RFC 3895
Definitions of Managed Objects for the DS1, E1, DS2, and E2 Interface Types
dsx1FarEndTotalCSSs OBJECT-TYPE
SYNTAX PerfTotalCount
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Far End Controlled Slip Seconds
encountered by a DS1 interface in the previous 24
hour interval. Invalid 15 minute intervals count
as 0."
::= { dsx1FarEndTotalEntry 6 }
dsx1FarEndTotalLESs OBJECT-TYPE
SYNTAX PerfTotalCount
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Far End Line Errored Seconds
encountered by a DS1 interface in the previous 24
hour interval. Invalid 15 minute intervals count
as 0."
::= { dsx1FarEndTotalEntry 7 }
dsx1FarEndTotalPCVs OBJECT-TYPE
SYNTAX PerfTotalCount
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Far End Path Coding Violations
reported via the far end block error count
encountered by a DS1 interface in the previous 24
hour interval. Invalid 15 minute intervals count
as 0."
::= { dsx1FarEndTotalEntry 8 }
dsx1FarEndTotalBESs OBJECT-TYPE
SYNTAX PerfTotalCount
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Bursty Errored Seconds (BESs)
encountered by a DS1 interface in the previous 24
hour interval. Invalid 15 minute intervals count
as 0."
::= { dsx1FarEndTotalEntry 9 }
dsx1FarEndTotalDMs OBJECT-TYPE
SYNTAX PerfTotalCount
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Degraded Minutes (DMs) encountered
by a DS1 interface in the previous 24 hour
interval. Invalid 15 minute intervals count as
0."
::= { dsx1FarEndTotalEntry 10 }
-- The DS1 Fractional Table
dsx1FracTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dsx1FracEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"This table is deprecated in favour of using
ifStackTable.
The table was mandatory for systems dividing a DS1
into channels containing different data streams
that are of local interest. Systems which are
indifferent to data content, such as CSUs, need
not implement it.
The DS1 fractional table identifies which DS1
channels associated with a CSU are being used to
support a logical interface, i.e., an entry in the
interfaces table from the Internet-standard MIB.
For example, consider an application managing a
North American ISDN Primary Rate link whose
division is a 384 kbit/s H1 _B_ Channel for Video,
a second H1 for data to a primary routing peer,
and 12 64 kbit/s H0 _B_ Channels. Consider that
some subset of the H0 channels are used for voice
and the remainder are available for dynamic data
calls.
We count a total of 14 interfaces multiplexed onto
the DS1 interface. Six DS1 channels (for the sake
of the example, channels 1..6) are used for Video,
six more (7..11 and 13) are used for data, and the
remaining 12 are in channels 12 and 14..24.
Let us further imagine that ifIndex 2 is of type
DS1 and refers to the DS1 interface, and that the
interfaces layered onto it are numbered 3..16.
We might describe the allocation of channels, in
the dsx1FracTable, as follows:
dsx1FracIfIndex.2. 1 = 3 dsx1FracIfIndex.2.13 = 4
dsx1FracIfIndex.2. 2 = 3 dsx1FracIfIndex.2.14 = 6
dsx1FracIfIndex.2. 3 = 3 dsx1FracIfIndex.2.15 = 7
dsx1FracIfIndex.2. 4 = 3 dsx1FracIfIndex.2.16 = 8
dsx1FracIfIndex.2. 5 = 3 dsx1FracIfIndex.2.17 = 9
dsx1FracIfIndex.2. 6 = 3 dsx1FracIfIndex.2.18 = 10
dsx1FracIfIndex.2. 7 = 4 dsx1FracIfIndex.2.19 = 11
dsx1FracIfIndex.2. 8 = 4 dsx1FracIfIndex.2.20 = 12
dsx1FracIfIndex.2. 9 = 4 dsx1FracIfIndex.2.21 = 13
dsx1FracIfIndex.2.10 = 4 dsx1FracIfIndex.2.22 = 14
dsx1FracIfIndex.2.11 = 4 dsx1FracIfIndex.2.23 = 15
dsx1FracIfIndex.2.12 = 5 dsx1FracIfIndex.2.24 = 16
For North American (DS1) interfaces, there are 24
legal channels, numbered 1 through 24.
For G.704 interfaces, there are 31 legal channels,
numbered 1 through 31. The channels (1..31)
correspond directly to the equivalently numbered
time-slots."
::= { ds1 13 }
dsx1FracEntry OBJECT-TYPE
SYNTAX Dsx1FracEntry
MAX-ACCESS not-accessible
STATUS deprecated
DESCRIPTION
"An entry in the DS1 Fractional table."
