Dell-BRIDGEMIBOBJECTS-MIB

MIB Reference — IPNetwork Monitor

All MIBsDell-BRIDGEMIBOBJECTS-MIB

Organization: Dell

Last Updated: 2007-01-02

Category: Technology: Bridging, Vendor: Dell

Description:

Provides bridge MIB object extensions for Layer 2 switching on Dell network devices.

Imported Objects

From BRIDGE-MIB

BridgeId
Timeout
dot1dBasePortOBJECT-TYPE
dot1dStpPort

From Dell-MIB

rndMODULE-IDENTITY

From IF-MIB

InterfaceIndex
ifIndexOBJECT-TYPE

From Q-BRIDGE-MIB

PortList

From RFC1155-SMI

Counter

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DisplayString
RowStatus
TruthValue

What Is Dell-BRIDGEMIBOBJECTS-MIB?

Dell-BRIDGEMIBOBJECTS-MIB is a Dell extension to the standard Bridge MIB, adding vendor-specific objects (the "rl" prefix reflects its RapidCity/Redline switching lineage) for Layer 2 switching features such as per-VLAN Spanning Tree and port priority groups on Dell switches. It exposes configuration data for VLAN-aware Spanning Tree Protocol (STP) behavior, port priority group assignments, and STP enable/type settings, plus a trap-variable object for STP-related notifications. Its monitoring value is centered on software/protocol configuration status rather than physical hardware — administrators use it to confirm STP is enabled and operating in the expected mode per VLAN, and to catch misconfigurations that could cause loops or blocked ports. Network engineers working with the Dell-BRIDGEMIBOBJECTS-MIB MIB typically load it alongside the standard BRIDGE-MIB (dot1dBridge) in their management tool, since its object names and semantics parallel and augment that IETF standard. It is deployed on Dell Ethernet switches running Layer 2 switching software in enterprise networks.

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

  • per-VLAN spanning tree status
  • STP enable/type configuration
  • port priority group assignment
  • STP topology-change traps

Supported Devices

  • Dell PowerSwitch E3248P-ON — current-gen access switch, the recommended upgrade path from the EOL N2000-series

Monitoring Examples

An admin would poll rldot1dStpVlanTable/rldot1dStpVlanEntry to check rldot1dStpVlan status and rldot1dStpEnable per VLAN, confirming STP is active where expected. rldot1dPriorityPortGroupTable/rldot1dPriorityPortGroupEntry indexed by rldot1dPriorityPortGroupNumber reveals which ports are grouped for priority-based forwarding decisions. rldot1dStpTrapVariable can be checked to correlate incoming STP-related traps with the specific object that changed, useful when diagnosing an unexpected topology change.

