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SNMP & MIB Basics

What's a MIB?

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What's SNMP?

SNMP (Simple Network Management Protocol) is how routers, switches, servers, and other network devices report status and statistics back to monitoring tools. It's the transport; MIBs are the vocabulary that gives the data it carries any meaning. Most monitoring platforms — Zabbix, PRTG, LibreNMS, Prometheus's SNMP exporter, and plenty of others — rely on this same underlying protocol and MIB structure.

What's an OID?

An OID is the actual address of one piece of data — a dotted sequence like 1.3.6.1.2.1.1.1, read from the root of a shared global tree down to one specific object. Names are for humans; OIDs are what actually gets sent over the wire. Every vendor's private MIBs live under that vendor's own reserved branch of the same tree, which is what lets one numbering system cover both universal and proprietary data.

What is a MIB browser?

A MIB browser is a tool for reading and navigating MIB files — the definitions that describe what data a device can report over SNMP. Instead of reading raw ASN.1 text by hand, a MIB browser renders each object's name, OID, syntax, and description in a searchable, navigable form. MIB Viewer does this entirely in your browser, for MIBs already in its database or ones you upload yourself.

What is an OID lookup tool?

An OID lookup tool resolves an OID — a dotted numeric address like 1.3.6.1.2.1.1.1 — to the object it identifies, and vice versa: name to OID. MIB Viewer's OID search does both, and shows the object's full definition and its exact position in the MIB tree, not just a bare name.

Is MIB Viewer free to use?

Yes — browsing MIBs, searching OIDs, uploading your own MIB files, and reading the guides are all free, with no account required. MIB Viewer Desktop is a separate paid native app for people who want MIBs saved locally across sessions and offline access, but the web tool itself has no paywall.

Can I look up a MIB from a specific vendor?

Yes — use Search Vendor MIBs under Tools to list every MIB a given vendor has published, searchable by vendor name or IANA enterprise number.

Guides & Resources

Beyond the lookup tool, the site includes practical, hands-on guides and reference material — installing and using the standard SNMP tools, configuring SNMP on specific vendor hardware, monitoring DOCSIS cable modems and CMTSs, and working through the errors people run into most. A few places to start:

SNMP Fundamentals

The manager/agent model, MIBs and OIDs, versions, access control, and all six core operations in one place.

Using net-snmp

Installing the standard Linux SNMP toolkit, the client commands, running an agent, receiving traps, and loading MIBs into each one.

SNMPv3

A complete deep dive into SNMPv3's security model — USM, authentication and privacy protocols, engine IDs, VACM, and configuring a real user.

SNMP vs Telemetry

How SNMP's pull-based polling compares to push-based streaming telemetry (gNMI, NETCONF/YANG) — architecture, tradeoffs, and when to use each.

Understanding MIBs

How objects, tables, and notifications are actually defined, and how vendor-specific numbering keeps everyone's private OIDs from colliding.

Troubleshooting SNMP

From a plain timeout to SNMPv3 auth failures to a MIB that won't parse — working through what actually went wrong and why.

Searching OIDs

Starting from a real device's sysObjectID, searching by name or number, and filtering a MIB down to just the objects you need.

Uploading MIBs

Parsing your own MIB file in-browser, what happens to it afterward, and troubleshooting a file that won't load.

Bulk Translate

Translating a whole batch of OIDs or object names at once — pasted in or uploaded — useful for trap logs and SNMP walk output.

SNMP History

From SNMPv1 in 1988 through v2c and v3, and how newer approaches like streaming telemetry fit alongside it today.

Get started

Search for a MIB or OID above, or pick one from the list on the left.

Have your own MIB file? Drop it on the upload zone in the sidebar (or click to browse) to parse and explore it right away. It's sent to the server to be parsed and isn't added to the shared, publicly searchable database — it stays scoped to your own session in the tree on the left.

New here? The Guides menu above is the place to start if you want the concepts explained rather than just looked up.

