ALCATEL-IND1-UDLD-MIB

All MIBs › ALCATEL-IND1-UDLD-MIB

Organization: Alcatel - Architects Of An Internet World

Last Updated: 2007-02-14

Category: Network Interfaces, Vendor: Alcatel-Lucent

Description: Alcatel OmniSwitch Unidirectional Link Detection MIB for detecting and disabling one-way Ethernet link failures.

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What Is ALCATEL-IND1-UDLD-MIB?

ALCATEL-IND1-UDLD-MIB is an Alcatel enterprise MIB, part of the IND1 MIB family for the OmniSwitch "Birds Of Prey" product line, implementing Unidirectional Link Detection (UDLD) to detect one-way Ethernet link failures that standard link-state monitoring cannot catch. No sample objects were provided for this entry, but by analogy with equivalent UDLD MIBs from other vendors, it would expose per-port UDLD admin/operational mode, bidirectional link state, and a neighbor discovery table identifying connected device IDs and ports. It is used to monitor the protocol-level health of switch ports — confirming whether an enabled port's link is bidirectional or has been flagged unidirectional — which reveals cabling, transceiver, or fiber faults before they can cause forwarding loops. It relates conceptually to standard link-state and spanning-tree monitoring (IF-MIB, 802.1D), though it is Alcatel's own proprietary implementation. It was typically deployed on Alcatel OmniSwitch enterprise switches, particularly on fiber-optic uplinks where undetected one-way failures pose a network-loop risk. Engineers can download the ALCATEL-IND1-UDLD-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ALCATEL-IND1-UDLD-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

Alcatel OmniSwitch switches ("Birds Of Prey" product line)

Monitoring Examples

No sample objects were provided for this MIB, so specific object names cannot be confirmed; based on the module description (an authoritative Alcatel enterprise MIB for the "Birds Of Prey" product line implementing UDLD) an administrator would be expected to poll per-port UDLD state objects, analogous to other vendors' UDLD MIBs, to detect and act on unidirectional links, though the exact object/table names are not available from the given data.

What Can Be Monitored

per-port unidirectional link detection state
UDLD enable/disable status per port

Imported Objects

From ALCATEL-IND1-BASE

softentIND1Udld

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

How to Use in IPNetwork Monitor

Example using alaUdldPortNumProbeSent OID:

