WRED-MIB

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Organization: D-Link Corp.

Last Updated: 2011-09-30

Category: D-Link QoS

Description: Manages D-Link Weighted Random Early Detection queue configuration, drop thresholds, and congestion statistics.

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What Is WRED-MIB?

WRED-MIB is a D-Link module for managing Weighted Random Early Detection (WRED) queue configuration on the switch/router's egress queues, a congestion-avoidance mechanism that proactively drops packets before queues fill completely. It exposes per-queue WRED configuration such as drop thresholds and weighting parameters, along with congestion/drop statistics. Its monitoring role is performance-oriented: tracking drop counts and threshold behavior per queue reveals whether the device is experiencing sustained congestion on particular traffic classes, which is a key software-level indicator of network stress on the device. No specific dependency on other MIBs is apparent from the minimal module description, though it logically complements standard QoS/queue MIBs. It is deployed on D-Link managed switches or routers implementing QoS-based congestion management on their egress interfaces, where a WRED-MIB download helps administrators tune per-queue drop thresholds against real congestion behavior.

IPNetwork Monitor allows you to monitor SNMP objects defined in WRED-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

D-Link managed switch/router

Monitoring Examples

No sample object or table names were extracted for this module, so specific identifiers cannot be cited; an administrator would typically poll per-queue drop-threshold configuration and drop-event counters to detect a queue experiencing sustained congestion and tune WRED parameters accordingly. Without a verified object list, further technical detail would be speculative rather than grounded in the MIB.

What Can Be Monitored

WRED queue configuration
drop thresholds
congestion/drop statistics

Imported Objects

From DLINK-ID-REC-MIB

dlink-common-mgmt

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString
RowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
swWredMIB	1.3.6.1.4.1.171.12.31			.
swWredCtrl	1.3.6.1.4.1.171.12.31.1
INT swWredGlobalState	1.3.6.1.4.1.171.12.31.1.1	INTEGER	read-write	This object enable\disable the WRED state of the device.
swWredInfo	1.3.6.1.4.1.171.12.31.2
swWredMgmt	1.3.6.1.4.1.171.12.31.3
swWredAverageTimeTable	1.3.6.1.4.1.171.12.31.3.1		not-accessible	A table that contains WRED average time for each port.
swWredAverageTimeEntry	1.3.6.1.4.1.171.12.31.3.1.1		not-accessible	A list that contains WRED average time per port.
INT swWredPortIndex	1.3.6.1.4.1.171.12.31.3.1.1.1	INTEGER	read-only	This object indicates the port number.
INT swWredAverageTime	1.3.6.1.4.1.171.12.31.3.1.1.2	INTEGER	read-write	This object indicates the time in microseconds used in average queue depth calculation (1-32768).
swWredCtrlTable	1.3.6.1.4.1.171.12.31.3.2		not-accessible	A table that contains WRED drop setting for each port.
swWredCtrlEntry	1.3.6.1.4.1.171.12.31.3.2.1		not-accessible	A list that contains WRED drop setting per port.
INT swWredCtrlPortIndex	1.3.6.1.4.1.171.12.31.3.2.1.1	INTEGER	read-only	This object indicates the port number.
INT swWredCtrlClassIndex	1.3.6.1.4.1.171.12.31.3.2.1.2	INTEGER	read-only	This object indicates the cos queue number (0-7).
INT swWredCtrlDropStart	1.3.6.1.4.1.171.12.31.3.2.1.3	INTEGER	read-write	This object indicates the percentage of queue size to start dropping (0-100).
INT swWredCtrlDropSlope	1.3.6.1.4.1.171.12.31.3.2.1.4	INTEGER	read-write	This object indicates the Degrees (0..90) describing the drop probability slope (0-90). When set the slope zero, it like disable the wred of the cos queue.
INT swWredAllPortAverageTime	1.3.6.1.4.1.171.12.31.3.3	INTEGER	read-write	This object configure the time in microseconds used in average queue depth calculation (1-32768) to all port. This return value while read request will be always 0.
swWredProfileTable	1.3.6.1.4.1.171.12.31.3.4		not-accessible	A table that contains WRED Profile Entrys.
swWredProfileEntry	1.3.6.1.4.1.171.12.31.3.4.1		not-accessible	A list that contains WRED profile entrys.
INT swWredProfileIndex	1.3.6.1.4.1.171.12.31.3.4.1.1	INTEGER	read-only	This object indicates the profile number,the minimum value should be 2 and the maximum value is depended on project.
STR swWredProfileName	1.3.6.1.4.1.171.12.31.3.4.1.2	DisplayString	read-create	This object indicates the profile name,The profile name can not be same.
ROW swWredProfileRowStatus	1.3.6.1.4.1.171.12.31.3.4.1.3	RowStatus	read-create	This object indicates the status of this entry.
swWredProfileCfgTable	1.3.6.1.4.1.171.12.31.3.5		not-accessible	A table that contains WRED profile every parameter.
swWredProfileCfgEntry	1.3.6.1.4.1.171.12.31.3.5.1		not-accessible	A list that contains WRED profile parameter for each profile.
INT swWredProfileCfgIndex	1.3.6.1.4.1.171.12.31.3.5.1.1	INTEGER	read-only	This object indicates the profile number.
INT swWredProfileCfgPacketType	1.3.6.1.4.1.171.12.31.3.5.1.2	INTEGER	read-only	This object indicates the profile packet type.
INT swWredProfileCfgPacketColor	1.3.6.1.4.1.171.12.31.3.5.1.3	INTEGER	read-only	This object indicates the profile packet color.
INT swWredProfileCfgMinThreshold	1.3.6.1.4.1.171.12.31.3.5.1.4	INTEGER	read-write	This object indicates the percentage of queue size to start dropping (0-100).
INT swWredProfileCfgMaxThreshold	1.3.6.1.4.1.171.12.31.3.5.1.5	INTEGER	read-write	This object indicates the percentage of queue size over which WRED will drop all packets (0-100).
INT swWredProfileCfgMaxDropRate	1.3.6.1.4.1.171.12.31.3.5.1.6	INTEGER	read-write	This object indicates the drop probability that the percentage of queue size reaches max threshold.
swWredPortProfileTable	1.3.6.1.4.1.171.12.31.3.6		not-accessible	A table that contains ports WRED profile binded.
swWredPortProfileEntry	1.3.6.1.4.1.171.12.31.3.6.1		not-accessible	A list that contains port and WRED profile id.
INT swWredPortProfilePortIndex	1.3.6.1.4.1.171.12.31.3.6.1.1	INTEGER	read-only	This object indicates the port number.
INT swWredPortProfileClassIndex	1.3.6.1.4.1.171.12.31.3.6.1.2	INTEGER	read-only	This object indicates the hardware priority queue number (0-7).
INT swWredPortProfileId	1.3.6.1.4.1.171.12.31.3.6.1.3	INTEGER	read-write	This object indicates profile ID that port and queue binded, the minimum value should be 1 and the maximum is depended on project.
INT swWredPortWeightNum	1.3.6.1.4.1.171.12.31.3.6.1.4	INTEGER	read-write	This object indicates weight number that port and queue set, the minimum value should be 1 and the maximum is depended on project.

RFC description

Configures Weighted Random Early Detection (WRED) queue management for congestion avoidance and traffic shaping.

Start monitoring D-Link managed switch/router (per-queue WRED drop-threshold/congestion 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 WRED-MIB

What Is WRED-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

RFC description