IB-IF-MIB

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Organization: IETF IP over IB (IPOIB) Working Group

Last Updated: 2006-06-27

Category: Network Interfaces, Standard: IETF

Description: IETF MIB for InfiniBand network interfaces providing IP-over-InfiniBand (IPoIB) interface statistics and management objects.

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What Is IB-IF-MIB?

IB-IF-MIB is an IETF standards-track MIB for managing InfiniBand network interfaces, specifically covering IP-over-InfiniBand (IPoIB) interface statistics and configuration, extending the general ifTable framework to InfiniBand-specific link characteristics. It exposes interface-level identification and statistics analogous to standard IF-MIB counters but tailored to InfiniBand fabrics, such as link state, partition/GID information, and IPoIB-specific traffic counters. Its monitoring role centers on interface/link health and throughput: it lets an operator confirm an InfiniBand HCA (Host Channel Adapter) interface is up, correctly joined to its IB partition, and passing expected traffic volumes, essential in high-performance computing and storage fabrics where InfiniBand link faults directly impact cluster performance. As an IETF module it explicitly builds on and extends the standard IF-MIB (RFC 2863) interface model to InfiniBand-specific semantics. It is deployed on servers, storage arrays, and switches connected to InfiniBand fabrics, typically in HPC clusters, SANs, and RDMA-based data-center interconnects. Engineers implementing or auditing this functionality typically reference the IB-IF-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in IB-IF-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 IETF MIB, not tied to a specific manufacturer
servers, storage systems, and switches with InfiniBand/IPoIB interfaces

Monitoring Examples

No concrete sample_objects were provided for this module, so specific table/column names cannot be confirmed; consistent with its module description, a realistic use would be polling the IPoIB interface table (paralleling ifTable/ifXTable conventions) for link operational status and traffic counters on each InfiniBand HCA port to detect a down or degraded link in a compute cluster. A mismatch between expected and actual partition/GID membership on an interface would similarly reveal a fabric configuration problem preventing that node from communicating over the InfiniBand network.

What Can Be Monitored

InfiniBand interface operational status
IPoIB interface traffic statistics
interface partition/GID membership

Imported Objects

From IB-TC-MIB

IbIpoibClientIdentifier
IbVirtualLane
infinibandMIB	OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

