Unisphere-Data-V35-MIB

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Organization: Unisphere Networks, Inc.

Last Updated: 2002-02-08

Category: Juniper/Unisphere Broadband

Description: Manages V.35 serial WAN interface configuration and statistics on Unisphere ERX routers.

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What Is Unisphere-Data-V35-MIB?

Unisphere-Data-V35-MIB is a vendor MIB for Unisphere/Juniper ERX edge routers covering V.35 (and X.21) serial WAN interfaces, a physical-layer standard historically used for leased-line and frame relay connections. It exposes a per-interface table with type, mode (DTE/DCE), clock rate, NRZ encoding, transmit clock source, DCD-ignore flag, and loopback control. Its monitoring focus is interface/hardware configuration oriented: confirming the serial line is clocked and framed correctly and detecting when a loopback has been left enabled, which would explain a WAN link appearing down or looping traffic. It relies on standard interface-stack (ifIndex) conventions shared with the IETF IF-MIB to associate V.35 physical settings with the corresponding logical interface. It was deployed on Unisphere/Juniper ERX routers wherever legacy V.35/X.21 serial WAN circuits were still in use for leased-line connectivity. Network engineers evaluating or troubleshooting this functionality can download the Unisphere-Data-V35-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Unisphere-Data-V35-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

Juniper/Unisphere ERX edge router with V.35/X.21 serial WAN interfaces

Monitoring Examples

An operator troubleshooting a serial WAN link would check usdV35IfTable/usdV35IfEntry for usdV35IfMode, usdV35IfClockRate, and usdV35IfTxClock to confirm the DTE/DCE clocking configuration matches the far-end device, and check usdV35IfLoopback to rule out a stuck loopback causing the link to appear inactive. usdV35IfIgnoreDcd and usdV35IfNrzEncoding would also be reviewed if framing errors are suspected. A usdV35IfLoopback value left enabled after a maintenance test is a classic cause of an unexpectedly down-looking serial interface.

What Can Be Monitored

V.35 interface mode (DTE/DCE)
clock rate and clock source
loopback status
NRZ encoding setting
DCD ignore flag

Imported Objects

From IF-MIB

InterfaceIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From Unisphere-Data-MIBs

usDataMibs

MODULE-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
usdV35MIB	1.3.6.1.4.1.4874.2.2.59			The X.21/V.35 Server MIB for the Unisphere Networks enterprise.
usdV35Objects	1.3.6.1.4.1.4874.2.2.59.1
usdV35IfTable	1.3.6.1.4.1.4874.2.2.59.1.2		not-accessible	This table contains entries for X.21/V.35 interfaces present in the system. This table provides an extension to the Unisphere-Data-HDLC-MIB.usdHdlcIfTable for HDLC interfaces that support X.21/V.35 signalling.
usdV35IfEntry	1.3.6.1.4.1.4874.2.2.59.1.2.1		not-accessible	Each entry describes the characteristics of an X.21/V.35 interface.
NUM usdV35IfIndex	1.3.6.1.4.1.4874.2.2.59.1.2.1.1	InterfaceIndex	not-accessible	The ifIndex of the X.21/V.35 interface. It has the same value as the usdHdlcIfIndex for the common interface.
INT usdV35IfType	1.3.6.1.4.1.4874.2.2.59.1.2.1.2	INTEGER	read-only	Read only parameter of interface type X.21/V.35.
INT usdV35IfMode	1.3.6.1.4.1.4874.2.2.59.1.2.1.3	INTEGER	read-only	Read only parameter of interface mode of interface X.21/V.35 Data Terminating Equipment(DTE)/Data Communication Equipment(DCE).
U32 usdV35IfClockRate	1.3.6.1.4.1.4874.2.2.59.1.2.1.4	Unsigned32	read-write	The clock rate setting in hertz for this X.21/V.35 interface. Only the following values are valid: 1200, 2400, 4800, 9600, 19200, 38400, 56000, 64000, 128000, 1024000, 1536000, 2048000, 3072000, 4096000, 4915200, 6144000, and 8192000. If a value other than one of the predefined values is set, then the closest matching value is used. The clock rate parameter is only meaningful when the interface is in DCE mode. When the interface is in DTE mode, the value is simply ignored.
INT usdV35IfNrzEncoding	1.3.6.1.4.1.4874.2.2.59.1.2.1.5	INTEGER	read-write	The non-return-to-zero (NRZ) encoding for X.21/V.35 interface. Inverted encoding is provided with NRZI-encoding command, which is non-return-to-zero inverted (NRZI) encoding.
INT usdV35IfTxClock	1.3.6.1.4.1.4874.2.2.59.1.2.1.6	INTEGER	read-write	There is an option of inverting the transmit clock signal for X.21/V.35 interface. Inverting the tranmit clock is used to compensate for skews between the clock and data when transmitting across long cables at fast data rates.
INT usdV35IfIgnoreDcd	1.3.6.1.4.1.4874.2.2.59.1.2.1.7	INTEGER	read-write	When in X.21/V.35 DTE mode we have the capability of ignoring the DCD signal in determining whether or not an interface is up.
INT usdV35IfLoopback	1.3.6.1.4.1.4874.2.2.59.1.2.1.8	INTEGER	read-write	Loopback interface is configured (or not) for X.21/V.35 interface
usdV35Conformance	1.3.6.1.4.1.4874.2.2.59.4
usdV35Compliances	1.3.6.1.4.1.4874.2.2.59.4.1
usdV35Compliance	1.3.6.1.4.1.4874.2.2.59.4.1.1			The compliance statement for entities that implement the Unisphere X.21/V.35 MIB.
usdV35Groups	1.3.6.1.4.1.4874.2.2.59.4.2
usdV35Group	1.3.6.1.4.1.4874.2.2.59.4.2.1			A collection of objects providing management of X.21/V.35 interfaces in a Unisphere product.

RFC description

Manages X.21/V.35 serial interface configuration and status for Unisphere Networks enterprise routers.

Start monitoring Juniper/Unisphere ERX edge router with V.35/X.21 serial WAN interfaces (clock-rate/loopback config status) 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 Unisphere-Data-V35-MIB

What Is Unisphere-Data-V35-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description