INDEX { dsx1FracIndex, dsx1FracNumber }
::= { dsx1FracTable 1 }
Dsx1FracEntry ::=
SEQUENCE {
dsx1FracIndex INTEGER,
dsx1FracNumber INTEGER,
dsx1FracIfIndex INTEGER
}
dsx1FracIndex OBJECT-TYPE
SYNTAX INTEGER (1..'7fffffff'h)
MAX-ACCESS read-only -- read-only since originally an
-- SMIv1 index
STATUS deprecated
DESCRIPTION
"The index value which uniquely identifies the
DS1 interface to which this entry is applicable
The interface identified by a particular
value of this index is the same interface as
identified by the same value an dsx1LineIndex
object instance."
::= { dsx1FracEntry 1 }
dsx1FracNumber OBJECT-TYPE
SYNTAX INTEGER (1..31)
MAX-ACCESS read-only -- read-only since originally an
-- SMIv1 index
STATUS deprecated
DESCRIPTION
"The channel number for this entry."
::= { dsx1FracEntry 2 }
dsx1FracIfIndex OBJECT-TYPE
SYNTAX INTEGER (0..'7fffffff'h)
MAX-ACCESS read-write
STATUS deprecated
DESCRIPTION
"An index value that uniquely identifies an
interface. The interface identified by a particular
value of this index is the same interface
as identified by the same value an ifIndex
object instance. If no interface is currently using
a channel, the value should be zero. If a
single interface occupies more than one time
slot, that ifIndex value will be found in multiple
time slots."
::= { dsx1FracEntry 3 }
-- DS1 TRAPS
ds1Traps OBJECT IDENTIFIER ::= { ds1 15 }
dsx1LineStatusChange NOTIFICATION-TYPE
OBJECTS { dsx1LineStatus,
dsx1LineStatusLastChange }
STATUS current
DESCRIPTION
"A dsx1LineStatusChange trap is sent when the
value of an instance dsx1LineStatus changes. It
can be utilized by an NMS to trigger polls. When
the line status change results from a higher level
line status change (i.e., ds3), then no traps for
the ds1 are sent."
::= { ds1Traps 0 1 }
-- conformance information
ds1Conformance OBJECT IDENTIFIER ::= { ds1 14 }
ds1Groups OBJECT IDENTIFIER ::= { ds1Conformance 1 }
ds1Compliances OBJECT IDENTIFIER ::= { ds1Conformance 2 }
-- compliance statements
ds1Compliance MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"The compliance statement for T1 and E1
interfaces."
MODULE -- this module
MANDATORY-GROUPS { ds1NearEndConfigGroup,
ds1NearEndStatisticsGroup }
GROUP ds1FarEndGroup
DESCRIPTION
"Implementation of this group is optional for all
systems that attach to a DS1 Interface."
GROUP ds1NearEndOptionalConfigGroup
DESCRIPTION
"Implementation of this group is optional for all
systems that attach to a DS1 Interface."
GROUP ds1DS2Group
DESCRIPTION
"Implementation of this group is mandatory for all
systems that attach to a DS2 Interface."
GROUP ds1TransStatsGroup
DESCRIPTION
"This group is the set of statistics appropriate
for all systems which attach to a DS1 Interface
running transparent or unFramed lineType."
GROUP ds1ChanMappingGroup
DESCRIPTION
"This group is the set of objects for mapping a
DS3 Channel (dsx1Ds1ChannelNumber) to ifIndex.
Implementation of this group is mandatory for
systems which support the channelization of DS3s
into DS1s."
OBJECT dsx1LineType
SYNTAX INTEGER {
other(1),
dsx1ESF(2),
dsx1D4(3),
dsx1E1(4),
dsx1E1CRC(5),
dsx1E1MF(6),
dsx1E1CRCMF(7),
dsx1Unframed(8),
dsx1E1Unframed(9),
dsx1DS2M12(10),
dsx1E2(11)
}
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the line type is not
required."
OBJECT dsx1LineCoding
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the line coding is not
required."
OBJECT dsx1SendCode
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the send code is not
required."
OBJECT dsx1LoopbackConfig
MIN-ACCESS read-only
DESCRIPTION
"The ability to set loopbacks is not required."
OBJECT dsx1SignalMode
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the signal mode is not
required."
OBJECT dsx1TransmitClockSource
SYNTAX INTEGER {
loopTiming(1),
localTiming(2),
throughTiming(3)
}
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the transmit clock source is
not required."
OBJECT dsx1Fdl
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the FDL is not required."
OBJECT dsx1LineLength
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the line length is not
required."
OBJECT dsx1Channelization
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the channelization is not
required."
::= { ds1Compliances 1 }
ds1MibT1PriCompliance MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"Compliance statement for using this MIB for ISDN
Primary Rate interfaces on T1 lines."
MODULE
MANDATORY-GROUPS { ds1NearEndConfigGroup,
ds1NearEndStatisticsGroup }
OBJECT dsx1LineType
SYNTAX INTEGER {
dsx1ESF(2) -- Intl Spec would be G704(2)
-- or I.431(4)
}
MIN-ACCESS read-only
DESCRIPTION
"Line type for T1 ISDN Primary Rate
interfaces."