OIDs

OID symbolic	OID numeric	Type	Access	Description
ibIfMIB	1.3.6.1.3.117.2			Copyright (C) The Internet Society (2006). The initial version of this MIB module was published in RFC XXXX; for full legal notices see the RFC itself. Supplementary information may be available on http://www.ietf.org/copyrights/ianamib.html. This module contains managed object definitions for managing InfiniBand interfaces.
ibIfObjects	1.3.6.1.3.117.2.1
ibIfPortStatTable	1.3.6.1.3.117.2.1.1		not-accessible	This table provides detail statistics for all InfiniBand interfaces attached to a particular system. There will be one row in this table for each InfiniBand interface in the system.
ibIfPortStatEntry	1.3.6.1.3.117.2.1.1.1		not-accessible	Statistics for a particular interface to an InfiniBand medium.
NUM ibIfPortStatIfIndex	1.3.6.1.3.117.2.1.1.1.1	InterfaceIndex	not-accessible	The ifIndex value of the InfiniBand interface to which these port statistics apply.
C32 ibIfPortSymbolErrs	1.3.6.1.3.117.2.1.1.1.2	Counter32	read-only	Total number of minor link errors detected on one or more physical lanes.
C32 ibIfPortLinkErrRecovery	1.3.6.1.3.117.2.1.1.1.3	Counter32	read-only	Total number of times the Port Training state machine has successfully completed the link error recovery process.
C32 ibIfPortLinkDowned	1.3.6.1.3.117.2.1.1.1.4	Counter32	read-only	Total number of times the Port Training state machine has failed the link error recovery process and downed the link.
C32 ibIfPortStatLocalPhyErrs	1.3.6.1.3.117.2.1.1.1.5	Counter32	read-only	Total number of packets received on the port that contain local physical errors (ICRC, VCRC, FCCRC, and all physical errors that cause entry into the BAD PACKET or BAD PACKET DISCARD states of the packet receiver state machine).
C32 ibIfPortStatMalPktErrs	1.3.6.1.3.117.2.1.1.1.6	Counter32	read-only	Total number of packets received on the port that contain malformed packet errors - data packets: LVer, length, VL - link packets: operand, length, VL
C32 ibIfPortStatRcvRemPhyErrs	1.3.6.1.3.117.2.1.1.1.7	Counter32	read-only	Total number of packets marked with the EBP delimiter received on the port.
C32 ibIfPortStatRcvConstrErrs	1.3.6.1.3.117.2.1.1.1.8	Counter32	read-only	Total number of packets received on the port that are discarded for the following reasons: - FilterRawInbound is true and packet is raw - PartitionEnforcementInbound is true and packet fails partition key check or IP version check.
C32 ibIfPortStatInactDiscards	1.3.6.1.3.117.2.1.1.1.9	Counter32	read-only	Total number of outbound packets discarded by the port because it is not in the active state.
C32 ibIfPortStatNeighMTUDiscards	1.3.6.1.3.117.2.1.1.1.10	Counter32	read-only	Total number of outbound packets discarded by the port because packet length exceeded the neighbor MTU.
C32 ibIfPortStatSwLifetimeDiscards	1.3.6.1.3.117.2.1.1.1.11	Counter32	read-only	Total number of outbound packets discarded by the port because the Switch Lifetime Limit was exceeded. Note this object is only incremented for switches.
C32 ibIfPortStatHOQLifetimeDiscards	1.3.6.1.3.117.2.1.1.1.12	Counter32	read-only	Total number of outbound packets discarded by the port because the switch HOQ lifetime was exceeded. Note this object is only incremented for switches.
C32 ibIfPortStatLinkIntergrityErrs	1.3.6.1.3.117.2.1.1.1.13	Counter32	read-only	The number of times that the count of local physical errors exceeded the LocalPhyErrors threshold.
C32 ibIfPortStatExcBufOverrunErrs	1.3.6.1.3.117.2.1.1.1.14	Counter32	read-only	The number of times that OverrunErrors consecutive flow control update periods occurred with at least one overrun error in each period.
C32 ibIfPortStatVL15Dropped	1.3.6.1.3.117.2.1.1.1.15	Counter32	read-only	Number of incoming VL15 packets dropped due to resource limitations on the selected port (e.g., lack of buffers).
ibIfVLTrafficTable	1.3.6.1.3.117.2.1.2		not-accessible	This table provides traffic statistics for all virtual lanes that are configured on an InfiniBand interface. There will always be at least one data virtual lane in the range VL0-VL14 configured on an interface, as well as control channel VL15. Configuration of what VLs are available on a particular interface is done by IBA native management.
ibIfVLTrafficEntry	1.3.6.1.3.117.2.1.2.1		not-accessible	Information about a particular virtual lane (VL).
NUM ibIfVLTrafficIfIndex	1.3.6.1.3.117.2.1.2.1.1	InterfaceIndex	not-accessible	The ifIndex value of the InfiniBand interface to which these virtual lane (VL) traffic statistics apply.
IBV ibIfVLIndex	1.3.6.1.3.117.2.1.2.1.2	IbVirtualLane	not-accessible	Identifies what Virtual Lane (VL) instance is being addressed.
C64 ibIfVLOutOctets	1.3.6.1.3.117.2.1.2.1.3	Counter64	read-only	The number of octets transmitted in valid data packets on this interface, including the START and END delimiters and the VCRC for this VL.
C64 ibIfVLOutPkts	1.3.6.1.3.117.2.1.2.1.4	Counter64	read-only	The number of packets successfully sent on this VL.
C64 ibIfVLInOctets	1.3.6.1.3.117.2.1.2.1.5	Counter64	read-only	The number of octets in valid data packets received on this interface, including the START and END delimiters and the VCRC for this VL.
C64 ibIfVLInPkts	1.3.6.1.3.117.2.1.2.1.6	Counter64	read-only	The number of packets successfully received on this VL. This does not include link packets, since link packets are generated by the interface layer, and are not passed from any higher layer protocol.
ibIpoibLinkLayerAddrTable	1.3.6.1.3.117.2.1.3		not-accessible	This table contains information about all IPOIB link layer addresses associated with this InfiniBand interface (port).
ibIpoibLinkLayerAddrEntry	1.3.6.1.3.117.2.1.3.1		not-accessible	Information about specific IPOIB link layer addresses associated with this InfiniBand interface (port).
NUM ibIpoibLinkLayerIfIndex	1.3.6.1.3.117.2.1.3.1.1	InterfaceIndex	not-accessible	The ifIndex of the IPOIB InfiniBand interface (port).
U32 ibIpoibLinkLayerIndex	1.3.6.1.3.117.2.1.3.1.2	Unsigned32	not-accessible	Index of the IPOIB Link Layer address in the table.
OID ibIpoibLinkLayerAddr	1.3.6.1.3.117.2.1.3.1.3	IbIpoibClientIdentifier	read-only	A Client Identifier for this interface (port). An implementation may associate multiple IPOIB interfaces on the same port. It is up to the implementation to ensure a unique Client Identifier when multiple IPOIB interfaces are defined over the same port and same GID. A unique, invariant interface-id value must be included in addition to the GID within the Client Identifier definition to achieve this. Note: a port may also be associated with multiple GIDs. Therefore, multiple IPOIB interfaces may exist on the same port while using a different GID from among the GIDs associated with the port. In either case, the IbIpoibLinkLayerAddr MUST be unique.
ibIfNotifications	1.3.6.1.3.117.2.2
ibIfConformance	1.3.6.1.3.117.2.3
ibIfCompliances	1.3.6.1.3.117.2.3.1
ibIfBasicCompliance	1.3.6.1.3.117.2.3.1.1			The basic implementation requirements for managed network entities that have InfiniBand network interfaces.
ibIfFullCompliance	1.3.6.1.3.117.2.3.1.2			The full implementation requirements for managed network entities that have InfiniBand network interfaces.
ibIfMIBGroups	1.3.6.1.3.117.2.3.2
ibIfStatMandatoryPortStatGroup	1.3.6.1.3.117.2.3.2.1			Detailed error statistics group for mandatory InfiniBand-based Port Statistics counters.
ibIfStatOptionalPortStatGroup	1.3.6.1.3.117.2.3.2.2			Detailed error statistics group for optional InfiniBand-based Port Statistics counters.
ibIfVLTrafficGroup	1.3.6.1.3.117.2.3.2.3			Detailed per VL traffic statistics group.
ibIpoibLinkAddrGroup	1.3.6.1.3.117.2.3.2.4			Detailed per port IPOIB link layer address group.

RFC description

InfiniBand interface statistics and port management for IP-over-InfiniBand (IPoIB) networks.

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Download IB-IF-MIB

What Is IB-IF-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description