OCCAM-ETHERLIKE-MIB

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Organization: Occam Networks

Last Updated: 2001-04-27

Category: DSL and Broadband Access

Description: Monitors Ethernet-like interface error counters and collision statistics on Occam Networks DSL broadband equipment.

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What Is OCCAM-ETHERLIKE-MIB?

OCCAM-ETHERLIKE-MIB is deployed on Occam Networks DSL/broadband access equipment and defines generic objects for monitoring Ethernet-like network interfaces, closely modeled on the IEEE 802.3 CSMA/CD standard that its module description explicitly references. It is intended to expose Ethernet-like interface statistics — error and collision counters that supplement the standard ifTable/EtherLike-MIB view — for the vendor's Ethernet ports. Because it tracks per-interface error conditions typical of an EtherLike-style MIB (collisions, alignment errors, frame check sequence errors), it is fundamentally a hardware/interface-health monitoring module used to detect degraded or failing Ethernet links on the access device. As its own description states, it follows the IEEE 802.3 standard for its object semantics, making it a vendor extension layered on that standard rather than an independent data model. The OCCAM-ETHERLIKE-MIB MIB is typically deployed on Occam Networks DSL/broadband access multiplexers where Ethernet uplinks or subscriber-facing Ethernet ports need error-rate monitoring.

IPNetwork Monitor allows you to monitor SNMP objects defined in OCCAM-ETHERLIKE-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

Occam Networks DSL/broadband access multiplexer

Monitoring Examples

No specific object or table names for this MIB were available in the extracted source excerpt, so a concrete polling example can't be grounded in real identifiers here. Based on its module description (an IEEE 802.3-referenced, generic Ethernet-like interface MIB), it would typically be polled for per-interface error and collision counters analogous to the standard EtherLike-MIB's dot3Stats table, where a rising alignment- or FCS-error count on a port would indicate a failing cable or NIC. No sample object names can be honestly cited beyond that generic pattern.

What Can Be Monitored

Ethernet collision counts
alignment errors
frame check sequence (FCS) errors
carrier sense errors
interface link/duplex status

Imported Objects

From IF-MIB

InterfaceIndex
ifIndex	OBJECT-TYPE

From OCCAM-REG-MODULE

occamGenericEtherlikeModules	OBJECT-IDENTITY
occamGenericInterfaceModules	OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE
enterprises
mib-2
transmission

How to Use in IPNetwork Monitor

Example using dot3StatsSingleCollisionFrames OID:

Select an Occam Networks DSL/broadband access multiplexer (Ethernet-like interface error statistics) 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 dot3StatsSingleCollisionFrames 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 successfully transmitted frames on a particular interface for which transmission is inhibited by exactly one collision. 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 sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
org	1.3
dod	1.3.6
internet	1.3.6.1
mgmt	1.3.6.1.2
etherMIB	1.3.6.1.4.1.6066.2.1.2.1.1			The MIB module to describe generic objects for Ethernet-like network interfaces. The following reference is used throughout this MIB module: [IEEE 802.3 Std] refers to: IEEE Std 802.3, 1998 Edition:'Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications', September 1998. Of particular interest is Clause 30, '10Mb/s,100Mb/s and 1000Mb/s Management'.
etherMIBObjects	1.3.6.1.4.1.6066.2.1.2.1.1.1
dot3	1.3.6.1.4.1.6066.2.1.2.1.1.1.7
dot3StatsTable	1.3.6.1.4.1.6066.2.1.2.1.1.1.7.2		not-accessible	Statistics for a collection of ethernet-like interfaces attached to a particular system. There will be one row in this table for each ethernet-like interface in the system.
dot3StatsEntry	1.3.6.1.4.1.6066.2.1.2.1.1.1.7.2.1		not-accessible	Statistics for a particular interface to an ethernet-like medium.
NUM dot3StatsIndex	1.3.6.1.4.1.6066.2.1.2.1.1.1.7.2.1.1	InterfaceIndex	read-only	An index value that uniquely identifies an interface to an ethernet-like medium. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex.
C32 dot3StatsSingleCollisionFramesEx	1.3.6.1.4.1.6066.2.1.2.1.1.1.7.2.1.4	Counter32	read-only	A count of successfully transmitted frames on a particular interface for which transmission is inhibited by exactly one collision. A frame that is counted by an instance of this object is also counted by the corresponding instance of either the ifOutUcastPkts, ifOutMulticastPkts, or ifOutBroadcastPkts, and is not counted by the corresponding instance of the dot3StatsMultipleCollisionFrames object. This counter does not increment when the interface is operating in full-duplex mode. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.
C32 dot3StatsFrameTooLongs	1.3.6.1.4.1.6066.2.1.2.1.1.1.7.2.1.13	Counter32	read-only	A count of frames received on a particular interface that exceed the maximum permitted frame size. The count represented by an instance of this object is incremented when the frameTooLong status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions obtain are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.
dot3Tests	1.3.6.1.4.1.6066.2.1.2.1.1.1.7.6
dot3Errors	1.3.6.1.4.1.6066.2.1.2.1.1.1.7.7
etherConformance	1.3.6.1.4.1.6066.2.1.2.1.1.2
etherGroups	1.3.6.1.4.1.6066.2.1.2.1.1.2.1
etherCompliances	1.3.6.1.4.1.6066.2.1.2.1.1.2.2

RFC description

OCCAM Ethernet-like MIB based on RFC 3635 for describing generic objects for Ethernet-like network interfaces including 10 Gb/sec interface support.

Start monitoring Occam Networks DSL/broadband access multiplexer (Ethernet-like interface error statistics) 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 OCCAM-ETHERLIKE-MIB