A3COM-HUAWEI-DLDP-MIB

All MIBs › A3COM-HUAWEI-DLDP-MIB

Organization: Huawei 3Com Technologies Co., Ltd.

Last Updated: 2004-12-13

Category: Network Interfaces, Vendor: H3C/HH3C

Description: Manages the H3C Device Link Detection Protocol (DLDP), monitoring unidirectional link status and port states.

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 A3COM-HUAWEI-DLDP-MIB?

A3COM-HUAWEI-DLDP-MIB (labeled internally with h3c object prefixes) manages the Device Link Detection Protocol on H3C/3Com-Huawei switches, a protocol used to detect unidirectional (one-way) link failures that standard link-state detection misses. It exposes DLDP operating mode, global enable state, detection interval, authentication settings, and per-port DLDP state and configuration tables. This is fundamentally a link/port health monitoring MIB: it lets an operator watch h3cDLDPPortState to see whether a port has been shut down due to a detected unidirectional link fault, which is a software-driven protective action taken by the switch to prevent loops or blackholed traffic. It is a vendor-specific extension in the shared 3Com/Huawei/H3C enterprise MIB tree and typically works alongside spanning-tree and interface MIBs (IF-MIB) for full port status context. It is deployed on H3C/3Com Ethernet switches in campus and data center networks using fiber links where unidirectional failures are a known risk. Engineers can download the A3COM-HUAWEI-DLDP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in A3COM-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

H3C Ethernet switches
3Com/Huawei enterprise switches

Monitoring Examples

An operator would poll h3cDLDPPortStateTable/h3cDLDPPortStateEntry to check h3cDLDPPortState on fiber-connected switch ports, watching for a transition to a shutdown or unidirectional-fault state that indicates one side of a link has stopped receiving traffic. Cross-checking h3cDLDPSystemEnable and h3cDLDPInterval confirms whether DLDP detection is active and how frequently probes run, while h3cDLDPUnidirectionalShutdown shows whether the port was automatically disabled in response to a fault.

What Can Be Monitored

DLDP global enable state
per-port DLDP link state
unidirectional link fault detection
port auto-shutdown status
detection interval configuration