OBJECT dsx1LineCoding
SYNTAX INTEGER {
dsx1B8ZS(2)
}
MIN-ACCESS read-only
DESCRIPTION
"Type of Zero Code Suppression for
T1 ISDN Primary Rate interfaces."
OBJECT dsx1SignalMode
SYNTAX INTEGER {
none(1), -- if there is no signaling channel
messageOriented(4)
}
MIN-ACCESS read-only
DESCRIPTION
"Possible signaling modes for
T1 ISDN Primary Rate interfaces."
OBJECT dsx1TransmitClockSource
SYNTAX INTEGER {
loopTiming(1)
}
MIN-ACCESS read-only
DESCRIPTION
"The transmit clock is derived from
received clock on ISDN Primary Rate
interfaces."
OBJECT dsx1Fdl
MIN-ACCESS read-only
DESCRIPTION
"Facilities Data Link usage on T1 ISDN
Primary Rate interfaces.
Note: Eventually dsx1Att-54016(4) is to be
used here since the line type is ESF."
OBJECT dsx1Channelization
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the channelization
is not required."
::= { ds1Compliances 2 }
ds1MibE1PriCompliance MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"Compliance statement for using this MIB for ISDN
Primary Rate interfaces on E1 lines."
MODULE
MANDATORY-GROUPS { ds1NearEndConfigGroup,
ds1NearEndStatisticsGroup }
OBJECT dsx1LineType
SYNTAX INTEGER {
dsx1E1CRC(5)
}
MIN-ACCESS read-only
DESCRIPTION
"Line type for E1 ISDN Primary Rate
interfaces."
OBJECT dsx1LineCoding
SYNTAX INTEGER {
dsx1HDB3(3)
}
MIN-ACCESS read-only
DESCRIPTION
"Type of Zero Code Suppression for
E1 ISDN Primary Rate interfaces."
OBJECT dsx1SignalMode
SYNTAX INTEGER {
messageOriented(4)
}
MIN-ACCESS read-only
DESCRIPTION
"Signaling on E1 ISDN Primary Rate interfaces
is always message oriented."
OBJECT dsx1TransmitClockSource
SYNTAX INTEGER {
loopTiming(1)
}
MIN-ACCESS read-only
DESCRIPTION
"The transmit clock is derived from received
clock on ISDN Primary Rate interfaces."
OBJECT dsx1Fdl
MIN-ACCESS read-only
DESCRIPTION
"Facilities Data Link usage on E1 ISDN
Primary Rate interfaces.
Note: There is a 'M-Channel' in E1,
using National Bit Sa4 (G704,
Table 4a). It is used to implement
management features between ET
and NT. This is different to
FDL in T1, which is used to carry
control signals and performance
data. In E1, control and status
signals are carried using National
Bits Sa5, Sa6 and A (RAI Ind.).
This indicates that only the other(1) or
eventually the dsx1Fdl-none(8) bits should
be set in this object for E1 PRI."
OBJECT dsx1Channelization
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the channelization is not
required."
::= { ds1Compliances 3 }
ds1Ds2Compliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for using this MIB for DS2
interfaces."
MODULE
MANDATORY-GROUPS { ds1DS2Group }
OBJECT dsx1LineType
SYNTAX INTEGER {
dsx1DS2M12(10),
dsx1E2(11)
}
MIN-ACCESS read-only
DESCRIPTION
"Line type for DS2, E2
interfaces."
OBJECT dsx1Channelization
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the channelization is not
required."
::= { ds1Compliances 4 }
ds1NCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for T1 and E1
interfaces."
MODULE -- this module
MANDATORY-GROUPS { ds1NearEndConfigurationGroup,
ds1NearEndStatisticsGroup }
GROUP ds1FarEndGroup
DESCRIPTION
"Implementation of this group is optional for all
systems that attach to a DS1 Interface."
GROUP ds1NearEndOptionalTrapGroup
DESCRIPTION
"Implementation of this group is optional for all
systems that attach to a DS1 Interface. If it is
implemented then ds1NearEndOptionalConfigGroup
should also be implemented."
GROUP ds1NearEndOptionalConfigGroup
DESCRIPTION
"Implementation of this group is recommended for
all systems that attach to a DS1 Interface and
implement ds1NearEndOptionalTrapGroup."
GROUP ds1DS2Group
DESCRIPTION
"Implementation of this group is mandatory for all
systems that attach to a DS2 Interface."
GROUP ds1TransStatsGroup
DESCRIPTION
"This group is the set of statistics appropriate
for all systems which attach to a DS1 Interface
running transparent or unFramed lineType."
GROUP ds1ChanMappingGroup
DESCRIPTION
"This group is the set of objects for mapping a
DS3 Channel (dsx1Ds1ChannelNumber) to ifIndex.
Implementation of this group is mandatory for
systems which support the channelization of DS3s
into DS1s."
OBJECT dsx1LineType
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the line type is not
required."
