HUAWEI-IF-EXT-MIB :: hwLinkDownReason

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › HUAWEI-IF-EXT-MIB › hwLinkDownReason

hwLinkDownReason

Module: HUAWEI-IF-EXT-MIB

OID (symbolic): HUAWEI-IF-EXT-MIB::hwLinkDownReason

OID (numeric): 1.3.6.1.4.1.2011.5.25.41.1.20.1

Node type: OBJECT-TYPE

Type: INTEGER

Access: accessible-for-notify

Description: The reason code of link changes.

What is hwLinkDownReason?

Reports the specific reason code for why an interface's link/protocol state last changed (e.g. physical link down, LACP negotiation failure, PPP negotiation/authentication failure, BFD session down, tunnel down), carried in notifications so the NMS gets an actionable root cause instead of a bare up/down trap.

OID Breakdown

Upper-level ancestors (9 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.2011huaweiEXPERTV2-MIB
1.3.6.1.4.1.2011.5huaweiMgmtHUAWEI-3COM-OID-MIB
1.3.6.1.4.1.2011.5.25huaweiDatacommHUAWEI-3COM-OID-MIB
Numeric OIDNameModule
1.3.6.1.4.1.2011.5.25.41hwIFExtMibHUAWEI-IF-EXT-MIB
1.3.6.1.4.1.2011.5.25.41.1hwIFExtObjectsHUAWEI-IF-EXT-MIB
1.3.6.1.4.1.2011.5.25.41.1.20hwIFExtTrapObjectsHUAWEI-IF-EXT-MIB
1.3.6.1.4.1.2011.5.25.41.1.20.1hwLinkDownReasonHUAWEI-IF-EXT-MIB