RFC 4319
Definitions of Managed Objects for High Bit-Rate DSL - 2nd generation (HDSL2) and Single-Pair High-Speed Digital Subscriber Line (SHDSL) Lines
hdsl2ShdslEndpointThreshLoopAttenuation OBJECT-TYPE
SYNTAX Integer32(-127..128)
UNITS "dB"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object configures the loop attenuation alarm threshold.
When the current value of hdsl2ShdslEndpointCurrAtn reaches
or exceeds this threshold, an hdsl2ShdslLoopAttenCrossing
MAY be generated."
DEFVAL { 0 }
::= { hdsl2ShdslEndpointAlarmConfProfileEntry 2 }
hdsl2ShdslEndpointThreshSNRMargin OBJECT-TYPE
SYNTAX Integer32(-127..128)
UNITS "dB"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object configures the SNR margin alarm threshold.
When the current value of hdsl2ShdslEndpointCurrSnrMgn
reaches or drops below this threshold, a
hdsl2ShdslSNRMarginCrossing MAY be generated."
DEFVAL { 0 }
::= { hdsl2ShdslEndpointAlarmConfProfileEntry 3 }
hdsl2ShdslEndpointThreshES OBJECT-TYPE
SYNTAX Hdsl2ShdslPerfIntervalThreshold
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object configures the threshold for the number of
Errored Seconds (ES) within any given 15-minute performance
data collection interval. If the value of Errored Seconds
in a particular 15-minute collection interval reaches/
exceeds this value, an hdsl2ShdslPerfESThresh MAY be
generated. At most, one notification will be sent per
interval per endpoint."
DEFVAL { 0 }
::= { hdsl2ShdslEndpointAlarmConfProfileEntry 4 }
hdsl2ShdslEndpointThreshSES OBJECT-TYPE
SYNTAX Hdsl2ShdslPerfIntervalThreshold
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object configures the threshold for the number of
Severely Errored Seconds (SES) within any given 15-minute
performance data collection interval. If the value of
Severely Errored Seconds in a particular 15-minute collection
interval reaches/exceeds this value, an hdsl2ShdslPerfSESThresh
MAY be generated. At most, one notification will be sent per
interval per endpoint."
DEFVAL { 0 }
::= { hdsl2ShdslEndpointAlarmConfProfileEntry 5 }
hdsl2ShdslEndpointThreshCRCanomalies OBJECT-TYPE
SYNTAX Integer32
UNITS "detected CRC Anomalies"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object configures the threshold for the number of
CRC anomalies within any given 15-minute performance data
collection interval. If the value of CRC anomalies in a
particular 15-minute collection interval reaches/exceeds
this value, an hdsl2ShdslPerfCRCanomaliesThresh MAY be
generated. At most, one notification will be sent per
interval per endpoint."
DEFVAL { 0 }
::= { hdsl2ShdslEndpointAlarmConfProfileEntry 6 }
hdsl2ShdslEndpointThreshLOSWS OBJECT-TYPE
SYNTAX Hdsl2ShdslPerfIntervalThreshold
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object configures the threshold for the number of
Loss of Sync Word (LOSW) Seconds within any given 15-minute
performance data collection interval. If the value of LOSW
in a particular 15-minute collection interval reaches/exceeds
this value, an hdsl2ShdslPerfLOSWSThresh MAY be generated.
At most, one notification will be sent per interval per
endpoint."
DEFVAL { 0 }
::= { hdsl2ShdslEndpointAlarmConfProfileEntry 7 }
hdsl2ShdslEndpointThreshUAS OBJECT-TYPE
SYNTAX Hdsl2ShdslPerfIntervalThreshold
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object configures the threshold for the number of
Unavailable Seconds (UAS) within any given 15-minute
performance data collection interval. If the value of UAS
in a particular 15-minute collection interval reaches/exceeds
this value, an hdsl2ShdslPerfUASThresh MAY be generated.
At most, one notification will be sent per interval per
endpoint."
DEFVAL { 0 }
::= { hdsl2ShdslEndpointAlarmConfProfileEntry 8 }
hdsl2ShdslEndpointAlarmConfProfileRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object controls creation/deletion of the associated
entry in this table as per the semantics of RowStatus.
If an active entry is referenced in either
hdsl2ShdslSpanConfAlarmProfile or
hdsl2ShdslEndpointAlarmConfProfile, the entry MUST remain
active until all references are removed."
::= { hdsl2ShdslEndpointAlarmConfProfileEntry 9 }
-- Notifications Group
--
hdsl2ShdslNotifications OBJECT IDENTIFIER ::= { hdsl2ShdslMIB 0 }
hdsl2ShdslLoopAttenCrossing NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurrAtn,
hdsl2ShdslEndpointThreshLoopAttenuation
}
STATUS current
DESCRIPTION
"This notification indicates that the loop attenuation
threshold (as per the hdsl2ShdslEndpointThreshLoopAttenuation
value) has been reached/exceeded for the HDSL2/SHDSL segment
endpoint."