OBJECT dsx1LineCoding
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the line coding is not
required."
OBJECT dsx1SendCode
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the send code is not
required."
OBJECT dsx1LoopbackConfig
MIN-ACCESS read-only
DESCRIPTION
"The ability to set loopbacks is not required."
OBJECT dsx1SignalMode
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the signal mode is not
required."
OBJECT dsx1TransmitClockSource
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the transmit clock source is
not required."
OBJECT dsx1Fdl
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the FDL is not required."
OBJECT dsx1LineLength
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the line length is not
required."
OBJECT dsx1Channelization
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the channelization is not
required."
OBJECT dsx1LineMode
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the Line Mode is not
required."
OBJECT dsx1LineBuildOut
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the Line build out is not
required."
::= { ds1Compliances 5 }
ds1MibT1PriNCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for using this MIB for ISDN
Primary Rate interfaces on T1 lines."
MODULE
MANDATORY-GROUPS { ds1NearEndConfigurationGroup,
ds1NearEndStatisticsGroup }
OBJECT dsx1LineType
SYNTAX INTEGER {
dsx1ESF(2) -- Intl Spec would be G704(2)
-- or I.431(4)
}
MIN-ACCESS read-only
DESCRIPTION
"Line type for T1 ISDN Primary Rate
interfaces."
OBJECT dsx1LineCoding
SYNTAX INTEGER {
dsx1B8ZS(2)
}
MIN-ACCESS read-only
DESCRIPTION
"Type of Zero Code Suppression for
T1 ISDN Primary Rate interfaces."
OBJECT dsx1SignalMode
SYNTAX INTEGER {
none(1), -- if there is no signaling channel
messageOriented(4)
}
MIN-ACCESS read-only
DESCRIPTION
"Possible signaling modes for
T1 ISDN Primary Rate interfaces."
OBJECT dsx1TransmitClockSource
SYNTAX INTEGER {
loopTiming(1)
}
MIN-ACCESS read-only
DESCRIPTION
"The transmit clock is derived from
received clock on ISDN Primary Rate
interfaces."
OBJECT dsx1Fdl
MIN-ACCESS read-only
DESCRIPTION
"Facilities Data Link usage on T1 ISDN
Primary Rate interfaces.
Note: Eventually dsx1Att-54016(4) is to be
used here since the line type is ESF."
OBJECT dsx1Channelization
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the channelization
is not required."
OBJECT dsx1LineMode
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the Line Mode is not
required."
OBJECT dsx1LineBuildOut
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the Line build out is not
required."
::= { ds1Compliances 6 }
ds1MibE1PriNCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for using this MIB for ISDN
Primary Rate interfaces on E1 lines."
MODULE
MANDATORY-GROUPS { ds1NearEndConfigurationGroup,
ds1NearEndStatisticsGroup }
OBJECT dsx1LineType
SYNTAX INTEGER {
dsx1E1CRC(5)
}
MIN-ACCESS read-only
DESCRIPTION
"Line type for E1 ISDN Primary Rate
interfaces."
OBJECT dsx1LineCoding
SYNTAX INTEGER {
dsx1HDB3(3)
}
MIN-ACCESS read-only
DESCRIPTION
"Type of Zero Code Suppression for
E1 ISDN Primary Rate interfaces."
OBJECT dsx1SignalMode
SYNTAX INTEGER {
messageOriented(4)
}
MIN-ACCESS read-only
DESCRIPTION
"Signaling on E1 ISDN Primary Rate interfaces
is always message oriented."
OBJECT dsx1TransmitClockSource
SYNTAX INTEGER {
loopTiming(1)
}
MIN-ACCESS read-only
DESCRIPTION
"The transmit clock is derived from received
clock on ISDN Primary Rate interfaces."
OBJECT dsx1Fdl
MIN-ACCESS read-only
DESCRIPTION
"Facilities Data Link usage on E1 ISDN
Primary Rate interfaces.
Note: There is a 'M-Channel' in E1,
using National Bit Sa4 (G704,
Table 4a). It is used to implement
management features between ET
and NT. This is different to
FDL in T1, which is used to carry
control signals and performance
data. In E1, control and status
signals are carried using National
Bits Sa5, Sa6 and A (RAI Ind.).
This indicates that only the other(1) or
eventually the dsx1Fdl-none(8) bits should
be set in this object for E1 PRI."
OBJECT dsx1Channelization
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the channelization is not
required."
OBJECT dsx1LineMode
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the Line Mode is not required."
OBJECT dsx1LineBuildOut
MIN-ACCESS read-only
DESCRIPTION
"The ability to set the Line build out is not
required."
