Fore-DSX1-MIB

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Organization: FORE

Last Updated: 1999-11-05

Category: ATM, Domain: WAN/TDM, Vendor: Fore Systems (ATM)

Description: Fore Systems DSX1 interface extension MIB providing enhanced T1/E1 framing and performance monitoring objects for ForeRunner ATM switch DS1 ports.

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What Is Fore-DSX1-MIB?

Fore-DSX1-MIB is a vendor extension MIB from Fore Systems (later part of Marconi/GE) that augments the standard DS1/E1 (DSX1) MIB for FORE's ForeRunner ATM switch platforms. It exposes configuration and status data for T1/E1 line modules, including line coding, line length, impedance, facility data link (FDL) settings, and AIS (Alarm Indication Signal) conditions. Monitoring this MIB lets an operator check the hardware health of individual DS1 ports, tracking line configuration mismatches, upstream AIS alarms, and FDL performance report status that signal physical layer faults on the interface. It extends and depends on the standard DS1/E1 MIB (RFC 1406/2495) by adding FORE-specific line index, port model, and admin status objects rather than duplicating base counters. It is deployed on ForeRunner ATM edge/core switches where DS1/E1 circuits provide WAN access, with Fore-DSX1-MIB SNMP monitoring typically polled by carrier or enterprise NOC tools alongside the standard DS1 MIB.

IPNetwork Monitor allows you to monitor SNMP objects defined in Fore-DSX1-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

Fore Systems ForeRunner ATM switch
T1/E1 (DSX1) WAN interface module

Monitoring Examples

An admin polls dsx1ForeConfTable/dsx1ForeConfEntry indexed by dsx1ForeLineIndex to confirm dsx1ForeLineLength and dsx1ForeLineImpedance match the physical cabling for a given DSX1 port. A sudden dsx1ForeUpStreamAIS assertion combined with an unexpected dsx1ForeAdminStatus change would indicate the upstream carrier facility has dropped or the port was administratively taken down. Polling dsx1ForeFdlPerfConf and dsx1ForeFdlBomConf reveals whether facility data link performance reporting (ESF FDL) is active for detecting line errors.

What Can Be Monitored

DSX1 line coding/receive code
line length setting
line impedance
FDL configuration
upstream AIS alarm status
port admin status

Imported Objects

From Fore-Common-MIB

asx	OBJECT-IDENTITY

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using dsx1ForeFramingLOSs OID:

Select a Fore Systems (later Marconi) ForeRunner ATM switch (T1/E1 DSX1 WAN interface module) 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 dsx1ForeFramingLOSs 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 secondsx in which Loss Of Signal (LOS) errors have been detected. 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
foreDsx1	1.3.6.1.4.1.326.2.2.1.1.10			MIB module for supporting the DSX1 port module.
dsx1ForeConfGroup	1.3.6.1.4.1.326.2.2.1.1.10.1
dsx1ForeConfTable	1.3.6.1.4.1.326.2.2.1.1.10.1.1		not-accessible	A table of DSX1 switch port configuration information.
dsx1ForeConfEntry	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1		not-accessible	A table entry containing DSX1 configuration information for each port. Not all RFC1406 configuration table variables are included, and some are modified.
I32 dsx1ForeLineIndex	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.1	Integer32	read-only	This object is the identifier of a DS1 Inter- face on a managed device. If there is an ifEn- try that is directly associated with this and only this DS1 interface, it should have the same value as ifIndex. Otherwise, the value exceeds ifNumber, and is a unique identifier following this rule: inside interfaces (e.g., equipment side) with even numbers and outside interfaces (e.g., network side) with odd numbers.
INT dsx1ForeReceiveCode	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.2	INTEGER	read-only	This variable indicates the type of code that was received across the DSX interface. The values mean: dsx1ReceiveNoCode receiving looped or normal data dsx1ReceiveLineCode receiving request for a line loopback dsx1ReceivePayloadCode receiving a request for a payload loopback dsx1ReceiveResetCode receiving a loopback deactivation request dsx1ReceiveQRS receiving a Quasi-Random Signal (QRS) test pattern dsx1Receive511Pattern receiving a 511 bit fixed test pattern dsx1Receive3in24Pattern receiving a fixed test pattern of 3 bits set in 24 dsx1ReceiveTestPattern receiving a test pattern other than the above.
INT dsx1ForeLineLength	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.3	INTEGER	read-write	This variable represents the length of the physical cable connected to the dsx1 port. The user has to set this object to match the physical cable in order to get the netmod to receive the signal on the cable. The different values are: dsx1LineLt40 (1) means the line is shorter than 40m, dsx1Line40-80 (2) means the line length is between 40m and 80m, dsx1Line80-120 (3) means the line length is between 80m and 120m, dsx1Line120-160 (4) means the line length is between 120m and 160m, dsx1Line160-200 (5) means the line length is between 160m and 200m, dsx1LineE1Coax (6) means E1 Coax line, not applicable for T1, dsx1LineTwistedPair (7) means E1 Twisted Pair line, not applicable for T1.
INT dsx1ForeFdlConfiguration	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.4	INTEGER	read-write	This varialbe indicate whether the FDL state machine acts as network or user side
I32 dsx1ForeLineImpedance	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.5	Integer32	read-write	The default line impedance of the E1 line. Note that this is not applicable for T1
INT dsx1ForeFdlPerfConf	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.6	INTEGER	read-write	This variable indicate whether the FDL state machine is enabled or turned off for performance reports. See T1.403 for details.
INT dsx1ForeFdlBomConf	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.7	INTEGER	read-write	This variable indicate whether Bit Oriented Messages will be generated and transmitted. See T1.403 for details.
INT dsx1ForeUpStreamAIS	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.8	INTEGER	read-write	The upsteam AIS alarm generation flag enabled: the upstream AIS is generated disabled: the upstream AIS is not generated
I32 dsx1ForePortModel	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.9	Integer32	read-only	The underlying hardware port model. The value corresponds to the hwPortModel mib variable.
INT dsx1ForeAdminStatus	1.3.6.1.4.1.326.2.2.1.1.10.1.1.1.10	INTEGER	read-write	The desired state of the interface. The testing(3) state indicates that no operational packets can be passed. When a managed system initializes, all interfaces start with adminStatus in the down(2) state. As a result of either explicit management action or per configuration information retained by the managed system, adminStatus is then changed to either the up(1) or testing(3) states (or remains in the down(2) state).
dsx1ForeStatsGroup	1.3.6.1.4.1.326.2.2.1.1.10.2
dsx1ForeFramingTable	1.3.6.1.4.1.326.2.2.1.1.10.2.1		not-accessible	A table of DSX1 framing statistics information.
dsx1ForeFramingEntry	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1		not-accessible	A table entry containing DSX1 framing statistics information.
I32 dsx1ForeFramingIndex	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.1	Integer32	read-only	The number of this port.
C32 dsx1ForeFramingLOSsEx	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.2	Counter32	read-only	The number of secondsx in which Loss Of Signal (LOS) errors have been detected.
C32 dsx1ForeFramingLCVs	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.3	Counter32	read-only	The number of Line Code Violations (LCV) that have been detected.
C32 dsx1ForeFramingFERRs	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.4	Counter32	read-only	The number of Framing ERRor (FERR) events that have been detected.
C32 dsx1ForeFramingOOFs	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.5	Counter32	read-only	The number of Out Of Frame (OOF) error events that have been detected.
C32 dsx1ForeFramingAISs	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.6	Counter32	read-only	The number of secondsx in which Alarm Indication Signals (AIS) have been detected. AIS indicates that an upstream failure has been detected by the far end.
C32 dsx1ForeFramingB8ZSPatterns	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.7	Counter32	read-only	The number of seconds in which B8ZS Pattern events have been detected.
C32 dsx1ForeFraming8Zeros	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.8	Counter32	read-only	The number of seconds in which 8 Zeros events have been detected.
C32 dsx1ForeFraming16Zeros	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.9	Counter32	read-only	The number of seconds in which 16 Zeros events have been detected.
C32 dsx1ForeFramingYellowAlarms	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.10	Counter32	read-only	The number of secondsx in which Yellow Alarm events have been detected.
C32 dsx1ForeFramingRedAlarms	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.11	Counter32	read-only	The number of secondsx in which Red Alarm events have been detected.
C32 dsx1ForeFramingBEEs	1.3.6.1.4.1.326.2.2.1.1.10.2.1.1.12	Counter32	read-only	The number of Bit Encoding Error (BEE) events that have been detected.
dsx1ForeAtmTable	1.3.6.1.4.1.326.2.2.1.1.10.2.2		not-accessible	A table of DSX1 ATM statistics information.
dsx1ForeAtmEntry	1.3.6.1.4.1.326.2.2.1.1.10.2.2.1		not-accessible	A table entry containing DSX1 ATM statistics information.
I32 dsx1ForeAtmIndex	1.3.6.1.4.1.326.2.2.1.1.10.2.2.1.1	Integer32	read-only	The ifIndex of this port, actually it's currently the ifIndex of the associaated dsx1 port not the ATM port as currently they are assumed to be the same thing which of course they are not
C32 dsx1ForeAtmRxCells	1.3.6.1.4.1.326.2.2.1.1.10.2.2.1.2	Counter32	read-only	Number of ATM cells that were received.
C32 dsx1ForeAtmTxCells	1.3.6.1.4.1.326.2.2.1.1.10.2.2.1.3	Counter32	read-only	Number of non-null ATM cells that were transmitted.

RFC description

Manages DS1 port module configuration and statistics on Fore Systems ATM switches.

Start monitoring Fore Systems (later Marconi) ForeRunner ATM switch (T1/E1 DSX1 WAN interface module) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download Fore-DSX1-MIB