DGS-3620-52P-L3MGMT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DGS-3620-52P-L3MGMT-MIB

Last Updated: 2013-08-26

Category: Technology: PoE, Technology: Routing/L3, Vendor: D-Link

Description: L3 management MIB for D-Link DGS-3620-52P PoE switch covering routing protocols, multicast, and Layer 3 management.

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What Is DGS-3620-52P-L3MGMT-MIB?

This is a D-Link proprietary MIB module that defines Layer 3 network management information for the DGS-3620-52P series, a stackable Gigabit PoE switch with routing capability. It exposes configuration and status data for Layer 3 features such as OSPF equal-cost multipath (ECMP) routing, route preference tables, and general L3 forwarding behavior. Administrators use it to monitor the operational health of the routing subsystem, including whether ECMP paths are correctly load-balanced and whether OSPF adjacencies and route selection are behaving as expected, which is critical for detecting routing loops, blackholes, or misconfigured route preferences. It works alongside standard IETF routing MIBs (such as OSPF-MIB) but adds D-Link-specific extensions like per-path CRC and port hashing details not covered by standard MIBs. It is typically deployed in enterprise or campus core/distribution layer networks where the DGS-3620-52P acts as a Layer 3 PoE switch handling both routing and power delivery to access devices. Engineers can download the DGS-3620-52P-L3MGMT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DGS-3620-52P-L3MGMT-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 DGS-3620-52P Layer 3 PoE switch

Monitoring Examples

An administrator polling swL3OspfECMPState across ECMP path entries can confirm that multiple equal-cost OSPF routes are active and correctly balancing traffic; a stuck or inactive state on one path signals a hashing or link failure. Fields like swL3OspfECMPCrcHigh and swL3OspfECMPTCPorUDPport reveal how the switch's load-balancing hash incorporates transport-layer information, useful for diagnosing uneven traffic distribution across uplinks. Checking swL3RoutePreference values helps confirm that static, OSPF, or other route sources are being prioritized as intended when multiple protocols advertise the same destination.

What Can Be Monitored

  • OSPF ECMP path state
  • ECMP hashing parameters (CRC, TCP/UDP port)
  • route preference by protocol source
  • Layer 3 routing table entries
  • OSPF link-state database management
Imported Objects

From IF-MIB

InterfaceIndex

From IPV6-TC

Ipv6Address

From OSPF-MIB

AreaID
DesignatedRouterPriority
HelloRange
Metric
PositiveInteger
RouterID
Status
TOSType
UpToMaxAge

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
PhysAddress
RowStatus
TimeStamp
TruthValue

From SWDGS3620PRIMGMT-MIB

dlink-Dgs3620Proj-Dgs3620-52P

How to Use in IPNetwork Monitor

Example using swL3ospfVirtIfEvents OID:

Select a D-Link Layer 3 PoE 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 swL3ospfVirtIfEvents 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 state changes or error events on this Virtual Link. 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 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

RFC description

Manages Layer 3 routing features on D-Link DGS-3620-52P including OSPF, RIP, DHCPv6, and IPv6 configuration.

Start monitoring D-Link Layer 3 PoE 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 DGS-3620-52P-L3MGMT-MIB