APPN-TRAP-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › APPN-TRAP-MIB

Organization: IETF SNA NAU MIB WG / AIW APPN MIBs SIG

Last Updated: 1998-08-31

Category: SNA and Legacy Protocols

Description: Defines SNMP notifications for APPN and DLUR network devices, reporting status changes such as operational state changes and CP-CP session state changes.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring APPN-TRAP-MIB with a free 30-day trial of IPNetwork Monitor.

What Is APPN-TRAP-MIB?

APPN-TRAP-MIB is the standard MIB from the IETF SNA NAU MIB Working Group / AIW APPN MIBs SIG defining notifications for network devices with APPN (Advanced Peer-to-Peer Networking) capabilities, presupposing support for the APPN MIB and, for DLUR-related notifications, the DLUR MIB. Its notifications cover ISR accounting-data events, local-TG operational-state/CP-CP-session changes, port and link-station operational-state changes, and DLUR-DLUS state changes, alongside a trap-control object and table-change counters for local-TG/port/link-station/DLUR-DLUS tables. As a configuration/notification MIB it lets an administrator get alerted on APPN link-station or DLUR-DLUS session state changes. It is deployed on network devices implementing IETF APPN (RFC 2455). Engineers implementing or auditing this functionality typically reference the APPN-TRAP-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in APPN-TRAP-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

  • Network devices implementing IETF APPN (RFC 2455)

Monitoring Examples

An administrator receives a dlurDlusStateChangeTrap to confirm an APPN Dependent LU Requester lost its session with the Dependent LU Server on a compliant device.

What Can Be Monitored

  • APPN link-station and DLUR-DLUS state-change notifications
Imported Objects

From APPN-DLUR-MIB

dlurDlusSessnStatusOBJECT-TYPE

From APPN-MIB

appnCompliancesOBJECT-IDENTITY
appnGroupsOBJECT-IDENTITY
appnIsInP2SFmdBytesOBJECT-TYPE
appnIsInP2SFmdPiusOBJECT-TYPE
appnIsInP2SNonFmdBytesOBJECT-TYPE
appnIsInP2SNonFmdPiusOBJECT-TYPE
appnIsInS2PFmdBytesOBJECT-TYPE
appnIsInS2PFmdPiusOBJECT-TYPE
appnIsInS2PNonFmdBytesOBJECT-TYPE
appnIsInS2PNonFmdPiusOBJECT-TYPE
appnIsInSessUpTimeOBJECT-TYPE
appnLocalTgCpCpSessionOBJECT-TYPE
appnLocalTgOperationalOBJECT-TYPE
appnLsOperStateOBJECT-TYPE
appnMIBMODULE-IDENTITY
appnObjectsOBJECT-IDENTITY
appnPortOperStateOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using appnLocalTgTableChanges OID:

Select a network device implementing IETF APPN (RFC 2455) 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 appnLocalTgTableChanges into the Find box to locate it in the OID tree, then select it and click OK. It reports a count of the number of times a row in the appnLocalTgTable has changed status since the APPN node was last reinitialized. 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

RFC description

Defined by RFC 2456, this MIB provides trap definitions for Advanced Peer-to-Peer Network (APPN) and DLUR (Dependent LU Requester) devices. Enables notification of topology changes and session state transitions.

Start monitoring Network devices implementing IETF APPN (RFC 2455) 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 APPN-TRAP-MIB