Juniper-CBF-MIB

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Organization: Juniper Networks, Inc.

Last Updated: 2002-09-16

Category: Quality of Service, Technology: QoS, Vendor: Juniper

Description: Provides managed objects for Class-Based Forwarding (CBF) policy configuration and statistics on Juniper Networks E-series broadband routers.

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What Is Juniper-CBF-MIB?

Juniper-CBF-MIB is a Juniper Networks enterprise MIB for the E-series platform implementing Class-Based Forwarding (also referred to as Connection-Based Forwarding), a mechanism for policy-based traffic forwarding decisions across interfaces. It exposes configuration objects for CBF-enabled interfaces and their forwarding connections, including per-interface and per-connection row status and index/interface mappings. Monitoring with this MIB is software/service-level: an administrator checks juniCbfIfRowStatus and juniCbfIfConnRowStatus to confirm that CBF interfaces and their ingress/egress connections are correctly provisioned and active, revealing misconfigured or down forwarding paths. It builds on standard interface indexing (ifIndex) from IF-MIB to associate CBF entries with underlying physical/logical interfaces. It is deployed on Juniper E-series broadband routers applying class-based forwarding policies to subscriber or service traffic. Engineers can download the Juniper-CBF-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Juniper-CBF-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

Juniper E-series broadband access routers

Monitoring Examples

An operator would walk juniCbfIfTable/juniCbfIfEntry to check juniCbfIfRowStatus and juniCbfIfLowerIfIndex for each configured CBF interface, confirming the interface is active and correctly bound to its underlying interface. juniCbfIfConnTable/juniCbfIfConnEntry lets the admin verify juniCbfIfConnRowStatus alongside juniCbfIfIngressIfIndex and juniCbfIfEgressIfIndex for each forwarding connection; a connection stuck in a non-active row status would indicate a failed or incomplete CBF policy binding. juniCbfNextIfIndex tracks the next available index for new CBF interface entries.

What Can Be Monitored

CBF interface row status
CBF interface-to-lower-interface binding
CBF connection row status
ingress/egress interface mapping for CBF connections

Imported Objects

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From Juniper-MIBs

juniMibs

MODULE-IDENTITY

From Juniper-TC

JuniNextIfIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
juniCbfMIB	1.3.6.1.4.1.4874.2.2.52			The Connection-Based Forwarding (CBF) Protocol MIB for the Juniper Networks Inc. enterprise.
juniCbfObjects	1.3.6.1.4.1.4874.2.2.52.1
juniCbfInterface	1.3.6.1.4.1.4874.2.2.52.1.1
JUN juniCbfNextIfIndex	1.3.6.1.4.1.4874.2.2.52.1.1.1	JuniNextIfIndex	read-only	Coordinate ifIndex value allocation for entries in juniCbfIfTable. A GET of this object returns the next available ifIndex value to be used to create an entry in the associated interface table; or zero, if no valid ifIndex value is available. This object also returns a value of zero when it is the lexicographic successor of a varbind presented in an SNMP GETNEXT or GETBULK request, for which circumstance it is assumed that ifIndex allocation is unintended. Successive GETs will typically return different values, thus avoiding collisions among cooperating management clients seeking to create table entries simultaneously.
juniCbfIfTable	1.3.6.1.4.1.4874.2.2.52.1.1.2		not-accessible	This table contains entries for CBF interfaces present in the system.
juniCbfIfEntry	1.3.6.1.4.1.4874.2.2.52.1.1.2.1		not-accessible	Each entry describes the characteristics of an CBF interface. Creating/deleting entries in this table causes corresponding entries for be created /deleted in ifTable/ifXTable/juniIfTable.
NUM juniCbfIfIndex	1.3.6.1.4.1.4874.2.2.52.1.1.2.1.1	InterfaceIndex	not-accessible	The ifIndex of the CBF interface. When creating entries in this table, suitable values for this object are determined by reading juniCbfNextIfIndex.
ROW juniCbfIfRowStatus	1.3.6.1.4.1.4874.2.2.52.1.1.2.1.2	RowStatus	read-create	Controls creation/deletion of entries in this table according to the RowStatus textual convention, constrained to support the following values only: createAndGo destroy To create an entry in this table, the following entry objects MUST be explicitly configured: juniCbfIfRowStatus juniCbfIfLowerIfIndex In addition, when creating an entry the following conditions must hold: A value for juniCbfIfIndex must have been determined previously, typically by reading juniCbfNextIfIndex. The interface identified by a nonzero juniCbfIfLowerIfIndex must exist. Once created, the following objects may not be modified: juniCbfIfLowerIfIndex A corresponding entry in ifTable/ifXTable/juniIfTable is created/ destroyed as a result of creating/destroying an entry in this table.
NUM juniCbfIfLowerIfIndex	1.3.6.1.4.1.4874.2.2.52.1.1.2.1.3	InterfaceIndexOrZero	read-create	The ifIndex of a media interface over which this CBF interface is to be layered.
juniCbfIfConnTable	1.3.6.1.4.1.4874.2.2.52.1.1.4		not-accessible	This table contains entries for CBF interface connection present in the system.
juniCbfIfConnEntry	1.3.6.1.4.1.4874.2.2.52.1.1.4.1		not-accessible	Each entry defines a CBF connection.
NUM juniCbfIfIngressIfIndex	1.3.6.1.4.1.4874.2.2.52.1.1.4.1.1	InterfaceIndex	not-accessible	The ifIndex of the ingress interface for the CBF connection. When creating entries in this table, suitable values for this object are walking the juniCbfIfTable and picking the appropriate juniCbfIfIndex.
ROW juniCbfIfConnRowStatus	1.3.6.1.4.1.4874.2.2.52.1.1.4.1.2	RowStatus	read-create	Controls creation/deletion of entries in this table according to the RowStatus textual convention, constrained to support the following values only: createAndGo destroy To create an entry in this table, the following entry objects MUST be explicitly configured: juniCbfIfRowStatus juniCbfIfIngressIfIndex Once created, the following objects may not be modified: juniCbfIfIngressIfIndex
NUM juniCbfIfEgressIfIndex	1.3.6.1.4.1.4874.2.2.52.1.1.4.1.3	InterfaceIndex	read-create	The ifIndex of the egress interface for the CBF interface. When creating entries in this table, suitable values for this object are walking the juniCbfIfTable and picking the appropriate juniCbfIfIndex.
juniCbfConformance	1.3.6.1.4.1.4874.2.2.52.4
juniCbfCompliances	1.3.6.1.4.1.4874.2.2.52.4.1
juniCbfCompliance	1.3.6.1.4.1.4874.2.2.52.4.1.1			The compliance statement for entities which implement the Juniper CBF MIB.
juniCbfGroups	1.3.6.1.4.1.4874.2.2.52.4.2
juniCbfGroup	1.3.6.1.4.1.4874.2.2.52.4.2.1			A collection of objects providing management of CBF interfaces in a Juniper product.

RFC description

Manages connection-based forwarding interface creation and configuration for Juniper routers.

Start monitoring Juniper E-series broadband access router (Class/Connection-Based Forwarding) 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 Juniper-CBF-MIB

What Is Juniper-CBF-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description