TIARA-PPP-MIB

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Organization: Tiara Networks Inc.

Last Updated: 2000-02-01

Category: PPP and WAN Protocols

Description: Manages Tiara Networks WAN router PPP link configuration, authentication, and statistics.

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What Is TIARA-PPP-MIB?

This MIB module manages PPP and Multilink PPP (MLPPP) links on Tiara Networks WAN routers, covering both link configuration and traffic statistics. It exposes configuration parameters such as MTU/MRU sizes, MLPPP receive-unit size, sequence numbering, segment thresholds, and differential-delay tolerance, alongside statistics counters tracking bytes received since the last boot or counter clear. It is used to monitor the software/protocol status of PPP bundles, verifying negotiated link parameters and checking traffic counters for evidence of a stalled or flapping link, rather than any physical hardware sensor. It builds conceptually on the IETF PPP MIB framework but implements Tiara-specific MLPPP bundle extensions. It is deployed on Tiara Networks routers terminating multilink PPP bundles over leased-line or T1/E1 WAN circuits for bandwidth aggregation, where TIARA-PPP-MIB SNMP monitoring helps confirm negotiated link parameters and traffic levels stay within expected bounds.

IPNetwork Monitor allows you to monitor SNMP objects defined in TIARA-PPP-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

Tiara Networks WAN router

Monitoring Examples

An engineer would compare pppMtu/pppMru against the peer's negotiated values in the pppTable when troubleshooting fragmentation issues on a PPP link, and check mlpppMrru, mlpppSeq, and mlpppDiffDelay to confirm an MLPPP bundle's member links are within acceptable differential-delay tolerance for proper reassembly. mlpppSegmentThreshold and mlpppDiscriminator would be reviewed when diagnosing bundle formation problems between two multilink-capable peers. pppStatsBytesRxLastBootOrClear in the pppStatsTable lets an operator baseline traffic volume on a link and detect an unexpectedly silent or saturated PPP session.

What Can Be Monitored

PPP MTU/MRU negotiation
MLPPP bundle parameters (MRRU, differential delay)
PPP link byte counters
MLPPP segment threshold/discriminator

Imported Objects

From RFC1213-MIB

DisplayString

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE

From TIARA-BUNDLE-MIB

bundleId

OBJECT-TYPE

From TIARA-NETWORKS-SMI

tiaraMgmt

OBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using pppStatsBytesRxLastBootOrClear OID:

Select a Tiara Networks WAN router 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 pppStatsBytesRxLastBootOrClear 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. This counter has the number of bytes received on this bundle since it was last booted or cleared. 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
tiaraPppMib	1.3.6.1.4.1.3174.2.14			The MIB module defines the managed objects for Tiara enterrpise PPP/MLPPP.
pppTable	1.3.6.1.4.1.3174.2.14.1		not-accessible	This table contains configurable parameters related to PPP/MLPPP bundle.
pppTableEntry	1.3.6.1.4.1.3174.2.14.1.1		not-accessible	An entry in the PPP Table which contains the configuration for a particular bundle instance identified by the bundleId.
STR pppMtu	1.3.6.1.4.1.3174.2.14.1.1.1	DisplayString	read-write	Minimum, default and maximum packet sizes to be sent separated by hyphens.
STR pppMru	1.3.6.1.4.1.3174.2.14.1.1.2	DisplayString	read-write	Minimum, default and maximum packet sizes to be received separated by hyphens.
STR mlpppMrru	1.3.6.1.4.1.3174.2.14.1.1.3	DisplayString	read-write	Maximum received reconstructed unit - maximum number of octets in the information fields of reassembled packets. This variable can be set only if the bundle is multi-link.
INT mlpppSeq	1.3.6.1.4.1.3174.2.14.1.1.4	INTEGER	read-write	MLPPP sequence number length (short = 12 bits ; long = 24 bits. This variable can be set only if the bundle is multi-link.
I32 mlpppSegmentThreshold	1.3.6.1.4.1.3174.2.14.1.1.5	Integer32	read-write	Segmentation threshold - number of octets a packet must exceed before being fragmented for transmission. This variable can be set only if the bundle is multi-link.
I32 mlpppDiffDelay	1.3.6.1.4.1.3174.2.14.1.1.6	Integer32	read-write	Tolerance, in milliseconds, to differential delay between links. If The differential delay exceeds this limit, the corresponding link will be removed from the bundle. This variable can be set only if the bundle is multi-link.
IP mlpppDiscriminator	1.3.6.1.4.1.3174.2.14.1.1.7	IpAddress	read-write	IP address of MLPPP discriminator. This variable can be set only if the bundle is multi-link.
pppStatsTable	1.3.6.1.4.1.3174.2.14.2		not-accessible	This table contains the statistics for PPP/MLPPP bundles.
pppStatsTableEntry	1.3.6.1.4.1.3174.2.14.2.1		not-accessible	An entry in the PPP Statistics Table which contains the statistics for a particular bundle instance identified by the bundleId.
C32 pppStatsBytesRxLastBootOrClearEx	1.3.6.1.4.1.3174.2.14.2.1.1	Counter32	read-only	This counter has the number of bytes received on this bundle since it was last booted or cleared.
C32 pppStatsBytesTxLastBootOrClear	1.3.6.1.4.1.3174.2.14.2.1.2	Counter32	read-only	This counter has the number of bytes transmitted on this bundle since it was last booted or cleared.
C32 pppStatsPktsRxLastBootOrClear	1.3.6.1.4.1.3174.2.14.2.1.3	Counter32	read-only	This counter has the number of packets received on this bundle since it was last booted or cleared.
C32 pppStatsPktsTxLastBootOrClear	1.3.6.1.4.1.3174.2.14.2.1.4	Counter32	read-only	This counter has the number of packets transmitted on this bundle since it was last booted or cleared.
C32 pppStatsErrPktsRxLastBootOrClear	1.3.6.1.4.1.3174.2.14.2.1.5	Counter32	read-only	This counter has the number of error packets received on this bundle since it was last booted or cleared.
C32 pppStatsUpDownStatesLastBootOrClear	1.3.6.1.4.1.3174.2.14.2.1.6	Counter32	read-only	This variable has the count on the number of times this PPP/MLPPP bundle have made the 'Down' to 'Up' and 'Up' to 'Down' transitions since it was last booted or cleared.
C32 pppStatsBytesRxLastFiveMins	1.3.6.1.4.1.3174.2.14.2.1.7	Counter32	read-only	This counter has the number of bytes received on this bundle in the last 5 minutes.
C32 pppStatsBytesTxLastFiveMins	1.3.6.1.4.1.3174.2.14.2.1.8	Counter32	read-only	This counter has the number of bytes transmitted on this bundle in the last 5 minutes.
C32 pppStatsPktsRxLastFiveMins	1.3.6.1.4.1.3174.2.14.2.1.9	Counter32	read-only	This counter has the number of packets received on this bundle in the last 5 minutes.
C32 pppStatsPktsTxLastFiveMins	1.3.6.1.4.1.3174.2.14.2.1.10	Counter32	read-only	This counter has the number of packets transmitted on this bundle in the last 5 minutes.
C32 pppStatsErrPktsRxLastFiveMins	1.3.6.1.4.1.3174.2.14.2.1.11	Counter32	read-only	This counter has the number of error packets received on this bundle in the last 5 minutes.
C32 pppStatsUpDownStatesLastFiveMins	1.3.6.1.4.1.3174.2.14.2.1.12	Counter32	read-only	This variable has the count on the number of times this PPP/MLPPP bundle have made the 'Down' to 'Up' and 'Up' to 'Down' transitions in the last 5 minutes.

RFC description

Tiara Networks PPP/MLPPP MIB managing point-to-point link configuration and multi-link protocol parameters.

Start monitoring Tiara Networks WAN routers 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 TIARA-PPP-MIB