::= { hdsl2ShdslNotifications 1 }
hdsl2ShdslSNRMarginCrossing NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurrSnrMgn,
hdsl2ShdslEndpointThreshSNRMargin
}
STATUS current
DESCRIPTION
"This notification indicates that the SNR margin threshold (as
per the hdsl2ShdslEndpointThreshSNRMargin value) has been
reached/exceeded for the HDSL2/SHDSL segment endpoint."
::= { hdsl2ShdslNotifications 2 }
hdsl2ShdslPerfESThresh NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurr15MinES,
hdsl2ShdslEndpointThreshES
}
STATUS current
DESCRIPTION
"This notification indicates that the errored seconds
threshold (as per the hdsl2ShdslEndpointThreshES value)
has been reached/exceeded for the HDSL2/SHDSL segment
endpoint."
::= { hdsl2ShdslNotifications 3 }
hdsl2ShdslPerfSESThresh NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurr15MinSES,
hdsl2ShdslEndpointThreshSES
}
STATUS current
DESCRIPTION
"This notification indicates that the severely errored seconds
threshold (as per the hdsl2ShdslEndpointThreshSES value) has
been reached/exceeded for the HDSL2/SHDSL segment endpoint."
::= { hdsl2ShdslNotifications 4 }
hdsl2ShdslPerfCRCanomaliesThresh NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurr15MinCRCanomalies,
hdsl2ShdslEndpointThreshCRCanomalies
}
STATUS current
DESCRIPTION
"This notification indicates that the CRC anomalies threshold
(as per the hdsl2ShdslEndpointThreshCRCanomalies value) has
been reached/exceeded for the HDSL2/SHDSL segment endpoint."
::= { hdsl2ShdslNotifications 5 }
hdsl2ShdslPerfLOSWSThresh NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurr15MinLOSWS,
hdsl2ShdslEndpointThreshLOSWS
}
STATUS current
DESCRIPTION
"This notification indicates that the LOSW Seconds threshold
(as per the hdsl2ShdslEndpointThreshLOSWS value) has been
reached/exceeded for the HDSL2/SHDSL segment endpoint."
::= { hdsl2ShdslNotifications 6 }
hdsl2ShdslPerfUASThresh NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurr15MinUAS,
hdsl2ShdslEndpointThreshUAS
}
STATUS current
DESCRIPTION
"This notification indicates that the unavailable seconds
threshold (as per the hdsl2ShdslEndpointThreshUAS value) has
been reached/exceeded for the HDSL2/SHDSL segment endpoint."
::= { hdsl2ShdslNotifications 7 }
hdsl2ShdslSpanInvalidNumRepeaters NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslSpanConfNumRepeaters
}
STATUS current
DESCRIPTION
"This notification indicates that a mismatch has been detected
between the number of repeater/regenerator units configured
for an HDSL2/SHDSL line via the hdsl2ShdslSpanConfNumRepeaters
object and the actual number of repeater/regenerator units
discovered via the EOC."
::= { hdsl2ShdslNotifications 8 }
hdsl2ShdslLoopbackFailure NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslMaintLoopbackConfig
}
STATUS current
DESCRIPTION
"This notification indicates that an endpoint maintenance
loopback command failed for an HDSL2/SHDSL segment."
::= { hdsl2ShdslNotifications 9 }
hdsl2ShdslpowerBackoff NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurrStatus
}
STATUS current
DESCRIPTION
"This notification indicates that the bit setting for
powerBackoff in the hdsl2ShdslEndpointCurrStatus object for
this endpoint has changed."
::= { hdsl2ShdslNotifications 10 }
hdsl2ShdsldeviceFault NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurrStatus
}
STATUS current
DESCRIPTION
"This notification indicates that the bit setting for
deviceFault in the hdsl2ShdslEndpointCurrStatus object for
this endpoint has changed."
::= { hdsl2ShdslNotifications 11 }
hdsl2ShdsldcContinuityFault NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurrStatus
}
STATUS current
DESCRIPTION
"This notification indicates that the bit setting for
dcContinuityFault in the hdsl2ShdslEndpointCurrStatus object
for this endpoint has changed."
::= { hdsl2ShdslNotifications 12 }
hdsl2ShdslconfigInitFailure NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurrStatus
}
STATUS current
DESCRIPTION
"This notification indicates that the bit setting for
configInitFailure in the hdsl2ShdslEndpointCurrStatus object
for this endpoint has changed."