::= { ds1Compliances 7 }
-- units of conformance
ds1NearEndConfigGroup OBJECT-GROUP
OBJECTS { dsx1LineIndex,
dsx1TimeElapsed,
dsx1ValidIntervals,
dsx1LineType,
dsx1LineCoding,
dsx1SendCode,
dsx1CircuitIdentifier,
dsx1LoopbackConfig,
dsx1LineStatus,
dsx1SignalMode,
dsx1TransmitClockSource,
dsx1Fdl,
dsx1InvalidIntervals,
dsx1LineLength,
dsx1LoopbackStatus,
dsx1Ds1ChannelNumber,
dsx1Channelization }
STATUS deprecated
DESCRIPTION
"A collection of objects providing configuration
information applicable to all DS1 interfaces."
::= { ds1Groups 1 }
ds1NearEndStatisticsGroup OBJECT-GROUP
OBJECTS { dsx1CurrentIndex,
dsx1CurrentESs,
dsx1CurrentSESs,
dsx1CurrentSEFSs,
dsx1CurrentUASs,
dsx1CurrentCSSs,
dsx1CurrentPCVs,
dsx1CurrentLESs,
dsx1CurrentBESs,
dsx1CurrentDMs,
dsx1CurrentLCVs,
dsx1IntervalIndex,
dsx1IntervalNumber,
dsx1IntervalESs,
dsx1IntervalSESs,
dsx1IntervalSEFSs,
dsx1IntervalUASs,
dsx1IntervalCSSs,
dsx1IntervalPCVs,
dsx1IntervalLESs,
dsx1IntervalBESs,
dsx1IntervalDMs,
dsx1IntervalLCVs,
dsx1IntervalValidData,
dsx1TotalIndex,
dsx1TotalESs,
dsx1TotalSESs,
dsx1TotalSEFSs,
dsx1TotalUASs,
dsx1TotalCSSs,
dsx1TotalPCVs,
dsx1TotalLESs,
dsx1TotalBESs,
dsx1TotalDMs,
dsx1TotalLCVs }
STATUS current
DESCRIPTION
"A collection of objects providing statistics
information applicable to all DS1 interfaces."
::= { ds1Groups 2 }
ds1FarEndGroup OBJECT-GROUP
OBJECTS { dsx1FarEndCurrentIndex,
dsx1FarEndTimeElapsed,
dsx1FarEndValidIntervals,
dsx1FarEndCurrentESs,
dsx1FarEndCurrentSESs,
dsx1FarEndCurrentSEFSs,
dsx1FarEndCurrentUASs,
dsx1FarEndCurrentCSSs,
dsx1FarEndCurrentLESs,
dsx1FarEndCurrentPCVs,
dsx1FarEndCurrentBESs,
dsx1FarEndCurrentDMs,
dsx1FarEndInvalidIntervals,
dsx1FarEndIntervalIndex,
dsx1FarEndIntervalNumber,
dsx1FarEndIntervalESs,
dsx1FarEndIntervalSESs,
dsx1FarEndIntervalSEFSs,
dsx1FarEndIntervalUASs,
dsx1FarEndIntervalCSSs,
dsx1FarEndIntervalLESs,
dsx1FarEndIntervalPCVs,
dsx1FarEndIntervalBESs,
dsx1FarEndIntervalDMs,
dsx1FarEndIntervalValidData,
dsx1FarEndTotalIndex,
dsx1FarEndTotalESs,
dsx1FarEndTotalSESs,
dsx1FarEndTotalSEFSs,
dsx1FarEndTotalUASs,
dsx1FarEndTotalCSSs,
dsx1FarEndTotalLESs,
dsx1FarEndTotalPCVs,
dsx1FarEndTotalBESs,
dsx1FarEndTotalDMs }
STATUS current
DESCRIPTION
"A collection of objects providing remote
configuration and statistics information."
::= { ds1Groups 3 }
ds1DeprecatedGroup OBJECT-GROUP
OBJECTS { dsx1IfIndex,
dsx1FracIndex,
dsx1FracNumber,
dsx1FracIfIndex }
STATUS deprecated
DESCRIPTION
"A collection of obsolete objects that may be
implemented for backwards compatibility."
::= { ds1Groups 4 }
ds1NearEndOptionalConfigGroup OBJECT-GROUP
OBJECTS { dsx1LineStatusLastChange,
dsx1LineStatusChangeTrapEnable }
STATUS current
DESCRIPTION
"A collection of objects that may be implemented
on DS1 and DS2 interfaces."
::= { ds1Groups 5 }
ds1DS2Group OBJECT-GROUP
OBJECTS { dsx1LineIndex,
dsx1LineType,
dsx1LineCoding,
dsx1SendCode,
dsx1LineStatus,
dsx1SignalMode,
dsx1TransmitClockSource,
dsx1Channelization }
STATUS current
DESCRIPTION
"A collection of objects providing information
about DS2 (6,312 kbps) and E2 (8,448 kbps)
systems."
