TN-PORT-MIB

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Organization: Transition Networks, Inc.

Last Updated: 2013-06-13

Category: Port and Interface Management, Transition Networks Media Converters

Description: Manages Transition Networks media converter port configuration, speed, duplex, and statistics.

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What Is TN-PORT-MIB?

TN-PORT-MIB is a Transition Networks proprietary module for configuring and monitoring physical Ethernet port parameters on their media converters and switches. It exposes per-port configuration and operational state including configured versus current speed, flow control settings (current, Rx, Tx), excessive collision handling mode, and port power control. Its core monitoring use is hardware/interface health: administrators can compare configured versus actual negotiated speed to detect autonegotiation mismatches, monitor flow control activity to spot congestion, and check port power state to confirm a port or attached PHY is powered and operational. It works alongside the standard IF-MIB for generic interface counters and identifiers, adding vendor-specific physical-layer detail. It is deployed on media converter and switch hardware in industrial, telecom, or enterprise environments where physical-layer link quality and power state need close tracking. Network engineers evaluating or troubleshooting this functionality can download the TN-PORT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in TN-PORT-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

Transition Networks media converter
Transition Networks managed Ethernet switch

Monitoring Examples

An administrator would poll tnPortConfigTable to compare tnPortSpeedConfigured against tnPortSpeedCurrent to detect a port that failed to negotiate its intended speed, and check tnPortFlowControlCurrentRx/Tx to see if a port is actively pausing traffic due to congestion. Monitoring tnPortPowerControl reveals whether a port has been administratively powered down, while a rising tnPortExcessiveCollisionMode counter or triggered mode would flag a duplex mismatch or cabling fault on a half-duplex link.

What Can Be Monitored

configured vs. current port speed
flow control status (Rx/Tx)
excessive collision mode
port power control state

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-SMI

OBJECT-TYPE

From SNMPv2-TC

DisplayString
TruthValue

From TRANSITION-SMI

tnProducts

OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
tnPortMIB	1.3.6.1.4.1.868.2.5.141			The mib module for managing configuration of port.
tnPortMibNotifications	1.3.6.1.4.1.868.2.5.141.0
tnPortMibObjects	1.3.6.1.4.1.868.2.5.141.1
tnPortConfigTable	1.3.6.1.4.1.868.2.5.141.1.1		not-accessible	This table displays current port configurations.
tnPortConfigEntry	1.3.6.1.4.1.868.2.5.141.1.1.1		not-accessible	Each entry represents a port configuration.
INT tnPortSpeedConfigured	1.3.6.1.4.1.868.2.5.141.1.1.1.1	INTEGER	read-write	Selects any available link speed for the given switch port. Only speeds supported by the specific port is shown. Possible speeds are: Disabled - Disables the switch port operation. Auto - Port auto negotiating speed with the link partner and selects the highest speed that is compatible with the link partner. 10Mbps HDX - Forces the port in 10Mbps half duplex mode. 10Mbps FDX - Forces the port in 10Mbps full duplex mode. 100Mbps HDX - Forces the port in 100Mbps half duplex mode. 100Mbps FDX - Forces the port in 100Mbps full duplex mode. 1Gbps FDX - Forces the port in 1Gbps full duplex mode. 2.5Gbps FDX - Forces the port in 2.5Gbps full duplex mode 10Gbps FDX - Forces the port in 10Gbps full duplex mode.
INT tnPortSpeedCurrent	1.3.6.1.4.1.868.2.5.141.1.1.1.2	INTEGER	read-only	Provides the current link speed of the port. Unknown - Link down. 10Mbps HDX - Forces the port in 10Mbps half duplex mode. 10Mbps FDX - Forces the port in 10Mbps full duplex mode. 100Mbps HDX - Forces the port in 100Mbps half duplex mode. 100Mbps FDX - Forces the port in 100Mbps full duplex mode. 1Gbps FDX - Forces the port in 1Gbps full duplex mode. 2.5Gbps FDX - Forces the port in 2.5Gbps full duplex mode 10Gbps FDX - Forces the port in 10Gbps full duplex mode.
T/F tnPortFlowControlCurrentConfigured	1.3.6.1.4.1.868.2.5.141.1.1.1.3	TruthValue	read-write	When Auto Speed is selected on a port, this section indicates the flow control capability that is advertised to the link partner. Check the configuredto use flow control. This setting is related to the setting for Configured Link Speed.
INT tnPortFlowControlCurrentRx	1.3.6.1.4.1.868.2.5.141.1.1.1.4	INTEGER	read-only	When Auto Speed is selected on a port, this section indicates the flow control capability that is advertised to the link partner. When a fixed-speed setting is selected, that is what is used. The Current Rx indicates whether pause frames on the port are obeyed. The Rx settings are determined by the result of the last Auto-Negotiation.
INT tnPortFlowControlCurrentTx	1.3.6.1.4.1.868.2.5.141.1.1.1.5	INTEGER	read-only	When Auto Speed is selected on a port, this section indicates the flow control capability that is advertised to the link partner. When a fixed-speed setting is selected, that is what is used. The Current Tx indicates whether pause frames on the port are transmitted. The Tx settings are determined by the result of the last Auto-Negotiation.
INT tnPortExcessiveCollisionMode	1.3.6.1.4.1.868.2.5.141.1.1.1.6	INTEGER	read-write	Configure port transmit collision behavior. Discard: Discard frame after 16 collisions (default). Restart: Restart backoff algorithm after 16 collisions.
INT tnPortPowerControl	1.3.6.1.4.1.868.2.5.141.1.1.1.7	INTEGER	read-write	The Usage column shows the current percentage of the power consumption per port. The Configured column allows for changing the power savings mode parameters per port. Disabled: All power savings mechanisms disabled. ActiPHY: Link down power savings enabled. PerfectReach: Link up power savings enabled. Enabled: Both link up and link down power savings enabled.
tnPortMibConformance	1.3.6.1.4.1.868.2.5.141.2

RFC description

Manages port configuration including speed, flow control, and power settings on Transition Networks devices.

Start monitoring Transition Networks media converter, managed Ethernet switch (port speed/flow-control/power 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 TN-PORT-MIB

What Is TN-PORT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description