Dell-BRGMACSWITCH-MIB

All MIBs › Dell-BRGMACSWITCH-MIB

Organization: Dell

Last Updated: 2007-01-02

Category: Technology: Bridging, Vendor: Dell

Description: Manages MAC address switching tables and bridge forwarding on Dell network switches.

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What Is Dell-BRGMACSWITCH-MIB?

Dell-BRGMACSWITCH-MIB is a Dell private MIB for managing MAC address table switching parameters and bridge forwarding behavior on Dell network switches. It exposes configuration and operational data for the switch's MAC address table, including the maximum and current number of dynamically learned MAC entries, aging/deletion mode for stale entries, spanning-tree interaction, and trap thresholds for table utilization. Its monitoring value centers on software/hardware capacity and fault status of the forwarding plane: tracking rlBrgMacSwDynamicTables against yellow/red utilization boundaries reveals when the MAC address table is approaching capacity (a common cause of flooding or forwarding failures), and rlBrgMacSwTrapEnable/rlBrgMacSwOperTrapCount show whether and how often threshold-crossing alarms have fired. This MIB works alongside standard bridge MIB concepts (IETF BRIDGE-MIB) and Dell's spanning-tree configuration objects. It is deployed on Dell Ethernet switches in enterprise networks where MAC table exhaustion or instability needs to be proactively detected. Network engineers evaluating or troubleshooting this functionality can download the Dell-BRGMACSWITCH-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Dell-BRGMACSWITCH-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

Dell network switch (Ethernet/bridging)

Monitoring Examples

An admin would poll rlBrgMacSwDynamicTables against the configured rlBrgMacSwYellowBoundary and rlBrgMacSwRedBoundary to see how full the MAC address table is, and check rlBrgMacSwMaxTableNumber for the hardware ceiling. rlBrgMacSwOldEntryDeleteMode shows how stale entries are aged out, and rlBrgMacSwOperTrapCount combined with rlBrgMacSwAdminTrapFrequency indicates how often (and how frequently) capacity-threshold traps have been raised. A dynamic table count crossing into the red boundary would signal imminent MAC table exhaustion and potential unknown-unicast flooding.

What Can Be Monitored

dynamic MAC address table utilization
MAC table capacity thresholds (yellow/red)
stale entry aging/deletion mode
spanning tree interaction setting
MAC table trap count/frequency

Imported Objects

From Dell-MIB

rnd	MODULE-IDENTITY

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
INT rlBrgMacSwAdminTrapFrequency	1.3.6.1.4.1.89.50.12	INTEGER	read-write	This variable indicates the minimal frequency (in seconds) of sending a trap. It is relevant only when trap is enabled.
INT rlBrgMacSwDynamicTables	1.3.6.1.4.1.89.50.3	INTEGER	read-only	Specifies whether the device supports port dynamic MAC tables.
rlBrgMacSwitch	1.3.6.1.4.1.89.50			This private MIB module defines Switching Parameters private MIBs.
INT rlBrgMacSwKeyType	1.3.6.1.4.1.89.50.7	INTEGER	read-only	Specified the used MAC Address Table kye format: macOnly: One global MAC Address Table per device (leaky VLANs). tagAndMac: MAC Address Table per each VLAN (strick VLANs).
INT rlBrgMacSwMaxTableNumber	1.3.6.1.4.1.89.50.2	INTEGER	read-only	Maximum number of MAC Tables supported by the device.
INT rlBrgMacSwOldEntryDeleteMode	1.3.6.1.4.1.89.50.5	INTEGER	read-only	The method used to delete old unused entries refresh_flag: The high level sets a flag when it adds or updates an entry, the Switch clears the flag each time, when it learns the station once more. aging_flag: The high level clears a flag when it adds or updates an entry, the Switch sets the flag each time, when it learns the station once more. aging_time: The high level defines a timeout, the Switch sends a message to the high level each time when the station doesn't send messages during interval between timeout and 2*timeout. Boundaries: The Switch doesn't support any mechanism, and the high level uses two boundaries: red and yellow. When the number of entries exceeds the red boundary, the high level deletes the oldest entries.
INT rlBrgMacSwOperTrapCount	1.3.6.1.4.1.89.50.11	INTEGER	read-only	This variable indicates the trap counter status (i.e. number of received MAC addresses since the last trap sent that haven't been inserted into the hash). It is relevant only when trap is enabled.
INT rlBrgMacSwRedBoundary	1.3.6.1.4.1.89.50.9	INTEGER	read-write	The yellow boundary.
INT rlBrgMacSwSpanningTree	1.3.6.1.4.1.89.50.6	INTEGER	read-only	Specifies whether the device supports port the Spanning Tree Protocol.
T/F rlBrgMacSwTrapEnable	1.3.6.1.4.1.89.50.10	TruthValue	read-write	This variable indicates whether to create a SNMP trap if adding dynamic mac failed due to full hash chain.
INT rlBrgMacSwVersion	1.3.6.1.4.1.89.50.1	INTEGER	read-only	MIB's version, the current version is 2.
INT rlBrgMacSwYellowBoundary	1.3.6.1.4.1.89.50.8	INTEGER	read-write	The yellow boundary.

RFC description

Dell Networking bridge MAC switching parameters and MAC table management for private network switches.

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Download Dell-BRGMACSWITCH-MIB

What Is Dell-BRGMACSWITCH-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description