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What's a MIB?

A MIB (Management Information Base) is a structured document that defines the data a device exposes over SNMP — things like interface counters, system uptime, or CPU load. Each module declares a set of named objects, organized into a tree.

What's SNMP?

SNMP (Simple Network Management Protocol) is how network devices — routers, switches, servers — report status and statistics to monitoring tools. It's the protocol; MIBs are the vocabulary it uses to describe what's being asked for.

What's an OID?

An OID (Object Identifier) is the numeric address of one piece of data in a MIB — a dotted sequence like 1.3.6.1.2.1.1.1, read from the root of a global tree down to one specific object. Names are easier to read; OIDs are what's actually sent over the wire.

Try it: sysDescr (1.3.6.1.2.1.1.1) →

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ARISTA-VRF-MIB

19 objects

This MIB contains information related to Virtual Routing and Forwarding (VRF). VRF is a mechanism by which a single device can provide independent routing instances. This allows customers to virtually isolate network traffic, and also use overlapping IP addresses. Layer3 or routed interfaces in the system will belong to one VRF at a time. The datapath forwarding logic uses the VRF membership of the input interface to determine a specific forwarding table to use for routing the traffic. VRF can also be used to isolate management traffic from the rest of the data plane traffic. This MIB module provides the following pieces of information: * A table of all VRFs configured in the system * A table that contains the VRF membership information for all routed interfaces in the system by sparsely augmenting the ifTable.

Imported Objects

ARISTA-SMI-MIB	aristaMibs
IF-MIB	ifIndex
SNMPv2-CONF	MODULE-COMPLIANCE OBJECT-GROUP
SNMPv2-SMI	MODULE-IDENTITY OBJECT-TYPE
SNMPv2-TC	TEXTUAL-CONVENTION

OID	Name	Access	Status	Description
1.3.6.1.4.1.30065.3.18	IdentityaristaVrfMIB			This MIB contains information related to Virtual Routing and Forwarding (VRF). VRF is a mechanism by which a single device can provide independent routing inst…
1.3.6.1.4.1.30065.3.18.1	NodearistaVrfMibObjects
1.3.6.1.4.1.30065.3.18.1.1	TablearistaVrfTable	not-accessible	current	This table contains information about VRFs currently configured in the system.
1.3.6.1.4.1.30065.3.18.1.1.1	RowaristaVrfEntry	not-accessible	current	A single row containing information for one VRF that is configured in the system.
1.3.6.1.4.1.30065.3.18.1.1.1.1	ColumnaristaVrfName	not-accessible	current	The name of the VRF that is represented by this row.
1.3.6.1.4.1.30065.3.18.1.1.1.2	ColumnaristaVrfRoutingStatus	read-only	current	The current status of data path routing in this VRF. Routing for IPv4 and IPv6 packets can be independently enabled by the administrator for a given VRF. This …
1.3.6.1.4.1.30065.3.18.1.1.1.3	ColumnaristaVrfRouteDistinguisher	read-only	current	The route distinguisher for this VRF.
1.3.6.1.4.1.30065.3.18.1.1.1.4	ColumnaristaVrfState	read-only	current	The state of the VRF.
1.3.6.1.4.1.30065.3.18.1.2	TablearistaVrfIfTable	not-accessible	current	This table augments the ifTable and contains the VRF membership information for every routed interface in the system. A row is present only for each active rou…
1.3.6.1.4.1.30065.3.18.1.2.1	RowaristaVrfIfEntry	not-accessible	current	VRF membership information for a single routed interface.
1.3.6.1.4.1.30065.3.18.1.2.1.1	ColumnaristaVrfIfMembership	read-only	current	The name of the VRF that this routed interface is currently part of.
1.3.6.1.4.1.30065.3.18.2	NodearistaVrfMibConformance
1.3.6.1.4.1.30065.3.18.2.1	NodearistaVrfMibCompliances
1.3.6.1.4.1.30065.3.18.2.1.1	CompliancearistaVrfMibCompliance		current	The compliance statement for Arista switches that implement the ARISTA-VRF-MIB.
1.3.6.1.4.1.30065.3.18.2.2	NodearistaVrfMibGroups
1.3.6.1.4.1.30065.3.18.2.2.1	GrouparistaVrfInformationGroup		current	The collection of objects that provide VRF information in the system.

Type Definitions

Name	Syntax	Status	Description
VrfName	OCTET STRING (SIZE (0..100))	current	A human-readable identifier assigned to every VRF. The identifier is unique across all VRFs in the system.
VrfRouteDistinguisher	OCTET STRING(SIZE (0..256))	current	A route distinguisher as defined in [RFC4364], in the form '<admin>:<local>', where <admin> is the administrator ID (e.g., an AS number) and <local> is the locally assigned number.
VrfState	INTEGER { active(1), inactive(2) }	current	The state of a specific VRF. When the administrator configures a VRF on the system, it stays inactive until a route distinguisher is assigned to it. Also, when the administrator deletes a VRF, there can be a small delay…