::= { ds1Groups 6 }
ds1TransStatsGroup OBJECT-GROUP
OBJECTS { dsx1CurrentESs,
dsx1CurrentSESs,
dsx1CurrentUASs,
dsx1IntervalESs,
dsx1IntervalSESs,
dsx1IntervalUASs,
dsx1TotalESs,
dsx1TotalSESs,
dsx1TotalUASs }
STATUS current
DESCRIPTION
"A collection of objects which are the
statistics which can be collected from a ds1
interface that is running transparent or unframed
lineType. Statistics not in this list should
return noSuchInstance."
::= { ds1Groups 7 }
ds1NearEndOptionalTrapGroup NOTIFICATION-GROUP
NOTIFICATIONS { dsx1LineStatusChange }
STATUS current
DESCRIPTION
"A collection of notifications that may be
implemented on DS1 and DS2 interfaces."
::= { ds1Groups 8 }
ds1ChanMappingGroup OBJECT-GROUP
OBJECTS { dsx1ChanMappedIfIndex }
STATUS current
DESCRIPTION
"A collection of objects that give an mapping of
DS3 Channel (dsx1Ds1ChannelNumber) to ifIndex."
::= { ds1Groups 9 }
ds1NearEndConfigurationGroup OBJECT-GROUP
OBJECTS { dsx1LineIndex,
dsx1TimeElapsed,
dsx1ValidIntervals,
dsx1LineType,
dsx1LineCoding,
dsx1SendCode,
dsx1CircuitIdentifier,
dsx1LoopbackConfig,
dsx1LineStatus,
dsx1SignalMode,
dsx1TransmitClockSource,
dsx1Fdl,
dsx1InvalidIntervals,
dsx1LineLength,
dsx1LoopbackStatus,
dsx1Ds1ChannelNumber,
dsx1Channelization,
dsx1LineMode,
dsx1LineBuildOut }
STATUS current
DESCRIPTION
"A collection of objects providing configuration
information applicable to all DS1 interfaces."
::= { ds1Groups 10 }
END
4. Acknowledgments
This document was produced by the AToM MIB Working Group. The Editor
would like to dedicate a special thanks to C. Mike Heard for
providing a top notch doctor review and many helpful suggestions, and
to acknowledge D. Fowler, Editor of RFC 2495, F. Baker and J. Watt
Editors of RFC 1406.
5. Security Considerations
There are a number of management objects defined in this MIB module
with a MAX-ACCESS clause of read-write. 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. The
specific objects and their sensitivities/vulnerabilities are as
follows.
Setting the following objects to incorrect values may result in
traffic interruptions:
dsx1LineType
dsx1LineCoding
dsx1SendCode
dsx1LoopbackConfig
dsx1SignalMode
dsx1TransmitClockSource
dsx1Fdl
dsx1LineLength
dsx1Channelization
dsx1LineMode
dsx1LineBuildOut
In the case of dsx1LineType, for example, both ends of a DS1/E1 must
have the same value in order for traffic to flow. In the case of
dsx1SendCode and dsx1LoopbackConfig, for another example, traffic may
stop transmitting when particular loopbacks are applied.
Setting the following object to an incorrect value will not harm the
traffic, but it may cause a circuit to be mis-identified and thereby
create difficulties for service personnel when attempting to
troubleshoot a problem:
dsx1CircuitIdentifier
Setting the following object can cause an increase in the number of
traps received by the network management station:
dsx1LineStatusChangeTrapEnable
The readable objects in this MIB module (i.e., the objects with a
MAX-ACCESS other than not-accessible) may be considered sensitive in
some environments since, collectively, they provide extensive
information about the performance of interfaces in DS1/E1/DS2/E2
equipment or networks and can reveal some aspects of their
configuration. In such environments, it is important to control even
GET and NOTIFY access to these objects and possibly to encrypt the
values of these objects when sending them over the network via SNMP.
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. References
6.1. Normative References
[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. [AT&T-TR-54016] AT&T Technical Reference, Requirements for Interfacing Digital Terminal Equipment to Services Employing the Extended Superframe Format, Publication 54016, May 1988. [ANSI-T1.403] American National Standard for Telecommunications -- Carrier-to-Customer Installation - DS1 Metallic Interface, T1.403, February 1989. [CCITT-G.703] CCITT Specifications Volume III, Recommendation G.703, Physical/Electrical Characteristics of Hierarchical Digital Interfaces, April 1991. [ITU-T-G.704] ITU-T G.704: Synchronous frame structures used at 1544, 6312, 2048, 8488 and 44 736 kbit/s Hierarchical Levels, July 1995.
