IEEE8021-PE-MIB

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Organization: IEEE 802.1 Working Group

Last Updated: 2012-01-22

Category: Standard: IEEE 802, Technology: Switching/L2

Description: IEEE 802.1 MIB for Port Extensions (802.1BR) managing bridge port extension for hierarchical port architectures.

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What Is IEEE8021-PE-MIB?

This is a vendor-neutral IEEE 802.1BR standards MIB for Bridge Port Extension, used to manage hierarchical port-extender architectures where a controlling bridge manages many extended ports on remote Port Extenders. It exposes a port table describing each extended port's type, upstream Cascade/Control-plane address, E-Channel ID (ECID), and per-port error/discontinuity counters. Its monitoring role centers on the health and error rate of the extended-port fabric: tracking request/response errors on both the bridge and PE side reveals control-channel communication faults between a controlling bridge and its port extenders. As an 802.1BR standard it is designed for architectures layered on top of standard 802.1Q bridging, complementing rather than replacing base bridge MIBs. It is typically deployed in data center or campus environments using port-extender/fabric-extender hardware to scale port count from a centralized controlling bridge. Engineers implementing or auditing this functionality typically reference the IEEE8021-PE-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in IEEE8021-PE-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, IEEE 802.1BR standards-based MIB, not tied to a specific manufacturer
port extender / fabric extender and controlling bridge architecture

Monitoring Examples

An operator walks ieee8021BridgePEPortTable (keyed by ieee8021BridgePEPortComponentId and ieee8021BridgePEPort) to read ieee8021BridgePEPortType, ieee8021BridgePEPortUpstreamCSPAddress, and ieee8021BridgePEPortEcid, confirming each extended port is correctly cascaded to its upstream controlling bridge. Rising ieee8021BridgePEPortRxrqErrorsBridge or ieee8021BridgePEPortRxrqErrorsPE counters, checked against ieee8021BridgePECounterDiscontinuityTime, would indicate control-plane communication errors between the bridge and a specific port extender, useful for isolating a failing cascade link.

What Can Be Monitored

extended port type and ECID
upstream cascade port address
request/response error counts (bridge and PE side)
counter discontinuity time

Imported Objects

From IEEE8021-TC-MIB

IEEE8021BridgePortNumber
IEEE8021BridgePortNumberOrZero
IEEE8021PbbComponentIdentifier
ieee802dot1mibs	OBJECT-IDENTITY

From Q-BRIDGE-MIB

PortList

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter64
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using ieee8021BridgePEPortRxrqErrorsBridge OID:

