ATM-FORUM-M4-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsATM-FORUM-M4-MIB

Organization: ATM Forum

Last Updated: 1997-01-21

Category: ATM

Description: Defines ATM Forum M4 network management interface objects for ATM network element management and performance monitoring.

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 ATM-FORUM-M4-MIB?

ATM-FORUM-M4-MIB is the SNMP realization of the ATM Forum's M4 network-element management interface, a vendor-neutral standard for managing ATM switches and network elements. It exposes configuration and inventory data (vendor, hardware/software version, start time), performance/statistics controls (alarm severity thresholds, zero-stats suppression), and physical/logical path tables describing ATM transmission paths and adaptors, effectively publishing the ATM-FORUM-M4-MIB OID list that network management tools traverse to reach these objects. For monitoring, it is used to track ATM network element health and uptime -- atmfM4NeStartTime effectively reflects device uptime/reboot history, atmfM4NeVendor/atmfM4NeVersion expose hardware and software version identification, and the alarm severity index objects surface fault conditions on physical paths. As a formal ATM Forum specification it is a standards-based module independent of any single vendor, though it is implemented within vendor ATM switch firmware alongside vendor-specific MIBs. It is typically deployed in legacy ATM carrier and enterprise backbone networks for centralized network-element-level fault and configuration management.

IPNetwork Monitor allows you to monitor SNMP objects defined in ATM-FORUM-M4-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

  • vendor-neutral, standards-based MIB, not tied to a specific manufacturer
  • ATM switches and network elements

Monitoring Examples

An operator would poll atmfM4NeVendor and atmfM4NeVersion to inventory the software/hardware version running on an ATM switch, and check atmfM4NeStartTime to determine how long the element has been up since its last restart. Walking the atmfM4PhysPathTpTable/atmfM4PhysPathTpEntry rows (indexed by atmfM4PhysPathTpHwUnitIndex and atmfM4PhysPathTpPortID) lets an admin read atmfM4PhysPathTpAlarmSeverityIndex per physical transmission path, revealing which specific port or path is in an alarm state. The atmfM4TcAdaptorTable provides similar per-adaptor configuration/status detail for correlating faults to hardware modules.

What Can Be Monitored

  • network element vendor and version
  • element start time / uptime
  • physical path alarm severity
  • zero-statistics suppression setting
  • adaptor configuration status
Imported Objects

From ATM-FORUM-TC-MIB

atmForumOBJECT-IDENTITY

From ATM-MIB

atmVcCrossConnectEntryOBJECT-TYPE
atmVcCrossConnectHighIfIndexOBJECT-TYPE
atmVcCrossConnectHighVciOBJECT-TYPE
atmVcCrossConnectHighVpiOBJECT-TYPE
atmVcCrossConnectIndexOBJECT-TYPE
atmVcCrossConnectLowIfIndexOBJECT-TYPE
atmVcCrossConnectLowVciOBJECT-TYPE
atmVcCrossConnectLowVpiOBJECT-TYPE
atmVclEntryOBJECT-TYPE
atmVclVciOBJECT-TYPE
atmVclVpiOBJECT-TYPE
atmVpCrossConnectEntryOBJECT-TYPE
atmVpCrossConnectHighIfIndexOBJECT-TYPE
atmVpCrossConnectHighVpiOBJECT-TYPE
atmVpCrossConnectIndexOBJECT-TYPE
atmVpCrossConnectLowIfIndexOBJECT-TYPE
atmVpCrossConnectLowVpiOBJECT-TYPE
atmVplEntryOBJECT-TYPE
atmVplVpiOBJECT-TYPE

From ENTITY-MIB

entPhysicalClassOBJECT-TYPE
entPhysicalContainedInOBJECT-TYPE
entPhysicalIndexOBJECT-TYPE
entPhysicalParentRelPosOBJECT-TYPE

From HOST-RESOURCES-MIB

hrSWInstalledIndexOBJECT-TYPE
hrSWInstalledNameOBJECT-TYPE

From IF-MIB

OwnerString
ifIndexOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

AutonomousType
DateAndTime
DisplayString
RowPointer
RowStatus
TEXTUAL-CONVENTION
TestAndIncr
TimeInterval
TimeStamp
TruthValue
OIDs

RFC description

ATM Forum M4 interface MIB for management of ATM VPs/VCs and cross-connects.

Start monitoring ATM switches and network elements (M4 interface) 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 ATM-FORUM-M4-MIB