ENTERASYS-ETH-OAM-EXT-MIB

All MIBs › ENTERASYS-ETH-OAM-EXT-MIB

Organization: Enterasys Networks, Inc

Last Updated: 2012-02-07

Category: Technology: OAM, Vendor: Enterasys/Cabletron

Description: Enterasys Networks proprietary extension to the IEEE 802.3ah Ethernet OAM MIB providing additional OAM configuration 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 ENTERASYS-ETH-OAM-EXT-MIB?

ENTERASYS-ETH-OAM-EXT-MIB is a vendor-specific Enterasys Networks MIB that extends the standard IEEE 802.3ah Ethernet OAM MIB with additional read-write configuration objects. It exposes per-interface OAM operational status, event-configuration objects controlling automated actions for symbol-error, frame-error, and frame-seconds-error conditions, and grouping tables for Unidirectional Link Detection (ULD). This directly supports hardware fault monitoring, since OAM operational status and configured error-event actions determine how quickly and automatically a switch reacts to link-layer errors or a one-way (unidirectional) fiber/link failure. The module explicitly states it complements the IETF/IEEE standard DOT3-OAM-MIB, depending on that base standard for core OAM object definitions. It is typically deployed on Enterasys Networks managed switches connected over fiber links where Ethernet OAM is enabled for link health monitoring, and administrators often load the module into an ENTERASYS-ETH-OAM-EXT-MIB MIB Browser to inspect these objects directly.

IPNetwork Monitor allows you to monitor SNMP objects defined in ENTERASYS-ETH-OAM-EXT-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

Enterasys Networks managed Ethernet switch

Monitoring Examples

etsysEthOamExtTable/Entry reports etsysEthOamExtOperStatus per OAM-enabled interface, letting an admin confirm Ethernet OAM is actually operational on a link. etsysEthOamExtEventConfigTable configures actions for error conditions like etsysEthOamExtEventConfigErrSymPeriodActions and etsysEthOamExtEventConfigErrFrameActions, controlling automated responses such as port disable to excessive symbol or frame errors, while etsysEthOamExtUldGroupTable groups interfaces for Unidirectional Link Detection, so a link reporting a fault via ULD while etsysEthOamExtOperStatus shows down would confirm a one-way fiber failure.

What Can Be Monitored

Ethernet OAM operational status per interface
OAM error event thresholds and actions
unidirectional link detection (ULD) group membership
error notification retry configuration

Imported Objects

From ENTERASYS-MIB-NAMES

etsysModules

OBJECT-IDENTITY

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using etsysEthOamExtUldPortFastTxCount OID:

