IEEE8021-TPMR-MIB

All MIBs › IEEE8021-TPMR-MIB

Organization: IEEE 802.1 Working Group

Last Updated: 2018-06-28

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

Description: IEEE 802.1 MIB for Two-Port MAC Relay (TPMR/802.1aj) managing simple two-port Ethernet relaying functions.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock 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.

What Is IEEE8021-TPMR-MIB?

IEEE8021-TPMR-MIB is a vendor-neutral IEEE 802.1Q standards MIB (802.1aj) for Two-Port MAC Relay (TPMR) devices, simple two-port Ethernet relay functions often used in link-layer security or provider-bridging edge scenarios. It exposes per-port management address and forwarding-behavior configuration alongside a statistics table of frame and octet counters. It is explicitly useful for performance and fault monitoring: ieee8021TpmrPortStatsRxFrames/RxOctets and FramesForwarded give throughput visibility, while ieee8021TpmrPortStatsFramesDiscarded and FramesDiscardedQueueFull are direct fault/congestion indicators showing when the relay is dropping traffic, including specifically due to queue exhaustion. As an official IEEE 802.1Q MIB it is standards-based and intended to be implemented alongside other 802.1 bridge MIBs on a compliant device. It is used on any standards-compliant two-port relay device, typically found embedded in security appliances or simple Ethernet extension/aggregation equipment, and the IEEE8021-TPMR-MIB reference remains the definitive source engineers consult when implementing or validating standards-compliant TPMR behavior.

IPNetwork Monitor allows you to monitor SNMP objects defined in IEEE8021-TPMR-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; applies to IEEE 802.1Q-compliant two-port MAC relay devices

Monitoring Examples

The ieee8021TpmrPortTable/Entry (indexed by ieee8021TpmrPortNumber) exposes ieee8021TpmrPortMgmtAddr and ieee8021TpmrPortMgmtAddrForwarding for management-address handling on each of the two ports. An administrator would poll the paired ieee8021TpmrPortStatsTable/Entry's ieee8021TpmrPortStatsRxFrames and FramesForwarded counters against FramesDiscarded and FramesDiscardedQueueFull to detect a relay that is silently dropping frames because of queue overflow, which would show as discard counters climbing while forwarded-frame growth stalls, indicating a capacity or misconfiguration problem on that relay.

What Can Be Monitored

received frames/octets per port
frames forwarded
frames discarded
frames discarded due to queue full
management address forwarding behavior

Imported Objects

From IEEE8021-BRIDGE-MIB

ieee8021BridgeBasePortComponentId

OBJECT-TYPE

From IEEE8021-TC-MIB

IEEE8021BridgePortNumber
ieee802dot1mibs	OBJECT-IDENTITY

From IF-MIB

ifCounterDiscontinuityGroup

OBJECT-GROUP

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
StorageType
TEXTUAL-CONVENTION
TimeInterval
TruthValue

How to Use in IPNetwork Monitor

Example using ieee8021TpmrPortStatsRxFrames OID:

