CISCO-VPDN-MGMT-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsCISCO-VPDN-MGMT-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2009-06-16

Category: VPN and Security, Vendor: Cisco Devices

Description: Manages Cisco Virtual Private Dial-up Network (VPDN) tunnels, sessions, and user authentication statistics.

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What Is CISCO-VPDN-MGMT-MIB?

CISCO-VPDN-MGMT-MIB is a Cisco IOS MIB for managing the Virtual Private Dialup Network (VPDN) feature, which forwards PPP links from an ISP's network access server to a home gateway over tunnels such as L2TP/L2F. It belongs to the dial/VPN networking category and exposes global VPDN counters, per-tunnel-type system statistics, and per-user failure history. Its monitoring value centers on software/service status: global and per-system-type totals for active tunnels, active sessions, denied users, and connection-request success/failure counts reveal whether VPDN tunnel establishment is healthy or failing. It builds on Cisco IOS's PPP and tunneling infrastructure but is otherwise a self-contained Cisco enterprise MIB without a strong external standards dependency beyond general SNMPv2 SMI conventions. It is typically deployed on Cisco access servers and routers acting as either the tunnel-initiating LAC or tunnel-terminating LNS in ISP dial-access and enterprise remote-access architectures. Engineers can download the CISCO-VPDN-MGMT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-VPDN-MGMT-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 IOS access servers and routers (LAC/LNS for VPDN tunnels)

Monitoring Examples

An operator would poll cvpdnSystemTable/cvpdnSystemEntry, indexed by cvpdnSystemTunnelType, comparing cvpdnSystemInitialConnReq against cvpdnSystemSuccessConnReq and cvpdnSystemFailedConnReq for a given tunnel type, revealing a spike in failed connection requests that indicates authentication or tunnel-negotiation problems. The global scalars cvpdnTunnelTotal, cvpdnSessionTotal, and cvpdnDeniedUsersTotal give a quick health check of overall VPDN load and whether users are being rejected. A rising cvpdnSystemDeniedUsersTotal alongside falling cvpdnSystemSuccessConnReq would flag a tunnel-authentication outage needing investigation.

What Can Be Monitored

  • total active VPDN tunnels
  • total active VPDN sessions
  • denied user connections
  • connection request success/failure counts per tunnel type
  • per-tunnel-type session and tunnel totals
Imported Objects

From CISCO-SMI

ciscoExperimentOBJECT-IDENTITY

From IF-MIB

InterfaceIndexOrZero

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using cvpdnSystemDeniedUsersTotal OID:

Select a Cisco IOS access server or router (VPDN LAC/LNS) 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 cvpdnSystemDeniedUsersTotal 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 total number of denied user attempts to all the VPDN tunnels of this tunnel type since last system re-initialization. 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 (in attempts), 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 VPDN management MIB for Virtual Private Dialup Network tunneling, supporting PPP link forwarding from ISPs to home gateways.

Start monitoring Cisco IOS access servers and routers (VPDN LAC/LNS) 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-VPDN-MGMT-MIB