APPN-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsAPPN-MIB

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

Last Updated: 1998-07-15

Category: Routing Protocols, SNA and Legacy Protocols

Description: Defines managed objects for monitoring and controlling network devices with SNA Advanced Peer-to-Peer Networking (APPN) capabilities, including topology, sessions, and routing.

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

What Is APPN-MIB?

APPN-MIB is a standards-based IETF module (RFC 2455-family) for managing network devices that implement IBM's SNA Advanced Peer-to-Peer Networking (APPN) architecture, used in legacy mainframe and midrange SNA networking environments. It exposes node identity and topology data, session pacing and routing configuration, and performance counters for high-performance routing (HPR) route setups and rejections. Notably it includes appnNodeUpTime for device uptime tracking and counters such as appnNodeHprIntRteSetups/Rejects that reveal whether APPN route establishment is succeeding or failing, making it useful for monitoring both the operational health and configuration state of APPN-capable network nodes. As a vendor-neutral IETF MIB it is designed to be used alongside standard SNMP frameworks and does not depend on a specific vendor's proprietary extensions, though it is most relevant to devices that also implement SNA/APPN stacks. It is deployed in legacy enterprise networks still running IBM SNA/APPN traffic, typically on routers or gateways bridging SNA and IP environments. Engineers implementing or auditing this functionality typically reference the APPN-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in APPN-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
  • SNA/APPN-capable router or network node

Monitoring Examples

An operator would poll appnNodeUpTime and appnNodeCpName/appnNodeId to confirm node identity and stability, then check appnNodeHprIntRteSetups against appnNodeHprIntRteRejects (and the org-route equivalents) to see whether HPR route establishment attempts are succeeding. Objects like appnNodeMaxSessPerRtpConn and appnNodeAdaptiveBindPacing reveal session capacity and flow-control tuning under appnNn/appnNnTopo. A rising ratio of appnNodeHprIntRteRejects relative to setups would indicate topology or resource problems preventing APPN sessions from establishing.

What Can Be Monitored

  • node uptime
  • APPN node identity/type
  • HPR route setup successes and rejections
  • session pacing/capacity configuration
  • network topology (node/topology database)
Imported Objects

From IANAifType-MIB

IANAifType

From SNA-NAU-MIB

snanauMIBMODULE-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DateAndTime
DisplayString
RowPointer
TEXTUAL-CONVENTION
TimeStamp
TruthValue
VariablePointer
OIDs

RFC description

Manages Advanced Peer-to-Peer Networking capabilities for SNA devices, branch networks, and multi-link transmission groups.

Start monitoring SNA/APPN-capable router or network node 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-MIB