OIDs
OID symbolicOID numericTypeAccessDescription
rlpBridgeMIBObjects1.3.6.1.4.1.89.57This private MIB module defines bridge MIB objects private MIBs.
rldot1dPriority1.3.6.1.4.1.89.57.1
INT rldot1dPriorityMibVersion1.3.6.1.4.1.89.57.1.1INTEGERread-onlyMIB's version, the current version is 1.
rldot1dPriorityPortGroupTable1.3.6.1.4.1.89.57.1.2not-accessibleA list of PortGroupNumber for each port.
rldot1dPriorityPortGroupEntry1.3.6.1.4.1.89.57.1.2.1not-accessibleAll ports belonging to a same group have the same User Priority to Traffic Class mapping.
INT rldot1dPriorityPortGroupNumber1.3.6.1.4.1.89.57.1.2.1.1INTEGERread-onlyA group, that port belongs to. All ports belonging to a same group have the same User Priority to Traffic Class mapping.
rldot1dStp1.3.6.1.4.1.89.57.2
INT rldot1dStpMibVersion1.3.6.1.4.1.89.57.2.1INTEGERread-onlyMIB's version, the current version is 2.
INT rldot1dStpType1.3.6.1.4.1.89.57.2.2INTEGERread-onlySpecifies whether the device supports Spanning Tree per device, or per group.
T/F rldot1dStpEnable1.3.6.1.4.1.89.57.2.3TruthValueread-writeEnable / Disable spanning tree. When working in per vlan mode enable / disable STP per all vlans.
T/F rldot1dStpPortMustBelongToVlan1.3.6.1.4.1.89.57.2.4TruthValueread-writeSpecifies whether a port must belong to a VLAN in order to participate in the STP.
T/F rldot1dStpExtendedPortNumberFormat1.3.6.1.4.1.89.57.2.5TruthValueread-writeSpecifies whether the STP uses the extended port fnumber format.
rldot1dStpVlanTable1.3.6.1.4.1.89.57.2.6not-accessibleA table that contains vlan-specific information for the Spanning Tree Protocol.
rldot1dStpVlanEntry1.3.6.1.4.1.89.57.2.6.1not-accessibleA list of information maintained by every Vlan about the Spanning Tree Protocol state for that Vlan.
INT rldot1dStpVlan1.3.6.1.4.1.89.57.2.6.1.1INTEGERread-onlyThe Vlan index.
T/F rldot1dStpVlanEnable1.3.6.1.4.1.89.57.2.6.1.2TruthValueread-writeSpecifies whether this vlan is STP enable or disable
TIK rldot1dStpTimeSinceTopologyChange1.3.6.1.4.1.89.57.2.6.1.3TimeTicksread-onlyThe time (in hundredths of a second) since the last time a topology change was detected by the bridge entity.
CTR rldot1dStpTopChanges1.3.6.1.4.1.89.57.2.6.1.4Counterread-onlyThe total number of topology changes detected by this bridge since the management entity was last reset or initialized.
BRI rldot1dStpDesignatedRoot1.3.6.1.4.1.89.57.2.6.1.5BridgeIdread-onlyThe bridge identifier of the root of the spanning tree as determined by the Spanning Tree Protocol as executed by this node. This value is used as the Root Identifier parameter in all Configuration Bridge PDUs originated by this node.
INT rldot1dStpRootCost1.3.6.1.4.1.89.57.2.6.1.6INTEGERread-onlyThe cost of the path to the root as seen from this bridge.
INT rldot1dStpRootPort1.3.6.1.4.1.89.57.2.6.1.7INTEGERread-onlyThe port number of the port which offers the lowest cost path from this bridge to the root bridge.
TIM rldot1dStpMaxAge1.3.6.1.4.1.89.57.2.6.1.8Timeoutread-onlyThe maximum age of Spanning Tree Protocol information learned from the network on any port before it is discarded, in units of hundredths of a second. This is the actual value that this bridge is currently using.
TIM rldot1dStpHelloTime1.3.6.1.4.1.89.57.2.6.1.9Timeoutread-onlyThe amount of time between the transmission of Configuration bridge PDUs by this node on any port when it is the root of the spanning tree or trying to become so, in units of hundredths of a second. This is the actual value that this bridge is currently using.
INT rldot1dStpHoldTime1.3.6.1.4.1.89.57.2.6.1.10INTEGERread-onlyThis time value determines the interval length during which no more than two Configuration bridge PDUs shall be transmitted by this node, in units of hundredths of a second.
TIM rldot1dStpForwardDelay1.3.6.1.4.1.89.57.2.6.1.11Timeoutread-onlyThis time value, measured in units of hundredths of a second, controls how fast a port changes its spanning state when moving towards the Forwarding state. The value determines how long the port stays in each of the Listening and Learning states, which precede the Forwarding state. This value is also used, when a topology change has been detected and is underway, to age all dynamic entries in the Forwarding Database. [Note that this value is the one that this bridge is currently using, in contrast to dot1dStpBridgeForwardDelay which is the value that this bridge and all others would start using if/when this bridge were to become the root.]