::= { hdsl2ShdslNotifications 13 }
hdsl2ShdslprotocolInitFailure NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurrStatus
}
STATUS current
DESCRIPTION
"This notification indicates that the bit setting for
protocolInitFailure in the hdsl2ShdslEndpointCurrStatus
object for this endpoint has changed."
::= { hdsl2ShdslNotifications 14 }
hdsl2ShdslnoNeighborPresent NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslEndpointCurrStatus
}
STATUS current
DESCRIPTION
"This notification indicates that the bit setting for
noNeighborPresent in the hdsl2ShdslEndpointCurrStatus object
for this endpoint has changed."
::= { hdsl2ShdslNotifications 15 }
hdsl2ShdslLocalPowerLoss NOTIFICATION-TYPE
OBJECTS
{
hdsl2ShdslInvVendorID
}
STATUS current
DESCRIPTION
"This notification indicates impending unit failure due to
loss of local power (last gasp)."
::= { hdsl2ShdslNotifications 16 }
-- conformance information
--
hdsl2ShdslConformance OBJECT IDENTIFIER ::= { hdsl2ShdslMIB 3 }
hdsl2ShdslGroups OBJECT IDENTIFIER ::=
{ hdsl2ShdslConformance 1 }
hdsl2ShdslCompliances OBJECT IDENTIFIER ::=
{ hdsl2ShdslConformance 2 }
-- agent compliance statements
hdsl2ShdslLineMibCompliance MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"The compliance statement for SNMP entities that implement
HDSL2 and SHDSL. The version of SHDSL supported in this
compliance statement is g.shdsl.
**** This compliance statement is deprecated. ****"
MODULE
MANDATORY-GROUPS
{
hdsl2ShdslSpanConfGroup,
hdsl2ShdslSpanStatusGroup,
hdsl2ShdslInventoryGroup,
hdsl2ShdslEndpointConfGroup,
hdsl2ShdslEndpointCurrGroup,
hdsl2Shdsl15MinIntervalGroup,
hdsl2Shdsl1DayIntervalGroup,
hdsl2ShdslMaintenanceGroup,
hdsl2ShdslEndpointAlarmConfGroup,
hdsl2ShdslNotificationGroup
}
GROUP hdsl2ShdslInventoryShdslGroup
DESCRIPTION
"Support for this group is only required for implementations
supporting SHDSL lines."
GROUP hdsl2ShdslSpanShdslStatusGroup
DESCRIPTION
"Support for this group is only required for implementations
supporting SHDSL lines."
GROUP hdsl2ShdslSpanConfProfileGroup
DESCRIPTION
"Support for this group is only required for implementations
supporting SHDSL lines."
OBJECT hdsl2ShdslSpanConfWireInterface
SYNTAX INTEGER
{
twoWire(1),
fourWire(2)
}
DESCRIPTION
"An implementation only has to support the range as
applicable for the original g.shdsl specification defined
in RFC 3276."
OBJECT hdsl2ShdslStatusMaxAttainableLineRate
SYNTAX Unsigned32(0..4112000)
DESCRIPTION
"An implementation only has to support the range as
applicable for the original g.shdsl specification defined
in RFC 3276."
OBJECT hdsl2ShdslStatusActualLineRate
SYNTAX Unsigned32(0..4112000)
DESCRIPTION
"An implementation only has to support the range as
applicable for the original g.shdsl specification defined
in RFC 3276."
OBJECT hdsl2ShdslSpanConfMinLineRate
SYNTAX Unsigned32(0..4112000)
DESCRIPTION
"An implementation only has to support the range as
applicable for the original g.shdsl specification defined
in RFC 3276."
OBJECT hdsl2ShdslSpanConfMaxLineRate
SYNTAX Unsigned32(0..4112000)
DESCRIPTION
"An implementation only has to support the range as
applicable for the original g.shdsl specification defined
in RFC 3276."
::= { hdsl2ShdslCompliances 1 }
hdsl2GshdslbisLineMibCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for SNMP entities that implement
HDSL2 and SHDSL. The version of SHDSL supported in this
compliance statement is g.shdsl.bis."
MODULE
MANDATORY-GROUPS
{
hdsl2ShdslSpanConfGroup,
hdsl2ShdslSpanStatusGroup,
hdsl2ShdslInventoryGroup,
hdsl2ShdslEndpointConfGroup,
hdsl2ShdslEndpointCurrGroup,
hdsl2Shdsl15MinIntervalGroup,
hdsl2Shdsl1DayIntervalGroup,
hdsl2ShdslMaintenanceGroup,
hdsl2ShdslEndpointAlarmConfGroup,
hdsl2ShdslNotificationGroup
}
GROUP hdsl2ShdslInventoryShdslGroup
DESCRIPTION
"Support for this group is only required for implementations
supporting SHDSL lines."
