CISCO-VRF-MIB

All MIBs › CISCO-VRF-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2009-12-10

Category: IP and Core Protocols, VPN and Security, Vendor: Cisco Devices

Description: Manages Cisco VPN Routing and Forwarding (VRF) instances including interface associations and routing tables.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is CISCO-VRF-MIB?

CISCO-VRF-MIB manages Cisco's VPN Routing and Forwarding (VRF) instances, an extension of IP routing that provides multiple independent routing tables on a single device, used together with MPLS VPN and VRF-Lite/vNET features to keep customer traffic separated. It exposes a VRF table with each VRF's name, associated vNET tag, operational status, route-distribution protocol, and storage type, plus a VRF list table for grouping VRFs, along with notification and conformance groups. Its main monitoring value is tracking the operational/software status of routing virtualization: whether a given VRF instance is operationally up or down, which route-distribution protocol it is running, and whether VRF provisioning changes have completed successfully. As stated in the module description, it is used in conjunction with MPLS VPN to provide traffic separation, implying dependency on Cisco's MPLS/VPN and network-virtualization MIB family. It is typically deployed on Cisco provider-edge or enterprise routers implementing MPLS VPN, VRF-Lite, or virtual network (vNET) segmentation. Engineers can download the CISCO-VRF-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-VRF-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

Cisco provider-edge/enterprise router (MPLS VPN, VRF-Lite, vNET)

Monitoring Examples

An operator would poll cvVrfTable/cvVrfEntry keyed by cvVrfIndex, checking cvVrfOperStatus for each cvVrfName to confirm a customer's VRF is operationally up, and cvVrfRouteDistProt to verify the expected route-distribution protocol is configured. A VRF stuck in a down operational state despite an active cvVrfRowStatus would indicate a misconfiguration or resource issue preventing that routing instance from coming up. cvVrfListTable/cvVrfListEntry would be checked when troubleshooting VRF group memberships across a vNET deployment.

What Can Be Monitored

VRF operational status
VRF name and vNET tag
route distribution protocol
VRF provisioning/row status
VRF list/group membership

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex
ifIndex	OBJECT-TYPE
ifName	OBJECT-TYPE

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

RowStatus
StorageType
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using cvVrfOperStatus OID:

Select a Cisco provider-edge/enterprise router (VRF/VRF-Lite/vNET) 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 cvVrfOperStatus 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. Denotes whether a VRF is operational or not. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value is anything other than 'up', since that indicates the condition this object reports has changed to one worth investigating. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoVrfMIB	1.3.6.1.4.1.9.9.711			The MIB module for provisioning and managing network virtualization features. This module provides manageability for VRF, VRF-Lite and vNET. VRF stands for Virtual Routing and Forwarding. VRF is an extension of IP routing that provides multiple routing instances. VRF provides independent routing instances and hence the same or over-lapping addresses can be used without conflicting each other. VRFs are used in conjunction with MPLS VPN to provide traffic separation between multiple VPN customers. A VRF-Lite enabled device implements VRFs and does not require MPLS for end to end communication. Instead of using MPLS labels, VRF-Lite uses the interfaces to distinguish routes for different VPNs. VRF-Lite forms virtual packet-forwarding tables by associating one or more interfaces with each VRF, and interfaces cannot belong to more than one VRF at any time. VRF-Lite is an IP based hop-by-hop virtualization mechanism and it involves complex configuration of every hop in the network. vNET, virtual network, is also an IP based hop-by-hop mechanism that can provide end-to-end virtualization of the network. vNET greatly reduces the complexity in VRF-Lite deployment. This MIB module will allow the user to perform the following * Create and monitor VRFs * Group VRFs to create VRF List * Associate/Dis-associate interface to/from a VRF * Enable vNET trunking on an interface * Specify VRF list per trunk
ciscoVrfMIBNotifs	1.3.6.1.4.1.9.9.711.0
NTF cvVrfIfUp	1.3.6.1.4.1.9.9.711.0.1			This notification is generated when: a. The ifOperStatus of an interface associated with a VRF changes to the up(1) state. b. When an interface with ifOperStatus = up(1) is associated with a VRF. The interface is identified by ifName and the VRF is identified by cvVrfName varbinds respectively.
NTF cvVrfIfDown	1.3.6.1.4.1.9.9.711.0.2			This notification is generated when: a. The ifOperStatus of an interface associated with a VRF changes to the down(2) state. b. When an interface with ifOperStatus = up(1) state is disassociated with a VRF. The interface is identified by ifName and the VRF is identified by cvVrfName varbinds respectively. If all the interfaces associated with the VRF are in down(2) state or if there are no more interfaces associated with the VRF, then the cvVrfOperStatus will have a value of down(2).
NTF cvVnetTrunkUp	1.3.6.1.4.1.9.9.711.0.3			This notification is generated when the ifOperStatus of a vNET trunk interface changes to the up(1) state. The interface is identified by ifName varbind. The notification will be generated for only those interfaces for which the cvInterfaceVnetTrunkEnabled object has a value of True(1).
NTF cvVnetTrunkDown	1.3.6.1.4.1.9.9.711.0.4			This notification is generated when the ifOperStatus of a vNET trunk interface changes to the down(2) state. The interface is identified by ifName varbind. The notification will be generated for only those interfaces for which the cvInterfaceVnetTrunkEnabled object has a value of True(1).
ciscoVrfMIBObjects	1.3.6.1.4.1.9.9.711.1
cvVrf	1.3.6.1.4.1.9.9.711.1.1
cvVrfTable	1.3.6.1.4.1.9.9.711.1.1.1		not-accessible	This table contains entries representing a VRF - Virtual Routing and Forwarding instance. There will be an entry for each VRF instance created in the system.
cvVrfEntry	1.3.6.1.4.1.9.9.711.1.1.1.1		not-accessible	An entry representing the information pertaining to a virtual routing and forwarding instance.
U32 cvVrfIndex	1.3.6.1.4.1.9.9.711.1.1.1.1.1	Unsigned32	not-accessible	An identifier that is assigned to each VRF and is used to uniquely identify it. The uniqueness of this identifier is restricted only to this device.
STR cvVrfName	1.3.6.1.4.1.9.9.711.1.1.1.1.2	SnmpAdminString	read-create	The human-readable name of the VRF instance. This name uniquely identifies the VRF instance in the system. This object is mandatory for creating an entry in this table.
CVV cvVrfVnetTag	1.3.6.1.4.1.9.9.711.1.1.1.1.3	CvVnetTagOrZero	read-create	The vNET tag assigned to this VRF instance. A value of zero(0) indicates the VRF instance is not a vNET and such vrf could be part of a VRF-Lite or MPLS deployment. A set with a value of zero(0) will remove the vNET tag assigned to this VRF. The value of this object can be changed even when cvVrfRowStatus is having a value of active(1).
INT cvVrfOperStatusEx	1.3.6.1.4.1.9.9.711.1.1.1.1.4	INTEGER	read-only	Denotes whether a VRF is operational or not. A VRF is up(1) when at least one interface associated with the VRF, which ifOperStatus is up(1). A VRF is down(2) when: a. There does not exist at least one interface whose ifOperStatus is up(1). b. There are no interfaces associated with the VRF.
BIT cvVrfRouteDistProt	1.3.6.1.4.1.9.9.711.1.1.1.1.5	Bits	read-only	Denotes the route distribution protocol enabled in this VRF. Note that more than one routing protocol may be enabled at the same time.
STO cvVrfStorageType	1.3.6.1.4.1.9.9.711.1.1.1.1.6	StorageType	read-only	The storage type for this entry.
ROW cvVrfRowStatus	1.3.6.1.4.1.9.9.711.1.1.1.1.7	RowStatus	read-create	This object is used to create, modify, and/or delete a row in this table.
cvVrfListTable	1.3.6.1.4.1.9.9.711.1.1.2		not-accessible	This table contains the entries representing the VRFs in a VRF List.
