CISCO-SELECTIVE-VRF-DOWNLOAD-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CISCO-SELECTIVE-VRF-DOWNLOAD-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2011-06-22

Category: Cisco Devices, MPLS and Traffic Engineering, Routing Protocols

Description: Manages selective VRF route downloading to line cards to reduce memory consumption in large MPLS VPN deployments.

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What Is CISCO-SELECTIVE-VRF-DOWNLOAD-MIB?

CISCO-SELECTIVE-VRF-DOWNLOAD-MIB is a Cisco vendor MIB for large MPLS L3VPN deployments that manages the Selective VRF Download (SVD) feature, which limits which VRF prefixes and labels are pushed to a given line card's forwarding hardware based on the role (e.g. core-facing vs. edge-facing) of that physical entity, reducing memory consumption on the card. It exposes global enable/operational-status objects, a per-entity state table recording each physical entity's detected role and role-change history, and role-transition counters together with a discontinuity timestamp. Its monitoring value is centered on configuration and fault status of line-card hardware roles: administrators check csvdAdminEnable/csvdOperEnable to confirm the feature is active, and poll csvdStateTable to see each line card's current entity role, when it last changed, and how many times it has transitioned, catching unexpected role flapping that could indicate misconfiguration or hardware/software instability. It relies on Cisco's ENTITY-MIB physical-entity indexing to identify the line cards/entities referenced in csvdStateTable. It is deployed on Cisco routers with multiple line cards operating as core or edge-facing MPLS VPN provider-edge/core routers in service-provider networks, where network engineers typically perform a CISCO-SELECTIVE-VRF-DOWNLOAD-MIB download to load the module definitions before polling csvdStateTable.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-SELECTIVE-VRF-DOWNLOAD-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 MPLS provider-edge/core router with multiple line cards

Monitoring Examples

An admin polls csvdStateTable, indexed by physical entity and csvdStateAFI, to read csvdStateEntityRole and csvdStateEntityRoleLastChange for each line card, confirming a card configured as core-facing has not unexpectedly flipped to edge-facing. A rising csvdStateEntityRoleTransitions counter combined with a recent csvdCounterDiscontinuityTime suggests the card is repeatedly reclassifying its role, which could explain unexplained VRF prefix download churn or memory pressure on that line card. csvdEntityRoleChangeNotificationEnable governs whether such role changes also generate SNMP traps for real-time alerting.

What Can Be Monitored

  • SVD admin/operational enable status
  • per-line-card entity role
  • entity role last-change time
  • role transition count
  • role-change notification enable
Imported Objects

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From ENTITY-MIB

entPhysicalIndexOBJECT-TYPE

From IANA-ADDRESS-FAMILY-NUMBERS-MIB

AddressFamilyNumbers

From MPLS-L3VPN-STD-MIB

MplsL3VpnName

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using csvdStateEntityRoleTransitions OID:

Select a Cisco MPLS provider-edge/core router with multiple line card 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 csvdStateEntityRoleTransitions into the Find box to locate it in the OID tree, then select it and click OK. This object indicates the number of times the corresponding instance of csvdStateEntityRole 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

RFC description

Cisco proprietary MIB for managing selective VRF (Virtual Routing and Forwarding) instance downloads on IOS devices.

Start monitoring Cisco MPLS provider-edge/core router with multiple line cards 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-SELECTIVE-VRF-DOWNLOAD-MIB