Unisphere-Data-CBF-MIB

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Organization: Unisphere Networks, Inc.

Last Updated: 2001-03-30

Category: Juniper Unisphere ERX Routing

Description: Manages Unisphere ERX class-based forwarding policies, traffic classification, and queue management.

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What Is Unisphere-Data-CBF-MIB?

Unisphere-Data-CBF-MIB is a proprietary MIB from Unisphere Networks (later acquired into Juniper's E-series) for managing Connection-Based Forwarding (CBF), a traffic classification and per-connection queue/policy forwarding feature on their ERX Routing Switch family. It exposes an interface table (mapping CBF-enabled interfaces to their lower-layer interface index and row status) and a connection table describing per-connection forwarding entries including ingress and egress interface indices. Its monitoring value is software/configuration status of the forwarding policy layer: confirming which interfaces have CBF enabled, whether connection-level forwarding entries are correctly established (row status active vs. not-in-service), and the ingress/egress interface pairing for each classified connection, rather than physical hardware metrics. It depends on the underlying standard IF-MIB ifIndex values for referencing physical/logical interfaces, and is paired with the Unisphere-Data-CBF-CONF conformance module. It is deployed on Unisphere/Juniper ERX Routing Switch platforms used by service providers for connection-based traffic classification and forwarding, and administrators typically use a Unisphere-Data-CBF-MIB MIB Browser session to inspect these tables directly.

IPNetwork Monitor allows you to monitor SNMP objects defined in Unisphere-Data-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

Unisphere Networks (Juniper) ERX Routing Switch

Monitoring Examples

An admin would walk usdCbfIfTable (usdCbfIfEntry rows keyed by usdCbfIfIndex) to confirm usdCbfIfRowStatus is active for each interface where CBF should be enabled, cross-referencing usdCbfIfLowerIfIndex against the standard interface table. Walking usdCbfIfConnTable (usdCbfIfConnEntry) reveals per-connection usdCbfIfIngressIfIndex and usdCbfIfEgressIfIndex pairings and usdCbfIfConnRowStatus; a connection entry stuck in a non-active row status would indicate a forwarding policy failed to instantiate correctly.

What Can Be Monitored

CBF-enabled interface list and row status
per-connection ingress/egress interface mapping
connection forwarding entry status
next available CBF interface index

Imported Objects

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus

From Unisphere-Data-MIBs

usDataMibs

MODULE-IDENTITY

From Unisphere-Data-TC

UsdNextIfIndex

OIDs

OID symbolic	OID numeric	Type	Access	Description
usdCbfMIB	1.3.6.1.4.1.4874.2.2.52			The Connection-Based Forwarding (CBF) Protocol MIB for the Unisphere Networks Inc. enterprise.
usdCbfObjects	1.3.6.1.4.1.4874.2.2.52.1
usdCbfInterface	1.3.6.1.4.1.4874.2.2.52.1.1
USD usdCbfNextIfIndex	1.3.6.1.4.1.4874.2.2.52.1.1.1	UsdNextIfIndex	read-only	Coordinate ifIndex value allocation for entries in usdCbfIfTable. 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.
usdCbfIfTable	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.
usdCbfIfEntry	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/usdIfTable.
NUM usdCbfIfIndex	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 usdCbfNextIfIndex.
ROW usdCbfIfRowStatus	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: usdCbfIfRowStatus usdCbfIfLowerIfIndex In addition, when creating an entry the following conditions must hold: A value for usdCbfIfIndex must have been determined previously, typically by reading usdCbfNextIfIndex. The interface identified by a nonzero usdCbfIfLowerIfIndex must exist. Once created, the following objects may not be modified: usdCbfIfLowerIfIndex A corresponding entry in ifTable/ifXTable/usdIfTable is created/destroyed as a result of creating/destroying an entry in this table.
NUM usdCbfIfLowerIfIndex	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.
usdCbfIfConnTable	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.
usdCbfIfConnEntry	1.3.6.1.4.1.4874.2.2.52.1.1.4.1		not-accessible	Each entry defines a CBF connection.
NUM usdCbfIfIngressIfIndex	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 usdCbfIfTable and picking the appropriate usdCbfIfIndex.
ROW usdCbfIfConnRowStatus	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: usdCbfIfRowStatus usdCbfIfIngressIfIndex Once created, the following objects may not be modified: usdCbfIfIngressIfIndex
NUM usdCbfIfEgressIfIndex	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 usdCbfIfTable and picking the appropriate usdCbfIfIndex.
usdCbfConformance	1.3.6.1.4.1.4874.2.2.52.4
usdCbfCompliances	1.3.6.1.4.1.4874.2.2.52.4.1
usdCbfCompliance	1.3.6.1.4.1.4874.2.2.52.4.1.1			The compliance statement for entities which implement the Unisphere CBF MIB.
usdCbfGroups	1.3.6.1.4.1.4874.2.2.52.4.2
usdCbfGroup	1.3.6.1.4.1.4874.2.2.52.4.2.1			A collection of objects providing management of CBF interfaces in a Unisphere product.

RFC description

Connection-Based Forwarding protocol configuration and interface management for Unisphere routers.

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Download Unisphere-Data-CBF-MIB

What Is Unisphere-Data-CBF-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description