GROUP hdsl2ShdslSpanShdslStatusGroup
DESCRIPTION
"Support for this group is only required for implementations
supporting SHDSL lines."
GROUP hdsl2ShdslSpanConfProfileGroup
DESCRIPTION
"Support for this group is only required for implementations
supporting SHDSL lines."
GROUP hdsl2ShdslWirePairGroup
DESCRIPTION
"Support for this group is only required for implementations
supporting SHDSL lines."
GROUP hdsl2ShdslPayloadRateGroup
DESCRIPTION
"Support for this group is only required for implementations
supporting SHDSL lines."
::= { hdsl2ShdslCompliances 2 }
-- units of conformance
--
hdsl2ShdslSpanConfGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslSpanConfNumRepeaters,
hdsl2ShdslSpanConfProfile,
hdsl2ShdslSpanConfAlarmProfile
}
STATUS current
DESCRIPTION
"This group supports objects for configuring span-related
parameters for HDSL2/SHDSL lines."
::= { hdsl2ShdslGroups 1 }
hdsl2ShdslSpanStatusGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslStatusNumAvailRepeaters
}
STATUS current
DESCRIPTION
"This group supports objects for retrieving span-related
status for HDSL2/SHDSL lines."
::= { hdsl2ShdslGroups 2 }
hdsl2ShdslInventoryShdslGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslInvTransmissionModeCapability
}
STATUS current
DESCRIPTION
"This group supports objects for retrieving SHDSL-specific
inventory information."
::= { hdsl2ShdslGroups 3 }
hdsl2ShdslSpanShdslStatusGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslStatusMaxAttainableLineRate,
hdsl2ShdslStatusActualLineRate,
hdsl2ShdslStatusTransmissionModeCurrent
}
STATUS current
DESCRIPTION
"This group supports objects for retrieving SHDSL-specific
span-related status."
::= { hdsl2ShdslGroups 4 }
hdsl2ShdslInventoryGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslInvVendorID,
hdsl2ShdslInvVendorModelNumber,
hdsl2ShdslInvVendorSerialNumber,
hdsl2ShdslInvVendorEOCSoftwareVersion,
hdsl2ShdslInvStandardVersion,
hdsl2ShdslInvVendorListNumber,
hdsl2ShdslInvVendorIssueNumber,
hdsl2ShdslInvVendorSoftwareVersion,
hdsl2ShdslInvEquipmentCode,
hdsl2ShdslInvVendorOther
}
STATUS current
DESCRIPTION
"This group supports objects that provide unit inventory
information about the units in HDSL2/SHDSL lines."
::= { hdsl2ShdslGroups 5 }
hdsl2ShdslEndpointConfGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslEndpointCurrAtn
}
STATUS current
DESCRIPTION
"This group supports objects for configuring parameters for
segment endpoints in HDSL2/SHDSL lines."
::= { hdsl2ShdslGroups 6 }
hdsl2ShdslEndpointCurrGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslEndpointCurrAtn,
hdsl2ShdslEndpointCurrSnrMgn,
hdsl2ShdslEndpointCurrStatus,
hdsl2ShdslEndpointES,
hdsl2ShdslEndpointSES,
hdsl2ShdslEndpointCRCanomalies,
hdsl2ShdslEndpointLOSWS,
hdsl2ShdslEndpointUAS,
hdsl2ShdslEndpointCurr15MinTimeElapsed,
hdsl2ShdslEndpointCurr15MinES,
hdsl2ShdslEndpointCurr15MinSES,
hdsl2ShdslEndpointCurr15MinCRCanomalies,
hdsl2ShdslEndpointCurr15MinLOSWS,
hdsl2ShdslEndpointCurr15MinUAS,
hdsl2ShdslEndpointCurr1DayTimeElapsed,
hdsl2ShdslEndpointCurr1DayES,
hdsl2ShdslEndpointCurr1DaySES,
hdsl2ShdslEndpointCurr1DayCRCanomalies,
hdsl2ShdslEndpointCurr1DayLOSWS,
hdsl2ShdslEndpointCurr1DayUAS
}
STATUS current
DESCRIPTION
"This group supports objects that provide current status and
performance measurements relating to segment endpoints in
HDSL2/SHDSL lines."
::= { hdsl2ShdslGroups 7 }
hdsl2Shdsl15MinIntervalGroup OBJECT-GROUP
OBJECTS
{
hdsl2Shdsl15MinIntervalES,
hdsl2Shdsl15MinIntervalSES,
hdsl2Shdsl15MinIntervalCRCanomalies,
hdsl2Shdsl15MinIntervalLOSWS,
hdsl2Shdsl15MinIntervalUAS
}
STATUS current
DESCRIPTION
"This group supports objects that maintain historic
performance measurements relating to segment endpoints in
HDSL2/SHDSL lines in 15-minute intervals."