Select an Enterasys Networks switch (legacy, later Extreme Networks) (802.3ah Ethernet OAM extensions) 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 etsysEthOamExtUldPortFastTxCount 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 total number of Information OAMPDUs with Fast ULD Information TLVs transmitted by the port OAM peer since reboot. 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
etsysEthOamExtMIB	1.3.6.1.4.1.5624.1.2.78			The Enterasys Networks Proprietary MIB module for entities implementing Ethernet OAM. This MIB provides read-write access to configuration objects not provided in the IEEE Standard Ethernet IEEE8023-DOT3-OAM-MIB [DOT3-OAM-MIB].
etsysEthOamExtObjects	1.3.6.1.4.1.5624.1.2.78.1
etsysEthOamExtTable	1.3.6.1.4.1.5624.1.2.78.1.1		not-accessible	This table contains detailed information about OAM capabilities for each Ethernet-like interface. There is only one entry per Ethernet-like interface allowed.
etsysEthOamExtEntry	1.3.6.1.4.1.5624.1.2.78.1.1.1		not-accessible	An entry in the OAM table containing detailed information about the OAM function. Each Ethernet-like interface is only allowed one peer OAM entity. Entries are auotmatically created.
INT etsysEthOamExtOperStatus	1.3.6.1.4.1.5624.1.2.78.1.1.1.1	INTEGER	read-write	This value defines the operational status for the Ethernet-like interface. If the link is operating normally, the value is operational(1). State disabled(2) is entered if an error occurs. Errors that will cause this state are Symbol Period error, Frame Period error, Frame error, and Frame Seconds Summary error. Setting the state to operational(1) when it is in state disabled(2) will cause all violation errors to be cleared. Any other write of this object will have no effect. This value SHOULD NOT be maintained across reboot.
etsysEthOamExtEventConfigTable	1.3.6.1.4.1.5624.1.2.78.1.2		not-accessible	A table that controls extended configuration of Ethernet OAM Event Notification. This table contains the mechanisms to define actions to be taken when error thresholds are reached. There is only one entry per Ethernet-like interface allowed.
etsysEthOamExtEventConfigEntry	1.3.6.1.4.1.5624.1.2.78.1.2.1		not-accessible	An entry in the OAM Event Configuration table containing information on actions to be taken when various link problems arise. Each Ethernet-like interface is only allowed one entry and is automatically created.
ETS etsysEthOamExtEventConfigErrSymPeriodActions	1.3.6.1.4.1.5624.1.2.78.1.2.1.1	EtsysOamExtErrActions	read-write	The bitmap value used to identify which actions should be taken when a Symbol Period error is triggered.
ETS etsysEthOamExtEventConfigErrFramePeriodActions	1.3.6.1.4.1.5624.1.2.78.1.2.1.2	EtsysOamExtErrActions	read-write	The bitmap value used to identify which actions should be taken when a Frame Period error is triggered.
ETS etsysEthOamExtEventConfigErrFrameActions	1.3.6.1.4.1.5624.1.2.78.1.2.1.3	EtsysOamExtErrActions	read-write	The bitmap value used to identify which actions should be taken when a Frame error is triggered.
ETS etsysEthOamExtEventConfigErrFrameSecsActions	1.3.6.1.4.1.5624.1.2.78.1.2.1.4	EtsysOamExtErrActions	read-write	The bitmap value used to identify which actions should be taken when a Frame Seconds error is triggered.
U32 etsysEthOamExtEventConfigErrNotifRetry	1.3.6.1.4.1.5624.1.2.78.1.2.1.5	Unsigned32	read-write	The number of times to retry an OAM error Event Notification that has not been answered.
etsysEthOamExtUld	1.3.6.1.4.1.5624.1.2.78.1.3
etsysEthOamExtUldGroupTable	1.3.6.1.4.1.5624.1.2.78.1.3.1		not-accessible	A table of objects for Ethernet OAM Unidirectional Link Detection (ULD) which apply to a group of ports that share common system resources.
etsysEthOamExtUldGroupEntry	1.3.6.1.4.1.5624.1.2.78.1.3.1.1		not-accessible	An entry in the OAM ULD group table containing a group index and values to support per group limits on ULD configuration.
U32 etsysEthOamExtUldGroupIndex	1.3.6.1.4.1.5624.1.2.78.1.3.1.1.1	Unsigned32	not-accessible	A unique identifier for this ULD port group status.
U32 etsysEthOamExtUldGroupMaxFastPorts	1.3.6.1.4.1.5624.1.2.78.1.3.1.1.2	Unsigned32	read-only	The maximum number of ports in the ULD port group that can be configured for ULD in the FAST mode.
G32 etsysEthOamExtUldGroupFastPortsInUse	1.3.6.1.4.1.5624.1.2.78.1.3.1.1.3	Gauge32	read-only	The current number of ports in the ULD port group that are configured for ULD in the FAST mode.
etsysEthOamExtUldPortTable	1.3.6.1.4.1.5624.1.2.78.1.3.2		not-accessible	A table that controls extended configuration of Ethernet OAM Unidirectional Link Detection (ULD). This table contains the mechanisms to define the ULD mode and the actions to be taken when a unidirectional link is detected
etsysEthOamExtUldPortEntry	1.3.6.1.4.1.5624.1.2.78.1.3.2.1		not-accessible	An entry in the OAM ULD Port table containing ULD mode, information on actions to be taken when a unidirectional link is detected, and the current status of the ULD configuration. Each Ethernet-like interface is only allowed one entry and is automatically created.
INT etsysEthOamExtUldPortMode	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.1	INTEGER	read-write	This value defines the mode in which OAM Unidirectional Link Detection (ULD) will operate on the port. If disabled, OAM ULD will not operate on the port. In standard mode, OAM will use the standard OAM Discovery state machine to detect a unidirectional link. In fast mode, OAM will use the Enterasys Fast ULD state machine to detect a unidirectional link. In both standard and fast modes, OAM peers must be fully discovered before ULD is active. In standard mode, a unidirectional link is detected after 5 seconds of becoming unidirectional. In fast mode, a unidirectional link is detected in 3 times the active fast timer interval (as fast as 600ms).
INT etsysEthOamExtUldPortAction	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.2	INTEGER	read-write	This value defines the administrative action taken by OAM if a unidirectional link is detected. If the action is syslogOnly, OAM will generate a syslog message. If the action is disablePort, OAM will generate a syslog message and disable the port.