Select an Alcatel-Lucent Enterprise OmniSwitch switch 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 alaUdldPortNumProbeSent 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. It reports the number of Probe message sent by a port. 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
alcatelIND1UDLDMIB	1.3.6.1.4.1.6486.801.1.2.1.44.1			This module describes an authoritative enterprise-specific Simple Network Management Protocol (SNMP) Management Information Base (MIB): For the Birds Of Prey Product Line UDLD for detection and disabling unidirectional links. The right to make changes in specification and other information contained in this document without prior notice is reserved. No liability shall be assumed for any incidental, indirect, special, or consequential damages whatsoever arising from or related to this document or the information contained herein. Vendors, end-users, and other interested parties are granted non-exclusive license to use this specification in connection with management of the products for which it is intended to be used. Copyright (C) 1995-2002 Alcatel Internetworking, Incorporated ALL RIGHTS RESERVED WORLDWIDE
alcatelIND1UDLDMIBObjects	1.3.6.1.4.1.6486.801.1.2.1.44.1.1			Branch For UDLD Subsystem Managed Objects.
INT alaUdldGlobalStatus	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.1	INTEGER	read-write	This variable is used to enable or diable UDLD on the switch. The value enable (1) indicates that UDLD should be enabled on the switch. The value disable (2) is used to disable UDLD on the switch. By default, UDLD is disabled on the switch.
INT alaUdldGlobalClearStats	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.2	INTEGER	read-write	Defines the global clear statistics control for UDLD. The value reset (1) indicates that UDLD should clear all statistic counters related to all ports in the system. By default, this object contains a zero value.
INT alaUdldGlobalConfigUdldMode	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.3	INTEGER	read-write	Defines the mode of operation of the UDLD protocol on the interface. normal - The UDLD state machines participates normally in UDLD protocol exchanges. The protocol determination at the end of detection process is always based upon information received in UDLD messages. aggressive - UDLD will shut down all port even in case it loses bidirectional connectivity with the neighbor for a defined period of time.
U32 alaUdldGlobalConfigUdldProbeIntervalTimer	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.4	Unsigned32	read-write	Maximum period of time after which the Probe message is expected from the neighbor. The range supported is 7-90 seconds.
U32 alaUdldGlobalConfigUdldDetectionPeriodTimer	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.5	Unsigned32	read-write	Maximum period of time before which detection of neighbor is expected. If Reply to the Sent Echo message/(s) is not received before, the timer for detection period expires, the link is detected as faulty and the associated port state is marked Undetermined/Shutdown (depending upon the UDLD operation-mode is Normal/Aggressive).
udldPortConfig	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6
alaUdldPortConfigTable	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6.1		not-accessible	A table containing UDLD port configuration information.
alaUdldPortConfigEntry	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6.1.1		not-accessible	A UDLD port configuration entry.
NUM alaUdldPortConfigIfIndex	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6.1.1.1	InterfaceIndex	not-accessible	The ifindex of the port on which UDLD is running
INT alaUdldPortConfigUdldStatus	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6.1.1.2	INTEGER	read-write	This variable is used to enable or diable UDLD on the interface. The value enable (1) indicates that UDLD should be enabled on the interface. The value disable (2) is used to disable UDLD on the interface. By default, UDLD is disabled on the interface.
INT alaUdldPortConfigUdldMode	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6.1.1.3	INTEGER	read-write	Defines the mode of operation of the UDLD protocol on the interface. normal - The UDLD state machines participates normally in UDLD protocol exchanges. The protocol determination at the end of detection process is always based upon information received in UDLD messages. aggressive - UDLD will shut down a port even in case it loses bidirectional connectivity with the neighbor for a defined period of time.
U32 alaUdldPortConfigUdldProbeIntervalTimer	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6.1.1.4	Unsigned32	read-write	Maximum period of time after which the Probe message is expected from the neighbor. The range supported is 7-90 seconds.
U32 alaUdldPortConfigUdldDetectionPeriodTimer	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6.1.1.5	Unsigned32	read-write	Maximum period of time before which detection of neighbor is expected. If Reply to the Sent Echo message/(s) is not received before, the timer for detection period expires, the link is detected as faulty and the associated port state is marked Undetermined/Shutdown (depending upon the UDLD operation-mode is Normal/Aggressive).
INT alaUdldPortConfigUdldOperationalStatus	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.6.1.1.6	INTEGER	read-only	The state of the interface as determined by UDLD operation.
udldPortStats	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7
alaUdldPortStatsTable	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1		not-accessible	A table containing UDLD statistics information.
alaUdldPortStatsEntry	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1.1		not-accessible	A UDLD Statistics entry (per port).
NUM alaUdldPortStatsIfIndex	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1.1.1	InterfaceIndex	not-accessible	The ifindex of the port on which UDLD is running
U32 alaUdldNumUDLDNeighbors	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1.1.2	Unsigned32	read-only	This object gives the number of neighbors for the interface.
INT alaUdldPortStatsClear	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1.1.3	INTEGER	read-write	Reset all statistics parameters corresponding to this port. By default, this objects contains a zero value.
C32 alaUdldPortNumProbeSentEx	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1.1.4	Counter32	read-only	Number of Probe message sent by a port.
C32 alaUdldPortNumEchoSent	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1.1.5	Counter32	read-only	Number of Echo message sent by a port.
C32 alaUdldPortNumInvalidRcvd	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1.1.6	Counter32	read-only	Number of Invalid message received by a port.
C32 alaUdldPortNumFlushRcvd	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.7.1.1.7	Counter32	read-only	Number of UDLD-Flush message received by a port.
udldPortNeighborStats	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.8
alaUdldPortNeighborStatsTable	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.8.1		not-accessible	UDLD port's PDU related statistics for a neighbor.
alaUdldPortNeighborStatsEntry	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.8.1.1		not-accessible	A UDLD Statistics entry (per port, per neighbor).
NUM alaUdldPortNeighborStatsIfIndex	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.8.1.1.1	InterfaceIndex	not-accessible	The ifindex of the port on which UDLD is running
U32 alaUdldNeighborIfIndex	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.8.1.1.2	Unsigned32	not-accessible	The index of the neighbor to which the Statistics belong
STR alaUdldNeighborName	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.8.1.1.3	SnmpAdminString	read-only	The name of the neighbor
C32 alaUdldNumHelloRcvd	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.8.1.1.4	Counter32	read-only	This object gives the number of hello messages recieved from the neighbor for this interface.
C32 alaUdldNumEchoRcvd	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.8.1.1.5	Counter32	read-only	This object gives the number of echo messages received from the neighbor for this interface.
INT alaUdldPrevState	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.9	INTEGER	accessible-for-notify	The previous UDLD state of the Port.
INT alaUdldCurrentState	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.10	INTEGER	accessible-for-notify	The current UDLD state of the Port.
NUM alaUdldPortIfIndex	1.3.6.1.4.1.6486.801.1.2.1.44.1.1.11	InterfaceIndex	accessible-for-notify	The ifindex of the port on which UDLD trap is raised
alcatelIND1UDLDMIBConformance	1.3.6.1.4.1.6486.801.1.2.1.44.1.2			Branch for UDLD Module MIB Subsystem Conformance Information.
alcatelIND1UDLDMIBGroups	1.3.6.1.4.1.6486.801.1.2.1.44.1.2.1			Branch for UDLD Module MIB Subsystem Units of Conformance.
udldPortBaseGroup	1.3.6.1.4.1.6486.801.1.2.1.44.1.2.1.1			Collection of objects for management of UDLD Base Group.
udldPortConfigGroup	1.3.6.1.4.1.6486.801.1.2.1.44.1.2.1.2			Collection of objects for management of UDLD Port Configuration Table.
udldPortStatsGroup	1.3.6.1.4.1.6486.801.1.2.1.44.1.2.1.3			Collection of objects for management of UDLD Port Statistics Table.
udldPortNeighborStatsGroup	1.3.6.1.4.1.6486.801.1.2.1.44.1.2.1.4			Collection of objects for management of UDLD Port Neighbor Statistics Table.
udldPortTrapGroup	1.3.6.1.4.1.6486.801.1.2.1.44.1.2.1.5			Collection of objects for UDLD Traps.
alcatelIND1UDLDMIBCompliances	1.3.6.1.4.1.6486.801.1.2.1.44.1.2.2			Branch for UDLD Module MIB Subsystem Compliance Statements.
alcatelIND1UDLDMIBCompliance	1.3.6.1.4.1.6486.801.1.2.1.44.1.2.2.1			Compliance statement for UDLD.
alaUdldEvents	1.3.6.1.4.1.6486.801.1.2.1.44.1.3
NTF udldStateChange	1.3.6.1.4.1.6486.801.1.2.1.44.1.3.0.1			The UDLD-state of port has changed. Notify the user by raising the Trap. Notify the Management Entity the previous UDLD-state and UDLD-Current.

RFC description

Detects and disables unidirectional links on Alcatel-Lucent equipment using UniDirectional Link Detection protocol.

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Download ALCATEL-IND1-UDLD-MIB