rldot1dStpVlanPortTable1.3.6.1.4.1.89.57.2.7not-accessibleA table that contains pair specific information for the Spanning Tree Protocol.
rldot1dStpVlanPortEntry1.3.6.1.4.1.89.57.2.7.1not-accessibleA list of information maintained by every pair about the Spanning Tree Protocol state for that pair.
INT rldot1dStpVlanPortVlan1.3.6.1.4.1.89.57.2.7.1.1INTEGERread-onlyThe Vlan number that the port belongs to, and for which this entry contains Spanning Tree Protocol management information.
INT rldot1dStpVlanPortPort1.3.6.1.4.1.89.57.2.7.1.2INTEGERread-onlyThe port number of the port for which this entry contains Spanning Tree Protocol management information.
INT rldot1dStpVlanPortPriority1.3.6.1.4.1.89.57.2.7.1.3INTEGERread-writeThe value of the priority field which is contained in the more significant 4 bits of the most significant octet of the (2 octet long) Port ID. The other octet of the Port ID is given by the value of rldot1dStpVlanPort.
INT rldot1dStpVlanPortState1.3.6.1.4.1.89.57.2.7.1.4INTEGERread-onlyThe port's current state as defined by application of the Spanning Tree Protocol. This state controls what action a port takes on reception of a frame. If the bridge has detected a port that is malfunctioning it will place that port into the broken(6) state. For ports which are disabled (see dot1dStpVlanPortEnable), this object will have a value of disabled(1).
INT rldot1dStpVlanPortEnable1.3.6.1.4.1.89.57.2.7.1.5INTEGERread-writeThe enabled/disabled status of the port.
INT rldot1dStpVlanPortPathCost1.3.6.1.4.1.89.57.2.7.1.6INTEGERread-writeThe contribution of this port to the path cost of paths towards the spanning tree root which include this port. 802.1D-1990 recommends that the default value of this parameter be in inverse proportion to the speed of the attached LAN.
BRI rldot1dStpVlanPortDesignatedRoot1.3.6.1.4.1.89.57.2.7.1.7BridgeIdread-onlyThe unique Bridge Identifier of the Bridge recorded as the Root in the Configuration BPDUs transmitted by the Designated Bridge for the segment to which the port is attached.
INT rldot1dStpVlanPortDesignatedCost1.3.6.1.4.1.89.57.2.7.1.8INTEGERread-onlyThe path cost of the Designated Port of the segment connected to this port. This value is compared to the Root Path Cost field in received bridge PDUs.
BRI rldot1dStpVlanPortDesignatedBridge1.3.6.1.4.1.89.57.2.7.1.9BridgeIdread-onlyThe Bridge Identifier of the bridge which this port considers to be the Designated Bridge for this port's segment.
OCT rldot1dStpVlanPortDesignatedPort1.3.6.1.4.1.89.57.2.7.1.10OCTET STRINGread-onlyThe Port Identifier of the port on the Designated Bridge for this port's segment.
CTR rldot1dStpVlanPortForwardTransitions1.3.6.1.4.1.89.57.2.7.1.11Counterread-onlyThe number of times this port has transitioned from the Learning state to the Forwarding state.
rldot1dStpTrapVariable1.3.6.1.4.1.89.57.2.8
NUM rldot1dStpTrapVrblifIndex1.3.6.1.4.1.89.57.2.8.1InterfaceIndexread-onlyThe ifIndex of port which STP status was changed
INT rldot1dStpTrapVrblVID1.3.6.1.4.1.89.57.2.8.2INTEGERread-onlyThe VID of VLAN to which the port belongs which STP status was changed
INT rldot1dStpTypeAfterReset1.3.6.1.4.1.89.57.2.9INTEGERread-writeNew mode of spaning tree supported by the device after the next reset.
INT rldot1dStpMonitorTime1.3.6.1.4.1.89.57.2.10INTEGERread-writeFactor of hello-time during which a port is monotored to determine if it is stable.
INT rldot1dStpBpduCount1.3.6.1.4.1.89.57.2.11INTEGERread-writeThe number of bpdu that need to received for the link to be considered stable.
TIK rldot1dStpLastChanged1.3.6.1.4.1.89.57.2.12TimeTicksread-onlyThe last time any object in this table was changed by SNMP or other local management means.
rldot1dStpPortTable1.3.6.1.4.1.89.57.2.13not-accessibleA table that contains extended pair port specific information.
rldot1dStpPortEntry1.3.6.1.4.1.89.57.2.13.1not-accessibleA list of information maintained by every port about the Spanning Tree Protocol state for that port.
