All MIBs › DLINK-3100-GMRP-MIB
Organization: Dlink, Inc. Dlink Semiconductor, Inc.
Last Updated: 2007-01-02
Category: Standard: IEEE 802, Technology: Bridging, Technology: Multicast, Vendor: D-Link
Description: Controls and monitors GARP Multicast Registration Protocol (GMRP) on D-Link 3100 series switches for dynamic multicast group membership.
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What Is DLINK-3100-GMRP-MIB?
This D-Link private MIB governs GARP Multicast Registration Protocol (GMRP) behavior on the 3100 series switch family, a Layer 2 protocol used to dynamically manage multicast group membership across switch ports. It exposes per-port GMRP timer configuration (join, leave, and leave-all timers) as well as per-VLAN GMRP enable/tag settings, covering both configuration and protocol operational-state data. Its monitoring role is mainly protocol-configuration visibility rather than classic hardware health, though rlGmrpSupported confirms whether the switch's software/firmware build actually supports the feature. It builds conceptually on the IEEE 802.1D GARP/GMRP standard, implemented here as a D-Link private extension since GMRP has no formal IETF MIB. It is typically used by network engineers tuning multicast pruning and join/leave latency on D-Link 3100 switches in multicast-heavy environments like video distribution or IPTV. Network engineers evaluating or troubleshooting this functionality can download the DLINK-3100-GMRP-MIB file directly to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in DLINK-3100-GMRP-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 3100 series managed switch
Monitoring Examples
An engineer would check rlGmrpSupported and rlGmrpMibVersion to confirm the switch's software build implements GMRP before relying on it. The rlPortGmrpTimersTable/rlPortGmrpTimersEntry with rlPortGmrpJoinTime and rlPortGmrpLeaveTime lets them tune how quickly a port joins or prunes a multicast group, diagnosing slow-to-join symptoms in a multicast video stream. rlGmrpVlanTable/rlGmrpVlanEntry with rlGmrpVlanEnable confirms whether GMRP is active on a specific VLAN.
What Can Be Monitored
- GMRP feature support/version
- per-port join/leave/leave-all timer values
- GARP timer override setting
- per-VLAN GMRP enable state and tagging
Imported Objects
From BRIDGE-MIB
| dot1dBasePort | OBJECT-TYPE |
From DLINK-3100-MIB
| rnd | MODULE-IDENTITY |
From P-BRIDGE-MIB
| EnabledStatus |
From SNMPv2-SMI
| MODULE-IDENTITY | |
| OBJECT-TYPE |
From SNMPv2-TC
| TimeInterval | |
| TruthValue |
OIDs
RFC description
Monitors and configures GMRP (GARP Multicast Registration Protocol) timers on bridge ports.
Start monitoring D-Link 3100 series switch (DES/DGS-3100), GMRP multicast registration 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.