ELTEX-FLEX-LINKS-MIB

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Organization: Eltex Ltd.

Last Updated: 2014-10-07

Category: Technology: Bridging, Vendor: Eltex

Description: Eltex Flex Links MIB for managing active/backup port pairs providing link redundancy on Eltex Ethernet switches.

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What Is ELTEX-FLEX-LINKS-MIB?

This Eltex private enterprise MIB manages the Flex Links feature on Eltex Ethernet switches, a Layer 2 link-redundancy mechanism where one interface acts as an automatic backup to another primary interface as an alternative to running Spanning Tree Protocol. It exposes configuration objects pairing a primary and backup interface, extended settings for preemption mode and preemption delay, and a status table reporting the real-time operational state of each Flex Links interface pair, plus a notification for status changes. Its monitoring value centers on link/interface status: administrators can see which interface in a Flex Links pair is currently active versus standby, and receive a trap when that state changes, revealing a primary-link failure and automatic cutover to the backup. It is a standalone feature MIB but conceptually serves as an alternative to standard STP/RSTP MIBs used elsewhere in switch management. It is deployed on Eltex MES switches in networks (often service-provider or enterprise access rings) that want fast Layer 2 failover without the convergence delay of Spanning Tree. Network engineers evaluating or troubleshooting this functionality can download the ELTEX-FLEX-LINKS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ELTEX-FLEX-LINKS-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

Eltex MES Ethernet switch

Monitoring Examples

An admin configures a pair via eltexFlIfConfigTable/eltexFlIfConfigEntry, setting eltexFlIfConfigPrimary and eltexFlIfConfigBackUp, then monitors eltexFlIfStatusTable/eltexFlIfStatusEntry keyed by eltexFlIfIndex to see which interface is currently forwarding. Enabling eltexFlEnableStatusChangeNotif lets the switch send a trap the moment the primary interface fails and traffic switches to the backup, while eltexFlIfConfigPreemptionDelay governs how quickly traffic reverts once the primary recovers.

What Can Be Monitored

primary/backup interface pairing
active interface in Flex Links pair
preemption mode and delay
link status change events

