All MIBs › RADLAN-GMRP-MIB
Organization: Radlan - a MARVELL company. Marvell Semiconductor, Inc.
Last Updated: 2007-01-02
Category: IGMP and Multicast, Vendor: RADLAN/Cisco SB
Description:
Configures GARP Multicast Registration Protocol for dynamic multicast group membership propagation.
Imported Objects
From BRIDGE-MIB
| dot1dBasePort | OBJECT-TYPE |
From P-BRIDGE-MIB
| EnabledStatus |
From RADLAN-MIB
| rnd | OBJECT-IDENTITY |
From SNMPv2-SMI
| MODULE-IDENTITY | |
| OBJECT-TYPE |
From SNMPv2-TC
| TimeInterval | |
| TruthValue |
What Is RADLAN-GMRP-MIB?
RADLAN-GMRP-MIB is a vendor-specific private MIB from RADLAN/Marvell implementing the GARP Multicast Registration Protocol (GMRP), which lets switch ports dynamically register interest in multicast group traffic to constrain flooding. It exposes per-port GMRP timer configuration (join/leave/leave-all timers), per-VLAN GMRP enable state, and general feature-support/version information. Its monitoring role is software/protocol configuration and operational status — whether GMRP is supported and enabled per VLAN, and whether port timers are tuned appropriately — rather than hardware sensor data, helping an operator confirm multicast group registration is behaving correctly across the bridge. It is a proprietary extension aligned with the IEEE 802.1D/802.1Q GARP/GMRP standard rather than a full standards-based MIB implementation. It is typically deployed on RADLAN/Marvell-based managed switches in networks using dynamic multicast group pruning, such as those running IPTV or multicast-heavy applications. Engineers can download the RADLAN-GMRP-MIB file directly to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in RADLAN-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.
What Can Be Monitored
- GMRP support/version
- GMRP enable state per VLAN
- port join/leave/leave-all timer settings
- GARP override state per port
Supported Devices
- RADLAN/Marvell-based managed Ethernet switches
Monitoring Examples
An operator would check rlGmrpSupported and rlGmrpVlanTable/rlGmrpVlanEntry (rlGmrpVlanEnable) to confirm GMRP is active on the relevant VLANs, and inspect rlPortGmrpTimersTable/rlPortGmrpTimersEntry for rlPortGmrpJoinTime, rlPortGmrpLeaveTime, and rlPortGmrpLeaveAllTime to verify timer settings are not causing premature multicast group deregistration. Unexpectedly short leave timers combined with intermittent multicast stream drops on a port would point to a GMRP timer misconfiguration.
OIDs
| OID symbolic | OID numeric | Type | Access | Description |
|---|---|---|---|---|
| rlGmrp | 1.3.6.1.4.1.89.75 | This private MIB module defines GMRP private MIBs. | ||
| T/F rlGmrpSupported | 1.3.6.1.4.1.89.75.1 | TruthValue | read-only | Is Gmrp supported in the device or not. |
| INT rlGmrpMibVersion | 1.3.6.1.4.1.89.75.2 | INTEGER | read-only | MIB's version, the current version is 1. |
| rlPortGmrpTimersTable | 1.3.6.1.4.1.89.75.3 | not-accessible | A table of Gmrp timer values for every bridge port. This is indexed by dot1dBasePort. | |
| rlPortGmrpTimersEntry | 1.3.6.1.4.1.89.75.3.1 | not-accessible | Gmrp timer values for a bridge port. | |
| NUM rlPortGmrpJoinTime | 1.3.6.1.4.1.89.75.3.1.1 | TimeInterval | read-write | The Gmrp Join time, in centiseconds. |
| NUM rlPortGmrpLeaveTime | 1.3.6.1.4.1.89.75.3.1.2 | TimeInterval | read-write | The Gmrp Leave time, in centiseconds. |
| NUM rlPortGmrpLeaveAllTime | 1.3.6.1.4.1.89.75.3.1.3 | TimeInterval | read-write | The Gmrp LeaveAll time, in centiseconds. |
| ENA rlPortGmrpOverrideGarp | 1.3.6.1.4.1.89.75.3.1.4 | EnabledStatus | read-write | If enabled{1}, Gmrp timer values for this port are determined by the values in this entry. Otherwise, they are determined by the values in dot1dPortGarpTable. |
| rlGmrpVlanTable | 1.3.6.1.4.1.89.75.4 | not-accessible | This table is to Enable/Disable Gmrp in the vlan. | |
| rlGmrpVlanEntry | 1.3.6.1.4.1.89.75.4.1 | not-accessible | An entry in the rlGmrpVlanTable. | |
| INT rlGmrpVlanTag | 1.3.6.1.4.1.89.75.4.1.1 | INTEGER | read-only | The tag of the VLAN for which this entry contains information. |
| T/F rlGmrpVlanEnable | 1.3.6.1.4.1.89.75.4.1.2 | TruthValue | read-write | Enable/Disable Gmrp in the vlan. |
RFC description
Group Multicast Registration Protocol private timer configuration for Radlan bridge ports.
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