T/F etsysEthOamExtUldPortActiveStatus	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.3	TruthValue	read-only	The active status of ULD on the port. The active status depends on the state of the OAM Discovery state machine. It is active when the OAM Discovery state machine is in the SEND_ANY state. The ULD action is only performed if the ULD status is active.
U32 etsysEthOamExtUldPortFastTimerConfig	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.4	Unsigned32	read-write	The time in 100 millisecond tics between transmits of Fast ULD OAMPDUs to use for the local OAM peer. This value will be advertised by the local OAM peer in the Local Fast ULD Information TLV when the Fast ULD state machine is in the SEND_SLOW state. This value will be used by the OAM peers to negotiate the active fast timer which will be used when the Fast ULD state machine is in the SEND_FAST state.
U32 etsysEthOamExtUldPortActiveFastTimer	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.5	Unsigned32	read-only	The time in 100 millisecond tics between transmits of Fast ULD OAMPDUs that is being used by both the local and remote OAM peers when the Fast ULD state machine is in the SEND_FAST state. This time is negotiated by the OAM peers while the Fast ULD state machine is in the SEND_SLOW state. The value of this interval is used to compute the Fast ULD timeout interval. The Fast ULD timeout Interval is three times the transmit interval of the Fast ULD OAMPDUs to ensure that at least three packets must be dropped before determining that there is a unidirectional link.
INT etsysEthOamExtUldPortActiveFastStatus	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.6	INTEGER	read-only	The active status of Fast ULD on the port. The active status of Fast ULD depends on the configured ULD mode, the state of the OAM Discovery state machine, and the state of the Fast ULD state machine. Fast ULD is notActive(1) if ULD is not configured in the Fast mode. If ULD is configured in Fast mode and ULD is active, the active status will reflect the state of the Fast ULD state machine. In the SEND_SLOW state the active status is activeSlow(2), in the SEND_FAST state the active status is activeFast(3), in the FAULT state the active status is faultDetected(4). In the RESET state, the status is notActive(1).
INT etsysEthOamExtUldPortOperStatus	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.7	INTEGER	read-write	The operational status of the port with respect to ULD. The status is disabled(2) only if the disablePort action is configured and a unidirectional link is detected. Otherswise, the status is operational(1). Setting the status to operational(1) when the status is disabled(2) will clear a unidirectional link error. Any other write of this object will have no effect. This value SHOULD NOT be maintained across reboot.
C32 etsysEthOamExtUldPortFastTxCountEx	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.8	Counter32	read-only	The total number of Information OAMPDUs with Fast ULD Information TLVs transmitted by the port OAM peer since reboot. This value SHOULD NOT be maintained across reboot.
C32 etsysEthOamExtUldPortFastRxCount	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.9	Counter32	read-only	The total number of Information OAMPDUs with a Fast ULD Information TLVs received by this port's OAM peer since reboot. This value SHOULD NOT be maintained across reboot.
C32 etsysEthOamExtUldPortFastRxErrorCount	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.10	Counter32	read-only	The total number of Information OAMPDUs with an Invalid Fast ULD Information TLV received by this port's OAM peer since reboot. This value SHOULD NOT be maintained across reboot.
TIK etsysEthOamExtUldPortLastFastRxTime	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.11	TimeTicks	read-only	The value of aTimeSinceSystemReset (F.2.1) when the last Information OAMPDU with a Fast ULD Information TLV was received by this port's OAM peer. This value SHOULD NOT be maintained across reboot.
U32 etsysEthOamExtUldPortGroupIndex	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.12	Unsigned32	read-only	The ULD port group index for this port.
INT etsysEthOamExtUldPortActiveOamMode	1.3.6.1.4.1.5624.1.2.78.1.3.2.1.13	INTEGER	read-only	The active OAM mode for the port. When a port is configured in the passive OAM mode and ULD is enabled in the standard or fast ULD mode, the passive mode is superceeded by this value. The port will operate as though it is configured in the active OAM mode. If the port is configured in the passive mode and ULD is disabled, the value is passive(1) and OAM will operate in the passive mode. Otherwise, the value is active(2) and OAM will operate in the active mode. This enforces the requirement for ULD that both peers must operate as active OAM clients.
etsysEthOamExtConformance	1.3.6.1.4.1.5624.1.2.78.2
etsysEthOamExtGroups	1.3.6.1.4.1.5624.1.2.78.2.1
etsysEthOamExtGroup	1.3.6.1.4.1.5624.1.2.78.2.1.1			A collection of objects providing information about the Ethernet OAM function.
etsysEthOamExtEventConfigGroup	1.3.6.1.4.1.5624.1.2.78.2.1.2			A collection of objects providing peer information of a peer Ethernet OAM entity.
etsysEthOamExtUldConfigGroup	1.3.6.1.4.1.5624.1.2.78.2.1.3			A collection of objects providing configuration for peer Unidirectional Link Detection for Ethernet OAM.
etsysEthOamExtCompliances	1.3.6.1.4.1.5624.1.2.78.2.2
etsysEthOamExtCompliance	1.3.6.1.4.1.5624.1.2.78.2.2.1			The compliance statement for devices that support etsysEthOamExtMIB.

RFC description

Manages Ethernet OAM extensions on Enterasys switches with unidirectional link detection and error action support.

Start monitoring Enterasys Networks switch (legacy, later Extreme Networks) (802.3ah Ethernet OAM extensions) 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 ENTERASYS-ETH-OAM-EXT-MIB