Imported Objects

From ELTEX-SMI-ACTUAL

eltexLtd

MODULE-IDENTITY

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
eltexFlexLinksMIB	1.3.6.1.4.1.35265.31			This MIB module is for configuration and status query of Flex Links feature on the Eltex device. Flex Links are a pair of Layer 2 interfaces, where one interface is configured to act as a backup to the other. The feature provides an alternative solution to the Spanning Tree Protocol (STP), allowing users to turn off STP and still provide basic link redundancy. Flex Links are typically configured in service provider or enterprise networks where users do not want to run STP on the device.
eltexFlexLinksMIBNotifs	1.3.6.1.4.1.35265.31.0
NTF eltexFlIfStatusChangeNotif	1.3.6.1.4.1.35265.31.0.1			A eltexFlIfStatusChangeNotif is generated when the value of eltexFlIfStatus changes.
eltexFlexLinksMIBObjects	1.3.6.1.4.1.35265.31.1
eltexFlConfig	1.3.6.1.4.1.35265.31.1.1
eltexFlIfConfigTable	1.3.6.1.4.1.35265.31.1.1.1		not-accessible	This table allows user to configure Flex Links. The Flex Links feature requires interface pairs to be setup. This table allows user to specify such interface pairs. An interface can become part of only one such interface pair at any given time.
eltexFlIfConfigEntry	1.3.6.1.4.1.35265.31.1.1.1.1		not-accessible	An entry containing information about Flex Links configuration. Each entry configures a pair of interfaces for a Flex Links. Only those Layer 2 interfaces which are capable of performing Flex Links operation may be configured in this table. Once an interface is configured as part of a Flex Links pair, such an interface, can not be configured as a part of other Flex Links pairs.
NUM eltexFlIfConfigPrimary	1.3.6.1.4.1.35265.31.1.1.1.1.1	InterfaceIndex	not-accessible	The object indicates the primary interface in this Flex Links pair.
NUM eltexFlIfConfigBackUp	1.3.6.1.4.1.35265.31.1.1.1.1.2	InterfaceIndexOrZero	read-create	The object indicates the back up interface in this Flex Links pair. The value of this object is changed to 0 (zero) if this interface is removed from the ifTable. The SNMP agent is responsible for updating this object's value once the interface is added to the ifTable. The value of 0 (zero) cannot be set.
T/F eltexFlEnableStatusChangeNotif	1.3.6.1.4.1.35265.31.1.1.2	TruthValue	read-write	This variable indicates whether the system produces the eltexFlIfStatusChangeNotif. A value of 'false' will prevent eltexFlIfStatusChangeNotif.
eltexFlIfConfigExtTable	1.3.6.1.4.1.35265.31.1.1.3		not-accessible	This table contains management information, such as of MAC address-table Move Update(MMU), preemption mechanism, VLAN load balancing of Flex Links pair, of interfaces which are capable of supporting these features.
eltexFlIfConfigExtEntry	1.3.6.1.4.1.35265.31.1.1.3.1		not-accessible	An entry containing Flex Links management information for a particular interface.
INT eltexFlIfConfigPreemptionMode	1.3.6.1.4.1.35265.31.1.1.3.1.1	INTEGER	read-write	The object specifies the preemption mechanism for a Flex Link interface pair. off - No preemption happens from active interface to backup interface. forced - The active interface always preempts the backup interface. The preemption occurs after the time specified in eltexFlIfConfigPreemptionDelay. bandwidth - The interface with higher bandwidth always acts as the active interface.
U32 eltexFlIfConfigPreemptionDelay	1.3.6.1.4.1.35265.31.1.1.3.1.2	Unsigned32	read-write	The object specifies the delay time until an interface preempts another interface for a Flex Link interface pair.
eltexFlStatus	1.3.6.1.4.1.35265.31.1.2
eltexFlIfStatusTable	1.3.6.1.4.1.35265.31.1.2.1		not-accessible	A list of interfaces which are members of Flex Links.
eltexFlIfStatusEntry	1.3.6.1.4.1.35265.31.1.2.1.1		not-accessible	An entry, containing status information about a Flex Links interface. Entry is created when an interface is configured as a member of a Flex Links. When an entry is created in the eltexFlIfConfigTable, entries corresponding to eltexFlIfConfigPrimary and eltexFlIfConfigBackUp are created in this table. Entry is deleted when an interface is removed from a Flex Links. When an entry is removed from the eltexFlIfConfigTable, entries corresponding to eltexFlIfConfigPrimary and eltexFlIfConfigBackUp are deleted from this table.
NUM eltexFlIfIndex	1.3.6.1.4.1.35265.31.1.2.1.1.1	InterfaceIndex	read-only	The index value which uniquely identifies the interface to which this entry is applicable. eltexFlIfIndex is the same as the ifIndex of the interface associated with a Flex Links.
INT eltexFlIfStatus	1.3.6.1.4.1.35265.31.1.2.1.1.2	INTEGER	read-only	The status of an interface which is participating in Flex Links operation. A value of 'forwarding' indicates that, the interface is participating in Flex Links operation and is actively forwarding traffic. A value of 'blocking' indicates that, interface is participating in Flex Links operation and is ready to forward traffic if the interface it backs up in Flex Links operation goes down. A value of 'down' indicates that, the interface participating in Flex Links operation has gone down. A value of 'unknown' indicates that, the interface is participating Flex Links operation and has entered an unknown state.
eltexFlexLinksMIBConformance	1.3.6.1.4.1.35265.31.2
eltexFlexLinksMIBCompliances	1.3.6.1.4.1.35265.31.2.1
eltexFlexLinksMIBCompliance	1.3.6.1.4.1.35265.31.2.1.1			The compliance statement for entities which implement the ELTEX-FLEX-LINKS-MIB.
eltexFlexLinksMIBGroups	1.3.6.1.4.1.35265.31.2.2
eltexFlexLinksIfConfigGroup	1.3.6.1.4.1.35265.31.2.2.1			A collection of objects providing interface configuration information for Flex Links.
eltexFlexLinksIfStatusGroup	1.3.6.1.4.1.35265.31.2.2.2			A collection of objects providing interface status information for Flex Links.
eltexFlexLinksEnableNotifGroup	1.3.6.1.4.1.35265.31.2.2.3			A collection of objects providing enabling/disabling of the status change notifications for Flex Links.
eltexFlexLinksNotifGroup	1.3.6.1.4.1.35265.31.2.2.4			A collection of notifications providing the status change for Flex Links.
eltexFlexLinksPreemptionGroup	1.3.6.1.4.1.35265.31.2.2.5			A collection of objects providing interface preemption information of Flex Links.

RFC description

Eltex vendor-private MIB for Flex Links feature providing Layer 2 link backup and redundancy without Spanning Tree Protocol.

Start monitoring Eltex MES-series Ethernet switch (Flex Links Layer 2 redundancy) 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 ELTEX-FLEX-LINKS-MIB

What Is ELTEX-FLEX-LINKS-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description