CISCO-ATM-IF-PHYS-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 1996-09-19

Category: ATM, Network Interfaces

Description: Manages ATM physical layer interface attributes on Cisco ATM platforms.

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What Is CISCO-ATM-IF-PHYS-MIB?

CISCO-ATM-IF-PHYS-MIB is a minimal Cisco MIB, per its module description, for tracking the physical-layer status of DS3/E3/DS1/E1 and SONET interfaces used to carry ATM traffic. Its data is dominated by physical-line fault/error statistics: parity errors, line-code violations (LCV), FEBE errors and PLCP BIP violations, alongside an overall interface status object. Its monitoring emphasis is squarely on hardware/link status: ciscoAtmIfPhysStatus gives the summary condition of the physical circuit, backed by detailed error counters showing exactly what kind of transmission degradation is occurring. It is explicitly scoped as a minimal companion to the standard DS1/DS3/SONET MIBs and the IETF ATM-MIB, adding only the ATM-relevant physical error counters not already covered there. It is used on Cisco routers/switches with DS1/DS3/E1/E3/SONET-based ATM physical interfaces in carrier/enterprise WAN links. Engineers can download the CISCO-ATM-IF-PHYS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-ATM-IF-PHYS-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Cisco router/switch with DS1/DS3/E1/E3/SONET ATM physical interfaces

Monitoring Examples

ciscoAtmIfPhysTable's ciscoAtmIfPhysStatus gives the overall health of a DS3/SONET-based ATM physical circuit, while ciscoAtmIfPhysLcvErrors, CBitParityErrors and LineFebeErrors/PathFebeErrors expose the specific error types accumulating on that line. A sudden increase in ciscoAtmIfPhysPlcpBipViolations alongside a status change away from normal would indicate a physical-layer signal-quality problem, such as a bad cable or CSU/DSU, on that ATM circuit.

What Can Be Monitored

ATM physical interface overall status
line/path parity errors
line code violations (LCV)
FEBE errors
PLCP BIP violations

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From RFC1213-MIB

ifIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using ciscoAtmIfPhysSectionParityErrors OID:

