IBM-LES-LECS-MIB

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Category: ATM, Vendor: IBM

Description: IBM MIB for the LAN Emulation Configuration Server (LECS) managing ATM LANE service configuration and client registration.

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What Is IBM-LES-LECS-MIB?

IBM-LES-LECS-MIB covers the LAN Emulation Configuration Server (LECS) component in ATM LANE deployments on IBM ATM networking equipment, complementing the related LES/BUS MIB. It exposes a lesLecsConfTable describing each LECS interface's operational and administrative status, ATM device number and line speed, ESI configuration, and default VCC (virtual channel connection) parameters like PCR (peak cell rate) and SCR (sustainable cell rate). Its monitoring focus is on the operational health and configuration correctness of the LECS software service: lesLecsOperStatus and lesLecsAdminStatus let an operator confirm the configuration server is actually up and administratively enabled, since a down LECS prevents LANE clients from ever locating their LES, effectively breaking ATM-emulated LAN bootstrapping fleet-wide. lesLecsAtmDevLineSpeed and the VCC PCR/SCR settings help confirm the interface's ATM link capacity and traffic-shaping parameters are as expected. This MIB depends on the ATM Forum LANE specification and pairs directly with IBM-LES-BUS-MIB, and it is deployed on IBM ATM switches/routers acting as the LECS in legacy ATM LANE networks. Engineers can download the IBM-LES-LECS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in IBM-LES-LECS-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

IBM ATM switch/router with LAN Emulation Configuration Server (LECS) support

Monitoring Examples

An admin would poll lesLecsConfTable/lesLecsConfEntry, keyed by lesLecsAtmDevNum, to check lesLecsOperStatus versus lesLecsAdminStatus, immediately catching a LECS interface that is administratively enabled but operationally down, which would prevent new LANE clients from joining any emulated LAN. lesLecsAtmDevLineSpeed would be checked against expected link capacity to rule out a line-speed mismatch, while configDirectPcr and configDirectScr would be reviewed to confirm default VCC traffic-shaping parameters match the network's ATM bandwidth plan. lesLecsUseBurnedInEsi versus lesLecsConfiguredEsi confirms whether the LECS is using its factory ESI or an administrator-assigned one.

What Can Be Monitored

LECS operational/administrative status
ATM device line speed
ESI configuration
default VCC peak/sustainable cell rate settings

Imported Objects

From NWAYSMSS-MIB

AtmPrivateAddrEsi
AtmSelector
AtmVccTrafficType
Bandwidth
mssServerLanE	OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From SNMPv2-SMI

Integer32

From SNMPv2-TC

RowStatus
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
ibmLesLecsMIB	1.3.6.1.4.1.2.6.118.1.2.1.2
ibmLesLecsConfGroup	1.3.6.1.4.1.2.6.118.1.2.1.2.1
lesLecsConfTable	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1		not-accessible	This table contains the the configuration for LES-LECS interfaces.
lesLecsConfEntry	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1		not-accessible	Each entry in this table contains configuration parameters for the LES-LECS operation for an individual ATM physical interface. Object lesLecsRowStatus is required during row creation and deletion.
INT lesLecsOperStatus	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.1	INTEGER	read-only	The operational state of LES/LECS on this entry. Other defines the transition states between up and down.
INT lesLecsAdminStatus	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.2	INTEGER	read-write	The administrative state of the LES/LECS on this entry.
INT lesLecsAtmDevNum	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.3	INTEGER	read-only	Identifies ATM device to be used to interface with LECS.
I32 lesLecsAtmDevLineSpeed	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.4	Integer32	read-only	Line Speed of LECS ATM Device. This should not exposed to the user.
T/F lesLecsUseBurnedInEsi	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.5	TruthValue	read-write	Specifies whether a MAC Address burned into the ATM device should be used as the End System Identifier component of local ATM Address used when calling LECS.
ATM lesLecsConfiguredEsi	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.6	AtmPrivateAddrEsi	read-write	Locally Administered End System Identifier that is to be used as the ESI component of the local ATM Address used when calling the LECS.
ATM lesLecsConfiguredSelector	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.7	AtmSelector	read-write	Specifies value to be used as Selector field component of local ATM Address used when calling the LECS.
ATM configDirectVccType	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.8	AtmVccTrafficType	read-write	Specifies type of traffic characteristics to be associated with Configuration Direct VCC to LECS. Bandwidth is not reserved for best effort traffic.
BAN configDirectPcr	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.9	Bandwidth	read-write	Specifies the Peak Cell Rate (PCR) Traffic Parameter for the Configuration Direct VCC to the LECS. The specified rate is used for both forward and backward directions. When a best effort connection is rejected due to the PCR, the call may be automatically retried with a lower PCR. Retries are performed under the following conditions: if (rejected PCR > 100 Mbps) retry with PCR = 100 Mbps else if (25 < rejected PCR <= 100 Mbps) retry with PCR = 25 Mbps
BAN configDirectScr	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.10	Bandwidth	read-write	Specifies the Sustained Cell Rate (SCR) Traffic Parameter for the Configuration Direct VCC to the LECS. The specified rate is used for both forward and backward directions. If the SCR equals the PCR specified in LECS-INTF-7, the call is signalled with PCR only. If SCR is signalled, the Maximum Burst Size traffic parameter is set to accomodate the maximum control frame size of 1516 bytes.
ROW lesLecsConfRowStatus	1.3.6.1.4.1.2.6.118.1.2.1.2.1.1.1.11	RowStatus	read-write	This object is used to create or delete entries in the lesLecsConfTable.
ibmLesLecsMIBConformance	1.3.6.1.4.1.2.6.118.1.2.1.2.2
ibmLesLecsMIBGroups	1.3.6.1.4.1.2.6.118.1.2.1.2.2.1
ibmLesLecsCConfGroup	1.3.6.1.4.1.2.6.118.1.2.1.2.2.1.1
ibmLesLecsMIBCompliances	1.3.6.1.4.1.2.6.118.1.2.1.2.2.2
ibmLesLecsMIBCompliance	1.3.6.1.4.1.2.6.118.1.2.1.2.2.2.1

RFC description

IBM proprietary extensions for managing LAN Emulation Client-Server (LES/LECS) ATM interfaces.

Start monitoring IBM ATM switch/router with LAN Emulation Configuration Server (LECS) 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 IBM-LES-LECS-MIB

What Is IBM-LES-LECS-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description