MELLANOX-IF-VPI-MIB

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Organization: Mellanox Technologies, Inc.

Last Updated: 2017-07-26

Category: Storage

Description: Manages Virtual Protocol Interconnect (VPI) port configuration on Mellanox InfiniBand adapters.

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What Is MELLANOX-IF-VPI-MIB?

MELLANOX-IF-VPI-MIB is a Mellanox Technologies enterprise MIB that manages Virtual Protocol Interconnect (VPI) ports, adapter or switch ports that can operate as either InfiniBand or Ethernet. It exposes per-port InfiniBand physical and logical link state, port GUID, error counters such as symbol errors and transmit-wait time, admin speed, and IB subnet name/prefix. It is used for interface performance and fault monitoring: a port whose logical state fails to reach an active state, or whose symbol-error or transmit-wait counters climb, points to a cabling, subnet-manager, or fabric-congestion problem. It extends the standard IF-MIB interface model with InfiniBand-subnet-specific attributes drawn from the InfiniBand architecture specification. It is deployed in HPC and data center clusters using Mellanox VPI adapters and switches that can flexibly run IB or Ethernet fabrics. Engineers can download the MELLANOX-IF-VPI-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in MELLANOX-IF-VPI-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

Mellanox VPI network adapter/switch port

Monitoring Examples

Polling mellanoxIfVPITable by mellanoxIfVPIIndex reads mellanoxIfVPIIbPortPhysicalState and IbPortLogicalState; a port stuck below an active logical state signals a subnet manager or cabling issue. mellanoxIfVPISymbolErrorCounter and mellanoxIfVPIPortXmitWait rising over time indicate physical-layer errors or fabric congestion. mellanoxIfVPISubnetPrefix and SubnetName confirm which IB subnet the port has joined.

What Can Be Monitored

IB port physical state
IB port logical state
symbol error counter
port transmit-wait counter
port admin speed
subnet name/prefix

Imported Objects

From MELLANOX-SMI-MIB

mellanoxIfVPI

OBJECT-IDENTITY

From SNMPv2-SMI

Counter64
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using mellanoxIfVPIPortXmitWait OID:

Select a Mellanox VPI network adapter/switch port (InfiniBand/Ethernet dual-mode) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type mellanoxIfVPIPortXmitWait into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports a VPI counter. The number of ticks during which the port selected by PortSelect had data to transmit but no data was sent during the entire tick either because of insufficient credits or because of lack of arbitration. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
mellanoxIfVPIMib	1.3.6.1.4.1.33049.3.1			Mellanox VPI Interface MIB
mellanoxIfVPITable	1.3.6.1.4.1.33049.3.1.1		not-accessible
mellanoxIfVPIEntry	1.3.6.1.4.1.33049.3.1.1.1		not-accessible
I32 mellanoxIfVPIIndex	1.3.6.1.4.1.33049.3.1.1.1.1	Integer32	read-only	The index of this table (taken from System II ifIndex)
INT mellanoxIfVPIIbPortPhysicalState	1.3.6.1.4.1.33049.3.1.1.1.2	INTEGER	read-only	Infiniband Port physical state
INT mellanoxIfVPIIbPortLogicalState	1.3.6.1.4.1.33049.3.1.1.1.3	INTEGER	read-only	Infiniband Port logical state
STR mellanoxIfVPIIbPortGuid	1.3.6.1.4.1.33049.3.1.1.1.4	DisplayString	read-only	Infiniband PortGuid (64 bits length) - Value shall differ for each end port on a CA or router , but the same for all ports of a switch.
C64 mellanoxIfVPIPortXmitWaitEx	1.3.6.1.4.1.33049.3.1.1.1.5	Counter64	read-only	A VPI counter. The number of ticks during which the port selected by PortSelect had data to transmit but no data was sent during the entire tick either because of insufficient credits or because of lack of arbitration.
C64 mellanoxIfVPISymbolErrorCounter	1.3.6.1.4.1.33049.3.1.1.1.6	Counter64	read-only	A VPI counter Total number of minor link errors detected on one or more physical lanes.
G32 mellanoxIfVPIPortAdminSpeed	1.3.6.1.4.1.33049.3.1.1.1.7	Gauge32	read-only	The interface's configured bandwidth in units of 1,000,000 bits per second. This value is represented in a similar way to the ifHighSpeed column in IF-MIB.
STR mellanoxIfVPISubnetName	1.3.6.1.4.1.33049.3.1.1.1.8	DisplayString	read-only	This field will only be used in IB router systems. For mapped IB ports, this field will display the name of the subnet the port is mapped to. For L3 IB interfaces: the name assigned to them. In other cases: An empty string will be displayed
STR mellanoxIfVPISubnetPrefix	1.3.6.1.4.1.33049.3.1.1.1.9	DisplayString	read-only	This field will only be used in IB systems. For L2 IB ports: the prefix of the subnet the port is mapped to. For L3 IB interfaces: the prefix assigned to them. In other cases: An empty string will be displayed.
I32 mellanoxIfVPIIbLocalIdentifier	1.3.6.1.4.1.33049.3.1.1.1.10	Integer32	read-only	This field will only be used in L3 interfaces on IB router systems. For L3 IB interfaces, this field will display the local identifier (lid) of the subnet. In other cases: 0 will be displayed.
C64 mellanoxIfVPI64bytePkts	1.3.6.1.4.1.33049.3.1.1.1.11	Counter64	read-only	Total number of packets with a length of 64 bytes.
C64 mellanoxIfVPI65to127bytePkts	1.3.6.1.4.1.33049.3.1.1.1.12	Counter64	read-only	Total number of packets with a length between 65 and 127 bytes.
C64 mellanoxIfVPI128to255bytePkts	1.3.6.1.4.1.33049.3.1.1.1.13	Counter64	read-only	Total number of packets with a length between 128 and 255 bytes.
C64 mellanoxIfVPI256to511bytePkts	1.3.6.1.4.1.33049.3.1.1.1.14	Counter64	read-only	Total number of packets with a length between 256 and 511 bytes.
C64 mellanoxIfVPI512to1023bytePkts	1.3.6.1.4.1.33049.3.1.1.1.15	Counter64	read-only	Total number of packets with a length between 512 and 1023 bytes.
C64 mellanoxIfVPI1024to1518bytePkts	1.3.6.1.4.1.33049.3.1.1.1.16	Counter64	read-only	Total number of packets with a length between 1024 and 1518 bytes.
C64 mellanoxIfVPIJumboPkts	1.3.6.1.4.1.33049.3.1.1.1.17	Counter64	read-only	Total number of Jumbo-sized packets (bigger than 1518 bytes).
C64 mellanoxIfVPIUndersizedPkts	1.3.6.1.4.1.33049.3.1.1.1.18	Counter64	read-only	Total number of undersized packets (smaller than 64 bytes).
C64 mellanoxIfVPIOversizedPkts	1.3.6.1.4.1.33049.3.1.1.1.19	Counter64	read-only	Total number of oversized packets (bigger than 9216 bytes).
C64 mellanoxIfVPIUnknownControlOpcode	1.3.6.1.4.1.33049.3.1.1.1.20	Counter64	read-only	Total number of unknown control opcodes.
C64 mellanoxIfVPIFCSErrors	1.3.6.1.4.1.33049.3.1.1.1.21	Counter64	read-only	Total number of Frame Check Sequence errors.

RFC description

Manages Mellanox VPI (Virtual Protocol Interface) port status including InfiniBand and Ethernet physical/logical states, counters, and speeds.

Start monitoring Mellanox VPI network adapter/switch port (InfiniBand/Ethernet dual-mode) 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.

Download MELLANOX-IF-VPI-MIB