HUAWEI-DLDP-MIB

All MIBs › HUAWEI-DLDP-MIB

Organization: Huawei Technologies co.,Ltd.

Last Updated: 2008-07-15

Category: Technology: Loop Detection, Technology: Switching/L2, Vendor: Huawei

Description: Huawei DLDP (Device Link Detection Protocol) MIB for managing unidirectional link detection and automatic shutdown of one-way links on switches.

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What Is HUAWEI-DLDP-MIB?

HUAWEI-DLDP-MIB is a Huawei private MIB for the Device Link Detection Protocol (DLDP), a Huawei feature analogous to Cisco's UDLD that detects unidirectional (one-way) fiber or copper links and can automatically shut down the affected port to prevent loops or connectivity issues. It exposes objects for globally enabling/disabling DLDP, enabling alarms, clearing per-port statistics, and configuring the protocol's work mode. Its monitoring value lies in surfacing unidirectional-link faults and the resulting port shutdown state, a software-driven fault-detection function protecting against physical-layer wiring problems. It works in conjunction with the standard IF-MIB since DLDP operates per physical interface and can change an interface's operational state. It is deployed on Huawei switches and routers with fiber uplinks where a mismatched or partially failed link (e.g., a broken transmit fiber) needs automatic detection. Engineers can download the HUAWEI-DLDP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HUAWEI-DLDP-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

Huawei switches and routers with fiber-optic uplinks

Monitoring Examples

An operator checks the global DLDP enable/alarm objects to confirm the protocol is active network-wide, then inspects the per-port DLDP state to see if any port has detected a unidirectional link and been forced into an error-disabled state. If a specific uplink port shows a DLDP-triggered shutdown, that reveals a physical fiber problem (e.g., a bad transmit or receive strand) rather than a logical configuration issue. Clearing per-port statistics after a fiber repair lets the operator confirm the link stabilizes and DLDP no longer reports errors.

What Can Be Monitored

DLDP global enable/disable state
per-port unidirectional-link alarm status
port shutdown state due to DLDP
DLDP work mode configuration
per-port DLDP statistics

Imported Objects

From HUAWEI-MIB

hwDatacomm

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From P-BRIDGE-MIB

EnabledStatus

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using hwDldpPortStatisticsTx OID:

Select a Huawei switch or router 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 hwDldpPortStatisticsTx 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 describes the number of packets sent on the activated 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
hwDldpMIB	1.3.6.1.4.1.2011.5.25.173			This file is a DLDP-MIB. It provides the functions such as globally enabling or disabling the DLDP protocol, enabling the global alarm, clearing statistics on ports and configuring work mode.
hwDldpObjects	1.3.6.1.4.1.2011.5.25.173.1
hwDldpConfiguration	1.3.6.1.4.1.2011.5.25.173.1.1
ENA hwDldpEnable	1.3.6.1.4.1.2011.5.25.173.1.1.1	EnabledStatus	read-write	Globally enable or disable the DLDP configuration. If the hwDldpEnable is 1, DLDP is enabled. If the hwDldpEnable is 2, DLDP is disabled. By default, DLDP is disabled.
INT hwDldpUnidirectionalShutdown	1.3.6.1.4.1.2011.5.25.173.1.1.2	INTEGER	read-write	When the device discovers a one-way link, the shutdown mode of port. The modes include auto and manual. By default, DLDP is auto.
INT hwDldpWorkMode	1.3.6.1.4.1.2011.5.25.173.1.1.3	INTEGER	read-write	It configures the work mode of the DLDP protocol, including normal and enhanced mode. By default, the mode is enhanced.
I32 hwDldpAdvertInterval	1.3.6.1.4.1.2011.5.25.173.1.1.4	Integer32	read-write	Global interval for sending advertisement packets for the DLDP configuration. By default, the interval is 5s.
I32 hwDelayDownTimer	1.3.6.1.4.1.2011.5.25.173.1.1.5	Integer32	read-write	Global timeout of DelayDown timer. The value rangs from 1s to 5s, By default, the time is 1s.
INT hwDldpAuthenMode	1.3.6.1.4.1.2011.5.25.173.1.1.6	INTEGER	read-write	Global authentication mode of the DLDP configuration. It has three authentication modes, including none, md5,and simple. By default the authentication mode is none.
OCT hwDldpMd5Password	1.3.6.1.4.1.2011.5.25.173.1.1.7	OCTET STRING	read-write	Global md5 password for authentication when authentication is md5.
OCT hwDldpSimplePassword	1.3.6.1.4.1.2011.5.25.173.1.1.8	OCTET STRING	read-write	Global simple password for authentication when authentication is simple.
hwDldpPortTable	1.3.6.1.4.1.2011.5.25.173.1.1.9		not-accessible	DLDP port configuration table.
hwDldpPortEntry	1.3.6.1.4.1.2011.5.25.173.1.1.9.1		not-accessible	Entries of the DLDP port configuration table.
POR hwDldpPortIndex	1.3.6.1.4.1.2011.5.25.173.1.1.9.1.1	PortIndex	not-accessible	It describes enabled DLDP port index. Each port is uniquely identified by a port number. It ranges from 0 to 575.
T/F hwDldpPortStateReset	1.3.6.1.4.1.2011.5.25.173.1.1.9.1.2	TruthValue	read-create	It describes the DLDP status of the reset port.
INT hwDldpPortState	1.3.6.1.4.1.2011.5.25.173.1.1.9.1.3	INTEGER	read-only	Port state has seven states, including initial, inactive, active, advertisement, probe, disable, and delayDown.
INT hwDldpPortLinkState	1.3.6.1.4.1.2011.5.25.173.1.1.9.1.4	INTEGER	read-only	Port state has two modes, including up and down.
T/F hwDldpResetStatistics	1.3.6.1.4.1.2011.5.25.173.1.1.9.1.5	TruthValue	read-create	It clears the statistics of packets received and sent on the current port.
ROW hwDldpRowStatus	1.3.6.1.4.1.2011.5.25.173.1.1.9.1.6	RowStatus	read-create	Operation of CreateAndGo can be used to create a new instance, and operation of Destroy be used to destroy an existent index. But these operations will not take effect if they are not activated by running the command of activating or setting mib node of hwDldpEnable.
hwDldpNeighbourTable	1.3.6.1.4.1.2011.5.25.173.1.1.10		not-accessible	DLDP Neighbour configuration table.
hwDldpNeighbourEntry	1.3.6.1.4.1.2011.5.25.173.1.1.10.1		not-accessible	Entries of the DLDP Neighbour configuration table.
MAC hwDldpNeighbourMacAddr	1.3.6.1.4.1.2011.5.25.173.1.1.10.1.1	MacAddress	not-accessible	When the activated port detects a neighbor, it can record the neighbor information, including MAC address of neighbor. The port may detect multiple neighbors.
I32 hwDldpNeighbourPortIndex	1.3.6.1.4.1.2011.5.25.173.1.1.10.1.2	Integer32	not-accessible	When the activated port detects a neighbor, it can record the port index of the neighbour.
OCT hwDldpNeighbourPortName	1.3.6.1.4.1.2011.5.25.173.1.1.10.1.3	OCTET STRING	read-only	When the activated port detects a neighbor, it can record the port name of the neighbour.
INT hwDldpNeighbourState	1.3.6.1.4.1.2011.5.25.173.1.1.10.1.4	INTEGER	read-only	When the activated port detects a neighbor, it can record the state of the neighbour, and its value includes unknown, one way, and two way.
