IP-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsIP-MIB

Organization: IETF IPv6 MIB Revision Team

Last Updated: 2006-02-02

Category: IP and Core Protocols

Description: Defines managed objects for managing implementations of the Internet Protocol (IP), including IP address configuration, datagram delivery, receipt, and forwarding counters.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring IP-MIB with a free 30-day trial of IPNetwork Monitor.

What Is IP-MIB?

IP-MIB is the IETF standards-track MIB (RFC 4293) for managing implementations of the Internet Protocol on any networked device, covering both IPv4 and IPv6 addressing, datagram forwarding behavior, and per-interface IP configuration, independent of route-table management (handled by a separate MIB). It exposes configuration objects (ipForwarding, ipDefaultTTL, ipReasmTimeout, ipv6IpForwarding, ipv6IpDefaultHopLimit), a per-interface IPv4 address/status table (ipv4InterfaceTable/ipv4InterfaceEntry with ipv4InterfaceIfIndex, ipv4InterfaceEnableStatus, ipv4InterfaceRetransmitTime, ipv4InterfaceReasmMaxSize), and traffic statistics/ICMP counters (ipTrafficStats, icmp). In monitoring terms it is used mainly for network-layer performance and fault visibility: whether IP forwarding is enabled, whether an IPv4 interface is administratively/operationally up, fragmentation/reassembly behavior, and traffic/error counters that reveal packet loss, discards, or misconfiguration — it is not oriented toward chassis hardware sensors like temperature or fan status. It is commonly deployed alongside IF-MIB (which supplies the ifIndex values referenced by ipv4InterfaceIfIndex) and works together with route-table MIBs like IP-FORWARD-MIB. It is deployed on essentially any IP-capable networked device — routers, switches, servers, and hosts — as one of the most universally implemented standard IP MIB modules in the industry.

IPNetwork Monitor allows you to monitor SNMP objects defined in IP-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • vendor-neutral, standards-based MIB, applies to any IP-capable device (routers, switches, servers, hosts)

Monitoring Examples

An admin would poll ipv4InterfaceEnableStatus in the ipv4InterfaceTable (indexed by ipv4InterfaceIfIndex, tied to the corresponding ifTable entry) to confirm an IP interface is enabled, and check ipForwarding/ipv6IpForwarding to verify the device's routing posture. Watching ipTrafficStats counters over time reveals rising discard or error rates that indicate network-layer problems, while icmp counters expose unreachable or timeout conditions. A change in ipDefaultTTL or ipReasmTimeout would flag an unexpected configuration drift on the device.

What Can Be Monitored

  • IP forwarding status (v4/v6)
  • IPv4 interface enable/operational status
  • default TTL / hop limit
  • reassembly timeout and max size
  • IP traffic statistics
  • ICMP error counters
Imported Objects

From IF-MIB

InterfaceIndex

From INET-ADDRESS-MIB

InetAddress
InetAddressPrefixLength
InetAddressType
InetVersion
InetZoneIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32
mib-2
zeroDotZero

From SNMPv2-TC

PhysAddress
RowPointer
RowStatus
StorageType
TEXTUAL-CONVENTION
TestAndIncr
TimeStamp
TruthValue
OIDs

RFC description

Manages IP and ICMP protocol objects including IPv4/IPv6 addressing, interfaces, and routing; RFC 4293.

Start monitoring Vendor-neutral IETF standard, RFC 4293 (any IP-capable device) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

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