[ANSI-T1.231] American National Standard for Telecommunications -- Digital Hierarchy -- Layer 1 In-Service Digital Transmission Performance Monitoring, T1.231, Sept 1993. [CCITT-O.162] CCITT Specifications Volume IV, Recommendation O.162, Equipment To Perform In Service Monitoring On 2048 kbit/s Signals, July 1988. [CCITT-G.821] CCITT Specifications Volume III, Recommendation G.821, Error Performance Of An International Digital Connection Forming Part Of An Integrated Services Digital Network, July 1988. [AT&T-TR-62411] AT&T Technical Reference, Technical Reference 62411, ACCUNET T1.5 Service Description And Interface Specification, December 1990. [CCITT-G.706] CCITT Specifications Volume III, Recommendation G.706, Frame Alignment and Cyclic Redundancy Check (CRC) Procedures Relating to Basic Frame Structures Defined in Recommendation G.704, July 1988. [CCITT-G.732] CCITT Specifications Volume III, Recommendation G.732, Characteristics Of Primary PCM Multiplex Equipment Operating at 2048 kbit/s, July 1988. [ITU-T-G.775] ITU-T G.775: Loss of signal (LOS) and alarm indication signal (AIS) defect detection and clearance criteria, May 1995. [ITU-T-G.826] ITU-T G.826: Error performance parameters and objectives for international, constant bit rate digital paths at or above the primary rate, November 1993. [ANSI-T1.107] American National Standard for Telecommunications -- Digital Hierarchy - Format Specifications, T1.107, August 1988. [RFC3593] Tesink, K., Ed., "Textual Conventions for MIB Modules Using Performance History Based on 15 Minute Intervals", RFC 3593, September 2003. [ITU-T-M.1400] ITU-T M.1400: Designation For Interconnections Among Network Operators, October 2001.
6.2. Informative References
[RFC1213] McCloghrie, K. and M. Rose, "Management Information Base for Network Management of TCP/IP-based internets: MIB-II", STD 17, RFC 1213, March 1991. [RFC2494] Fowler, D., "Definitions of Managed Objects for the DS0 and DS0 Bundle Interface Type", RFC 2494, January 1999. [RFC2495] Fowler, D., Ed., "Definitions of Managed Objects for the DS1, E1, DS2 and E1 Interface Types", RFC 2495, January 1999. [RFC1406] Baker, F. and J. Watt, Eds., "Definitions of Managed Objects for the DS1 and E1 Interface Types", RFC 1406, January 1993. [AT&T-UM-305] AT&T Information Systems, AT&T ESF DS1 Channel Service Unit User's Manual, 999-100-305, February 1988. [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet-Standard Management Framework", RFC 3410, December 2002. [RFC3592] Tesink, K., "Definitions of Managed Objects for the Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) Interface Type", RFC 3592, September 2003. [RFC3896] Nicklass, O., Ed., "Definitions of Managed Objects for the DS3/E3 Interface Types", RFC 3896, September 2004.
Appendix A - Use of dsx1IfIndex and dsx1LineIndex
This Appendix exists to document the previous use if dsx1IfIndex and dsx1LineIndex and to clarify the relationship of dsx1LineIndex as defined in RFC 1406 with the dsx1LineIndex as defined in this document. The following shows the old and new definitions and the relationship: [New Definition]: "This object should be made equal to ifIndex. The next paragraph describes its previous usage. Making the object equal to ifIndex allows proper use of ifStackTable and ds0/ds0bundle mibs. [Old Definition]: "This object is the identifier of a DS1 Interface on a managed device. If there is an ifEntry that is directly associated with this and only this DS1 interface, it should have the same value as ifIndex. Otherwise, number the dsx1LineIndices with an unique identifier following the rules of choosing a number that is greater than ifNumber and numbering the inside interfaces (e.g., equipment side) with even numbers and outside interfaces (e.g., network side) with odd numbers." When the "Old Definition" was created, it was described this way to allow a manager to treat the value _as if_ it were and ifIndex, i.e., the value would either be: 1) an ifIndex value or 2) a value that was guaranteed to be different from all valid ifIndex values. The new definition is a subset of that definition, i.e., the value is always an ifIndex value. The following is Section 3.1 from RFC 1406: Different physical configurations for the support of SNMP with DS1 equipment exist. To accommodate these scenarios, two different indices for DS1 interfaces are introduced in this MIB. These indices are dsx1IfIndex and dsx1LineIndex. External interface scenario: the SNMP Agent represents all managed DS1 lines as external interfaces (for example, an Agent residing on the device supporting DS1 interfaces directly): For this scenario, all interfaces are assigned an integer value equal to ifIndex, and the following applies: ifIndex=dsx1IfIndex=dsx1LineIndex for all interfaces.
