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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-DHCPSNOOP-MIB

26 objects

The private MIB file includes the DHCP Snooping profile.

Imported Objects

HH3C-LswVLAN-MIB	hh3cdot1qVlanIndex
HH3C-OID-MIB	hh3cCommon
IF-MIB	ifIndex
INET-ADDRESS-MIB	InetAddress InetAddressType
SNMPv2-SMI	Integer32 IpAddress MODULE-IDENTITY NOTIFICATION-TYPE OBJECT-TYPE
SNMPv2-TC	MacAddress TruthValue

OID	Name	Access	Status	Description
1.3.6.1.4.1.25506.2.36	Identityhh3cDhcpSnoop			The private MIB file includes the DHCP Snooping profile.
1.3.6.1.4.1.25506.2.36.1	Nodehh3cDhcpSnoopMibObject
1.3.6.1.4.1.25506.2.36.1.1	Scalarhh3cDhcpSnoopEnable	read-write	current	DHCP Snooping status (enable or disable).
1.3.6.1.4.1.25506.2.36.1.2	Tablehh3cDhcpSnoopTable	not-accessible	current	The table containing information of DHCP clients listened by DHCP snooping and it's enabled or disabled by setting hh3cDhcpSnoopEnable node.
1.3.6.1.4.1.25506.2.36.1.2.1	Rowhh3cDhcpSnoopEntry	not-accessible	current	An entry containing information of DHCP clients.
1.3.6.1.4.1.25506.2.36.1.2.1.1	Columnhh3cDhcpSnoopClientIpAddressType	not-accessible	current	DHCP clients' IP addresses type (IPv4 or IPv6).
1.3.6.1.4.1.25506.2.36.1.2.1.2	Columnhh3cDhcpSnoopClientIpAddress	not-accessible	current	DHCP clients' IP addresses collected by DHCP snooping.
1.3.6.1.4.1.25506.2.36.1.2.1.3	Columnhh3cDhcpSnoopClientMacAddress	read-only	current	DHCP clients' MAC addresses collected by DHCP snooping.
1.3.6.1.4.1.25506.2.36.1.2.1.4	Columnhh3cDhcpSnoopClientProperty	read-only	current	Method of getting IP addresses collected by DHCP snooping.
1.3.6.1.4.1.25506.2.36.1.2.1.5	Columnhh3cDhcpSnoopClientUnitNum	read-only	current	IRF (Intelligent Resilient Fabric) unit number via whom the clients get their IP addresses. The value 0 means this device does not support IRF.
1.3.6.1.4.1.25506.2.36.1.3	Tablehh3cDhcpSnoopTrustTable	not-accessible	current	A table is used to configure and monitor port trusted status.
1.3.6.1.4.1.25506.2.36.1.3.1	Rowhh3cDhcpSnoopTrustEntry	not-accessible	current	An entry containing information about trusted status of ports.
1.3.6.1.4.1.25506.2.36.1.3.1.1	Columnhh3cDhcpSnoopTrustStatus	read-write	current	Trusted status of current port which supports both get and set operation.
1.3.6.1.4.1.25506.2.36.1.4	Tablehh3cDhcpSnoopVlanTable	not-accessible	current	A table is used to configure and monitor DHCP Snooping status of VLANs.
1.3.6.1.4.1.25506.2.36.1.4.1	Rowhh3cDhcpSnoopVlanEntry	not-accessible	current	The entry information about hh3cDhcpSnoopVlanTable.
1.3.6.1.4.1.25506.2.36.1.4.1.1	Columnhh3cDhcpSnoopVlanIndex	not-accessible	current	Current VLAN index.
1.3.6.1.4.1.25506.2.36.1.4.1.2	Columnhh3cDhcpSnoopVlanEnable	read-write	current	DHCP Snooping status of current VLAN.
1.3.6.1.4.1.25506.2.36.2	Nodehh3cDhcpSnoopTraps
1.3.6.1.4.1.25506.2.36.2.0	Nodehh3cDhcpSnoopTrapsPrefix
1.3.6.1.4.1.25506.2.36.2.0.1	Notificationhh3cDhcpSnoopSpoofServerDetected		current	To detect unauthorized DHCP servers on a network, the DHCP snooping device sends DHCP-DISCOVER messages through its downstream port (which is connected to the …
1.3.6.1.4.1.25506.2.36.2.0.2	Notificationhh3cDhcpSnoopNewBinding		current	The device sends a trap when adding a new binding.
1.3.6.1.4.1.25506.2.36.2.1	Nodehh3cDhcpSnoopTrapsObject
1.3.6.1.4.1.25506.2.36.2.1.1	Scalarhh3cDhcpSnoopSpoofServerMac	accessible-for-notify	current	MAC address of the spoofing server and it is derived from link-layer header of offer packet. If the offer packet is relayed by dhcp relay entity, it may be the…
1.3.6.1.4.1.25506.2.36.2.1.2	Scalarhh3cDhcpSnoopSpoofServerIP	accessible-for-notify	current	IP address of the spoofing server and it is derived from IP header of offer packet. A tricksy host may send offer packet use other host's address, so this addr…
1.3.6.1.4.1.25506.2.36.2.1.3	Scalarhh3cDhcpSnoopBindingIP	accessible-for-notify	current	IP address of a new binding.
1.3.6.1.4.1.25506.2.36.2.1.4	Scalarhh3cDhcpSnoopBindingMac	accessible-for-notify	current	MAC address of a new binding.