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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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HH3C-EMDI-MIB

24 objects

The private MIB file includes the network quality information of the device. It is to configure the Enhanced Media Delivery Index.

Imported Objects

HH3C-OID-MIB	hh3cCommon
INET-ADDRESS-MIB	InetAddress InetAddressType
SNMPv2-SMI	Integer32 MODULE-IDENTITY NOTIFICATION-TYPE OBJECT-TYPE Unsigned32

OID	Name	Access	Status	Description
1.3.6.1.4.1.25506.2.251	Identityhh3cEmdi			The private MIB file includes the network quality information of the device. It is to configure the Enhanced Media Delivery Index.
1.3.6.1.4.1.25506.2.251.1	Nodehh3cEmdiNotifications
1.3.6.1.4.1.25506.2.251.1.0	Nodehh3cEmdiNotification
1.3.6.1.4.1.25506.2.251.1.0.1	Notificationhh3cEmdiIndicatorOverThres		current	The trap is generated when the monitored indicator reaches the alarm threshold successively.
1.3.6.1.4.1.25506.2.251.1.0.2	Notificationhh3cEmdiIndicatorOverThresResume		current	The trap is generated when the monitored indicator drops below the alarm threshold successively.
1.3.6.1.4.1.25506.2.251.1.0.3	Notificationhh3cEmdiFlowConflict		current	The trap is generated when the flow bound to a dynamic instance conflicts with the flow in the existing instance.
1.3.6.1.4.1.25506.2.251.1.0.4	Notificationhh3cEmdiInstanceExceed		current	Maximum number of running instances already reached.
1.3.6.1.4.1.25506.2.251.1.1	Nodehh3cEmdiNotificationObjects
1.3.6.1.4.1.25506.2.251.1.1.1	Scalarhh3cEmdiInstanceID	accessible-for-notify	current	eMDI instance ID.
1.3.6.1.4.1.25506.2.251.1.1.2	Scalarhh3cEmdiIndicatorType	accessible-for-notify	current	Monitored indicator type.
1.3.6.1.4.1.25506.2.251.1.1.3	Scalarhh3cEmdiIndicatorValue	accessible-for-notify	current	Monitored indicator value.
1.3.6.1.4.1.25506.2.251.1.1.4	Scalarhh3cEmdiIndicatorThreshold	accessible-for-notify	current	Alarm threshold for the monitored indicator.
1.3.6.1.4.1.25506.2.251.1.1.5	Scalarhh3cEmdiSuppressTimes	accessible-for-notify	current	Number of consecutive alarms to be suppressed before alarming.
1.3.6.1.4.1.25506.2.251.1.1.6	Scalarhh3cEmdiFlowSrcIPType	accessible-for-notify	current	Source IP address type of the flow.
1.3.6.1.4.1.25506.2.251.1.1.7	Scalarhh3cEmdiFlowSrcIP	accessible-for-notify	current	Source IP address of the flow.
1.3.6.1.4.1.25506.2.251.1.1.8	Scalarhh3cEmdiFlowDstIPType	accessible-for-notify	current	Destination IP address type of the flow.
1.3.6.1.4.1.25506.2.251.1.1.9	Scalarhh3cEmdiFlowDstIP	accessible-for-notify	current	Destination IP address of the flow.
1.3.6.1.4.1.25506.2.251.1.1.10	Scalarhh3cEmdiFlowSrcPort	accessible-for-notify	current	Source port of the flow.
1.3.6.1.4.1.25506.2.251.1.1.11	Scalarhh3cEmdiFlowDstPort	accessible-for-notify	current	Destination port of the flow.
1.3.6.1.4.1.25506.2.251.1.1.12	Scalarhh3cEmdiFlowProtocol	accessible-for-notify	current	Transport layer protocol of the flow.
1.3.6.1.4.1.25506.2.251.1.1.13	Scalarhh3cEmdiFlowVlanID	accessible-for-notify	current	VLAN ID.
1.3.6.1.4.1.25506.2.251.1.1.14	Scalarhh3cEmdiFlowVxlanID	accessible-for-notify	current	VXLAN ID.
1.3.6.1.4.1.25506.2.251.1.1.15	Scalarhh3cEmdiChassisID	accessible-for-notify	current	Chassis ID. If the value is 65535, the device is not a stacked device .
1.3.6.1.4.1.25506.2.251.1.1.16	Scalarhh3cEmdiSlotID	accessible-for-notify	current	Slot number.