The dsx1IfIndex column of the DS1 Configuration table relates each DS1 interface to its corresponding interface (ifIndex) in the Internet-standard MIB (MIB-II STD 17, RFC 1213) [RFC1213]. External&Internal interface scenario: the SNMP Agents resides on an host external from the device supporting DS1 interfaces (e.g., a router). The Agent represents both the host and the DS1 device. The index dsx1LineIndex is used to not only represent the DS1 interfaces external from the host/DS1-device combination, but also the DS1 interfaces connecting the host and the DS1 device. The index dsx1IfIndex is always equal to ifIndex. Example: A shelf full of CSUs connected to a Router. An SNMP Agent residing on the router proxies for itself and the CSU. The router has also an Ethernet interface: +-----+ | | | | | | +---------------------+ |E | | 1.544 MBPS | Line#A | DS1 Link |t | R |---------------+ - - - - - - - - - +------> |h | | | | |e | O | 1.544 MBPS | Line#B | DS1 Link |r | |---------------+ - - - - - - - - - - +------> |n | U | | CSU Shelf | |e | | 1.544 MBPS | Line#C | DS1 Link |t | T |---------------+ - - - -- -- - - - - +------> | | | | | |-----| E | 1.544 MBPS | Line#D | DS1 Link | | |---------------+ - - - - -- - - - - +------> | | R | |_____________________| | | | | +-----+ The assignment of the index values could for example be: ifIndex (= dsx1IfIndex) dsx1LineIndex 1 NA NA (Ethernet) 2 Line#A Router Side 6 2 Line#A Network Side 7 3 Line#B Router Side 8 3 Line#B Network Side 9 4 Line#C Router Side 10 4 Line#C Network Side 11 5 Line#D Router Side 12 5 Line#D Network Side 13
For this example, ifNumber is equal to 5. Note the following
description of dsx1LineIndex: the dsx1LineIndex identifies a DS1
Interface on a managed device. If there is an ifEntry that is
directly associated with this and only this DS1 interface, it should
have the same value as ifIndex. Otherwise, number the
dsx1LineIndices with an unique identifier following the rules of
choosing a number greater than ifNumber and numbering inside
interfaces (e.g., equipment side) with even numbers and outside
interfaces (e.g., network side) with odd numbers.
If the CSU shelf is managed by itself by a local SNMP Agent, the
situation would be:
ifIndex (= dsx1IfIndex) dsx1LineIndex
1 Line#A Network Side 1
2 Line#A RouterSide 2
3 Line#B Network Side 3
4 Line#B RouterSide 4
5 Line#C Network Side 5
6 Line#C Router Side 6
7 Line#D Network Side 7
8 Line#D Router Side 8
Appendix B - The delay approach to Unavailable Seconds.
This procedure is illustrated below for a DS1 ESF interface. Similar
rules would apply for other DS1, DS2, and E1 interface variants. The
procedure guarantees that the statistical counters are correctly
updated at all times, although they lag real time by 10 seconds. At
the end of each 15 minutes interval the current interval counts are
transferred to the most recent interval entry and each interval is
shifted up by one position, with the oldest being discarded if
necessary in order to make room. The current interval counts then
start over from zero. Note, however, that the signal state
calculation does not start afresh at each interval boundary; rather,
signal state information is retained across interval boundaries.
+---------------------------------------------------------------------+
| READ COUNTERS & STATUS INFO FROM HARDWARE |
| |
| BPV EXZ LOS FE CRC CS AIS SEF OOF LOF RAI G1-G6 SE FE LV SL |
+---------------------------------------------------------------------+
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
V V V V V V V V V V V V V V V V
+---------------------------------------------------------------------+
| ACCUM ONE-SEC STATS, CHK ERR THRESHOLDS, & UPDT SIGNAL STATE |
| |
| |<---------- NEAR END ----------->| |<-------- FAR END ------>| |
| |
| LCV LES PCV ES CSS BES SES SEFS A/U PCV ES CSS BES SES SEFS A/U |
+---------------------------------------------------------------------+
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
V V V V V V V V | V V V V V V |
+------------------------------+ | +----------------------+ |
| ONE-SEC DELAY | | | ONE-SEC DELAY | |
| (1 OF 10) | | | (1 OF 10) | |
+------------------------------+ | +----------------------+ |
| | | | | | | | | | | | | | | |
/ / / / / / / / / / / / / / / /
| | | | | | | | | | | | | | | |
V V V V V V V V | V V V V V V |
+------------------------------+ | +----------------------+ |
| ONE-SEC DELAY | | | ONE-SEC DELAY | |
| (10 OF 10) | | | (10 OF 10) | |
+------------------------------+ | +----------------------+ |
| | | | | | | | | | | | | | | |
V V V V V V V V V V V V V V V V
+---------------------------------------------------------------------+
| UPDATE STATISTICS COUNTERS |
| |
|<-------------- NEAR END ----------->| |<--------- FAR END---------> |
| |
|LCV LES PCV ES CSS BES SES SEFS UAS DM PCV ES CSS BES SES SEFS UAS DM|
+---------------------------------------------------------------------+
Note that if such a procedure is adopted there is no current interval
data for the first ten seconds after a system comes up.
noSuchInstance must be returned if a management station attempts to
access the current interval counters during this time.
It is an implementation-specific matter whether an agent assumes that
the initial state of the interface is available or unavailable.
Author's Address
Orly Nicklass (editor) RAD Data Communications, Ltd. Ziv Tower, 24 Roul Walenberg Tel Aviv, Israel, 69719 Phone: 9723-765-9969 EMail: orly_n@rad.com
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