cvVrfListEntry	1.3.6.1.4.1.9.9.711.1.1.2.1		not-accessible	An entry in this table represents a VRF in a VRF list. A VRF list is a collection of VRFs grouped together. The list defined here can be associated to a vNET trunk interface, which would then act as a trunk carrying traffic for all VRFs in the VRF list. An example of a VRF List - list1.1 = Vrf_Finance list1.2 = Vrf_HR
STR cvVrfListName	1.3.6.1.4.1.9.9.711.1.1.2.1.1	SnmpAdminString	not-accessible	The human-readable name of the VRF List. This name uniquely identifies the VRF List in the system.
U32 cvVrfListVindex	1.3.6.1.4.1.9.9.711.1.1.2.1.2	Unsigned32	not-accessible	This index uniquely identifies a VRF within the VRF list.
U32 cvVrfListVrfIndex	1.3.6.1.4.1.9.9.711.1.1.2.1.3	Unsigned32	read-create	This object indicates the associated VRF in the cvVrfTable. The value of this object is index value (cvVrfIndex) of cvVrfTable. The value of this object cannot be modified when the entry is in active(1) state.
STO cvVrfListStorageType	1.3.6.1.4.1.9.9.711.1.1.2.1.4	StorageType	read-only	The storage type for this entry.
ROW cvVrfListRowStatus	1.3.6.1.4.1.9.9.711.1.1.2.1.5	RowStatus	read-create	This object is used to create, modify, and/or delete a row in this table.
cvInterface	1.3.6.1.4.1.9.9.711.1.2
cvVrfInterfaceTable	1.3.6.1.4.1.9.9.711.1.2.1		not-accessible	This table contains the entries representing the interfaces associated with a VRF instance.
cvVrfInterfaceEntry	1.3.6.1.4.1.9.9.711.1.2.1.1		not-accessible	An entry in this table represents an interface to which a VRF is associated. A VRF can be associated to multiple interfaces. There will be one entry per interface for each VRF instance in this table.
NUM cvVrfInterfaceIndex	1.3.6.1.4.1.9.9.711.1.2.1.1.1	InterfaceIndex	not-accessible	This is a unique index for an entry in this table. A non-zero index for an entry indicates the ifIndex for the corresponding interface entry in the ifTable. Note that this table does not necessarily correspond one-to-one with all entries in the Interface MIB.
CVV cvVrfInterfaceType	1.3.6.1.4.1.9.9.711.1.2.1.1.2	CvVrfIfType	read-only	The VRF type of this interface. The type of the interface is determined based on the VRF associated with this interface. If the VRF is not tagged with vnet tag then the type will be vrfEdge. If the VRF is tagged with vnet tag then it will become vnetEdge. For vNETTrunkSI, the sub-interface in question is automatically created for a VRF when trunking is enabled on the main interface.
CVV cvVrfInterfaceVnetTagOverride	1.3.6.1.4.1.9.9.711.1.2.1.1.3	CvVnetTagOrZero	read-create	This object can be used to over-ride the vNET tag assigned to the VRF traffic going through this interface. This object is applicable only if the cvVrfInterfaceType of this interface has a value of vNETTrunkSI(1). By default the tagged traffic will use the value denoted by cvVrfVnetTag of this VRF. In which case this object will have a value of zero(0). A set with a value of zero(0) will revert the tag assignment behaviour to default behaviour mentioned above.
STO cvVrfInterfaceStorageType	1.3.6.1.4.1.9.9.711.1.2.1.1.4	StorageType	read-only	The storage type for this entry.
ROW cvVrfInterfaceRowStatus	1.3.6.1.4.1.9.9.711.1.2.1.1.5	RowStatus	read-create	This object is used to create, modify, and/or delete a row in this table. When a row is created in this table the VRF is associated to an interface. When a row is deleted from this table the VRF is dis-associated from the interface.
cvInterfaceTable	1.3.6.1.4.1.9.9.711.1.2.2		not-accessible	This table contains entries representing the interfaces on which the vNET trunking can be enabled.
cvInterfaceEntry	1.3.6.1.4.1.9.9.711.1.2.2.1		not-accessible	An entry in this table represents an interface on which the vNET trunking can be enabled. When an interface is enabled for vNET trunking, it will carry the traffic for the VRFs which are tagged with the vNET tag.
T/F cvInterfaceVnetTrunkEnabled	1.3.6.1.4.1.9.9.711.1.2.2.1.1	TruthValue	read-write	This object represents the vNET trunking status for this interface. When enabled for vNET trunking the interface will carry traffic of all vNETs in the device.
STR cvInterfaceVnetVrfList	1.3.6.1.4.1.9.9.711.1.2.2.1.2	SnmpAdminString	read-write	The name of the VRF List associated with this interface. A non-zero length string represent a list of vNET tagged VRFs, whose traffic will be forwarded through this interface. A zero length string denotes that the traffic for all the vNET tagged VRFs will be forwarded through this interface.
cvNotifCntl	1.3.6.1.4.1.9.9.711.1.3
T/F cvVrfIfNotifEnable	1.3.6.1.4.1.9.9.711.1.3.1	TruthValue	read-write	This object indicates whether the device should generate notifications related to VRF Interface status change.
T/F cvVnetTrunkNotifEnable	1.3.6.1.4.1.9.9.711.1.3.2	TruthValue	read-write	This object indicates whether the device should generate notifications related to vNET Trunk Interface status change.
ciscoVrfMIBConform	1.3.6.1.4.1.9.9.711.2
cvMIBGroups	1.3.6.1.4.1.9.9.711.2.1
cvMIBVrfGroup	1.3.6.1.4.1.9.9.711.2.1.1			Collection of objects needed for VRF and VRF-Lite management.
cvMIBVrfNotifGroup	1.3.6.1.4.1.9.9.711.2.1.2			Collection of VRF notifications.
cvMIBVnetGroup	1.3.6.1.4.1.9.9.711.2.1.3			Collection of objects needed for vNET management.
cvMIBVnetNotifGroup	1.3.6.1.4.1.9.9.711.2.1.4			Collection of VRF and vNET notifications.
cvMIBCompliances	1.3.6.1.4.1.9.9.711.2.2
cvMIBCompliance	1.3.6.1.4.1.9.9.711.2.2.1			The compliance statement for SNMP Agents which implement this MIB.

RFC description

Cisco vendor MIB for managing Virtual Routing and Forwarding (VRF) instances and configurations.

Start monitoring Cisco provider-edge/enterprise router (VRF/VRF-Lite/vNET) 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 CISCO-VRF-MIB