INT rldot1dStpPortPort1.3.6.1.4.1.89.57.2.13.1.1INTEGERread-onlyThe port number of the port for which this entry contains Spanning Tree Protocol management information.
T/F rldot1dStpPortDampEnable1.3.6.1.4.1.89.57.2.13.1.2TruthValueread-writeSpecified if dampening is enabled on this port.
T/F rldot1dStpPortDampStable1.3.6.1.4.1.89.57.2.13.1.3TruthValueread-onlySpecified if the port is stable.
INT rldot1dStpPortFilterBpdu1.3.6.1.4.1.89.57.2.13.1.4INTEGERread-writeSpecified if this port should filter bpdus when stp is disabled.
C32 rldot1dStpPortBpduSent1.3.6.1.4.1.89.57.2.13.1.5Counter32read-onlySpecified the number of bpdu sent from this port.
C32 rldot1dStpPortBpduReceived1.3.6.1.4.1.89.57.2.13.1.6Counter32read-onlySpecified the number of bpdu received in this port.
INT rldot1dStpPortRole1.3.6.1.4.1.89.57.2.13.1.7INTEGERread-onlySpecified the role of this this port.
INT rldot1dStpBpduType1.3.6.1.4.1.89.57.2.13.1.8INTEGERread-onlySpecified the type of BPDU transmitted by this port.
T/F rldot1dStpPortRestrictedRole1.3.6.1.4.1.89.57.2.13.1.9TruthValueread-writeIf TRUE causes the Port not to be selected as Root Port for the CIST or any MSTI, even if it has the best spanning tree priority vector. Such a Port will be selected as an Alternate Port after the Root Port has been selected.
T/F rldot1dStpPortAutoEdgePort1.3.6.1.4.1.89.57.2.13.1.10TruthValueread-writeIf TRUE causes the Port when become up, to enter the blocking state, and if during 3 seconds it doesn't receive a BPDU, it will enter the forwarding state.
T/F rldot1dStpPortLoopback1.3.6.1.4.1.89.57.2.13.1.11TruthValueread-onlySpecified loopback was detected on port. Usable for only a short period of time if stp loopback guard is enabled (since port enters into shutdown state).
INT rldot1dStpPortBpduOperStatus1.3.6.1.4.1.89.57.2.13.1.12INTEGERread-onlySpecified BPDU handling operative status for port.
T/F rldot1dStpPortsEnable1.3.6.1.4.1.89.57.2.14TruthValueread-onlyEnable / Disable spanning tree on ports by default .
T/F rldot1dStpTaggedFlooding1.3.6.1.4.1.89.57.2.15TruthValueread-onlyflooding can be done in tagged bpdu .
T/F rldot1dStpPortBelongToVlanDefault1.3.6.1.4.1.89.57.2.16TruthValueread-onlyThe default value of rldot1dStpPortMustBelongToVlan .
T/F rldot1dStpEnableByDefault1.3.6.1.4.1.89.57.2.17TruthValueread-onlyThe default value of rldot1dStpEnable .
INT rldot1dStpPortToDefault1.3.6.1.4.1.89.57.2.18INTEGERread-writeTo order port/s to revert to default setings .
INT rldot1dStpSupportedType1.3.6.1.4.1.89.57.2.19INTEGERread-onlyThe type of stp supported by the device.
T/F rldot1dStpEdgeportSupportInStp1.3.6.1.4.1.89.57.2.20TruthValueread-onlyIf EdgePort is supported in stpCompatible mode .
T/F rldot1dStpFilterBpdu1.3.6.1.4.1.89.57.2.21TruthValueread-writeSpecified if the device should filter BPDUs when STP is disabled.
INT rldot1dStpFloodBpduMethod1.3.6.1.4.1.89.57.2.22INTEGERread-writeSpecified flooding method: 1 - classic - untagged to all stp disabled ports 2 - bridging -normal bridging.
rldot1dStpSeparatedBridges1.3.6.1.4.1.89.57.2.23
rldot1dStpSeparatedBridgesTable1.3.6.1.4.1.89.57.2.23.1not-accessibleDefine if separated bridges feature is enabled for each interface.
rldot1dStpSeparatedBridgesEntry1.3.6.1.4.1.89.57.2.23.1.1not-accessibleDefines the contents of each line in the rlSeparatedBridgesTable table.
T/F rldot1dStpSeparatedBridgesPortEnable1.3.6.1.4.1.89.57.2.23.1.1.1TruthValueread-writeThis variable indicates whether the separated bridge feature is enabled on a specified ifIndex.
T/F rldot1dStpSeparatedBridgesEnable1.3.6.1.4.1.89.57.2.23.2TruthValueread-writeEnable / Disable Separated Bridges Feature.
T/F rldot1dStpSeparatedBridgesAutoConfig1.3.6.1.4.1.89.57.2.23.3TruthValueread-writeEnable / Disable Separated Bridges Automatic Configuration.
rldot1dStpPortBpduGuardTable1.3.6.1.4.1.89.57.2.24not-accessibleA table that contains for each port whether it is bpdu guard .
rldot1dStpPortBpduGuardEntry1.3.6.1.4.1.89.57.2.24.1not-accessibleA list of information maintained by every port whether it is bpdu guard.
T/F rldot1dStpPortBpduGuardEnable1.3.6.1.4.1.89.57.2.24.1.1TruthValueread-writeSpecified if bpdu guard is enabled on this port.
T/F rldot1dStpLoopbackGuardEnable1.3.6.1.4.1.89.57.2.25TruthValueread-writeDefine if STP loopback guard feature is globally enabled.