ARICENT-DHCP-SERVER-MIB

81 objects

The DHCP Server MIB is placed under futuresoftware MIB branch.

Imported Objects

SNMPv2-SMI	Counter32 enterprises Integer32 IpAddress MODULE-IDENTITY NOTIFICATION-TYPE OBJECT-TYPE TimeTicks Unsigned32
SNMPv2-TC	DisplayString RowStatus TruthValue

OID	Name	Access	Status	Description
1.3.6.1.4.1.2076.84	IdentityfutureDhcpSrvMIB			The DHCP Server MIB is placed under futuresoftware MIB branch.
1.3.6.1.4.1.2076.84.1	NodedhcpSrvConfig
1.3.6.1.4.1.2076.84.1.1	ScalardhcpSrvEnable	read-write	current	This object is used for enabling or disabling DHCP server in the router.
1.3.6.1.4.1.2076.84.1.2	ScalardhcpSrvDebugLevel	read-write	current	The mask which is used to enable selective debug levels in DHCP server module.Each allowed BIT in the integer, represents a particular level of Trace.The mapin…
1.3.6.1.4.1.2076.84.1.3	ScalardhcpSrvOfferReuseTimeOut	read-write	current	Offer Reuse Timer Value (in seconds). This timer value represents the amount of time the DHCP server entity would wait for the DHCP REQUEST from the client, be…
1.3.6.1.4.1.2076.84.1.4	ScalardhcpSrvIcmpEchoEnable	read-write	current	Indicates whether ICMP echo is enabled for the DHCP server entity. This object controls the server to probe for the IP address before allocating the IP address…
1.3.6.1.4.1.2076.84.1.5	ScalardhcpSrvBootServerAddress	read-write	current	This object specifies the IP address of next server to use in bootstrap.
1.3.6.1.4.1.2076.84.1.6	ScalardhcpSrvDefBootFilename	read-write	current	This object specifies the default Boot file name, null terminated string.
1.3.6.1.4.1.2076.84.1.7	ScalardhcpSrvBootpClientsSupported	read-write	current	This object specifies whether bootp clients are suppored by the dhcp server.
1.3.6.1.4.1.2076.84.1.8	ScalardhcpSrvAutomaticBootpEnabled	read-write	current	This object specifies whether automatic address allocation to bootp clients is supported.
1.3.6.1.4.1.2076.84.1.9	TabledhcpSrvSubnetPoolConfigTable	not-accessible	current	This table contains the subnet specific IpAddress Range that are to be used by the server on response to a DHCP DISCOVER message in a DHCP OFFER message.
1.3.6.1.4.1.2076.84.1.9.1	RowdhcpSrvSubnetPoolConfigEntry	not-accessible	current	This object specifies the entries of the dhcpSrvSubnetPoolConfigTable.
1.3.6.1.4.1.2076.84.1.9.1.1	ColumndhcpSrvSubnetPoolIndex	not-accessible	current	This object specifies the Index of one entry in dhcpSrvSubnetPoolConfigTable.
1.3.6.1.4.1.2076.84.1.9.1.2	ColumndhcpSrvSubnetSubnet	read-write	current	This object specifies the subnet corresponds to this Entry.
1.3.6.1.4.1.2076.84.1.9.1.3	ColumndhcpSrvSubnetPortNumber	read-write	current	This object specifies the Port number of this subnet.
1.3.6.1.4.1.2076.84.1.9.1.4	ColumndhcpSrvSubnetMask	read-write	current	This object specifies the Netmask of this subnet entry.
1.3.6.1.4.1.2076.84.1.9.1.5	ColumndhcpSrvSubnetStartIpAddress	read-write	current	This object specifies the IP Address of the first address in this range.
1.3.6.1.4.1.2076.84.1.9.1.6	ColumndhcpSrvSubnetEndIpAddress	read-write	current	This object specifies the IP Address of the last address in this range.
1.3.6.1.4.1.2076.84.1.9.1.7	ColumndhcpSrvSubnetLeaseTime	read-write	current	This object specifies the lease time in seconds for an IpAddress in this range.
1.3.6.1.4.1.2076.84.1.9.1.8	ColumndhcpSrvSubnetPoolName	read-write	current	This object specifies the name for the subnet pool.Null terminated string.
