of the link, 10BASE-FB
only
remoteJabber(7) - remote fault, due to jabber
remoteLinkLoss(8) - remote fault, due to link loss
remoteTest(9) - remote fault, due to test
offline(10) - offline, Clause 37 Auto-Negotiation
only
autoNegError(11) - Auto-Negotiation Error, Clause 37
Auto-Negotiation only
pmdLinkFault(12) - PMA/PMD receive link fault. In case
of PAF (2BASE-TL / 10PASS-TS PHYs),
all PMEs in the aggregation group have
detected a link fault
wisFrameLoss(13) - WIS loss of frame, 10GBASE-W only
wisSignalLoss(14) - WIS loss of signal, 10GBASE-W only
pcsLinkFault(15) - PCS receive link fault
excessiveBER(16) - PCS Bit Error Ratio monitor
reporting excessive error ratio
dxsLinkFault(17) - DTE XGXS receive link fault, XAUI only
pxsLinkFault(18) - PHY XGXS receive link fault, XAUI only
availableReduced(19) - link normal, reduced bandwidth,
2BASE-TL / 10PASS-TS only
ready(20) - at least one PME in the aggregation
group is detecting handshake tones,
2BASE-TL / 10PASS-TS only
If the MAU is a 10M b/s 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, 10BASE2, 10BASE5, or
10BROAD36 MAU, this indicates whether loopback is detected on
the DI circuit. The value of this attribute persists between
packets for MAU types AUI, 10BASE5, 10BASE2, 10BROAD36, and
10BASEFP.
At power-up or following a reset, the Media Available state
will be unknown(2) for AUI, 10BASE5, 10BASE2, 10BROAD36, 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 Media
Available state will only change during noncollided
transmissions for AUI, 10BASE2, 10BASE5, 10BROAD36, and
10BASE-FP MAUs.
For 100BASE-T2, 100BASE-T4, 100BASE-TX, 100BASE-FX,
100BASE-LX10, and 100BASE-BX10 PHYs the enumerations match the
states within the link integrity state diagram.
Any MAU that implements management of [IEEE802.3] Clause
28 Auto-Negotiation, will map remote fault indication to
remoteFault(5).
Any MAU that implements management of Clause 37
Auto-Negotiation, will map the received RF1 and RF2 bits as
follows: Offline maps to offline(10), Link_Failure maps to
remoteFault(5), and Auto-Negotiation Error maps to
autoNegError(11).
The value remoteFault(5) applies to 10BASE-FB remote
fault indication, the 100BASE-X far-end fault indication, and
nonspecified remote faults from a system running Clause 28
Auto-Negotiation.
The value remoteJabber(7), remoteLink loss(8), or remoteTest(9)
SHOULD be used instead of remoteFault(5) where the reason for
remote fault is identified in the remote signaling protocol.
Where a Clause 22 MII or Clause 35 GMII is present, a logic
one in the remote fault bit maps to the value remoteFault(5),
a logic zero in the link status bit maps to the enumeration
notAvailable(4). The value notAvailable(4) takes precedence
over remoteFault(5).
For 2BASE-TL and 10PASS-TS PHYs, the value unknown(2) maps to
the condition where the PHY (PCS with connected PMEs) is
initializing, the value ready(20) maps to the condition where
the interface is down and at least one PME in the aggregation
group is ready for handshake, the value available(3) maps to
the condition where all the PMEs in the aggregation group are
up, the value notAvailable(4) maps to the condition where all
the PMEs in the aggregation group are down and no handshake
tones are detected, the value availableReduced(19) maps to the
condition where the interface is up, a link fault is detected
at the receive direction by one or more PMEs in the
aggregation group, but at least one PME is up and the
enumeration pmdLinkFault(12) maps to the condition where a link
fault is detected at the receive direction by all of the PMEs
in the aggregation group.
For 10 Gb/s the enumerations map to value of the link_fault
variable within the Link Fault Signaling state diagram
as follows: the value OK maps to the value available(3),
the value Local Fault maps to the value notAvailable(4),
and the value Remote Fault maps to the value remoteFault(5).
The value pmdLinkFault(12), wisFrameLoss(13),
wisSignalLoss(14), pcsLinkFault(15), excessiveBER(16), or
dxsLinkFault(17) SHOULD be used instead of the value
notAvailable(4), where the reason for the Local Fault state can
be identified through the use of the Clause 45 MDIO Interface.
Where multiple reasons for the Local Fault state can be
identified, only the highest precedence error SHOULD be
reported. This precedence in descending order is as follows:
pxsLinkFault
pmdLinkFault
wisFrameLoss
wisSignalLoss
pcsLinkFault
excessiveBER
dxsLinkFault.
Where a Clause 45 MDIO interface is present a logic zero in
the PMA/PMD Receive link status bit ([IEEE802.3]
Section 45.2.1.2.2) maps to the value pmdLinkFault(12),
logic one in the LOF status bit (Section 45.2.2.10.4) maps
to the value wisFrameLoss(13), a logic one in the LOS
status bit (Section 45.2.2.10.5) maps to the value
wisSignalLoss, a logic zero in the PCS Receive
link status bit (Section 45.2.3.2.2) maps to the value
pcsLinkFault(15), a logic one in the 10GBASE-R PCS Latched
high BER status bit (Section 45.2.3.12.2) maps to the value
excessiveBER, a logic zero in the DTE XS receive link status
bit (Section 45.2.5.2.2) maps to the value dxsLinkFault(17)
and a logic zero in the PHY XS transmit link status bit
(Section 45.2.4.2.2) maps to the value pxsLinkFault(18).
The most recent version of this textual convention is available
in the online version of this MIB module on the IANA web site.
Requests for new values should be made to IANA via email
(iana&iana.org). |
|
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), availableReduced(19), ready(20) |
|