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What's a MIB?

A MIB (Management Information Base) is a structured document that defines the data a device exposes over SNMP — things like interface counters, system uptime, or CPU load. Each module declares a set of named objects, organized into a tree.

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SNMP (Simple Network Management Protocol) is how network devices — routers, switches, servers — report status and statistics to monitoring tools. It's the protocol; MIBs are the vocabulary it uses to describe what's being asked for.

What's an OID?

An OID (Object Identifier) is the numeric address of one piece of data in a MIB — a dotted sequence like 1.3.6.1.2.1.1.1, read from the root of a global tree down to one specific object. Names are easier to read; OIDs are what's actually sent over the wire.

Try it: sysDescr (1.3.6.1.2.1.1.1) →

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HUAWEI-IPDSLAM-L3PROTOCOL-MIB

13 objects

No module-level DESCRIPTION found.

Imported Objects

HUAWEI-DEVICE-MIB	hwFrameIndex hwOntIndex hwPortIndex hwSlotIndex
HUAWEI-MIB	huaweiUtility
HUAWEI-VLAN-MIB	hwVlanID hwVlanIndex hwVlanIpAddress hwVlanMngObject
IF-MIB	InterfaceIndex InterfaceIndexOrZero
INET-ADDRESS-MIB	InetAddress InetAddressType
SNMPv2-SMI	Integer32 IpAddress MODULE-IDENTITY NOTIFICATION-TYPE OBJECT-TYPE TimeTicks Unsigned32
SNMPv2-TC	MacAddress TEXTUAL-CONVENTION

Type Definitions

Name	Syntax	Status	Description
HWBgpAfi	INTEGER { ipv4(1), ipv6(2), vpls(25), l2vpn(196) }	current	Address Family Identifier(AFI) for BGP peer.
HWBgpPeerState	INTEGER { idle(1), connect(2), active(3), opensent(4), openconfirm(5), established(6) }	current	State of BGP peer.
HWBgpSafi	INTEGER { unicast(1), multicast(2), mpls(4), vpls(65), vpn(128) }	current	Subsequent Address Family Identifier(SAFI) for BGP peer.
HWOspfNbrState	INTEGER { down(1), attempt(2), init(3), twoWay(4), exchangeStart(5), exchange(6), loading(7), full(8) }	current	State of OSPF neighbor.
HWOspfv2NbrChgReason	INTEGER { adjacencyHoldTimerExpired(1), physicalInterfaceChange(2), ospfProtocolReason(3), bfdSessionStateChange(4), configureChange(5), peerRouterReason(6), waitingForEstablishingNeighbor(7), alarmCleared(100) }	current	Reason of OSPF neighbor state change.
HWOspfv3AreaIdTc	Unsigned32 (0..'FFFFFFFF'h)	current	An OSPFv3 Area Identifier
HWOspfv3IfInstIdTc	Unsigned32 (0..255)	current	An OSPFv3 interface instance ID
HWOspfv3NbrState	INTEGER { down(1), attempt(2), init(3), twoWay(4), exchangeStart(5), exchange(6), loading(7), full(8) }	current	State of OSPFv3 neighbor state.
HWOspfv3NbrStateChgReason	INTEGER { noEvent(1), receivedHelloPacket(2), start(3), receivedTwoWay(4), negotiationDone(5), exchangeDone(6), receivedBadLSRequest(7), loadingDone(8), establishedAdjacency(9), mismatchInSeqNumber(10), receivedOneWay(11), nbrKilled(12), inactivityTimerExpired(13), linkDown(14) }	current	Reason of OSPFv3 neighbor state change.
HWOspfv3RouterIdTc	Unsigned32 (0..'FFFFFFFF'h)	current	A 32-bit, unsigned integer uniquely identifying the router in the Autonomous System. To ensure uniqueness, this may default to the value of one of the router's IPv4 host addresses if IPv4 is configured on the router.
HWOspfv3VirtNbrState	INTEGER { down(1), attempt(2), init(3), twoWay(4), exchangeStart(5), exchange(6), loading(7), full(8) }	current	State of OSPFv3 vlink neighbor state.
HWOspfVirtNbrState	INTEGER { down(1), attempt(2), init(3), twoWay(4), exchangeStart(5), exchange(6), loading(7), full(8) }	current	Stae of OSPF vlink neighbor state.
HWPimNeighborNotificationReason	INTEGER { holdTimeExpired(1), notReceiveHelloForALongTime(2), interfaceIsDown(3), receiveHelloAgain(4), neighbourIsDeleted(5), alarmTimeOut(6), receiveHelloHoldTimeZero(7), bfdSessionDown(8), userOperation(9), alarmClear(100) }	current	Reason of Pim Neighbor Notification.