::= { hdsl2ShdslGroups 8 }
hdsl2Shdsl1DayIntervalGroup OBJECT-GROUP
OBJECTS
{
hdsl2Shdsl1DayIntervalMoniSecs,
hdsl2Shdsl1DayIntervalES,
hdsl2Shdsl1DayIntervalSES,
hdsl2Shdsl1DayIntervalCRCanomalies,
hdsl2Shdsl1DayIntervalLOSWS,
hdsl2Shdsl1DayIntervalUAS
}
STATUS current
DESCRIPTION
"This group supports objects that maintain historic
performance measurements relating to segment endpoints in
HDSL2/SHDSL lines in 1-day intervals."
::= { hdsl2ShdslGroups 9 }
hdsl2ShdslMaintenanceGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslMaintLoopbackConfig,
hdsl2ShdslMaintTipRingReversal,
hdsl2ShdslMaintPowerBackOff,
hdsl2ShdslMaintSoftRestart,
hdsl2ShdslMaintLoopbackTimeout,
hdsl2ShdslMaintUnitPowerSource
}
STATUS current
DESCRIPTION
"This group supports objects that provide support for
maintenance actions for HDSL2/SHDSL lines."
::= { hdsl2ShdslGroups 10 }
hdsl2ShdslEndpointAlarmConfGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslEndpointAlarmConfProfile,
hdsl2ShdslEndpointThreshLoopAttenuation,
hdsl2ShdslEndpointThreshSNRMargin,
hdsl2ShdslEndpointThreshES,
hdsl2ShdslEndpointThreshSES,
hdsl2ShdslEndpointThreshCRCanomalies,
hdsl2ShdslEndpointThreshLOSWS,
hdsl2ShdslEndpointThreshUAS,
hdsl2ShdslEndpointAlarmConfProfileRowStatus
}
STATUS current
DESCRIPTION
"This group supports objects that allow configuration of alarm
thresholds for various performance parameters for HDSL2/SHDSL
lines."
::= { hdsl2ShdslGroups 11 }
hdsl2ShdslNotificationGroup NOTIFICATION-GROUP
NOTIFICATIONS
{
hdsl2ShdslLoopAttenCrossing,
hdsl2ShdslSNRMarginCrossing,
hdsl2ShdslPerfESThresh,
hdsl2ShdslPerfSESThresh,
hdsl2ShdslPerfCRCanomaliesThresh,
hdsl2ShdslPerfLOSWSThresh,
hdsl2ShdslPerfUASThresh,
hdsl2ShdslSpanInvalidNumRepeaters,
hdsl2ShdslLoopbackFailure,
hdsl2ShdslpowerBackoff,
hdsl2ShdsldeviceFault,
hdsl2ShdsldcContinuityFault,
hdsl2ShdslconfigInitFailure,
hdsl2ShdslprotocolInitFailure,
hdsl2ShdslnoNeighborPresent,
hdsl2ShdslLocalPowerLoss
}
STATUS current
DESCRIPTION
"This group supports notifications of significant conditions
associated with HDSL2/SHDSL lines."
::= { hdsl2ShdslGroups 12 }
hdsl2ShdslSpanConfProfileGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslSpanConfWireInterface,
hdsl2ShdslSpanConfMinLineRate,
hdsl2ShdslSpanConfMaxLineRate,
hdsl2ShdslSpanConfPSD,
hdsl2ShdslSpanConfTransmissionMode,
hdsl2ShdslSpanConfRemoteEnabled,
hdsl2ShdslSpanConfPowerFeeding,
hdsl2ShdslSpanConfCurrCondTargetMarginDown,
hdsl2ShdslSpanConfWorstCaseTargetMarginDown,
hdsl2ShdslSpanConfCurrCondTargetMarginUp,
hdsl2ShdslSpanConfWorstCaseTargetMarginUp,
hdsl2ShdslSpanConfUsedTargetMargins,
hdsl2ShdslSpanConfReferenceClock,
hdsl2ShdslSpanConfLineProbeEnable,
hdsl2ShdslSpanConfProfileRowStatus
}
STATUS current
DESCRIPTION
"This group supports objects that constitute configuration
profiles for configuring span-related parameters in SHDSL
lines."
::= { hdsl2ShdslGroups 13 }
hdsl2ShdslWirePairGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslEndpointCurrTipRingReversal,
hdsl2ShdslEndpointCurrActivationState
}
STATUS current
DESCRIPTION
"This group supports objects that provide the status
of SHDSL-specific wire pairs."
::= { hdsl2ShdslGroups 14 }
hdsl2ShdslPayloadRateGroup OBJECT-GROUP
OBJECTS
{
hdsl2ShdslStatusMaxAttainablePayloadRate,
hdsl2ShdslStatusActualPayloadRate
}
STATUS current
DESCRIPTION
"This group supports objects for retrieving payload rates
that exclude any framing overhead."