rldot1dStpDisabledPortStateTable1.3.6.1.4.1.89.57.2.26not-accessibleDefine stp port state for each stp disabled interface. This is auxiliary MIB emulates stp enabled port behaviour in ASIC for stp disabled port. The MIB contains only stp disabled ports entries
rldot1dStpDisabledPortStateEntry1.3.6.1.4.1.89.57.2.26.1not-accessibleDefines the contents of each line in the rldot1dStpDisabledPortStateTable table.
INT rldot1dStpDisabledPortState1.3.6.1.4.1.89.57.2.26.1.1INTEGERread-writeThe port's stp state as defined by external application . This state controls what action a port takes on reception of a frame.
rldot1dExtBase1.3.6.1.4.1.89.57.3
INT rldot1dExtBaseMibVersion1.3.6.1.4.1.89.57.3.1INTEGERread-onlyMIB's version, the current version is 1.
OCT rldot1dDeviceCapabilities1.3.6.1.4.1.89.57.3.2OCTET STRINGread-onlyIndicates the optional parts of private extension of IEEE 802.1D and 802.1Q that are implemented by this device and are manageable through this MIB. Capabilities that are allowed on a per-port basis are indicated in dot1dPortCapabilities.
rldot1wRStp1.3.6.1.4.1.89.57.4
rldot1wRStpVlanEdgePortTable1.3.6.1.4.1.89.57.4.1not-accessibleA table that contains pair specific information for the Rapid Spanning Tree Protocol.
rldot1wRStpVlanEdgePortEntry1.3.6.1.4.1.89.57.4.1.1not-accessibleA list of information maintained by every pair about the RAPID Spanning Tree Protocol state for that pair.
INT rldot1wRStpVlanEdgePortVlan1.3.6.1.4.1.89.57.4.1.1.1INTEGERread-onlyThe Vlan number that the port belongs to, and for which this entry contains Spanning Tree Protocol management information, If STP per device then only one value of 1 is allowed. If STP per a VLAN then all value of 1..4095 are allowed.
INT rldot1wRStpVlanEdgePortPort1.3.6.1.4.1.89.57.4.1.1.2INTEGERread-onlyThe port number of the port for which this entry contains Spanning Tree Protocol management information.
T/F rldot1wRStpEdgePortStatus1.3.6.1.4.1.89.57.4.1.1.3TruthValueread-writeSpecifies whether this port is an Edge Port or not
rldot1wRStpForceVersionTable1.3.6.1.4.1.89.57.4.2not-accessibleA table that contains specific information for the Rapid Spanning Tree Protocol.
rldot1wRStpForceVersionEntry1.3.6.1.4.1.89.57.4.2.1not-accessibleA list of information maintained by every about the RAPID Spanning Tree Protocol state for that pair.
INT rldot1wRStpForceVersionVlan1.3.6.1.4.1.89.57.4.2.1.1INTEGERread-onlyThe Vlan number that the port belongs to, and for which this entry contains Spanning Tree Protocol management information, If STP per device then only one value of 1 is allowed. If STP per a VLAN then all value of 1..4095 are allowed.
INT rldot1wRStpForceVersionState1.3.6.1.4.1.89.57.4.2.1.2INTEGERread-writeSpecifies whether this Bridge uses the normal RSTP algorithm, or STP Compatibility algorythm: 0 - STP Compatibility 2 - Normal RSTP
rldot1pPriorityMap1.3.6.1.4.1.89.57.5
INT rldot1pPriorityMapState1.3.6.1.4.1.89.57.5.1INTEGERread-writeenable / disable
rldot1pPriorityMapTable1.3.6.1.4.1.89.57.5.2not-accessibleThis table hold information the priority maps
rldot1pPriorityMapEntry1.3.6.1.4.1.89.57.5.2.1not-accessibleThe row definition for this table.
STR rldot1pPriorityMapName1.3.6.1.4.1.89.57.5.2.1.1DisplayStringread-onlyThe map name
OCT rldot1pPriorityMapPriority1.3.6.1.4.1.89.57.5.2.1.2OCTET STRINGread-createThe map holding the queue
POR rldot1pPriorityMapPort1.3.6.1.4.1.89.57.5.2.1.3PortListread-createthe port that the map, is applied on in config
POR rldot1pPriorityMapPortList1.3.6.1.4.1.89.57.5.2.1.4PortListread-onlythe ports that the map, is applied on in actual
ROW rldot1pPriorityMapStatus1.3.6.1.4.1.89.57.5.2.1.5RowStatusread-createThe status of the table entry. It's used to delete an entry
rldot1sMstp1.3.6.1.4.1.89.57.6
rldot1sMstpInstanceTable1.3.6.1.4.1.89.57.6.1not-accessibleA table that contains Mstp instance specific information for the Multiple Spanning Tree Protocol.
rldot1sMstpInstanceEntry1.3.6.1.4.1.89.57.6.1.1not-accessibleA list of information maintained by every instance about the multiple Spanning Tree Protocol state for that instance.
INT rldot1sMstpInstanceId1.3.6.1.4.1.89.57.6.1.1.1INTEGERread-onlyThe Instance index.
T/F rldot1sMstpInstanceEnable1.3.6.1.4.1.89.57.6.1.1.2TruthValueread-onlySpecifies whether this Instance is STP enable or disable
