AIXIRB-MIB

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Organization: Applied Innovation Inc.

Last Updated: 2000-06-20

Category: Net-SNMP and Linux

Description: IBM AIX SNMP MIB for Integrated Routing and Bridging (IRB) interface statistics and configuration on AIX hosts.

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 AIXIRB-MIB?

This MIB module is IBM's AIX extension MIB covering Integrated Routing and Bridging (IRB), TCP tuning options, and legacy WAN link (X.25/BX.25) statistics on AIX hosts. It exposes TCP-related configuration such as window size and send-ahead settings, X.25 call/link state objects, and interface-level statistics including CPU usage stats and 10BaseT link duplex/status. This is a hardware and OS/network-software health MIB: administrators can track aiXirbCpuStatsCurrent and aiXirbCpuStatsMax to monitor CPU load on the AIX host, check aiXirbBx25LinkUp for legacy WAN link availability, and confirm 10BaseT Ethernet interface duplex settings and status. It is IBM's proprietary AIX enterprise MIB extension, built as a sibling to AIX1-MIB, and complements standard IF-MIB interface counters. It is typically deployed on IBM AIX Unix servers that use IRB, legacy X.25 links, or 10BaseT Ethernet interfaces, in enterprise data center environments. Engineers can download the AIXIRB-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in AIXIRB-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

Applied Innovation XIRB remote access/terminal server platform

Monitoring Examples

An admin polling aiXirbCpuStatsCurrent against aiXirbCpuStatsMax and aiXirbCpuStatsReset would track current CPU load relative to its historical peak on the AIX host, while aiXirbBx25LinkUp indicates whether a legacy X.25 WAN link is up. A duplex mismatch surfaced through aiXirb10BaseTDuplex alongside degraded throughput on aiXirbPpc10BaseT would point to an Ethernet auto-negotiation problem on that interface.

What Can Be Monitored

CPU usage current/max/reset stats
X.25 (BX.25) link up/down state
TCP window size and send-ahead settings
10BaseT interface duplex and status

Imported Objects

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE
enterprises

OIDs

OID symbolic	OID numeric	Type	Access	Description
aii	1.3.6.1.4.1.539
aiSystemOID	1.3.6.1.4.1.539.2
aiSLC2	1.3.6.1.4.1.539.16
aiXirb	1.3.6.1.4.1.539.16.5			SLC MIB for misc. TCP options and passive/extended link settings
aiXirbSystem	1.3.6.1.4.1.539.16.5.1
aiXirbTcp	1.3.6.1.4.1.539.16.5.2
INT aiXirbTcpWindowSize	1.3.6.1.4.1.539.16.5.2.1	INTEGER	read-write	Default window size for TCP connections. Current connections will maintain their current window sizes, but new connections will use the updated window size.
INT aiXirbTcpSendAhead	1.3.6.1.4.1.539.16.5.2.2	INTEGER	read-write	Indicates whether or not TCP connections wait for data acknowledgment before sending more data (if disabled (1)), or send the maximum TCP window size before requiring data to be acknowledged (if enabled (2)).
aiXirbX25	1.3.6.1.4.1.539.16.5.3
INT aiXirbBx25CallDown	1.3.6.1.4.1.539.16.5.3.1	INTEGER	read-write	If set to off(2), a passive link will stay up after all calls are disconnected. If set to on(1), a passive link will drop and go into DMLOCK (see aiXirbBx25DMlock below) when all the incomming calls are terminated. This object is meaningful only when aiLinkX25LinkMode is set to passive(2) on a given link
INT aiXirbBx25DMlock	1.3.6.1.4.1.539.16.5.3.2	INTEGER	read-write	The number of seconds to wait for after a link has gone inactive before allowing an outgoing call to attemp to bring up the link. Any outgoing call attempts will be rejected until the DMLOCK timer expires and the passive link returns to the standby mode. This object is meaningful only when aiLinkX25LinkMode is set to passive(2) on a given link
INT aiXirbBx25LinkUp	1.3.6.1.4.1.539.16.5.3.3	INTEGER	read-write	The number of seconds to wait for a passive link to become active. This object is meaningful only when aiLinkX25LinkMode is set to passive(2) on a given link
aiXirbCpuStats	1.3.6.1.4.1.539.16.5.4
INT aiXirbCpuStatsCurrent	1.3.6.1.4.1.539.16.5.4.1	INTEGER	read-only	This indicates the average of percentage CPU utilization during last 60 seconds
INT aiXirbCpuStatsMax	1.3.6.1.4.1.539.16.5.4.2	INTEGER	read-only	This shows the maximum percentage CPU utilization during last 24 hours. This value is calculated from the average CPU utilization information which is found every 60 seconds.
INT aiXirbCpuStatsReset	1.3.6.1.4.1.539.16.5.4.3	INTEGER	read-write	This resets the CPU utilization statistics
aiXirbEthernet	1.3.6.1.4.1.539.16.5.5
INT aiXirbPpc10BaseT	1.3.6.1.4.1.539.16.5.5.1	INTEGER	read-write	Determines whether the front panel 10 BaseT interface is enabled or not on - to enable the 10 BaseT interface off - to disable the 10 BaseT interface
INT aiXirb10BaseTDuplex	1.3.6.1.4.1.539.16.5.5.2	INTEGER	read-write	For AIwan only. Setting this to full(1) puts the AIwan Ethernet interface into Full Duplex mode (sends and receives simultaneously). Setting this to half(2) puts the AIwan Ethernet interface into Half Duplex mode (sends OR receives, but not simultaneously -- this means that collisions are possible). In general, half duplex works fine for switches AND hubs, whereas full duplex mode should only be used with switches or other interfaces that are full duplex capable.

RFC description

Applied Innovation XIRB TCP and X.25 link configuration and management.

Start monitoring Applied Innovation XIRB remote access/terminal server (legacy) 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 AIXIRB-MIB

What Is AIXIRB-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description