DLINK-3100-POLICY-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DLINK-3100-POLICY-MIB

Organization: Dlink, Inc.

Last Updated: 2006-06-26

Category: Technology: QoS, Vendor: D-Link

Description: Defines policy-based network management objects for traffic classification and enforcement on D-Link 3100 series switches.

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What Is DLINK-3100-POLICY-MIB?

DLINK-3100-POLICY-MIB is a proprietary D-Link MIB for the 3100 series switches defining the switch's low-level policy/ACL classification engine, including flow classifiers, offset groups, and OMPC (offset-mask-pattern-compare) rules used to match packets for QoS or security policy enforcement. It exposes classifier capability parameters (permitted offset types, additional match criteria, operator limits) and the actual classifier and rules trees, rather than traffic counters. Its main use for software-status monitoring is confirming that the policy engine is correctly provisioned and reporting accurate platform-dependent capability limits, since a mismatch here explains why a classification rule silently fails to match. It is a self-contained private MIB with no explicit dependency on IETF policy standards, though it plays a role analogous to Diffserv PIB concepts. It is deployed on D-Link 3100 series switches wherever administrators build custom traffic-classification ACLs for QoS or access control. Engineers can download the DLINK-3100-POLICY-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DLINK-3100-POLICY-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 DES-3100/DGS-3100 series switches

Monitoring Examples

An engineer troubleshooting a misbehaving ACL would read rlPolicyClassifierPermittedOffsetTypes and rlPolicyClassifierAdditionalCriteriaSupported to confirm what match criteria the hardware actually supports, then inspect entries under rlPolicyClassifier and rlPolicyRules to see which rules are currently installed. Checking rlPolicyMaxOMPCLengthForBiggerSmallerOperation against a rule's configured length explains why a greater-than/less-than match silently fails. rlPolicyClassifierPlatDependParams would be consulted when the same policy behaves differently across switch hardware variants.

What Can Be Monitored

  • installed classification rules
  • supported offset/match criteria
  • OMPC operator limits
  • platform-dependent classifier parameters
  • policy MIB version
Imported Objects

From DIFF-SERV-MIB

diffServClassifierEntryOBJECT-TYPE

From DLINK-3100-MIB

Percents
VlanPriority
rndMODULE-IDENTITY

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From Q-BRIDGE-MIB

PortList
VlanId

From SNMPv2-SMI

Counter32
Counter64
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32
zeroDotZero

From SNMPv2-TC

DisplayString
RowPointer
RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using rlPolicyRulesDroppedPackets OID:

Select a D-Link DES/DGS-3100 switch 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 rlPolicyRulesDroppedPackets 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 packets blocked by this filtering rule. 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 Counter32-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, 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

RFC description

D-Link DGS3100 switch vendor-private MIB for policy-based QoS management, packet classification, and traffic rate limiting.

Start monitoring D-Link DES/DGS-3100 switches 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 DLINK-3100-POLICY-MIB