Fore-PLCP-MIB

All MIBs › Fore-PLCP-MIB

Organization: FORE

Last Updated: 1999-11-05

Category: ATM, Vendor: Fore Systems (ATM)

Description: Fore Systems PLCP (Physical Layer Convergence Procedure) MIB providing DS3 PLCP framing statistics and performance monitoring objects.

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 Fore-PLCP-MIB?

Fore-PLCP-MIB is a FORE Systems (ATM equipment vendor, later Marconi/Ericsson) proprietary MIB reporting PLCP (Physical Layer Convergence Protocol) status, the framing layer that encapsulates ATM cells for transmission over a DS3/E3 link. Its configuration table records frame format, while total, current, and 15-minute-interval tables each report framing-error (FERR) count, BIP-8 error count, and far-end-block-error (FEBE) count, with the current/interval tables adding loss-of-frame seconds, errored/severely-errored seconds, and unavailable seconds. As a performance MIB it lets an administrator watch PLCP framing-error trends across the current and recent 15-minute intervals to diagnose a degrading DS3/E3 ATM link. It is deployed on FORE Systems ATM equipment with DS3/E3 PLCP-framed interfaces. Engineers can download the Fore-PLCP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Fore-PLCP-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

FORE Systems ATM equipment (DS3/E3 PLCP-framed interfaces)

Monitoring Examples

An administrator compares forePlcpCurrentFerrCount against forePlcpIntervalFerrCount across recent intervals to determine whether a DS3 ATM link's framing errors are a one-off event or an ongoing trend.

What Can Be Monitored

PLCP framing-error and unavailable-second counters

Imported Objects

From Fore-Common-MIB

asx	OBJECT-IDENTITY

From Fore-TrapLog-MIB

trapLogIndex

OBJECT-TYPE

From IF-MIB

ifIndex	OBJECT-TYPE
ifName	OBJECT-TYPE

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using forePlcpTotalFerrCount OID:

Select an FORE Systems ATM equipment (DS3/E3 PLCP-framed interfaces) 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 forePlcpTotalFerrCount 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. The number of framing errors detected since the interface was reset. 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 between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
forePlcpMib	1.3.6.1.4.1.326.2.2.1.1.13			This mib implements management information for the PLCP convergence layer in an atm interface. Typically PLCP framing is used to encapsulate ATM cells for transmission over a DS3/E3 link.
NTF forePlcpYellowDetected	1.3.6.1.4.1.326.2.2.1.1.13.0.1			This trap indicates that the specified DS3 port has detected incoming PLCP Yellow Alarm.
NTF forePlcpYellowCleared	1.3.6.1.4.1.326.2.2.1.1.13.0.2			This trap indicates that the specified DS3 port has detected clearance of incoming PLCP Yellow Alarm.
NTF forePlcpLOFDetected	1.3.6.1.4.1.326.2.2.1.1.13.0.3			This trap indicates that the specified DS3 port has detected incoming PLCP LOF Alarm.
NTF forePlcpLOFCleared	1.3.6.1.4.1.326.2.2.1.1.13.0.4			This trap indicates that the specified DS3 port has detected clearance of incoming PLCP LOF Alarm.
forePlcpConfigTable	1.3.6.1.4.1.326.2.2.1.1.13.1		not-accessible	A table of PLCP convergence layer information configuration parameters.
forePlcpConfigEntry	1.3.6.1.4.1.326.2.2.1.1.13.1.1		not-accessible	A table entry containing PLCP convergence layer configuration information for each atm interface using PLCP.
INT forePlcpConfigFrameFormat	1.3.6.1.4.1.326.2.2.1.1.13.1.1.1	INTEGER	read-write	This variable controls the PLCP framing format used to carry ATM cells over this interface. Note that some interfaces may not support all formats and that this variable may be read-only for some interfaces.
forePlcpTotalTable	1.3.6.1.4.1.326.2.2.1.1.13.2		not-accessible	A table of PLCP convergence layer information and parameters.
forePlcpTotalEntry	1.3.6.1.4.1.326.2.2.1.1.13.2.1		not-accessible	A table entry containing PLCP convergence layer information for each atm interface using PLCP.
C32 forePlcpTotalFerrCountEx	1.3.6.1.4.1.326.2.2.1.1.13.2.1.1	Counter32	read-only	The number of framing errors detected since the interface was reset. A framing error is determined by errors in the A1 and A2 bytes of the PLCP frame.
C32 forePlcpTotalLofSeconds	1.3.6.1.4.1.326.2.2.1.1.13.2.1.2	Counter32	read-only	The number of seconds an out of frame condition persisted.
C32 forePlcpTotalBip8Count	1.3.6.1.4.1.326.2.2.1.1.13.2.1.3	Counter32	read-only	The number of Bit Interleaved Parity errors detected since the interface was reset. A BIP error is determined by using the parity carried in the B1 byte of the PLCP frame.
C32 forePlcpTotalFebeCount	1.3.6.1.4.1.326.2.2.1.1.13.2.1.4	Counter32	read-only	The number of Far End BIP Errors detected. This information is determined by examination of the G1 byte in the PLCP frame.
C32 forePlcpTotalYellowAlarmSeconds	1.3.6.1.4.1.326.2.2.1.1.13.2.1.5	Counter32	read-only	The number of seconds that a far end yellow alarm condition has persisted. This information is determined by examiniation of the G1 byte of the PLCP frame.
forePlcpCurrentTable	1.3.6.1.4.1.326.2.2.1.1.13.3		not-accessible	A table of PLCP convergence layer information and parameters.
forePlcpCurrentEntry	1.3.6.1.4.1.326.2.2.1.1.13.3.1		not-accessible	A table entry containing PLCP convergence layer current statistics for each atm interface using PLCP.
C32 forePlcpCurrentFerrCount	1.3.6.1.4.1.326.2.2.1.1.13.3.1.1	Counter32	read-only	The number of framing errors detected in current interval. A framing error is determined by errors in the A1 and A2 bytes of the PLCP frame.
C32 forePlcpCurrentBip8Count	1.3.6.1.4.1.326.2.2.1.1.13.3.1.2	Counter32	read-only	The number of Bit Interleaved Parity errors detected in the current interval. A BIP error is determined by using the parity carried in the B1 byte of the PLCP frame.
C32 forePlcpCurrentFebeCount	1.3.6.1.4.1.326.2.2.1.1.13.3.1.3	Counter32	read-only	The number of Far End BIP Errors detected in the current interval. This information is determined by examination of the G1 byte in the PLCP frame.
C32 forePlcpCurrentErrSeconds	1.3.6.1.4.1.326.2.2.1.1.13.3.1.4	Counter32	read-only	Number of Errored Seconds in current interval
C32 forePlcpCurrentSevErrSeconds	1.3.6.1.4.1.326.2.2.1.1.13.3.1.5	Counter32	read-only	Number of Severely Errored Seconds in current interval
C32 forePlcpCurrentUnavailSeconds	1.3.6.1.4.1.326.2.2.1.1.13.3.1.6	Counter32	read-only	Number of Unavailable Seconds in the current interval
forePlcpIntervalTable	1.3.6.1.4.1.326.2.2.1.1.13.4		not-accessible	Interval table of PLCP convergence layer information and parameters.
forePlcpIntervalEntry	1.3.6.1.4.1.326.2.2.1.1.13.4.1		not-accessible	A table entry containing PLCP convergence layer current statistics for each atm interface using PLCP.
I32 forePlcpInterval	1.3.6.1.4.1.326.2.2.1.1.13.4.1.1	Integer32	read-only	Interval number
C32 forePlcpIntervalFerrCount	1.3.6.1.4.1.326.2.2.1.1.13.4.1.2	Counter32	read-only	The number of framing errors detected in particular interval. A framing error is determined by errors in the A1 and A2 bytes of the PLCP frame.
C32 forePlcpIntervalBip8Count	1.3.6.1.4.1.326.2.2.1.1.13.4.1.3	Counter32	read-only	The number of Bit Interleaved Parity errors detected in the particular interval. A BIP error is determined by using the parity carried in the B1 byte of the PLCP frame.
C32 forePlcpIntervalFebeCount	1.3.6.1.4.1.326.2.2.1.1.13.4.1.4	Counter32	read-only	The number of Far End BIP Errors detected in the particular interval. This information is determined by examination of the G1 byte in the PLCP frame.
C32 forePlcpIntervalErrSeconds	1.3.6.1.4.1.326.2.2.1.1.13.4.1.5	Counter32	read-only	Number of Errored Seconds in particular interval
C32 forePlcpIntervalSevErrSeconds	1.3.6.1.4.1.326.2.2.1.1.13.4.1.6	Counter32	read-only	Number of Severely Errored Seconds in particular interval
C32 forePlcpIntervalUnavailSeconds	1.3.6.1.4.1.326.2.2.1.1.13.4.1.7	Counter32	read-only	Number of Unavailable Seconds in the particular interval

RFC description

Physical Layer Convergence Procedure MIB from Fore Systems for managing the physical layer of ATM and other networking technologies. Provides SNMP management for PLCP-based network interfaces.

Start monitoring FORE Systems ATM equipment (DS3/E3 PLCP-framed interfaces) 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 Fore-PLCP-MIB