Select a Cisco router/switch with DS1/DS3/E1/E3/SONET ATM interface as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type ciscoAtmIfPhysSectionParityErrors into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The number of B1 (BIP) errors on the physical interface. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoAtmIfPhysMIB	1.3.6.1.4.1.9.9.45			A minimal set of managed objects for tracking the status of DS3/E3/DS1/E1 and SONET interfaces.
ciscoAtmIfPhysMIBObjects	1.3.6.1.4.1.9.9.45.1
ciscoAtmIfPhysTable	1.3.6.1.4.1.9.9.45.1.1		not-accessible	A table containing basic status and statistics for the physical layer of ATM interfaces.
ciscoAtmIfPhysEntry	1.3.6.1.4.1.9.9.45.1.1.1		not-accessible	Basic status and statistics for the physical layer of an ATM interface.
INT ciscoAtmIfPhysStatus	1.3.6.1.4.1.9.9.45.1.1.1.1	INTEGER	read-only	The status of the physical interface. The value of this object is only valid when the interface's ifAdminStatus has the value 'up'. Note that some of the enumerated values are specific to a particular physical layer.
C32 ciscoAtmIfPhysSectionParityErrorsEx	1.3.6.1.4.1.9.9.45.1.1.1.2	Counter32	read-only	The number of B1 (BIP) errors on the physical interface. This object is only present for SONET interfaces.
C32 ciscoAtmIfPhysLineParityErrors	1.3.6.1.4.1.9.9.45.1.1.1.3	Counter32	read-only	The number of B2 (BIP) errors on the physical interface. This object is only present for SONET interfaces.
C32 ciscoAtmIfPhysPathParityErrors	1.3.6.1.4.1.9.9.45.1.1.1.4	Counter32	read-only	The number of B3 (BIP) errors on the physical interface. This object is only present for SONET interfaces.
C32 ciscoAtmIfPhysLcvErrors	1.3.6.1.4.1.9.9.45.1.1.1.5	Counter32	read-only	The number of Line Code Violation errors on the physical interface. This object is only present for DS3/E3/DS1/E1 interfaces.
C32 ciscoAtmIfPhysCBitParityErrors	1.3.6.1.4.1.9.9.45.1.1.1.6	Counter32	read-only	The number of C-bit parity violations on the physical interface. This object is only present for DS3 interfaces.
C32 ciscoAtmIfPhysPBitParityErrors	1.3.6.1.4.1.9.9.45.1.1.1.7	Counter32	read-only	The number of P-bit parity violations or E3 G.832 BIP-8 errors on the physical interface. This object is present only for DS3/E3 interfaces.
C32 ciscoAtmIfPhysPlcpBipViolations	1.3.6.1.4.1.9.9.45.1.1.1.8	Counter32	read-only	The number of PLCP BIP violations on the physical interface. This object is only present for DS3/E3/DS1/E1 interfaces.
C32 ciscoAtmIfPhysLineFebeErrors	1.3.6.1.4.1.9.9.45.1.1.1.9	Counter32	read-only	The number of Z2 (Line FEBE) errors on the physical interface. This object is only present for SONET interfaces.
C32 ciscoAtmIfPhysPathFebeErrors	1.3.6.1.4.1.9.9.45.1.1.1.10	Counter32	read-only	The number of G1 (Path FEBE) errors on the physical interface. This object is only present for SONET interfaces.
INT ciscoAtmIfPhysCellPayloadScrambling	1.3.6.1.4.1.9.9.45.1.1.1.11	INTEGER	read-write	The status of whether cell payload scrambling is enabled or disabled on the physical interface.
INT ciscoAtmIfPhysStsStreamScrambling	1.3.6.1.4.1.9.9.45.1.1.1.12	INTEGER	read-write	The status of whether STS-stream scrambling is enabled or disabled on the physical interface.
INT ciscoAtmIfPhysFramingMode	1.3.6.1.4.1.9.9.45.1.1.1.13	INTEGER	read-write	The framing format present on the physical interface. 'sonet' indicates sts-3c or sts-12c format and applies only to OC-3 and OC-12 type interfaces, respectively. 'sdh' indicates stm1 or stm4 format and applies only to OC-3 and OC-12 type interfaces, respectively. 'ds3m23adm' indicates M23 ADM mode and applies only to DS3 type interfaces. 'ds3m23plcp' indicates M23 PLCP mode and applies only to DS3 type interfaces. 'ds3cbitadm' indicates C-BIT ADM mode and applies only to DS3 type interfaces. 'ds3cbitplcp' indicates C-BIT PLCP mode and applies only to DS3 type interfaces. 'e3g832adm' indicates G.832 ADM mode and applies only to E3 type interfaces. 'e3g751adm' indicates G.751 ADM mode and applies only to E3 type interfaces. 'e3g751plcp' indicates G.751 PLCP mode and applies only to E3 type interfaces. 'ds1sfadm' indicates DS1 SF ADM mode and applies only to DS1 type interfaces. 'ds1esfadm' indicates DS1 ESF ADM mode and applies only to DS1 type interfaces. 'ds1sfplcp' indicates DS1 SF PLCP mode and applies only to DS1 type interfaces. 'ds1esfplcp' indicates DS1 ESF PLCP mode and applies only to DS1 type interfaces. 'e1adm' indicates E1 ADM mode and applies only to E1 type interfaces. 'e1plcp' indicates E1 PLCP mode and applies only to E1 type interfaces. 'e1crcadm' indicates E1 CRC-4 ADM mode and applies only to E1 type interfaces. 'e1crcplcp' indicates E1 CRC-4 PLCP mode and applies only to E1 type interfaces.