::= { hdsl2ShdslGroups 15 }
END4. Implementation Analysis
A management application that supports RFC 3276 could mistakenly flag a unit that responds with a rate or wire pair that exceeds the ranges and/or enumerations specified in RFC 3276. For example, a G.shdsl.bis line with four wire pairs would report statistics for wire pairs that do not exist in RFC 3276. That is, a GET-NEXT request issues with the object identifier: hdsl2ShdslEndpointCurrAtn.1.1.1.2 might return hdsl2ShdslEndpointCurrAtn.1.1.1.3 = 0 with a G.shdsl.bis unit and hdsl2ShdslEndpointCurrSnrMgn.1.1.1.1 = 0 with an HDSL2 unit as these objects are indexed by INDEX { ifIndex, hdsl2ShdslInvIndex, hdsl2ShdslendpointSide, hdsl2ShdslEndpointWirePair } A management application intended to manage G.shdsl.bis agents SHOULD be modified to accept this sequence. One should note that this same unmodified management application is still capable of managing G.shdsl.bis agents albeit to the degree of G.SHDSL (non-bis) limitations. That is, it can create and monitor configurations limited to two wire pairs with an upper-rate limit of 4112000 bits/second.5. Security Considerations
There are a number of management objects defined in this MIB module with a MAX-ACCESS clause of read-write and/or read-create. Such objects may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non-secure environment without proper protection can have a negative effect on network operations. These are the tables and objects and their sensitivity/vulnerability:
o hdsl2ShdslSpanConfTable
The table consists of the following objects that support SET
operations:
* hdsl2ShdslSpanConfNumRepeaters
* hdsl2ShdslSpanConfProfile
* hdsl2ShdslSpanConfAlarmProfile
Unauthorized changes to hdsl2ShdslSpanConfNumRepeaters could
result in an hdsl2ShdslSpanInvalidNumRepeaters notification. Note
the discussion on hdsl2ShdslSpanInvalidNumRepeaters in the
Notifications section above.
Unauthorized changes to hdsl2ShdslSpanConfProfile could have an
adverse operational effect on a span. Reference the
hdsl2ShdslSpanConfProfileTable discussion below.
Unauthorized changes to hdsl2ShdslSpanConfAlarmProfile could have
a contrary effect on notifications. Reference the
hdsl2ShdslEndpointAlarmConfProfileTable discussion below.
o hdsl2ShdslEndpointConfTable
This table contains one object,
hdsl2ShdslEndpointAlarmConfProfile, that supports SET operations.
Unauthorized changes could have an undesirable notifications.
Reference the hdsl2ShdslEndpointAlarmConfProfileTable discussion
below.
o hdsl2ShdslEndpointMaintTable
The table consists of the following objects that support SET
operations:
* hdsl2ShdslMaintLoopbackConfig
* hdsl2ShdslMaintPowerBackoff
* hdsl2ShdslMaintSoftRestart
Unauthorized changes to hdsl2ShdslMaintLoopbackConfig could
prevent end-to-end data transfer due to an activation of a
loopback.
Unauthorized changes to hdsl2ShdslMaintPowerBackoff could result
in an increased in bundle interference.
Unauthorized changes to hdsl2ShdslMaintSoftRestart could result in
a temporary interruption of end-to-end data transfer as the result
of the triggering of a soft restart.
o hdsl2ShdslUnitMaintTable
This table contains one object, hdsl2ShdslMaintLoopbackTimeout,
that supports SET operations. An unauthorized change to this
object could result in the timeout value for loopbacks being
increased, decreased, or disabled.
o hdsl2ShdslSpanConfProfileTable
The table consists of the following objects that support SET
operations:
* hdsl2ShdslSpanConfWireInterface
* hdsl2ShdslSpanConfMinLineRate
* hdsl2ShdslSpanConfMaxLineRate
* hdsl2ShdslSpanConfPSD
* hdsl2ShdslSpanConfTransmissionMode
* hdsl2ShdslSpanConfRemoteEnabled
* hdsl2ShdslSpanConfPowerFeeding
* hdsl2ShdslSpanConfCurrCondTargetMarginDown
* hdsl2ShdslSpanConfWorstCaseTargetMarginDown
* hdsl2ShdslSpanConfCurrCondTargetMarginUp
* hdsl2ShdslSpanConfWorstCaseTargetMarginUp
* hdsl2ShdslSpanConfUsedTargetMargins
* hdsl2ShdslSpanConfReferenceClock
* hdsl2ShdslSpanConfLineProbeEnable
* hdsl2ShdslSpanConfProfileRowStatus
Setting any of the objects to an incorrect value could have an
adverse operational effect on a span.