I32 hwDldpNeighbourAgeTime	1.3.6.1.4.1.2011.5.25.173.1.1.10.1.5	Integer32	read-only	When the activated port detects a neighbor, it can record the aging time of the neighbor. The aging time is three times the interval for sending advertisement packets.
hwDldpStatistics	1.3.6.1.4.1.2011.5.25.173.1.2
hwDldpPortStatisticsTable	1.3.6.1.4.1.2011.5.25.173.1.2.1		not-accessible	DLDP port statics configuration table.
hwDldpPortStatisticsEntry	1.3.6.1.4.1.2011.5.25.173.1.2.1.1		not-accessible	Entries of the table of the packets sent or received on the DLDP port.
C32 hwDldpPortStatisticsTxEx	1.3.6.1.4.1.2011.5.25.173.1.2.1.1.1	Counter32	read-only	It describes the number of packets sent on the activated port.
C32 hwDldpPortStatisticsRxTotal	1.3.6.1.4.1.2011.5.25.173.1.2.1.1.2	Counter32	read-only	It describes the number of packets received on the activated port.
C32 hwDldpPortStatisticsRxError	1.3.6.1.4.1.2011.5.25.173.1.2.1.1.3	Counter32	read-only	It describes the number of error packets received on the activated port.
C32 hwDldpPortStatisticsRxLoop	1.3.6.1.4.1.2011.5.25.173.1.2.1.1.4	Counter32	read-only	It describes the number of loop packets received on the activated port.
C32 hwDldpPortStatisticsRxValid	1.3.6.1.4.1.2011.5.25.173.1.2.1.1.5	Counter32	read-only	It describes the number of valid packets received on the activated port.
C32 hwDldpPortStatisticsRxAuthenFail	1.3.6.1.4.1.2011.5.25.173.1.2.1.1.6	Counter32	read-only	It describes the number of authentication failure packets received on the activated port.
hwDldpPortTrapObjects	1.3.6.1.4.1.2011.5.25.173.2
NUM hwDldpTrapInterfaceIndex	1.3.6.1.4.1.2011.5.25.173.2.1	InterfaceIndex	accessible-for-notify	It describes the interface index of the activated port that detected one way or found that two way is resumed.
OCT hwDldpTrapIfName	1.3.6.1.4.1.2011.5.25.173.2.2	OCTET STRING	accessible-for-notify	It describes the interface name of the activated port that detected one way or found that two way is resumed.
OCT hwDldpTrapFaultReason	1.3.6.1.4.1.2011.5.25.173.2.3	OCTET STRING	accessible-for-notify	It describes the reason interface fault.
hwDldpTraps	1.3.6.1.4.1.2011.5.25.173.3
NTF hwDldpUnidirectionalLink	1.3.6.1.4.1.2011.5.25.173.3.1			Notify the NMS that the DLDP detected one way. The hwDldpTrapInterfaceIndex node is the interface index.
NTF hwDldpLinkResume	1.3.6.1.4.1.2011.5.25.173.3.2			Notify the NMS that the DLDP detected that unidirectional link was resumed. The hwDldpTrapInterfaceIndex node is interface index.
NTF hwDldpLoopDetect	1.3.6.1.4.1.2011.5.25.173.3.3			Notify the NMS that the DLDP detected Loop State. The hwDldpTrapInterfaceIndex node is the interface index.
NTF hwDldpLoopResume	1.3.6.1.4.1.2011.5.25.173.3.4			Notify the NMS that the DLDP detected Loop State was resumed. The hwDldpTrapInterfaceIndex node is interface index.
hwDldpConformance	1.3.6.1.4.1.2011.5.25.173.4
hwDldpCompliances	1.3.6.1.4.1.2011.5.25.173.4.1
hwDldpCompliance	1.3.6.1.4.1.2011.5.25.173.4.1.1			The compliance statement for SNMP entities which implement the HUAWEI-DLDP-MIB.
hwDldpGroups	1.3.6.1.4.1.2011.5.25.173.4.2
hwDldpConfigGroup	1.3.6.1.4.1.2011.5.25.173.4.2.1			The collection of objects which are used to configure the DLDP implementation behavior. This group is mandatory for agents which implement the DLDP.
hwDldpStatisticsGroup	1.3.6.1.4.1.2011.5.25.173.4.2.2			The collection of objects which are used to represent DLDP statistics. This group is mandatory for agents which implement the DLDP and have the capability of receiving and transmitting DLDP frames.
hwDldpPortGroup	1.3.6.1.4.1.2011.5.25.173.4.2.3			The collection of objects indicates the information of port.
hwDldpPortTrapGroup	1.3.6.1.4.1.2011.5.25.173.4.2.4			The collection of objects indicates that the activated port index detected one way or found that two way is resumed.
hwDldpTrapGroup	1.3.6.1.4.1.2011.5.25.173.4.2.5			The collection of notifications used to indicate that the HUAWEI-DLDP-MIB data is consistent and indicate the general status information. This group is mandatory for agents which implement the DLDP and have the capability of receiving DLDP frames.

RFC description

Vendor-private MIB for Huawei Device Link Detection Protocol (DLDP), enabling detection and shutdown of unidirectional links to prevent layer-2 topology loops.

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Download HUAWEI-DLDP-MIB