Select a device implementing IEEE8021-TPMR-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 ieee8021TpmrPortStatsRxFrames 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. It reports the count of all valid frames received on this port (including BPDUs, frames addressed to the TPMR as an end station, and frames that were submitted to the Forwarding Process). 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 sharply between polls relative to its normal baseline (in frames), since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ieee8021TpmrMib	1.3.111.2.802.1.1.14			Two-Port MAC Relay (TPMR) MIB module. Unless otherwise indicated, the references in this MIB module are to IEEE Std 802.1Q. Copyright(c) IEEE (2018) This MIB module is part of IEEE Std 802.1Q; refer to the document itself for full legal notices.
ieee8021TpmrNotifications	1.3.111.2.802.1.1.14.0
ieee8021TpmrObjects	1.3.111.2.802.1.1.14.1
ieee8021TpmrPortTable	1.3.111.2.802.1.1.14.1.1		not-accessible	The TPMR port table. Each row in the table represents a TPMR port. By definition there are two ports per TPMR. Note that the indices of this table are equivalent to those of the ieee8021BridgeBasePortTable in the IEEE8021-BRIDGE-MIB, with ieee8021TpmrPortNumber having a more limited value range than ieee8021BridgeBasePort.
ieee8021TpmrPortEntry	1.3.111.2.802.1.1.14.1.1.1		not-accessible	A TPMR port table entry.
IEE ieee8021TpmrPortNumber	1.3.111.2.802.1.1.14.1.1.1.1	IEEE8021BridgePortNumber	not-accessible	The number of this TPMR port.
T/F ieee8021TpmrPortMgmtAddr	1.3.111.2.802.1.1.14.1.1.1.2	TruthValue	read-only	Is 'true' if the TPMR port MAC address is the management address of the TPMR, otheriwse 'false'.
T/F ieee8021TpmrPortMgmtAddrForwarding	1.3.111.2.802.1.1.14.1.1.1.3	TruthValue	read-only	Is 'true' if forwarding is enabled for frames destined to the management address of the TPMR, otherwise 'false'.
ieee8021TpmrPortStatsTable	1.3.111.2.802.1.1.14.1.2		not-accessible	The TPMR port statistics table. Each row in the table represents a TPMR port. By definition there are two ports per TPMR. Discontinuities in the value of counters in this table can occur at re-initialization of the management system, and at other times as indicated by the value of IF-MIB ifCounterDiscontinuityTime.
ieee8021TpmrPortStatsEntry	1.3.111.2.802.1.1.14.1.2.1		not-accessible	A TPMR port counters table entry.
C64 ieee8021TpmrPortStatsRxFramesEx	1.3.111.2.802.1.1.14.1.2.1.1	Counter64	read-only	Count of all valid frames received on this port (including BPDUs, frames addressed to the TPMR as an end station, and frames that were submitted to the Forwarding Process).
C64 ieee8021TpmrPortStatsRxOctets	1.3.111.2.802.1.1.14.1.2.1.2	Counter64	read-only	Count of the total number of octets in all valid frames received on this port (including BPDUs, frames addressed to the TPMR as an end station, and frames that were submitted to the Forwarding Process).
C64 ieee8021TpmrPortStatsFramesForwarded	1.3.111.2.802.1.1.14.1.2.1.3	Counter64	read-only	Count of all frames that were received on this port and were forwarded to the transmission port.
C64 ieee8021TpmrPortStatsFramesDiscarded	1.3.111.2.802.1.1.14.1.2.1.4	Counter64	read-only	Count of all frames that were received on this port but were discarded by the Forwarding Process for any reason.
C64 ieee8021TpmrPortStatsFramesDiscardedQueueFull	1.3.111.2.802.1.1.14.1.2.1.5	Counter64	read-only	Count of all frames received on this port that were to be transmitted through the transmission port but were discarded due to lack of available queue space.
C64 ieee8021TpmrPortStatsFramesDiscardedLifetime	1.3.111.2.802.1.1.14.1.2.1.6	Counter64	read-only	Count of all frames received on this port that were to be transmitted through the transmission port but were discarded due to their frame lifetime having been exceeded.
C64 ieee8021TpmrPortStatsFramesDiscardedError	1.3.111.2.802.1.1.14.1.2.1.7	Counter64	read-only	Count of all frames received on this port that were to be transmitted through the transmission port but could not be transmitted (e.g., frame too large).
ieee8021TpmrPortDiscardDetailsTable	1.3.111.2.802.1.1.14.1.3		not-accessible	The TPMR frames discard details table. Each row in the table represents a discarded frame on a TPMR port. By definition there are two ports per TPMR. This table is maintained as a FIFO. A new entry is inserted in the first row, and existing entries are shuffled down, with the last entry being discarded. Because of the FIFO behavior, the relationship between the index and contents will change when an entry is added to the table. This may result in apparent duplication of row content during a table traversal.
ieee8021TpmrPortDiscardDetailsEntry	1.3.111.2.802.1.1.14.1.3.1		not-accessible	A TPMR frames discarded error details table entry.
U32 ieee8021TpmrPortDiscardDetailsIndex	1.3.111.2.802.1.1.14.1.3.1.1	Unsigned32	not-accessible	The second index of a TPMR frames discard details table entry.
MAC ieee8021TpmrPortDiscardDetailsSource	1.3.111.2.802.1.1.14.1.3.1.2	MacAddress	read-only	The source MAC address of the discarded frame.
IEE ieee8021TpmrPortDiscardDetailsReason	1.3.111.2.802.1.1.14.1.3.1.3	IEEE8021TpmrFrameDiscardErrorReason	read-only	The reason why the frame was discarded.