TIK rldot1sMstpInstanceTimeSinceTopologyChange1.3.6.1.4.1.89.57.6.1.1.3TimeTicksread-onlyThe time (in hundredths of a second) since the last time a topology change was detected by the Mstp Instance .
CTR rldot1sMstpInstanceTopChanges1.3.6.1.4.1.89.57.6.1.1.4Counterread-onlyThe total number of topology changes detected by this Instance since the management entity was last reset or initialized.
BRI rldot1sMstpInstanceDesignatedRoot1.3.6.1.4.1.89.57.6.1.1.5BridgeIdread-onlyThe bridge identifier of the root of the spanning tree as determined by the Muliple Spanning Tree Protocol as executed by this node. This value is used as the Root Identifier parameter in all Configuration Bridge PDUs originated by this node.
INT rldot1sMstpInstanceRootCost1.3.6.1.4.1.89.57.6.1.1.6INTEGERread-onlyThe cost of the path to the root as seen from this bridge.
INT rldot1sMstpInstanceRootPort1.3.6.1.4.1.89.57.6.1.1.7INTEGERread-onlyThe port number of the port which offers the lowest cost path from this bridge to the root bridge.
TIM rldot1sMstpInstanceMaxAge1.3.6.1.4.1.89.57.6.1.1.8Timeoutread-onlyThe maximum age of Spanning Tree Protocol information learned from the network on any port before it is discarded, in units of hundredths of a second. This is the actual value that this bridge is currently using.
TIM rldot1sMstpInstanceHelloTime1.3.6.1.4.1.89.57.6.1.1.9Timeoutread-onlyThe amount of time between the transmission of Configuration bridge PDUs by this node on any port when it is the root of the spanning tree or trying to become so, in units of hundredths of a second. This is the actual value that this bridge is currently using.
INT rldot1sMstpInstanceHoldTime1.3.6.1.4.1.89.57.6.1.1.10INTEGERread-onlyThis time value determines the interval length during which no more than two Configuration bridge PDUs shall be transmitted by this node, in units of hundredths of a second.
TIM rldot1sMstpInstanceForwardDelay1.3.6.1.4.1.89.57.6.1.1.11Timeoutread-onlyThis time value, measured in units of hundredths of a second, controls how fast a port changes its spanning state when moving towards the Forwarding state. The value determines how long the port stays in each of the Listening and Learning states, which precede the Forwarding state. This value is also used, when a topology change has been detected and is underway, to age all dynamic entries in the Forwarding Database. [Note that this value is the one that this bridge is currently using, in contrast to dot1dStpBridgeForwardDelay which is the value that this bridge and all others would start using if/when this bridge were to become the root.]
INT rldot1sMstpInstancePriority1.3.6.1.4.1.89.57.6.1.1.12INTEGERread-writeThe value of the write-able portion of the Bridge ID, i.e., the first four bits of the first octet of the (8 octet long) Bridge ID.The value is a product of 4096. The next 12 bit are the msti id . The other (last) 6 octets of the Bridge ID are given by the value of dot1dBaseBridgeAddress.
INT rldot1sMstpInstanceRemainingHopes1.3.6.1.4.1.89.57.6.1.1.13INTEGERread-onlyThis count value determines the amount of hopes the information transmited by this bridge on this instance can travel.
rldot1sMstpInstancePortTable1.3.6.1.4.1.89.57.6.2not-accessibleA table that contains pair specific information for the Spanning Tree Protocol.
rldot1sMstpInstancePortEntry1.3.6.1.4.1.89.57.6.2.1not-accessibleA list of information maintained by every pair about the Spanning Tree Protocol state for that pair.
INT rldot1sMstpInstancePortMstiId1.3.6.1.4.1.89.57.6.2.1.1INTEGERread-onlyThe Vlan group number that the port belongs to, and for which this entry contains Spanning Tree Protocol management information.
INT rldot1sMstpInstancePortPort1.3.6.1.4.1.89.57.6.2.1.2INTEGERread-onlyThe port number of the port for which this entry contains Spanning Tree Protocol management information.
INT rldot1sMstpInstancePortPriority1.3.6.1.4.1.89.57.6.2.1.3INTEGERread-writeThe value of the priority field which is contained in the more significant 4 bits of the most significant octet of the (2 octet long) Port ID. The value is a product of 16. The other octet of the Port ID is given by the value of rldot1dStpVlanGroupPort.