Select a device implementing IEEE8021-PE-MIB 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 ieee8021BridgePEPortRxrqErrorsBridge 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 number of PE CSP flow control overflow errors that have occured for requests on the Bridge. 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 Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ieee8021BridgePEMib	1.3.111.2.802.1.1.25			The PE MIB module for managing devices that support Bridge Port Extension. Unless otherwise indicated, the references in this MIB module are to IEEE Std 802.1BR-2012. Copyright (C) IEEE. This version of this MIB module is part of IEEE 802.1BR-2012; see the specification itself for full legal notices.
ieee8021BridgePENotifications	1.3.111.2.802.1.1.25.1
ieee8021BridgePEObjects	1.3.111.2.802.1.1.25.2
ieee8021BridgePEPortTable	1.3.111.2.802.1.1.25.2.1		not-accessible	A table that contains per port information related to Port Extension. A row is created in this table for any port on a Controlling Bridge that is extended using Port Extension, including those ports that provide communication to the Port Extenders themselves.
ieee8021BridgePEPortEntry	1.3.111.2.802.1.1.25.2.1.1		not-accessible	A list of per port Port Extension objects.
OID ieee8021BridgePEPortComponentId	1.3.111.2.802.1.1.25.2.1.1.1	IEEE8021PbbComponentIdentifier	not-accessible	The component identifier is used to distinguish between the multiple virtual bridge instances within a PBB. In simple situations where there is only a single component the default value is 1.
IEE ieee8021BridgePEPort	1.3.111.2.802.1.1.25.2.1.1.2	IEEE8021BridgePortNumber	not-accessible	The port number of the port for which this entry contains bridge management information.
INT ieee8021BridgePEPortType	1.3.111.2.802.1.1.25.2.1.1.3	INTEGER	not-accessible	The operational mode of a port participating in Port Exension. The enumerated values are: pepCascade - the port is operating as a Cascade port pepUpstream - the port is operating as an Upstream port pepExtended - the port is operating as an Extended port
MAC ieee8021BridgePEPortUpstreamCSPAddress	1.3.111.2.802.1.1.25.2.1.1.4	MacAddress	read-only	The MAC address used for communication of the PE CSP protocol of the device connected to the upstream port of the Port Extender (which may be the Controlling Bridge or an upstream Port Extender). This provides the hierarchal relationship in a cascade of Port Extenders
IEE ieee8021BridgePEPortEcid	1.3.111.2.802.1.1.25.2.1.1.5	IEEE802BridgePEEChannelIDTC	read-only	The default ECID assigend to this port and the port on the Port Extender to which this port corresponds.
IEE ieee8021BridgePEPortNumber	1.3.111.2.802.1.1.25.2.1.1.6	IEEE8021BridgePortNumberOrZero	read-only	The Port number on the of the Port on the Port Extender, or zero for the Upstream Port.
TIM ieee8021BridgePECounterDiscontinuityTime	1.3.111.2.802.1.1.25.2.1.1.7	TimeStamp	read-only	The value of sysUpTime on the most recent occasion at which any one or more of the counters in this conceptaul row suffered a discontinuity. The relevant counters are the specific instances associated with this conceptual row of any Counter32 or Counter64 object. If no such discontinuities have occurred since the last re-initialization of the local management subsystem, then this object contains a zero value.
C64 ieee8021BridgePEPortRxrqErrorsBridgeEx	1.3.111.2.802.1.1.25.2.1.1.8	Counter64	read-only	The number of PE CSP flow control overflow errors that have occured for requests on the Bridge.
C64 ieee8021BridgePEPortRxrspErrorsBridge	1.3.111.2.802.1.1.25.2.1.1.9	Counter64	read-only	The number of PE CSP flow control overflow errors that have occured for responses on the Bridge.
C64 ieee8021BridgePEPortRxrqErrorsPE	1.3.111.2.802.1.1.25.2.1.1.10	Counter64	read-only	The number of PE CSP flow control overflow errors that have occured for requests on the Port Extender.
C64 ieee8021BridgePEPortRxrspErrorsPE	1.3.111.2.802.1.1.25.2.1.1.11	Counter64	read-only	The number of PE CSP flow control overflow errors that have occured for responses on the Port Extender.
T/F ieee8021BridgePEPCP	1.3.111.2.802.1.1.25.2.1.1.12	TruthValue	read-only	Indicates whether the Port Exender supports modification of the priority code point table (true) or not (false).
T/F ieee8021BridgePEROW	1.3.111.2.802.1.1.25.2.1.1.13	TruthValue	read-only	Indicates whether the Port Extender supports rows in the PCP table in addition to the 8P0D row (true)or not (false).
T/F ieee8021BridgePEDEI	1.3.111.2.802.1.1.25.2.1.1.14	TruthValue	read-only	Indicates whether the Port Extender supports encoding of the Drop Eligible Indicatior (true) or not (false).
T/F ieee8021BridgePECN	1.3.111.2.802.1.1.25.2.1.1.15	TruthValue	read-only	Indicates whether the Port Extender supports Congestion Notification (true) or not (false).
T/F ieee8021BridgePEPFC	1.3.111.2.802.1.1.25.2.1.1.16	TruthValue	read-only	Indicates whether the Port Extender supports Priority-based flow control(true) or not (false).
U32 ieee8021BridgePEExtPortEChannelsSupported	1.3.111.2.802.1.1.25.2.1.1.17	Unsigned32	read-only	Indicates the number of Extended Port E-channels supported by the Port Extender.
U32 ieee8021BridgePERemoteRepEChannelsSupported	1.3.111.2.802.1.1.25.2.1.1.18	Unsigned32	read-only	Indicates the number of Remote Replication E-channels supported by the Port Extender.
U32 ieee8021BridgePETCsSupported	1.3.111.2.802.1.1.25.2.1.1.19	Unsigned32	read-only	Indicates the number of traffic clasees supported by the Port Extender.
U32 ieee8021BridgePEUtVLANsSupported	1.3.111.2.802.1.1.25.2.1.1.20	Unsigned32	read-only	Indicates the number of untagged VLANs supported by the Port Extender.
ieee8021BridgePERemoteReplicationTable	1.3.111.2.802.1.1.25.2.2		not-accessible	A table that contains one row for each Remote Replication entry in the filtering database.
ieee8021BridgePERemoteReplicationEntry	1.3.111.2.802.1.1.25.2.2.1		not-accessible	A list of Remote Replication objects.
IEE ieee8021BridgePERREcid	1.3.111.2.802.1.1.25.2.2.1.1	IEEE802BridgePEEChannelIDTC	not-accessible	The ECID assigend to this Remote Replication filtering entry.
POR ieee8021BridgePERRPortMap	1.3.111.2.802.1.1.25.2.2.1.2	PortList	read-only	The list of ports to which a frame is to be replicated.
ieee8021BridgePEETSTable	1.3.111.2.802.1.1.25.2.3		not-accessible	A table that contains per port information related to Enhanced Transmission Selection. A row is created in this table for any port on a Controlling Bridge that corresponds to a Cascade Port. These objects refer to the ETS configuration of the attached Upstream Port
ieee8021BridgePEETSEntry	1.3.111.2.802.1.1.25.2.3.1		not-accessible	A list of per Cascade Port ETS objects.
IEE ieee8021BridgePEETSTrafficClass	1.3.111.2.802.1.1.25.2.3.1.1	IEEE802BridgePETrafficClassValueTC	not-accessible	Indicates the traffic class to which this bandwidth applies
IEE ieee8021BridgePEETSTrafficSelectionAlgorthm	1.3.111.2.802.1.1.25.2.3.1.2	IEEE802BridgePETrafficSelectionAlgorithmTC	read-write	Inticates the Traffic Selection Algorthm assigned to this traffic class
IEE ieee8021BridgePEETSBandwidth	1.3.111.2.802.1.1.25.2.3.1.3	IEEE802BridgePETrafficClassBandwidthValue	read-write	Indicates the bandwidth assigned to this traffic class.
ieee8021BridgePEConformance	1.3.111.2.802.1.1.25.3
ieee8021BridgePEGroups	1.3.111.2.802.1.1.25.3.1
ieee8021BridgePEGroup	1.3.111.2.802.1.1.25.3.1.1			The collection of objects used to represent Port Extension management objects.
ieee8021BridgePECompliances	1.3.111.2.802.1.1.25.3.2
ieee8021BridgePECompliance	1.3.111.2.802.1.1.25.3.2.1			The compliance statement for devices supporting PE as defined in IEEE 802.1BR.

RFC description

IEEE 802.1BR Provider Edge bridge port extension MIB for managing E-Channel identifiers and traffic classification.

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Download IEEE8021-PE-MIB