ARISTA-IP-MIB

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Organization: Arista Networks, Inc.

Last Updated: 2018-12-12

Category: Vendor: Arista

Description: Arista EOS IP layer extensions for address and routing table management.

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What Is ARISTA-IP-MIB?

ARISTA-IP-MIB is a proprietary Arista Networks module extending standard IP-layer statistics with additional per-interface, per-IP-version counters not covered by generic IETF IP MIBs. It exposes a per-interface statistics table breaking down inbound and outbound packet and octet counts, separately tracking unicast traffic, across both IPv4 and IPv6. This is primarily a performance/traffic monitoring module, letting operators baseline and detect anomalies in per-interface IP traffic volume, such as a sudden drop in aristaIpIfStatsInPkts indicating an upstream connectivity problem. It explicitly supplements the standard IP-MIB and IF-MIB by providing Arista-specific statistics not present in those base modules. It is deployed on Arista EOS switches wherever granular per-interface, per-IP-version traffic accounting is needed beyond what standard MIBs provide. Engineers can download the ARISTA-IP-MIB file directly to load it into their MIB browser.

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

Arista Networks EOS switch

Monitoring Examples

An operator would poll aristaIpIfStatsTable, indexed by aristaIpIfStatsIfIndex and aristaIpIfStatsIPVersion, reading aristaIpIfStatsInOctets/aristaIpIfStatsOutOctets for traffic volume and aristaIpIfStatsInUcastPkts/aristaIpIfStatsOutUcastPkts for unicast packet rates. Comparing IPv4 versus IPv6 rows for the same ifIndex reveals the traffic mix on a dual-stack interface. A sudden drop in aristaIpIfStatsInPkts for a given interface and IP version, while the interface stays administratively up, would point to an upstream routing or peering issue rather than a physical link fault.

What Can Be Monitored

per-interface IP packet counts (in/out)
per-interface IP octet counts (in/out)
per-interface unicast packet/octet counts
traffic breakdown by IPv4 vs. IPv6

Imported Objects

From ARISTA-SMI-MIB

aristaMibs

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From INET-ADDRESS-MIB

InetVersion

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter64
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TimeStamp

How to Use in IPNetwork Monitor

Example using aristaIpIfStatsInPkts 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 aristaIpIfStatsInPkts 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 IP packets received. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime. 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
aristaIpMIB	1.3.6.1.4.1.30065.3.27			This MIB module provides additional IP statistics on Arista devices.
aristaIpMibObjects	1.3.6.1.4.1.30065.3.27.1
aristaIpIfStatsTable	1.3.6.1.4.1.30065.3.27.1.1		not-accessible	This table contains traffic statistics per IP version per interface beyond what the IP-MIB provides, such as separate counters for unicast and multicast traffic.
aristaIpIfStatsEntry	1.3.6.1.4.1.30065.3.27.1.1.1		not-accessible	An entry containing IP statistics for a given interface.
INE aristaIpIfStatsIPVersion	1.3.6.1.4.1.30065.3.27.1.1.1.1	InetVersion	not-accessible	The IP version of this row.
NUM aristaIpIfStatsIfIndex	1.3.6.1.4.1.30065.3.27.1.1.1.2	InterfaceIndex	not-accessible	The index value that uniquely identifies the interface to which this entry is applicable. The interface identified by a particular value of this index is the same interface as identified by the same value of the IF-MIB's ifIndex.
C64 aristaIpIfStatsInPktsEx	1.3.6.1.4.1.30065.3.27.1.1.1.3	Counter64	read-only	The number of IP packets received. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsInOctets	1.3.6.1.4.1.30065.3.27.1.1.1.4	Counter64	read-only	The number of IP octets received. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsOutPkts	1.3.6.1.4.1.30065.3.27.1.1.1.5	Counter64	read-only	The number of IP packets transmitted. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsOutOctets	1.3.6.1.4.1.30065.3.27.1.1.1.6	Counter64	read-only	The number of IP octets transmitted. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsInUcastPkts	1.3.6.1.4.1.30065.3.27.1.1.1.7	Counter64	read-only	The number of IP unicast packets received. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsInUcastOctets	1.3.6.1.4.1.30065.3.27.1.1.1.8	Counter64	read-only	The number of IP unicast octets received. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsOutUcastPkts	1.3.6.1.4.1.30065.3.27.1.1.1.9	Counter64	read-only	The number of IP unicast packets transmitted. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsOutUcastOctets	1.3.6.1.4.1.30065.3.27.1.1.1.10	Counter64	read-only	The number of IP unicast octets transmitted. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsInMcastPkts	1.3.6.1.4.1.30065.3.27.1.1.1.11	Counter64	read-only	The number of IP multicast packets received. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsInMcastOctets	1.3.6.1.4.1.30065.3.27.1.1.1.12	Counter64	read-only	The number of IP multicast octets received. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsOutMcastPkts	1.3.6.1.4.1.30065.3.27.1.1.1.13	Counter64	read-only	The number of IP multicast packets transmitted. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
C64 aristaIpIfStatsOutMcastOctets	1.3.6.1.4.1.30065.3.27.1.1.1.14	Counter64	read-only	The number of IP multicast octets transmitted. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of aristaIpIfStatsDiscontinuityTime.
TIM aristaIpIfStatsDiscontinuityTime	1.3.6.1.4.1.30065.3.27.1.1.1.15	TimeStamp	read-only	The value of sysUpTime on the most recent occasion at which any one or more of this entry's counters suffered a discontinuity. If no such discontinuities have occurred since the last re- initialization of the local management subsystem, then this object contains a zero value.
U32 aristaIpIfStatsRefreshRate	1.3.6.1.4.1.30065.3.27.1.1.1.16	Unsigned32	read-only	The minimum reasonable polling interval for this entry. This object provides an indication of the minimum amount of time required to update the counters in this entry.
aristaIpMibConformance	1.3.6.1.4.1.30065.3.27.2
aristaIpMibCompliances	1.3.6.1.4.1.30065.3.27.2.1
aristaIpMibCompliance	1.3.6.1.4.1.30065.3.27.2.1.1			The compliance statement for Arista switches that implement the ARISTA-IP-MIB.
aristaIpMibGroups	1.3.6.1.4.1.30065.3.27.2.2
aristaIpIfStatsGroup	1.3.6.1.4.1.30065.3.27.2.2.1			The collection of objects that provide additional IP traffic statistics beyond what the IP-MIB provides.

RFC description

Vendor-private MIB for Arista networking devices; manages IP routing, addressing, and layer-3 forwarding configuration.

Start monitoring Arista Networks EOS switches 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 ARISTA-IP-MIB