Unauthorized changes to the hdsl2ShdslSpanConfWireInterface could
result in the failure of a span to achieve activation to a state
that would permit data flow. For example, setting this object to
six-wire or eight-wire operation when one of the units in the span
only supports two-wire or four-wire operation would likely prevent
an expected end-to-end data transfer capability.
Unauthorized changes to hdsl2ShdslSpanConfMinLineRate or
hdsl2ShdslSpanConfMaxLineRate could have an adverse effect on
performance. The range of allowable line rates could be altered
such that the span may not be able to train to a line rate that
would permit any end-user data to traverse the span or the span
could train to a line rate that is either greater than or less
than the line rate that the provider has pledged.
Unauthorized changes to hdsl2ShdslSpanConfPSD or
hdsl2ShdslSpanConfTransmissionMode could have a detrimental effect
on loop reach, performance, or spectral compatibility.
Unauthorized changes to hdsl2ShdslSpanConfRemoteEnable could alter
the remote management ability of units.
Unauthorized changes to hdsl2ShdslSpanConfPowerFeeding could
shutdown units that are expected to be fed power remotely.
Changing the configuration such that wetting current is not
supplied may result in corrosion of electrical contacts.
Unauthorized changes to
hdsl2ShdslSpanConfCurrCondTargetMarginDown,
hdsl2ShdslSpanConfWorstCaseTargetMarginDown,
hdsl2ShdslSpanConfCurrCondTargetMarginUp,
hdsl2ShdslSpanConfWorstCaseTargetMarginUp, or
hdsl2ShdslSpanConfUsedTargetMargins could result in invalid
parameters used to determine if a data rate can be supported under
current and worst-case noise.
Unauthorized changes to hdsl2ShdslSpanConfReferenceClock could
result in the selection of a clock source that might either
prevent any data from being transferred or impair data transfer.
In addition, an increase in CRC anomalies may be experienced.
Unauthorized changes to hdsl2ShdslSpanConfLineProbeEnable could
have a negative effect on selecting the optimum rate or power
level based on current line conditions.
Unauthorized changes to row status could result in unwanted
profiles being created or brought into service. Also, changes to
the row status could result in profiles being inadvertently
deleted or taken out of service.
o hdsl2ShdslEndpointAlarmConfProfileTable
The table consists of the following objects that support SET
operations:
* hdsl2ShdslEndpointThreshLoopAttenuation
* hdsl2ShdslEndpointThreshSNRMargin
* hdsl2ShdslEndpointThreshES
* hdsl2ShdslEndpointThreshSES
* hdsl2ShdslEndpointThreshCRCanomalies
* hdsl2ShdslEndpointThreshLOSWS
* hdsl2ShdslEndpointThreshUAS
* hdsl2ShdslEndpointAlarmConfProfileRowStatus
Increasing any of the threshold values could result in a
notification being suppressed or deferred. Setting a threshold to
0 could result in a notification being suppressed. Suppressing or
deferring a notification could prevent the timely delivery of
important diagnostic information. Decreasing any of the threshold
values could result in a notification being sent from the network
falsely reporting a threshold crossing.
Changing a threshold value could also have an impact on the amount
of notifications the agent sends. This document adds a paragraph,
which was not in RFC 3276 [RFC3276], to the Notifications section
that provides general guidance to the rate limiting of
notifications. Agent implementations not adhering to the rate-
limiting desires could result in notifications being generated at
an uncontrolled rate. Unauthorized changes to a threshold value
could result in an undesired notification rate.
Unauthorized changes to row status could result in unwanted
profiles being created or brought into service. Also, changes to
the row status could result in profiles being inadvertently
deleted or taken out of service.
Some of the readable objects in this MIB module (i.e., objects with a
MAX-ACCESS other than not-accessible) may be considered sensitive or
vulnerable in some network environments. It is thus important to
control even GET and/or NOTIFY access to these objects and possibly
to even encrypt the values of these objects when sending them over
the network via SNMP. These are the tables and objects and their
sensitivity/vulnerability:
o hdsl2ShdslInventoryTable
Access to these objects would allow an intruder to obtain
information about which vendor's equipment is in use on the
network. Further, such information is considered sensitive in
many environments for competitive reasons.
* hdsl2ShdslInvVendorID
* hdsl2ShdslInvVendorModelNumber
* hdsl2ShdslInvVendorSerialNumber
* hdsl2ShdslInvVendorEOCSoftwareVersion
* hdsl2ShdslInvStandardVersion
* hdsl2ShdslInvVendorListNumber
* hdsl2ShdslInvVendorIssueNumber
* hdsl2ShdslInvVendorSoftwareVersion
* hdsl2ShdslInvEquipmentCode
* hdsl2ShdslInvVendorOther
* hdsl2ShdslInvTransmissionModeCapability
SNMP versions prior to SNMPv3 did not include adequate security.