INT rldot1sMstpInstancePortState1.3.6.1.4.1.89.57.6.2.1.4INTEGERread-onlyThe port's current state as defined by application of the Spanning Tree Protocol. This state controls what action a port takes on reception of a frame. If the bridge has detected a port that is malfunctioning it will place that port into the broken(6) state. For ports which are disabled (see dot1dStpVlanPortEnable), this object will have a value of disabled(1).
INT rldot1sMstpInstancePortEnable1.3.6.1.4.1.89.57.6.2.1.5INTEGERread-onlyThe enabled/disabled status of the port.
INT rldot1sMstpInstancePortPathCost1.3.6.1.4.1.89.57.6.2.1.6INTEGERread-onlyThe contribution of this port to the path cost of paths towards the spanning tree root which include this port. 802.1D-1990 recommends that the default value of this parameter be in inverse proportion to the speed of the attached LAN.
BRI rldot1sMstpInstancePortDesignatedRoot1.3.6.1.4.1.89.57.6.2.1.7BridgeIdread-onlyThe unique Bridge Identifier of the Bridge recorded as the Root in the Configuration BPDUs transmitted by the Designated Bridge for the segment to which the port is attached.
INT rldot1sMstpInstancePortDesignatedCost1.3.6.1.4.1.89.57.6.2.1.8INTEGERread-onlyThe path cost of the Designated Port of the segment connected to this port. This value is compared to the Root Path Cost field in received bridge PDUs.
BRI rldot1sMstpInstancePortDesignatedBridge1.3.6.1.4.1.89.57.6.2.1.9BridgeIdread-onlyThe Bridge Identifier of the bridge which this port considers to be the Designated Bridge for this port's segment.
OCT rldot1sMstpInstancePortDesignatedPort1.3.6.1.4.1.89.57.6.2.1.10OCTET STRINGread-onlyThe Port Identifier of the port on the Designated Bridge for this port's segment.
CTR rldot1sMstpInstancePortForwardTransitions1.3.6.1.4.1.89.57.6.2.1.11Counterread-onlyThe number of times this port has transitioned from the Learning state to the Forwarding state.
INT rldot1sMStpInstancePortAdminPathCost1.3.6.1.4.1.89.57.6.2.1.12INTEGERread-writeThe administratively assigned value for the contribution of this port to the path cost of paths towards the spanning tree root. Writing a value of '0' assigns the automatically calculated default Path Cost value to the port. If the default Path Cost is being used, this object returns '0' when read. This complements the object dot1dStpPortPathCost, which returns the operational value of the path cost.
INT rldot1sMStpInstancePortRole1.3.6.1.4.1.89.57.6.2.1.13INTEGERread-onlySpecify the role of this this port.
INT rldot1sMstpMaxHopes1.3.6.1.4.1.89.57.6.3INTEGERread-writeMax number of hopes that an MST BPDU will travel inside a region.
STR rldot1sMstpConfigurationName1.3.6.1.4.1.89.57.6.4SnmpAdminStringread-onlyThe active configuration name as will be caried in MST BPDU's.
INT rldot1sMstpRevisionLevel1.3.6.1.4.1.89.57.6.5INTEGERread-onlyThe active revision level.
rldot1sMstpVlanTable1.3.6.1.4.1.89.57.6.6not-accessibleA table that contains information about the alocation of vlans to groups.
rldot1sMstpVlanEntry1.3.6.1.4.1.89.57.6.6.1not-accessibleA list of information maintained by every vlan about the group it belongs to.
INT rldot1sMstpVlan1.3.6.1.4.1.89.57.6.6.1.1INTEGERread-onlyThe vlan number of the vlan for which this entry contains Spanning Tree Protocol management information.
INT rldot1sMstpGroup1.3.6.1.4.1.89.57.6.6.1.2INTEGERread-onlySpecifid the active group number this vlan belonges to.
INT rldot1sMstpPendingGroup1.3.6.1.4.1.89.57.6.6.1.3INTEGERread-writeSpecifid the pending group number this vlan belonges to.
rldot1sMstpExtPortTable1.3.6.1.4.1.89.57.6.7not-accessibleA table that contains MSTP information about ports of the CIST.
rldot1sMstpExtPortEntry1.3.6.1.4.1.89.57.6.7.1not-accessibleA list of information maintained by every port of the CIST.
INT rldot1sMstpExtPortPort1.3.6.1.4.1.89.57.6.7.1.1INTEGERread-onlyThe port number of the port for which this entry contains Spanning Tree Protocol management information.
INT rldot1sMstpExtPortInternalOperPathCost1.3.6.1.4.1.89.57.6.7.1.2INTEGERread-onlyThe contribution of this port to the path cost of paths towards the spanning tree regional root which include this port. 802.1S-2002 recommends that the default value of this parameter be in inverse proportion to the speed of the attached LAN.
