DGS-3620-28TC-L3MGMT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DGS-3620-28TC-L3MGMT-MIB

Last Updated: 2013-08-26

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

Description: L3 management MIB for D-Link DGS-3620-28TC switch covering routing, OSPF, VRRP, and advanced L3 management objects.

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What Is DGS-3620-28TC-L3MGMT-MIB?

DGS-3620-28TC-L3MGMT-MIB is a D-Link vendor MIB providing Layer 3 management for the D-Link DGS-3620-28TC switch, a higher-end managed Gigabit switch in D-Link's line with routing capability, covering OSPF equal-cost multipath (ECMP) and route preference alongside VRRP-style redundancy concepts. It exposes OSPF ECMP hashing/state configuration and route preference settings for the switch's routing engine. For monitoring it is used to track routing software status: whether OSPF ECMP load balancing is enabled and correctly hashing traffic (by CRC/port-hash method), and gateway redundancy failover state, both critical to ensuring traffic continues flowing correctly across redundant L3 paths. It is a proprietary enterprise MIB paralleling standards-based OSPF-MIB and VRRP-MIB concepts, typically deployed alongside those or MIB-II objects for a fuller routing picture. It is deployed on DGS-3620-28TC switches used as L3 distribution/aggregation switches in mid-size enterprise or campus networks needing OSPF and redundancy. Engineers can download the DGS-3620-28TC-L3MGMT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in DGS-3620-28TC-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-3620-28TC managed Gigabit switch

Monitoring Examples

An admin would poll swL3OspfECMPState and swL3OspfECMPTCPorUDPport to confirm equal-cost multipath load balancing is active and using the expected hashing method (e.g., based on TCP/UDP port) across redundant OSPF paths, and swL3OspfECMPCrcHigh to check the CRC-based hash distribution. Checking swL3RoutePreference would confirm the administrative distance ordering between routing sources (e.g., static vs. OSPF) matches the intended design, catching a misconfiguration where an unintended route source is being preferred. Since the switch supports gateway redundancy, this L3 MIB would typically be polled alongside redundancy-protocol state objects to confirm failover functions correctly during a simulated test.

What Can Be Monitored

  • OSPF ECMP state and hashing method
  • route preference/administrative distance
  • VRRP redundancy status
  • L3 routing configuration
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-Dgs3620-28TC

How to Use in IPNetwork Monitor

Example using swL3ospfVirtIfEvents OID:

Select a D-Link managed 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

D-Link switch Layer 3 management MIB for IPv4/IPv6 routing, OSPF, RIP, VRRP, and DHCP.

Start monitoring D-Link managed 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-3620-28TC-L3MGMT-MIB