All MIBs › DLINK-3100-rlBrgMcMngr-MIB
Organization: Dlink, Inc.
Last Updated: 2006-02-12
Category: Technology: Bridging, Technology: Multicast, Vendor: D-Link
Description: Controls multicast management bridging functions including IGMP snooping and multicast filtering on D-Link 3100 series switches.
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What Is DLINK-3100-rlBrgMcMngr-MIB?
This is a D-Link proprietary MIB module for the 3100 series switches managing multicast bridging behavior, specifically IGMP-based multicast group and VLAN filtering controls. It defines tables covering multicast manager settings per VLAN tag and, separately, per IP-addressed multicast manager entries, each with administrative and operational VLAN mode settings. Its monitoring role is on the software-configuration side of the switch, letting administrators verify multicast snooping/filtering modes are actually applied as configured (admin vs. operational mode agreement) to catch situations where multicast traffic is being flooded rather than properly constrained, which can indicate excessive bandwidth use or IGMP snooping misconfiguration. It functions alongside standard IGMP-related MIBs (like IGMP-MIB) as a vendor-specific bridging control layer rather than replacing them. It is deployed on DLINK-3100 series switches in networks running IPTV, video conferencing, or other multicast-heavy applications where efficient multicast forwarding matters. Engineers can download the DLINK-3100-rlBrgMcMngr-MIB file directly to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in DLINK-3100-rlBrgMcMngr-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/DES-3100 series switches
Monitoring Examples
An administrator would poll rlBrgMulticastManagerTable, comparing rlBrgMulticastManagerAdminVlanMode against rlBrgMulticastManagerOperVlanMode for a given rlBrgMulticastManagerVlanTag to confirm multicast filtering is actually enforced on that VLAN, not just configured. The rlBrgMulticastInetManagerTable extends this to IP-addressed multicast managers, checking rlBrgMulticastInetManagerIpType and its admin/oper VLAN mode pair to validate IPv4 or IPv6 multicast group management is functioning as intended. A mismatch between admin and operational mode signals a configuration that failed to apply, useful for troubleshooting unexpected multicast flooding.
What Can Be Monitored
- multicast manager VLAN admin mode
- multicast manager VLAN operational mode
- per-VLAN multicast filtering configuration
- IP-addressed multicast manager entries
Imported Objects
From DLINK-3100-MIB
| rnd | MODULE-IDENTITY |
From INET-ADDRESS-MIB
| InetAddressType |
From Q-BRIDGE-MIB
| VlanIndex |
From SNMPv2-SMI
| MODULE-IDENTITY | |
| OBJECT-TYPE |
OIDs
RFC description
Defines multicast support and management for D-Link 3100 series switches, including VLAN multicast configuration.
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