XEDIA-HDLC-MIB

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Organization: Xedia Corp.

Last Updated: 1997-03-25

Category: Xedia Enterprise Networking

Description: Monitors Xedia Corp. HDLC serial interface framing statistics, error counts, and link state.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock 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.

What Is XEDIA-HDLC-MIB?

This proprietary MIB from Xedia Corporation, a vendor of multiservice access routers, manages HDLC (High-Level Data Link Control) serial interfaces on Xedia devices. It exposes both configuration objects, such as clocking mode and CRC mode, and runtime statistics counters covering framing errors, aborts, overruns, and underflows on the HDLC link. This gives administrators direct visibility into the hardware/link-layer health of serial WAN connections, since rising error/abort counts point to cabling, clocking, or line-quality problems. The module explicitly notes it extends objects from IETF's Ethernet-Like Interface MIB, showing a dependency on that standard framework. It is deployed on Xedia access routers using HDLC-framed serial or leased-line WAN circuits. Engineers can download the XEDIA-HDLC-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in XEDIA-HDLC-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

Xedia multiservice access router

Monitoring Examples

An administrator would poll xhdlcStatsTable/xhdlcStatsEntry for counters like xhdlcStatsInAborts, xhdlcStatsInOverrun, xhdlcStatsInResidualBits, and xhdlcStatsOutErrorUnderFlows to detect a degrading HDLC link. A steady climb in xhdlcStatsInAborts or xhdlcStatsInInvalidLen alongside a mismatched xhdlcConfigClocking or xhdlcConfigCrcMode setting in xhdlcConfigTable would point to a clock-source mismatch between the two ends of the link. The xhdlcConformance/xhdlcCompliances/xhdlcGroups objects are conformance-only and not runtime monitoring data.

What Can Be Monitored

HDLC input aborts
HDLC input overruns
output underflow errors
invalid frame length count
clocking mode
CRC mode configuration

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE

From XEDIA-REG

xediaMibs

OBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using xhdlcStatsOutErrorUnderFlows OID:

Select a Xedia multiservice access router (HDLC framing-error/abort/underflow counter status) 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 xhdlcStatsOutErrorUnderFlows 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. It reports a count of TX Errorunderflows on a particular 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
xediaHdlcMIB	1.3.6.1.4.1.838.3.7			This module defines proprietary objects that extend those in IETF's the Ethernet-Like Interface MIB.
xhdlcObjects	1.3.6.1.4.1.838.3.7.1
xhdlcStatsTable	1.3.6.1.4.1.838.3.7.1.1		not-accessible	Additional Xedia proprietary statistics for hdlc-like interfaces.
xhdlcStatsEntry	1.3.6.1.4.1.838.3.7.1.1.1		not-accessible	Additional Xedia proprietary statistics for single hdlc-like interface.
C32 xhdlcStatsOutErrorUnderFlowsEx	1.3.6.1.4.1.838.3.7.1.1.1.1	Counter32	read-only	A count of TX Errorunderflows on a particular interface.
C32 xhdlcStatsInAborts	1.3.6.1.4.1.838.3.7.1.1.1.2	Counter32	read-only	A count of RX Aborts on a particular interface.
C32 xhdlcStatsInResidualBits	1.3.6.1.4.1.838.3.7.1.1.1.3	Counter32	read-only	The count of residual bit errors.
C32 xhdlcStatsInInvalidLen	1.3.6.1.4.1.838.3.7.1.1.1.4	Counter32	read-only	A count of RX invalid lengths on a particular interface.
C32 xhdlcStatsInOverrun	1.3.6.1.4.1.838.3.7.1.1.1.5	Counter32	read-only	A count of RX Overruns on a particular interface.
xhdlcConfigTable	1.3.6.1.4.1.838.3.7.1.2		not-accessible	Xedia proprietary configuration parameters for hdlc-like interfaces.
xhdlcConfigEntry	1.3.6.1.4.1.838.3.7.1.2.1		not-accessible	Xedia proprietary configuration parameters for single hdlc-like interface.
INT xhdlcConfigClocking	1.3.6.1.4.1.838.3.7.1.2.1.1	INTEGER	read-write	The configured clocking of the interface.
INT xhdlcConfigCrcMode	1.3.6.1.4.1.838.3.7.1.2.1.2	INTEGER	read-write	The configured CRC mode of the interface.
xhdlcConformance	1.3.6.1.4.1.838.3.7.2
xhdlcCompliances	1.3.6.1.4.1.838.3.7.2.1
xhdlcCompliance	1.3.6.1.4.1.838.3.7.2.1.1			The compliance statement for all agents that support this MIB. A compliant agent implements all objects defined in this MIB.
xhdlcGroups	1.3.6.1.4.1.838.3.7.2.2
xhdlcGroup	1.3.6.1.4.1.838.3.7.2.2.1			The set of all accessible objects in this MIB.

RFC description

Xedia vendor-private MIB for managing High-Level Data Link Control (HDLC) protocol on Xedia network devices.

Start monitoring Xedia multiservice access router (HDLC framing-error/abort/underflow counter 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 XEDIA-HDLC-MIB