1.3.6.1.4.1.2076.84.1.9.1.9	ColumndhcpSrvSubnetUtlThreshold	read-write	current	This object specifies the utilization threshold for this pool in percentage value. If the pool utilization is above this value, a trap will be sent. 0 represen…
1.3.6.1.4.1.2076.84.1.9.1.10	ColumndhcpSrvSubnetPoolRowStatus	read-write	current	This object specifies the RowStatus of this entry.
1.3.6.1.4.1.2076.84.1.10	TabledhcpSrvExcludeIpAddressTable	not-accessible	current	This table contains IpAddresses,which should not be allocated to any dhcp clients.
1.3.6.1.4.1.2076.84.1.10.1	RowdhcpSrvExcludeIpAddressEntry	not-accessible	current
1.3.6.1.4.1.2076.84.1.10.1.1	ColumndhcpSrvExcludeStartIpAddress	not-accessible	current	This object specifies the IP Address of the first address in this range.
1.3.6.1.4.1.2076.84.1.10.1.2	ColumndhcpSrvExcludeEndIpAddress	read-write	current	This object specifies the IP Address of the last address in this range.Default value is same as dhcpSrvExcludeStartIpAddress.
1.3.6.1.4.1.2076.84.1.10.1.3	ColumndhcpSrvExcludeAddressRowStatus	read-write	current	This object specifies the RowStatus of this entry.
1.3.6.1.4.1.2076.84.1.11	TabledhcpSrvGblOptTable	not-accessible	current	This table contains the global options that are to be used by the server on response to a DHCP DISCOVER message in a DHCP OFFER message. This Table would conta…
1.3.6.1.4.1.2076.84.1.11.1	RowdhcpSrvGblOptEntry	not-accessible	current	This object specifies the various option objects common to all DHCP offer messages.
1.3.6.1.4.1.2076.84.1.11.1.1	ColumndhcpSrvGblOptType	not-accessible	current	This object is used to identify the option, this is the tag octet of the DHCP option. This option is the index in the dhcpSrvGblOptTable.
1.3.6.1.4.1.2076.84.1.11.1.2	ColumndhcpSrvGblOptLen	read-write	current	This object identifies the length of the option indicated by the option type. This length does not include the two octets specifiying the tag and length.
1.3.6.1.4.1.2076.84.1.11.1.3	ColumndhcpSrvGblOptVal	read-write	current	This object identifies the octets of data, of length specified by dhcpSrvGblOptLen for that entry.
1.3.6.1.4.1.2076.84.1.11.1.4	ColumndhcpSrvGblOptRowStatus	read-write	current	This object specifies the Row status of this entry.
1.3.6.1.4.1.2076.84.1.12	TabledhcpSrvSubnetOptTable	not-accessible	current	This table contains the subnet specific options that are to be used by the server on response to a DHCP DISCOVER message in a DHCP OFFER message.
1.3.6.1.4.1.2076.84.1.12.1	RowdhcpSrvSubnetOptEntry	not-accessible	current	The various option objects common to all DHCP offer messages.
1.3.6.1.4.1.2076.84.1.12.1.1	ColumndhcpSrvSubnetOptType	not-accessible	current	This object is used to identify the option, this is the tag octet of the DHCP option. This option is the index in the dhcpSrvSubnetOptTable.
1.3.6.1.4.1.2076.84.1.12.1.2	ColumndhcpSrvSubnetOptLen	read-write	current	This object is used to identify the length of the option indicated by the option type. This length does not include the two octets specifiying the tag and leng…
1.3.6.1.4.1.2076.84.1.12.1.3	ColumndhcpSrvSubnetOptVal	read-write	current	This object is used to identify the octets of data, of length specified by dhcpSrvSubnetOptLen for that entry.
1.3.6.1.4.1.2076.84.1.12.1.4	ColumndhcpSrvSubnetOptRowStatus	read-write	current	This object specifies the Row status of this entry.
