USR-DSX3-MIB

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Category: CommWorks/3Com Access Equipment

Description: Monitors DS3/T3 interface framing, alarms, and performance on CommWorks broadband equipment.

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What Is USR-DSX3-MIB?

USR-DSX3-MIB is a proprietary CommWorks/3Com (US Robotics) MIB for monitoring DS3/T3 wide-area interfaces on their broadband access equipment, complementing the standard DS3 MIB (RFC 2496 / DS3-MIB). No sample objects were available from the source, but a MIB of this kind typically exposes DS3 line configuration (framing format, line coding), current and historical performance statistics, and alarm/error indications such as loss-of-signal, loss-of-frame, and various error-second counters. Its primary role is hardware-level WAN interface health monitoring: confirming the DS3/T3 line is up, correctly framed, and free of alarms or error bursts that would indicate a physical-layer or carrier problem. It very likely depends on or supplements the standard IETF DS3/DSX3-MIB (RFC 2496), extending it with CommWorks-specific line/alarm details. It would be deployed on 3Com/CommWorks carrier-class broadband access concentrators terminating DS3/T3 circuits from a telco. Network engineers evaluating or troubleshooting this functionality can download the USR-DSX3-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in USR-DSX3-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

CommWorks/3Com (US Robotics) broadband access equipment with DS3/T3 WAN interfaces

Monitoring Examples

No sample objects were provided for this MIB, so a concrete object-level monitoring scenario cannot be honestly described; typically an admin would expect to poll DS3 line configuration, current alarm state, and error-second counters to detect a failed or degraded T3 circuit, but the exact object names cannot be confirmed here.

What Can Be Monitored

DS3/T3 line alarm state
framing/line-coding configuration
error-second performance counters
loss-of-signal / loss-of-frame status

Imported Objects

From SNMPv2-SMI

OBJECT-TYPE

From USR-DEFINITIONS-MIB

UsrConfigStatus
UsrDisplayString
usrDsx3	OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
STR usrDsx3ConfigFileName	1.3.6.1.4.1.429.4.43.1	UsrDisplayString	read-only	The name of a ConfigFile to read/write permanent database records. If the value of this object is an empty string, then the NMBA process uses the default name `@file://Dsx3.cfg'.
USR usrDsx3CFMStatusFlag	1.3.6.1.4.1.429.4.43.2	UsrConfigStatus	read-write	Setting the value of this object to `save' causes the values of the Dsx3SlotTable to be written out to the current config file, which is stored in the usrDsx3ConfigFileName object. While the new ConfigFile is being written, the NMBA process will set the value of this flag to `saving''. Any attempts to set the value while it is not `normal' (i.e. the file is currently being written to the ConfigFile) while result in a badValue error being returned. Setting the value to `normal' will result in no action.
usrDsx3ConfigTable	1.3.6.1.4.1.429.4.43.3		not-accessible	USR Specific variable Config table.
usrDsx3ConfigEntry	1.3.6.1.4.1.429.4.43.3.1		not-accessible	An entry in the DSX3/E3 Configuration table.
INT usrDsx3LineIndex	1.3.6.1.4.1.429.4.43.3.1.1	INTEGER	read-only	This object is the identifier of a DSX3/E3 Interface on a managed device. If there is an ifEntry that is directly associated with this and only this DSX3/E3 interface, it should have the same value as ifIndex. Otherwise, number the dsx3LineIndices 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.
INT usrDsx3CableLength	1.3.6.1.4.1.429.4.43.3.1.2	INTEGER	read-write	This variable indicates which compensation measures are to be used with varying cable lengths. usrDsx3ShortHaul refers to cable lengths shorter than xx meters. atmDsx3LongHaul handles cable lengths longer than that.
INT usrDsx3FrameType	1.3.6.1.4.1.429.4.43.3.1.3	INTEGER	read-write	This variable indicates which frame type to use in transmission. usrDsx3Adm sets the Phy to use Direct Mapping on transmit , and usrDsx3Plcp uses the PLCP framing format.
INT usrDsx3PayloadScrambling	1.3.6.1.4.1.429.4.43.3.1.4	INTEGER	read-write	An indicator that tells if this interface is using Payload Scrambling. Setting the variable to enabled sets the Phy interface allow scrambling.
INT usrDsx3TransmitCells	1.3.6.1.4.1.429.4.43.3.1.5	INTEGER	read-only	This object contains the number of cells transmitted in the current valid interval. At the end of each interval the count is reset.
INT usrDsx3RecieveCells	1.3.6.1.4.1.429.4.43.3.1.6	INTEGER	read-only	This object contains the number of cells received in the current valid interval. At the end of each interval the count is reset.

RFC description

Configures and monitors DSX3/E3 serial line parameters including cable length, frame type, scrambling, and cell transmission on USR devices.

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Download USR-DSX3-MIB

What Is USR-DSX3-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description