DOCS-IETF-BPI2-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsDOCS-IETF-BPI2-MIB

Organization: IETF IP over Cable Data Network (IPCDN) Working Group

Last Updated: 2005-07-20

Category: DOCSIS and Cable, Network Interfaces

Description: Defines managed objects for the DOCSIS Baseline Privacy Plus (BPI+) interface, extending BPI with enhanced security including digital certificates.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring DOCS-IETF-BPI2-MIB with a free 30-day trial of IPNetwork Monitor.

What Is DOCS-IETF-BPI2-MIB?

DOCS-IETF-BPI2-MIB (RFC 4131) is a vendor-neutral IETF standards MIB that defines managed objects for DOCSIS Baseline Privacy Plus (BPI+), the enhanced security layer used between cable modems (CMs) and cable modem termination systems (CMTSs) in DOCSIS cable networks. It exposes configuration and status data related to security association management, digital certificate handling, key exchange state, and encryption enforcement for the cable access link. Its monitoring value is chiefly around security/software status rather than physical hardware: administrators use it to verify that a cable modem has successfully authenticated and established an active security association with the CMTS, and to detect authorization or certificate failures that would otherwise silently degrade or block service. It builds on core DOCSIS interface MIBs and X.509 certificate concepts, since BPI+ authentication depends on modem and CMTS digital certificates validated against a shared PKI, and consulting a DOCS-IETF-BPI2-MIB OID list is a useful first step for locating the docsBpi2CmtsObjects branch used to review per-modem security state. It is deployed in cable broadband access networks wherever DOCSIS BPI+ security is enabled between CMTS head-end equipment and subscriber cable modems.

IPNetwork Monitor allows you to monitor SNMP objects defined in DOCS-IETF-BPI2-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

  • vendor-neutral, standards-based MIB, not tied to a specific manufacturer
  • DOCSIS cable modem
  • DOCSIS CMTS (cable modem termination system)

Monitoring Examples

Because only the top-level container object docsBpi2CmtsObjects was provided as a sample, specific table names cannot be cited here beyond this root; in a real deployment an administrator would walk the CMTS-side objects under docsBpi2CmtsObjects to review per-cable-modem security association state, authorization status, and certificate validity. A modem stuck in an unauthorized or certificate-rejected state would be visible as an anomalous status value under this branch, indicating either a misconfigured certificate or a provisioning/authentication failure preventing the modem from passing traffic. This module is data-rich for security state but does not cover general interface throughput, which is handled by other DOCSIS MIBs.

What Can Be Monitored

  • security association status
  • modem authorization state
  • digital certificate validity
  • key exchange/encryption state
Imported Objects

From IF-MIB

ifIndexOBJECT-TYPE

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32
mib-2

From SNMPv2-TC

DateAndTime
MacAddress
RowStatus
StorageType
TEXTUAL-CONVENTION
TruthValue
OIDs

RFC description

DOCSIS Baseline Privacy Interface Plus (BPI+) MIB for cable modem security.

Start monitoring DOCSIS cable modem/CMTS (Baseline Privacy Plus, vendor-neutral IETF standard RFC 4131) 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 DOCS-IETF-BPI2-MIB