1.3.6.1.4.1.2076.84.1.13	TabledhcpSrvHostOptTable	not-accessible	current	This table contains the host specific options that are to be used by the server on response to a DHCP DISCOVER message in a DHCP OFFER message.
1.3.6.1.4.1.2076.84.1.13.1	RowdhcpSrvHostOptEntry	not-accessible	current	The various option objects common to all DHCP offer messages.
1.3.6.1.4.1.2076.84.1.13.1.1	ColumndhcpSrvHostType	not-accessible	current	This object is used to identify the type of host identifier, whether this host specific entry is based on hardware or non-hardware of the client. This option i…
1.3.6.1.4.1.2076.84.1.13.1.2	ColumndhcpSrvHostId	not-accessible	current	This object is used to identify the host.This id is an index to this table.
1.3.6.1.4.1.2076.84.1.13.1.3	ColumndhcpSrvHostOptType	not-accessible	current	This object is used to identify the option, this is the tag octet of the DHCP option. This option is the index in the dhcpSrvSubnetOptTable.
1.3.6.1.4.1.2076.84.1.13.1.4	ColumndhcpSrvHostOptLen	read-write	current	This object is used to identify the length of the option indicated by the option type. This length does not include the two octets specifiying the tag and leng…
1.3.6.1.4.1.2076.84.1.13.1.5	ColumndhcpSrvHostOptVal	read-write	current	This object is used to identify the octets of data, of length specified by dhcpSrvSubnetOptLen for that entry.
1.3.6.1.4.1.2076.84.1.13.1.6	ColumndhcpSrvHostOptRowStatus	read-write	current	This object specifies the Row status of this entry.
1.3.6.1.4.1.2076.84.1.14	TabledhcpSrvHostConfigTable	not-accessible	current	This table contains the IpAddress for specific hosts.
1.3.6.1.4.1.2076.84.1.14.1	RowdhcpSrvHostConfigEntry	not-accessible	current
1.3.6.1.4.1.2076.84.1.14.1.1	ColumndhcpSrvHostIpAddress	read-write	current	This object specifies the IpAddress configured for this client.
1.3.6.1.4.1.2076.84.1.14.1.2	ColumndhcpSrvHostPoolName	read-write	current	This object is used to identify the subnet pool.
1.3.6.1.4.1.2076.84.1.14.1.3	ColumndhcpSrvHostBootFileName	read-write	current	This object specifies the Boot file name, null terminated string.
1.3.6.1.4.1.2076.84.1.14.1.4	ColumndhcpSrvHostBootServerAddress	read-write	current	This object specifies the IP address of next server to use in bootstrap.
1.3.6.1.4.1.2076.84.1.14.1.5	ColumndhcpSrvHostConfigRowStatus	read-write	current	This object specifies the RowStatus of this entry.
1.3.6.1.4.1.2076.84.2	NodedhcpSrvBinding
1.3.6.1.4.1.2076.84.2.1	TabledhcpSrvBindingTable	not-accessible	current	This table contains binding informations for the client.
1.3.6.1.4.1.2076.84.2.1.1	RowdhcpSrvBindingEntry	not-accessible	current
1.3.6.1.4.1.2076.84.2.1.1.1	ColumndhcpSrvBindIpAddress	not-accessible	current	This object specifies the IpAddress associated with the binding.
1.3.6.1.4.1.2076.84.2.1.1.2	ColumndhcpSrvBindHwType	read-only	current	This object specifies the Hardware address type of the binding. Value 0, Indicates client identifier.
1.3.6.1.4.1.2076.84.2.1.1.3	ColumndhcpSrvBindHwAddress	read-only	current	This object specifies the Hardware address of the binding.
1.3.6.1.4.1.2076.84.2.1.1.4	ColumndhcpSrvBindExpireTime	read-only	current	This object specifies the time remaining for the binding. Negative Values indicate already expired binding.