INT ciscoAtmIfPhysLoopbackConfig	1.3.6.1.4.1.9.9.45.1.1.1.14	INTEGER	read-write	The loopback configured on the physical interface: 'noLoop' indicates no loopback is present. 'diagnosticLoop' indicates transmit data stream is looped to the receive direction. 'lineLoop' indicates receive data stream is looped to the transmit direction. 'otherLoop' indicates loopbacks that are not defined here.
INT ciscoAtmIfPhysLineBuildOut	1.3.6.1.4.1.9.9.45.1.1.1.15	INTEGER	read-write	The line buildout configured on the transmit signal: 'e3AllCables' applies to all cables of E3 physical interfaces. 'ds3CablesUnder225' applies to cables under 225 feet of DS3 physical interfaces. 'ds3CablesOver225' applies to cables over 225 feet of DS3 physical interfaces. 'ds1Cables0To110' applies to cables 0 to 110 feet of DS1 physical interfaces. 'ds1Cables110To220' applies to cables 110 to 220 feet of DS1 physical interfaces. 'ds1Cables220To330' applies to cables 220 to 330 feet of DS1 physical interfaces. 'ds1Cables330To440' applies to cables 330 to 440 feet of DS1 physical interfaces. 'ds1Cables440To550' applies to cables 440 to 550 feet of DS1 physical interfaces. 'ds1Cables550To660' applies to cables 550 to 660 feet of DS1 physical interfaces. 'ds1CablesOver600' applies to cables over 600 feet of DS1 physical interfaces. 'e1AllCables' applies to all cables of E1 physical interfaces.
INT ciscoAtmIfPhysTransmitClockSource	1.3.6.1.4.1.9.9.45.1.1.1.16	INTEGER	read-write	The source of the tranmit clock: 'loopTiming' indicates that the recovered receive clock is used as the transmit clock. 'freeRunning' indicates that a local clock source is used. 'networkDerived' indicates that recovered receive clock from another interface is used as the transmit clock source.
INT ciscoAtmIfPhysClockSourcePriority	1.3.6.1.4.1.9.9.45.1.1.1.17	INTEGER	read-write	The priority of this interface if configured as a network clock source. 'notConfigured' indicates this is not configured as a network clock source.
INT ciscoAtmIfPhysClockSourceStatus	1.3.6.1.4.1.9.9.45.1.1.1.18	INTEGER	read-only	The network clock source status of this interface: 'notSelected' indicates this is not selected as the network clock source. 'selected' indicates this is selected as the network clock source.
C32 ciscoAtmIfPhysDS1BitErrors	1.3.6.1.4.1.9.9.45.1.1.1.19	Counter32	read-only	The number of bit errors (CRC-6 error in ESF mode and framing bit error in SF mode) on the physical interface. This object is only present for DS1 interfaces.
C32 ciscoAtmIfPhysE1CrcErrors	1.3.6.1.4.1.9.9.45.1.1.1.20	Counter32	read-only	The number of CRC errors (in CRC-4 mode) on the physical interface. This object is only present for E1 interfaces.
INT ciscoAtmIfPhysLineCode	1.3.6.1.4.1.9.9.45.1.1.1.21	INTEGER	read-write	The line coding present on the physical interface This object is only present for DS1/E1 interfaces. 'ami' indicates alternate mark inversion (AMI) line code on the DS1/E1 interface. 'b8zs' indicates B8ZS line code on the physical interface and applies only to DS1 interfaces. 'hdb3' indicates HDB3 line code on the physical interface and applies only to E1 interfaces.
ciscoAtmIfPhysMIBConformance	1.3.6.1.4.1.9.9.45.3
ciscoAtmIfPhysMIBCompliances	1.3.6.1.4.1.9.9.45.3.1
ciscoAtmIfPhysMIBCompliance	1.3.6.1.4.1.9.9.45.3.1.1			The compliance statement for entities which implement the Cisco ATM Interface Physical MIB.
ciscoAtmIfPhysMIBCompliance2	1.3.6.1.4.1.9.9.45.3.1.2			The compliance statement for entities which implement the Cisco ATM Interface Physical MIB.
ciscoAtmIfPhysMIBCompliance3	1.3.6.1.4.1.9.9.45.3.1.3			The compliance statement for entities which implement the Cisco ATM Interface Physical MIB.
ciscoAtmIfPhysMIBGroups	1.3.6.1.4.1.9.9.45.3.2
ciscoAtmIfPhysMIBCommonGroup	1.3.6.1.4.1.9.9.45.3.2.1			A collection of objects common to all ATM physical layer interfaces.
ciscoAtmIfPhysMIBSonetGroup	1.3.6.1.4.1.9.9.45.3.2.2			A collection of objects for ATM SONET interfaces.
ciscoAtmIfPhysMIBDs3E3Group	1.3.6.1.4.1.9.9.45.3.2.3			A collection of objects for ATM DS3/E3 interfaces.
ciscoAtmIfPhysMIBCommonGroup2	1.3.6.1.4.1.9.9.45.3.2.4			Additional collection of objects common to all ATM physical layer interfaces.
ciscoAtmIfPhysMIBSonetGroup2	1.3.6.1.4.1.9.9.45.3.2.5			Additional collection of objects for ATM SONET interfaces.
ciscoAtmIfPhysMIBDs3Group	1.3.6.1.4.1.9.9.45.3.2.6			Collection of objects for ATM DS3 interfaces.
ciscoAtmIfPhysMIBDs1E1Group	1.3.6.1.4.1.9.9.45.3.2.7			A collection of objects for ATM DS1/E1 interfaces.
ciscoAtmIfPhysMIBDs1Group	1.3.6.1.4.1.9.9.45.3.2.8			A collection of objects for ATM DS1 interfaces.
ciscoAtmIfPhysMIBE1Group	1.3.6.1.4.1.9.9.45.3.2.9			A collection of objects for ATM E1 interfaces.

RFC description

Tracks physical layer status and error statistics for DS3/E3/DS1/E1 and SONET ATM interfaces.

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Download CISCO-ATM-IF-PHYS-MIB