CTRON-LINE-STATISTICS-MIB

All MIBs › CTRON-LINE-STATISTICS-MIB

Category: Network Interfaces, Vendor: Cabletron/Enterasys

Description: Monitors Cabletron WAN line statistics including bit errors, frame errors, and line utilization counters.

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 CTRON-LINE-STATISTICS-MIB?

CTRON-LINE-STATISTICS-MIB is a Cabletron Systems enterprise MIB that monitors WAN line-level statistics on Cabletron networking equipment, specifically for T1/E1-style DS1 (Dsx1) lines. It exposes a ctDsx1LineStatisticsTable of per-line error and alarm counters, including layer-1 up/down transition counts and specific line-fault indicators such as Loss of Signal (LOS), Loss of Frame (LOF), Remote Alarm Indication (RAI), and Alarm Indication Signal (AIS), plus aggregate "All" variants of these counters. Its purpose is squarely hardware-status/fault monitoring for WAN circuits: rising LOS, LOF, or AIS counts on a given line directly indicate a failing physical WAN link, cabling problem, or upstream carrier issue, functioning as an early-warning system for circuit degradation. It parallels concepts found in the standard DS1/E1 MIB family but implements them as a Cabletron-specific statistics extension. It was typically deployed on Cabletron WAN routers/switches with T1/E1 line cards in enterprise or carrier-edge networks. Engineers can download the CTRON-LINE-STATISTICS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CTRON-LINE-STATISTICS-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

Cabletron Systems WAN router/switch with T1/E1 (DS1) line cards

Monitoring Examples

An administrator would poll ctDsx1LineStatisticsTable, indexed by lsLineIndex, and watch lsLayer1LOS, lsLayer1LOF, lsLayer1RAI, and lsLayer1AIS counters alongside lsLayer1Up/lsLayer1Down transition counts for each DS1 line. A sudden jump in lsLayer1LOSAll or lsLayer1LOFAll across multiple lines would point to a carrier-side outage or failed line card, while an isolated line's rising AIS count would suggest a fault further upstream on that specific circuit.

What Can Be Monitored

line up/down transitions
loss of signal (LOS) count
loss of frame (LOF) count
remote alarm indication (RAI) count
alarm indication signal (AIS) count

Imported Objects

From CTRON-OIDS

cabletron

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
ctSSA	1.3.6.1.4.1.52.4497
ctDsx1LineStatisticsTable	1.3.6.1.4.1.52.4497.21		not-accessible	A list of statistics gathered at Layer 1 for the installed WAN ports.
ctDsx1LineStatisticsEntry	1.3.6.1.4.1.52.4497.21.1		not-accessible	A list of statistics gathered at Layer 1 for a given WAN port. The statistics include counts for qualified alarms and total alarms (qualified alarms and unqualified alarms). A qualified alarm is an alarm whose presence has been detected for a finite amount of time (called its integration period). An unqualified alarm is an alarm whose presence has not been detected for the entire integration period.
INT lsLineIndex	1.3.6.1.4.1.52.4497.21.1.1	INTEGER	read-only	The physical line index for this port.
INT lsLayer1Up	1.3.6.1.4.1.52.4497.21.1.2	INTEGER	read-only	The number of times Layer 1 has been brought up (by a higher level software entity or administrator) or has come up due to the disintegration of an alarm.
INT lsLayer1Down	1.3.6.1.4.1.52.4497.21.1.3	INTEGER	read-only	The number of times Layer 1 has been taken down (by a higher level software entity or administrator) or has gone down due to the integration of an alarm.
INT lsLayer1LOS	1.3.6.1.4.1.52.4497.21.1.4	INTEGER	read-only	The number of times Layer 1 has qualified a Loss of Signal.
INT lsLayer1LOF	1.3.6.1.4.1.52.4497.21.1.5	INTEGER	read-only	The number of times Layer 1 has qualified a Loss of Frame.
INT lsLayer1RAI	1.3.6.1.4.1.52.4497.21.1.6	INTEGER	read-only	The number of times Layer 1 has qualified a Remote Alarm Indication. RAI is also known as a Yellow alarm.
INT lsLayer1AIS	1.3.6.1.4.1.52.4497.21.1.7	INTEGER	read-only	The number of times Layer 1 has qualified an Alarm Indication Signal. AIS is also known as a Blue alarm.
INT lsLayer1LOSAll	1.3.6.1.4.1.52.4497.21.1.8	INTEGER	read-only	The number of times Layer 1 has detected a Loss of Signal. This includes both qualified and unqualified Losses of Signal.
INT lsLayer1LOFAll	1.3.6.1.4.1.52.4497.21.1.9	INTEGER	read-only	The number of times Layer 1 has detected a Loss of Frame. This includes both qualified and unqualified Losses of Frame.
INT lsLayer1RAIAll	1.3.6.1.4.1.52.4497.21.1.10	INTEGER	read-only	The number of times Layer 1 has detected a Remote Alarm Indication. This includes both qualified and unqualified Remote Alarm Indications.
INT lsLayer1AISAll	1.3.6.1.4.1.52.4497.21.1.11	INTEGER	read-only	The number of times Layer 1 has detected an Alarm Indication Signal. This includes both qualified and unqualified Alarm Indication Signals.
INT lsLayer1Interrupts	1.3.6.1.4.1.52.4497.21.1.12	INTEGER	read-only	The number of interrupts seen at Layer 1.
INT lsLayer1ClearStats	1.3.6.1.4.1.52.4497.21.1.13	INTEGER	read-write	When written with any value, all statistics associated with this LineIndex will be cleared.

RFC description

Cabletron T1/E1 line statistics MIB. Collects Layer 1 WAN port statistics including qualified and unqualified alarm counts.

Start monitoring Cabletron WAN router/switch (T1/E1 line statistics) 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 CTRON-LINE-STATISTICS-MIB

What Is CTRON-LINE-STATISTICS-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description