ARISTA-IF-MIB

All MIBs › ARISTA-IF-MIB

Organization: Arista Networks, Inc.

Last Updated: 2014-10-09

Category: Vendor: Arista

Description: Arista EOS interface MIB extensions for EOS-specific interface attributes and counters.

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What Is ARISTA-IF-MIB?

ARISTA-IF-MIB is an Arista Networks EOS-specific extension to the standard IF-MIB, adding vendor-specific interface attributes and rate-based counters not covered by the generic interface MIB. It exposes performance data such as packet and octet rates per interface, as well as tracking of operational status changes, supplementing the interface table with real-time throughput figures. This is squarely a performance-monitoring MIB: administrators use it to watch interface packet/octet rates and operational status flap counts as indicators of network load and link stability/hardware health on Arista switches. It explicitly extends and depends on the standard IETF IF-MIB, correlating its entries to ifIndex values from that MIB. It is deployed on Arista EOS-based data center and campus switches wherever finer-grained, pre-computed interface rate statistics are needed beyond what IF-MIB alone provides, which is exactly where ARISTA-IF-MIB SNMP monitoring adds value.

IPNetwork Monitor allows you to monitor SNMP objects defined in ARISTA-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

Arista EOS switches

Monitoring Examples

A monitoring system would poll aristaIfTable/aristaIfEntry for aristaIfInPktRate, aristaIfOutPktRate, aristaIfInOctetRate, and aristaIfOutOctetRate to track real-time throughput per interface without having to compute deltas from raw counters. aristaIfOperStatusChanges lets an admin detect a flapping link, while aristaIfRateInterval and aristaIfRatesLastUpdated indicate how current the rate figures are. A sudden spike in aristaIfOperStatusChanges combined with dropping octet rates would point to an unstable physical link or failing transceiver.

What Can Be Monitored

interface input/output packet rate
interface input/output octet rate
interface operational status changes
rate sampling interval

Imported Objects

From ARISTA-SMI-MIB

aristaMibs

OBJECT-IDENTITY

From HCNUM-TC

CounterBasedGauge64

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

How to Use in IPNetwork Monitor

Example using aristaIfOperStatusChanges OID:

Select an Arista Networks EOS switch 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 aristaIfOperStatusChanges 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. The number of times since system boot that ifOperStatus has changed. 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 Counter32-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
aristaIfMIB	1.3.6.1.4.1.30065.3.15			The MIB module for reporting additional interface statistics on Arista devices.
aristaIf	1.3.6.1.4.1.30065.3.15.1
aristaIfTable	1.3.6.1.4.1.30065.3.15.1.1		not-accessible	This table contains additional interface statistics not contained in the IF-MIB.
aristaIfEntry	1.3.6.1.4.1.30065.3.15.1.1.1		not-accessible	An entry containing statistics for a given interface.
TIK aristaIfCounterLastUpdated	1.3.6.1.4.1.30065.3.15.1.1.1.1	TimeTicks	read-only	The value of sysUpTime at which the counters in the ifTable and ifXTable were sampled from the hardware.
TIK aristaIfRateInterval	1.3.6.1.4.1.30065.3.15.1.1.1.2	TimeTicks	read-only	The amount of time over which the aristaIf*Rate values are averaged for this interface.
G32 aristaIfInPktRate	1.3.6.1.4.1.30065.3.15.1.1.1.3	Gauge32	read-only	The rate, in packets per second, of packets inbound on this interface, averaged over aristaIfRateInterval.
G32 aristaIfOutPktRate	1.3.6.1.4.1.30065.3.15.1.1.1.4	Gauge32	read-only	The rate, in packets per second, of packets outbound on this interface, averaged over aristaIfRateInterval.
NUM aristaIfInOctetRate	1.3.6.1.4.1.30065.3.15.1.1.1.5	CounterBasedGauge64	read-only	The rate, in octets per second, of data inbound on this interface, averaged over aristaIfRateInterval.
NUM aristaIfOutOctetRate	1.3.6.1.4.1.30065.3.15.1.1.1.6	CounterBasedGauge64	read-only	The rate, in octets per second, of data inbound on this interface, averaged over aristaIfRateInterval.
TIK aristaIfRatesLastUpdated	1.3.6.1.4.1.30065.3.15.1.1.1.7	TimeTicks	read-only	The value of sysUpTime at which the aristaIf*Rate gauges were last calculated.
C32 aristaIfOperStatusChangesEx	1.3.6.1.4.1.30065.3.15.1.1.1.8	Counter32	read-only	The number of times since system boot that ifOperStatus has changed.
aristaIfConformance	1.3.6.1.4.1.30065.3.15.2
aristaIfGroups	1.3.6.1.4.1.30065.3.15.2.1
aristaIfAdditionalInformationGroup	1.3.6.1.4.1.30065.3.15.2.1.1			A collection of objects providing additional information above and beyond what the IF-MIB provides, applicable to all network interfaces.
aristaIfCompliances	1.3.6.1.4.1.30065.3.15.2.2
aristaIfCompliance	1.3.6.1.4.1.30065.3.15.2.2.1			The compliance statement for Arista devices that implement the IF-MIB

RFC description

Provides extended interface statistics for Arista network devices beyond the standard IF-MIB. Includes packet/octet rates, operational status changes, ACL drops, error-disabled reasons, and 802.1X EAPoL authentication metrics.

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Download ARISTA-IF-MIB