Unisphere-Data-BRIDGE-ETHERNET-MIB

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Organization: Unisphere Networks, Inc.

Last Updated: 2000-09-26

Category: Juniper Unisphere ERX Routing

Description: Manages Unisphere ERX bridged Ethernet interface configuration, MAC learning, and spanning tree.

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What Is Unisphere-Data-BRIDGE-ETHERNET-MIB?

Unisphere-Data-BRIDGE-ETHERNET-MIB is a vendor-specific MIB from Unisphere Networks for the ERX family of routing switches, managing bridged Ethernet interface configuration including MAC address learning, proxy ARP, and the interface's relationship to its underlying (lower) interface layer. It exposes a bridged-Ethernet interface table with per-interface index, proxy ARP setting, lower-layer interface binding, and row status for creating/deleting bridge interface instances. Its monitoring relevance is mainly configuration and interface operational status: an operator can confirm which physical/logical interfaces are configured as bridged Ethernet, whether proxy ARP is enabled, and whether an interface's row is active, which helps troubleshoot bridging or Layer 2 forwarding problems distinct from hardware faults. It is closely tied to the ifTable indexing scheme of the standard IF-MIB, since it references lower-layer ifIndex values and its own bridged interface ifIndex. It is typically deployed on Unisphere ERX broadband routing switches used by service providers for subscriber Ethernet bridging and aggregation. Engineers can download the Unisphere-Data-BRIDGE-ETHERNET-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Unisphere-Data-BRIDGE-ETHERNET-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 ERX broadband routing switch

Monitoring Examples

An operator can walk usdBridgedEthernetIfTable and inspect each usdBridgedEthernetIfEntry's usdBridgedEthernetIfIfIndex alongside usdBridgedEthernetIfLowerIfIndex to confirm which bridged interface maps to which underlying physical interface. usdBridgedEthernetIfRowStatus reveals whether a given bridged interface entry is active, notInService, or being created/destroyed, useful when provisioning or troubleshooting a new subscriber bridge interface. usdBridgedEthernetProxyArp shows whether proxy ARP is enabled on an interface, and an unexpected setting here could explain ARP resolution failures for hosts behind the bridge.

What Can Be Monitored

bridged Ethernet interface mapping
lower-layer interface binding
interface row/provisioning status
proxy ARP setting

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
usdBridgeEthernetMIB	1.3.6.1.4.1.4874.2.2.31			The Bridge Ethernet MIB for the Unisphere Networks Inc. enterprise.
usdBridgedEthernetObjects	1.3.6.1.4.1.4874.2.2.31.1
usdBridgedEthernetIfLayer	1.3.6.1.4.1.4874.2.2.31.1.1
USD usdBridgedEthernetNextIfIndex	1.3.6.1.4.1.4874.2.2.31.1.1.1	UsdNextIfIndex	read-only	Coordinate ifIndex value allocation for entries in usdBridgedEthernetIfTable. 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.
usdBridgedEthernetIfTable	1.3.6.1.4.1.4874.2.2.31.1.1.2		not-accessible	The parameters for the BridgedEthernet service on this interface.
usdBridgedEthernetIfEntry	1.3.6.1.4.1.4874.2.2.31.1.1.2.1		not-accessible	The Parameters for a particular Bridged Ethernet interface. Creating/deleting entries in this table causes corresponding entries for be created/deleted in ifTable/ifXTable/usdIfTable
NUM usdBridgedEthernetIfIfIndex	1.3.6.1.4.1.4874.2.2.31.1.1.2.1.1	InterfaceIndex	read-only	The ifIndex value of the corresponding ifEntry.
INT usdBridgedEthernetProxyArp	1.3.6.1.4.1.4874.2.2.31.1.1.2.1.2	INTEGER	read-create	The proxyArp configuration setting for this entry. * NOTE: This MIB object has been obsoleted. *
NUM usdBridgedEthernetIfLowerIfIndex	1.3.6.1.4.1.4874.2.2.31.1.1.2.1.3	InterfaceIndexOrZero	read-create	The ifIndex of an interface over which this Bridged Ethernet interface is to be layered. A value of zero indicates no layering. An implementation may choose to require that a nonzero value be configured at entry creation.
ROW usdBridgedEthernetIfRowStatus	1.3.6.1.4.1.4874.2.2.31.1.1.2.1.4	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: usdBridgedEthernetIfRowStatus usdBridgedEthernetIfLowerIfIndex In addition, when creating an entry the following conditions must hold: A value for usdBridgedEthernetIfIndex must have been determined previously, by reading usdBridgedEthernetNextIfIndex. The interface identified by usdBridgedEthernetIfLowerIfIndex must exist, and must be an interface type that permits layering of Bridged Ethernet above it. A corresponding entry in ifTable/ifXTable/usdIfTable is created/destroyed as a result of creating/destroying an entry in this table.
usdBridgeEthernetConformance	1.3.6.1.4.1.4874.2.2.31.4
usdBridgeEthernetCompliances	1.3.6.1.4.1.4874.2.2.31.4.1
usdBridgedEthernetCompliance	1.3.6.1.4.1.4874.2.2.31.4.1.1			The compliance statement for entities which implement the Unisphere bridged Ethernet MIB.
usdBridgeEthernetGroups	1.3.6.1.4.1.4874.2.2.31.4.2
usdBridgedEthernetGroup	1.3.6.1.4.1.4874.2.2.31.4.2.1			A collection of objects providing management of Bridged Ethernet interfaces in a Unisphere product. This group became obsolete when usdBridgedEthernetProxyArp was made obsolete.
usdBridgedEthernetGroup2	1.3.6.1.4.1.4874.2.2.31.4.2.2			A collection of objects providing management of Bridged Ethernet interfaces in a Unisphere product.

RFC description

Manages bridged Ethernet sublayer interface configuration and virtual interface creation/deletion.

Start monitoring Unisphere Networks ERX broadband routing switch (bridged-Ethernet interface/proxy-ARP config status) 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 Unisphere-Data-BRIDGE-ETHERNET-MIB

What Is Unisphere-Data-BRIDGE-ETHERNET-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description