Imported Objects

From A3COM-HUAWEI-OID-MIB

h3cCommon

OBJECT-IDENTITY

From RFC1213-MIB

ifIndex

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

MacAddress
TEXTUAL-CONVENTION
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
h3cDldp	1.3.6.1.4.1.43.45.1.10.2.43			HUAWEI-3COM DLDP (Device Link Detection Protocol) MIB
h3cDLDPMibObject	1.3.6.1.4.1.43.45.1.10.2.43.1
h3cDLDPConfigGroup	1.3.6.1.4.1.43.45.1.10.2.43.1.1
INT h3cDLDPWorkMode	1.3.6.1.4.1.43.45.1.10.2.43.1.1.1	INTEGER	read-write	The work mode of DLDP. Normal mode means DLDP does not detect neighbor on its own initiative when all neighbors aged. Enhance mode means DLDP detects neighbor on its own initiative when all neighbors aged.
T/F h3cDLDPSystemEnable	1.3.6.1.4.1.43.45.1.10.2.43.1.1.2	TruthValue	read-write	DLDP enable or disable systematically. This node only supports set operation. If setting it to true, all the fiber ports will enable DLDP and the agent automatically creates new rows for each port in h3cDLDPPortDLDPTable. If setting it to false, all the fiber ports will disable DLDP and the agent automatically destroy the corresponding rows in h3cDLDPPortDLDPTable.
T/F h3cDLDPSystemReset	1.3.6.1.4.1.43.45.1.10.2.43.1.1.3	TruthValue	read-write	DLDP reset systematically. This node only supports set operation. If the value of h3cDLDPSystemReset is true, and the current state is disable, it will change to inactive while the port is down or active while the port is up. If h3cDLDPPortDLDPState is not disable, it does not change.
INT h3cDLDPInterval	1.3.6.1.4.1.43.45.1.10.2.43.1.1.4	INTEGER	read-write	The interval of sending an advertisement PDU. unit : second
INT h3cDLDPAuthenticationMode	1.3.6.1.4.1.43.45.1.10.2.43.1.1.5	INTEGER	read-write	Type of authentication mode.
OCT h3cDLDPAuthenticationPassword	1.3.6.1.4.1.43.45.1.10.2.43.1.1.6	OCTET STRING	read-write	This is the password for authentication. If the value of h3cDLDPAuthenticationMode is null, the user cannot set this node. If the value of h3cDLDPAuthenticationMode is simple or MD5, the user must set this node with a string. When the user gets or walks this node, it displays a cipher password if h3cDLDPAuthenticationMode is MD5 or simple or a zero-length string if h3cDLDPAuthenticationMode is null.
INT h3cDLDPUnidirectionalShutdown	1.3.6.1.4.1.43.45.1.10.2.43.1.1.7	INTEGER	read-write	The mode of unidirectional shutdown. It indicates the shutdown mode when a unidirectional link happened. Auto mode means the port will be shut down automatically when DLDP detects unidirectional link. Manual mode means the port needs to be shut down by the administrator manually when DLDP detects unidirectional link.
h3cDLDPPortStateTable	1.3.6.1.4.1.43.45.1.10.2.43.1.2		not-accessible	The table of the Ethernet ports of a LAN switch.
h3cDLDPPortStateEntry	1.3.6.1.4.1.43.45.1.10.2.43.1.2.1		not-accessible	Information about a h3cDLDPPortDLDPTable entity.
ENA h3cDLDPPortState	1.3.6.1.4.1.43.45.1.10.2.43.1.2.1.1	EnabledStatus	read-write	State of a port. If setting it to enabled, the port will enable DLDP and a new row will be added in h3cDLDPPortDLDPTable for this port. If setting it to disabled, the port will disable DLDP and the corresponding row will be destroyed in h3cDLDPPortDLDPTable.
h3cDLDPPortDLDPTable	1.3.6.1.4.1.43.45.1.10.2.43.1.3		not-accessible	Table of a LAN switch's ports, which enable DLDP.
h3cDLDPPortDLDPEntry	1.3.6.1.4.1.43.45.1.10.2.43.1.3.1		not-accessible	The information of a port, which enable DLDP.
DLD h3cDLDPPortDLDPState	1.3.6.1.4.1.43.45.1.10.2.43.1.3.1.1	DLDPStatus	read-only	Operating state of DLDP on the port. It is relational with h3cDLDPPortState and h3cDLDPLinkState.
INT h3cDLDPLinkState	1.3.6.1.4.1.43.45.1.10.2.43.1.3.1.2	INTEGER	read-only	The link state of the port.
T/F h3cDLDPPortDLDPReset	1.3.6.1.4.1.43.45.1.10.2.43.1.3.1.3	TruthValue	read-write	DLDP reset systematically. This node only supports set operation. If the value of h3cDLDPPortDLDPReset is true, and the current state is disable, it will change to inactive while the port is down or active while the port is up.
h3cDLDPNeighborTable	1.3.6.1.4.1.43.45.1.10.2.43.1.4		not-accessible	Table of a port's neighbors.
h3cDLDPNeighborEntry	1.3.6.1.4.1.43.45.1.10.2.43.1.4.1		not-accessible	The information of a neighbor.
MAC h3cDLDPNeighborBridgeMac	1.3.6.1.4.1.43.45.1.10.2.43.1.4.1.1	MacAddress	not-accessible	The bridge MAC address of a neighbor.
I32 h3cDLDPNeighborPortIndex	1.3.6.1.4.1.43.45.1.10.2.43.1.4.1.2	Integer32	not-accessible	The port index of a neighbor.
DLD h3cDLDPNeighborState	1.3.6.1.4.1.43.45.1.10.2.43.1.4.1.3	DLDPNeighborStatus	read-only	The state of a neighbor.
I32 h3cDLDPNeighborAgingTime	1.3.6.1.4.1.43.45.1.10.2.43.1.4.1.4	Integer32	read-only	The aging time of a neighbor. unit: second.
h3cDLDPTrapObject	1.3.6.1.4.1.43.45.1.10.2.43.2
h3cDLDPNotification	1.3.6.1.4.1.43.45.1.10.2.43.2.1
NTF h3cDLDPUnidirectionalPort	1.3.6.1.4.1.43.45.1.10.2.43.2.1.1			It will send a SNMP trap when the state of a port has changed to unidirectional-link.

RFC description

Device Link Detection Protocol MIB for detecting unidirectional links to prevent loop communication.

Start monitoring H3C Ethernet switches 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 A3COM-HUAWEI-DLDP-MIB

What Is A3COM-HUAWEI-DLDP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description