ieee8021TpmrMspTable	1.3.111.2.802.1.1.14.1.4		not-accessible	The TPMR MAC status propagation performance table. Each row in the table represents a TPMR port. By definition there are two ports per TPMR. The persistence of writable objects in a conceptual row of this table is determined by the value of the ieee8021TpmrMspStorageType object.
ieee8021TpmrMspEntry	1.3.111.2.802.1.1.14.1.4.1		not-accessible	A TPMR MAC status propagation performance table entry.
T/F ieee8021TpmrMspLinkNotify	1.3.111.2.802.1.1.14.1.4.1.1	TruthValue	read-write	The value of LinkNotify used by the MSP state machines.
NUM ieee8021TpmrMspLinkNotifyWait	1.3.111.2.802.1.1.14.1.4.1.2	TimeInterval	read-write	The value of LinkNotifyWait used by the MSP state machines.
NUM ieee8021TpmrMspLinkNotifyRetry	1.3.111.2.802.1.1.14.1.4.1.3	TimeInterval	read-write	The value of LinkNotifyRetry used by the MSP state machines.
T/F ieee8021TpmrMspMacNotify	1.3.111.2.802.1.1.14.1.4.1.4	TruthValue	read-write	The value of MacNotify used by the MSP state machines.
NUM ieee8021TpmrMspMacNotifyTime	1.3.111.2.802.1.1.14.1.4.1.5	TimeInterval	read-write	The value of MacNotifyTime used by the MSP state machines.
NUM ieee8021TpmrMspMacRecoverTime	1.3.111.2.802.1.1.14.1.4.1.6	TimeInterval	read-write	The value of MacRecoverTime used by the MSP state machines.
STO ieee8021TpmrMspStorageType	1.3.111.2.802.1.1.14.1.4.1.7	StorageType	read-write	The storage type for all read-write objects within this row. Conceptual rows having the value 'permanent' need not allow write access to any columnar objects in the row. If this object has the value 'volatile', modifications to read-write objects in this row are not persistent across reboots or restarts. If this object has the value 'nonVolatile', modifications to objects in this row are persistent.
ieee8021TpmrMspStatsTable	1.3.111.2.802.1.1.14.1.5		not-accessible	The TPMR MAC status propagation statistics table. Each row in the table represents a TPMR port. By definition there are two ports per TPMR. Discontinuities in the value of counters in this table can occur at re-initialization of the management system, and at other times as indicated by the value of IF-MIB ifCounterDiscontinuityTime.
ieee8021TpmrMspStatsEntry	1.3.111.2.802.1.1.14.1.5.1		not-accessible	A TPMR MAC status propagation statistics table entry.
C32 ieee8021TpmrMspStatsTxAcks	1.3.111.2.802.1.1.14.1.5.1.1	Counter32	read-only	The number of acks transmitted by the port's Transmit Process as a consequence of txAck being set.
C32 ieee8021TpmrMspStatsTxAddNotifications	1.3.111.2.802.1.1.14.1.5.1.2	Counter32	read-only	The number of adds transmitted by the port's Transmit Process as a consequence of txAdd being set.
C32 ieee8021TpmrMspStatsTxAddConfirmations	1.3.111.2.802.1.1.14.1.5.1.3	Counter32	read-only	The number of add confirms transmitted by the port's Transmit Process as a consequence of txAddConfirm being set.
C32 ieee8021TpmrMspStatsTxLossNotifications	1.3.111.2.802.1.1.14.1.5.1.4	Counter32	read-only	The number of losses transmitted by the port's Transmit Process as a consequence of txLoss being set.
C32 ieee8021TpmrMspStatsTxLossConfirmations	1.3.111.2.802.1.1.14.1.5.1.5	Counter32	read-only	The number of loss confirms transmitted by the port's Transmit Process as a consequence of txLossConfirm being set.
C32 ieee8021TpmrMspStatsRxAcks	1.3.111.2.802.1.1.14.1.5.1.6	Counter32	read-only	The number of acks received by the port's Receive Process.
C32 ieee8021TpmrMspStatsRxAddNotifications	1.3.111.2.802.1.1.14.1.5.1.7	Counter32	read-only	The number of adds received by the port's Receive Process.
C32 ieee8021TpmrMspStatsRxAddConfirmations	1.3.111.2.802.1.1.14.1.5.1.8	Counter32	read-only	The number of add confirms received by the port's Receive Process.
C32 ieee8021TpmrMspStatsRxLossNotifications	1.3.111.2.802.1.1.14.1.5.1.9	Counter32	read-only	The number of losses received by the port's Receive Process.
C32 ieee8021TpmrMspStatsRxLossConfirmations	1.3.111.2.802.1.1.14.1.5.1.10	Counter32	read-only	The number of loss confirms received by the port's Receive Process.
C32 ieee8021TpmrMspStatsAddEvents	1.3.111.2.802.1.1.14.1.5.1.11	Counter32	read-only	The number of transitions to STM:ADD directly from STM:DOWN or STM:LOSS.
C32 ieee8021TpmrMspStatsLossEvents	1.3.111.2.802.1.1.14.1.5.1.12	Counter32	read-only	The number of transitions to STM:LOSS directly from STM:UP or STM:ADD.
C32 ieee8021TpmrMspStatsMacStatusNotifications	1.3.111.2.802.1.1.14.1.5.1.13	Counter32	read-only	The number of transitions to SNM:MAC_NOTIFICATION.
ieee8021TpmrConformance	1.3.111.2.802.1.1.14.2
ieee8021TpmrCompliances	1.3.111.2.802.1.1.14.2.1
ieee8021TpmrCompliance	1.3.111.2.802.1.1.14.2.1.1			The compliance statement for device support of TPMR.
ieee8021TpmrGroups	1.3.111.2.802.1.1.14.2.2
ieee8021TpmrPortGroup	1.3.111.2.802.1.1.14.2.2.1			TPMR port objects.
ieee8021TpmrPortStatsGroup	1.3.111.2.802.1.1.14.2.2.2			TPMR port statistics objects.
ieee8021TpmrPortDiscardDetailsGroup	1.3.111.2.802.1.1.14.2.2.3			TPMR port discard details objects.
ieee8021TpmrMspGroup	1.3.111.2.802.1.1.14.2.2.4			TPMR port MSP objects.
ieee8021TpmrMspStatsGroup	1.3.111.2.802.1.1.14.2.2.5			TPMR port MSP statistics objects.

RFC description

Two-Port MAC Relay (TPMR) MIB module for IEEE 802.1Q bridge devices with frame relay capabilities.

Start monitoring Vendor-neutral IEEE 802.1aj standard (two-port MAC relay device) 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 IEEE8021-TPMR-MIB