BRI rldot1sMstpExtPortDesignatedRegionalRoot1.3.6.1.4.1.89.57.6.7.1.3BridgeIdread-onlyThe unique Bridge Identifier of the Bridge recorded as the Root in the Configuration BPDUs transmitted by the Designated Bridge for the segment to which the port is attached.
INT rldot1sMstpExtPortDesignatedRegionalCost1.3.6.1.4.1.89.57.6.7.1.4INTEGERread-onlyThe regional path cost of the Designated Port of the segment connected to this port. This value is compared to the Root Path Cost field in received bridge PDUs.
T/F rldot1sMstpExtPortBoundary1.3.6.1.4.1.89.57.6.7.1.5TruthValueread-onlyIndication if the port is conented to to a lan segment outside or inside the region.
INT rldot1sMstpExtPortInternalAdminPathCost1.3.6.1.4.1.89.57.6.7.1.6INTEGERread-writeThe administratively assigned value for the contribution of this port to the path cost of paths towards the spanning tree root. Writing a value of '0' assigns the automatically calculated default Path Cost value to the port. If the default Path Cost is being used, this object returns '0' when read. This complements the object dot1dStpPortPathCost, which returns the operational value of the path cost.
INT rldot1sMstpDesignatedMaxHopes1.3.6.1.4.1.89.57.6.8INTEGERread-onlyMax number of hopes that an MST BPDU will travel inside a region.
BRI rldot1sMstpRegionalRoot1.3.6.1.4.1.89.57.6.9BridgeIdread-onlyCIST Regional Root Identifier (13.16.4). The Bridge Identifier of the current CIST Regional Root.
INT rldot1sMstpRegionalRootCost1.3.6.1.4.1.89.57.6.10INTEGERread-onlyThe CIST path cost from the transmitting Bridge to the CIST Regional Root.
STR rldot1sMstpPendingConfigurationName1.3.6.1.4.1.89.57.6.11SnmpAdminStringread-writeThe pending configuration name.
INT rldot1sMstpPendingRevisionLevel1.3.6.1.4.1.89.57.6.12INTEGERread-writeThe pending revision level.
INT rldot1sMstpPendingAction1.3.6.1.4.1.89.57.6.13INTEGERread-writeThe action to be done with the pending configuration. copyPendingActive - to copy the pending mst configuration to the active one. copyActivePending - to copy the active mst configuration to the pending one.
INT rldot1sMstpRemainingHops1.3.6.1.4.1.89.57.6.14INTEGERread-onlyThis count value determines the amount of hops the information transmitted by this bridge can travel.
rldot1sMstpInstanceVlanTable1.3.6.1.4.1.89.57.6.15not-accessibleThis table contains vlan lists per MSTP instances.
rldot1sMstpInstanceVlanEntry1.3.6.1.4.1.89.57.6.15.1not-accessibleThe entry contains vlan lists per specific MSTP instance.
INT rldot1sMstpInstanceVlanId1.3.6.1.4.1.89.57.6.15.1.1INTEGERread-onlySpecifiy the instance number.
VLA rldot1sMstpInstanceVlanId1To10241.3.6.1.4.1.89.57.6.15.1.2VlanList1read-onlyfirst VlanId List of specific MSTP instance.
VLA rldot1sMstpInstanceVlanId1025To20481.3.6.1.4.1.89.57.6.15.1.3VlanList2read-onlysecond VlanId List of specific MSTP instance.
VLA rldot1sMstpInstanceVlanId2049To30721.3.6.1.4.1.89.57.6.15.1.4VlanList3read-onlythird VlanId List of specific MSTP instance.
VLA rldot1sMstpInstanceVlanId3073To40941.3.6.1.4.1.89.57.6.15.1.5VlanList4read-onlyfourth VlanId List of specific MSTP instance.
rldot1dTpAgingTime1.3.6.1.4.1.89.57.7
INT rldot1dTpAgingTimeMin1.3.6.1.4.1.89.57.7.1INTEGERread-onlyThe min timeout period in seconds for aging out dynamically learned forwarding information.
INT rldot1dTpAgingTimeMax1.3.6.1.4.1.89.57.7.2INTEGERread-onlyThe max timeout period in seconds for aging out dynamically learned forwarding information.

FAQ

What would I check with Dell-BRIDGEMIBOBJECTS-MIB on a Dell switch to prevent a Layer 2 loop?
It exposes per-VLAN Spanning Tree enable/type settings and port priority group assignments, letting an administrator confirm STP is enabled and operating in the expected mode per VLAN, plus a trap-variable object for STP topology-change notifications.

Is Dell-BRIDGEMIBOBJECTS-MIB used on its own or with the standard Bridge MIB?
It's typically loaded alongside the standard BRIDGE-MIB (dot1dBridge), since its object names and semantics parallel and augment that IETF standard — the "rl" prefix reflects its RapidCity/Redline switching lineage.

RFC description

Dell private MIB module defining bridge management objects for monitoring and managing Dell PowerConnect switches and networking devices.

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