Even if the network itself is secure (for example by using IPsec),
even then, there is no control as to who on the secure network is
allowed to access and GET/SET (read/change/create/delete) the objects
in this MIB module.
It is RECOMMENDED that implementers consider the security features as
provided by the SNMPv3 framework (see [RFC3410], Section 8),
including full support for the SNMPv3 cryptographic mechanisms (for
authentication and privacy).
Further, deployment of SNMP versions prior to SNMPv3 is NOT
RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
enable cryptographic security. It is then a customer/operator
responsibility to ensure that the SNMP entity giving access to an
instance of this MIB module is properly configured to give access to
the objects only to those principals (users) that have legitimate
rights to indeed GET or SET (change/create/delete) them.
6. Acknowledgements
The authors are deeply grateful to the authors of the ADSL LINE MIB
(RFC 2662 [RFC2662]), Gregory Bathrick and Faye Ly, as much of the
text and structure of this document originate in their documents.
The authors are also grateful to the authors of FR MFR MIB (RFC 3020
[RFC3020]), Prayson Pate, Bob Lynch, and Kenneth Rehbehn, as the
majority of the Security Considerations section was lifted from their
document.
The authors also acknowledge the importance of the contributions and
suggestions regarding interface indexing structures received from
David Horton of CITR.
The authors are extremely thankful to Bert Wijnen, Randy Presuhn, and
C. M. Heard for their extensive review and the many suggestions they
provided.
Other contributions were received from the following:
Matt Beanland (Extel Communications)
Philip Bergstresser (Adtran)
Steve Blackwell (Centillium)
Umberto Bonollo (NEC Australia)
John Egan (Metalink BroadBand)
Yagal Hachmon (RAD)
Mark Johnson (Red Point)
Sharon Mantin (Orckit)
Moti Morgenstern (ECI)
Raymond Murphy (Ericsson)
Lee Nipper (Verilink)
Randy Presuhn (BMC Software)
Katy Sherman (Orckit)
Mike Sneed (ECI)
Jon Turney (DSL Solutions)
Aron Wahl (Memotec)
Bert Wijnen (Lucent)
Jim Wilson (for Mindspeed)
Michael Wrobel (Memotec)
7. References
7.1. Normative References
[G.991.2] Blackwell, S., "Single-Pair High-Speed Digital Subscriber
Line (SHDSL) Transceivers", ITU-T G.991.2, December 2003.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Structure of Management Information Version 2 (SMIv2)",
STD 58, RFC 2578, April 1999.
[RFC2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Textual Conventions for SMIv2", STD 58, RFC 2579, April
1999.
[RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Conformance Statements for SMIv2", STD 58, RFC 2580,
April 1999.
[RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
MIB", RFC 2863, June 2000.
[RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks", STD 62, RFC 3411, December 2002. [RFC3593] Tesink, K., "Textual Conventions for MIB Modules Using Performance History Based on 15 Minute Intervals", RFC 3593, September 2003. [T1E1.4] American National Standards Institute, "ANSI T1E1.4/2000- 006", February 2000.7.2. Informative References
[RFC2662] Bathrick, G. and F. Ly, "Definitions of Managed Objects for the ADSL Lines", RFC 2662, August 1999. [RFC3020] Pate, P., Lynch, B., and K. Rehbehn, "Definitions of Managed Objects for Monitoring and Controlling the UNI/NNI Multilink Frame Relay Function", RFC 3020, December 2000. [RFC3276] Ray, B. and R. Abbi, "Definitions of Managed Objects for High Bit-Rate DSL - 2nd generation (HDSL2) and Single-Pair High-Speed Digital Subscriber Line (SHDSL) Lines Processing", RFC 3276, May 2002. [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002. [RFC3418] Presuhn, R., "Management Information Base (MIB) for the Simple Network Management Protocol (SNMP)", STD 62, RFC 3418, December 2002.
Authors' Addresses
Clay Sikes Zhone Technologies, Inc. Florida Design Center 8454 126th Ave. N. Largo, FL 33773 US Phone: +1 727 530 8257 Fax: +1 727 532 5698 EMail: csikes@zhone.com Bob Ray PESA Switching Systems, Inc. 330-A Wynn Drive Huntsville, AL 35805 US Phone: +1 256 726 9200 ext. 142 Fax: +1 256 726 9271 EMail: rray@pesa.com Rajesh Abbi Alcatel USA 2301 Sugar Bush Road Raleigh, NC 27612 US Phone: +1 919-850-6194 Fax: +1 919-850-6670 EMail: Rajesh.Abbi@alcatel.com
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