1.3.6.1.4.1.2076.84.2.1.1.5	ColumndhcpSrvBindAllocMethod	read-only	current	This object specifies the binding is for statically assigned ip-address or automatically assigned from the poll.
1.3.6.1.4.1.2076.84.2.1.1.6	ColumndhcpSrvBindState	read-only	current	This object specifies the state of the binding. In offered state offer has been sent, but no req has been received from the client.In assigned state the addres…
1.3.6.1.4.1.2076.84.2.1.1.7	ColumndhcpSrvBindXid	read-only	current	This object specifies the Transaction ID, a random number chosen by the client, used by the client and server to associate messages and responses between a cli…
1.3.6.1.4.1.2076.84.2.1.1.8	ColumndhcpSrvBindEntryStatus	read-write	current	This object specifies the binding entry status. Only DESTROY (6) is the allowed configurable value. If the entry is present value will be ACTIVE.
1.3.6.1.4.1.2076.84.3	NodedhcpSrvCounters
1.3.6.1.4.1.2076.84.3.1	ScalardhcpCountDiscovers	read-only	current	This object specifies the number of DHCPDISCOVER (option 53 with value 1) packets received.
1.3.6.1.4.1.2076.84.3.2	ScalardhcpCountRequests	read-only	current	This object specifies the number of DHCPREQUEST (option 53 with value 3) packets received.
1.3.6.1.4.1.2076.84.3.3	ScalardhcpCountReleases	read-only	current	This object specifies the number of DHCPRELEASE (option 53 with value 7) packets received.
1.3.6.1.4.1.2076.84.3.4	ScalardhcpCountDeclines	read-only	current	This object specifies the number of DHCPDECLINE (option 53 with value 4) packets received.
1.3.6.1.4.1.2076.84.3.5	ScalardhcpCountInforms	read-only	current	This object specifies the number of DHCPINFORM (option 53 with value 8) packets received.
1.3.6.1.4.1.2076.84.3.6	ScalardhcpCountInvalids	read-only	current	This object specifies the number of DHCP packets received whose DHCP message type (i.e., option number 53) is not understood or handled by the server.
1.3.6.1.4.1.2076.84.3.7	ScalardhcpCountOffers	read-only	current	This object specifies the number of DHCPOFFER (option 53 with value 2) packets sent.
1.3.6.1.4.1.2076.84.3.8	ScalardhcpCountAcks	read-only	current	This object specifies the number of DHCPACK (option 53 with value 5) packets sent.
1.3.6.1.4.1.2076.84.3.9	ScalardhcpCountNacks	read-only	current	This object specifies the number of DHCPNACK (option 53 with value 6) packets sent.
1.3.6.1.4.1.2076.84.3.10	ScalardhcpCountDroppedUnknownClient	read-only	current	This object specifies the number of DHCP packets dropped due to the server not recognizing or not providing service to the client-id and/or hardware address re…
1.3.6.1.4.1.2076.84.3.11	ScalardhcpCountDroppedNotServingSubnet	read-only	current	This object specifies the number of DHCP packets dropped due to the server not being configured or not otherwise able to serve addresses on the subnet from whi…
1.3.6.1.4.1.2076.84.3.12	ScalardhcpCountResetCounters	read-write	current	This object is used to reset the statistics counters. When set to set(1), statistics counters will be cleared. When set to notset(2), no action will take place.
1.3.6.1.4.1.2076.84.4	NodedhcpSrvTrapGroup
1.3.6.1.4.1.2076.84.4.0	NodedhcpSrvTraps
1.3.6.1.4.1.2076.84.4.0.1	NotificationdhcpSrvPoolUtlTrap		current	This object specifies the generated value when pool utilization exceeds the threshold value.

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ARICENT-DHCP-SERVER-MIB

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