ENTERASYS-MSTP-MIB

All MIBs › ENTERASYS-MSTP-MIB

Organization: Enterasys Networks, Inc

Last Updated: 2006-11-09

Category: Protocol: STP, Technology: Bridging, Vendor: Enterasys/Cabletron

Description: Enterasys Networks proprietary MIB for managing Multiple Spanning Tree Protocol (IEEE 802.1s) instances and bridge parameters.

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What Is ENTERASYS-MSTP-MIB?

ENTERASYS-MSTP-MIB is a proprietary MIB module from Enterasys Networks (now part of Extreme Networks) that manages Multiple Spanning Tree Protocol (IEEE 802.1s) instances on Enterasys switches, serving as an interim vendor solution before a standard IETF MSTP MIB existed. It exposes configuration and operational-status data for MST instances (MSTIs), including how many instances are supported and in use, per-instance identifiers, and the mapping between forwarding database IDs and MST instance IDs. Administrators use it to monitor the software-level health of the spanning tree topology on a device, specifically the operational status of each MSTI, to confirm loop-prevention logic is functioning and that VLAN-to-instance assignments match the intended design. The module is explicitly a stand-in for the IEEE 802.1s standard and interoperates with the base IEEE 802.1D/802.1w bridge MIB framework. It is deployed on Enterasys/Extreme enterprise switches in campus or data-center networks running multiple VLANs over a redundant, loop-free Layer 2 topology. Engineers can download the ENTERASYS-MSTP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ENTERASYS-MSTP-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

Enterasys/Extreme Networks managed switches

Monitoring Examples

An operator would compare etsysMstpNumMsts to etsysMstpMaxSupportedMsts to see how close a switch is to running out of MST instance capacity, and walk etsysMstpMstiTable/etsysMstpMstiEntry checking etsysMstpMstiStatus for each instance to catch one that failed to come up. The etsysMstpAllocTable ties forwarding database IDs (etsysMstpFdbId) to MST instance IDs (etsysMstpMstIdOfFdb), letting the admin verify that etsysMstpConfigTable's VLAN mappings match what is actually installed. A non-active etsysMstpMstiStatus on an instance that should be up would flag a spanning-tree misconfiguration or resource exhaustion before it causes a Layer 2 loop or blackhole.

What Can Be Monitored

MST instance count vs. maximum supported
MSTI operational status
MST-ID to forwarding-database mapping
spanning tree instance configuration
VLAN-to-MSTI allocation

Imported Objects

From BRIDGE-MIB

BridgeId

From ENTERASYS-MIB-NAMES

etsysModules

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From P-BRIDGE-MIB

EnabledStatus

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using etsysMstpTopologyChangeCount OID:

Select an Enterasys Networks switch (legacy, later Extreme Networks) (Multiple Spanning Tree Protocol, IEEE 802.1s) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type etsysMstpTopologyChangeCount into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The total number of topology changes detected by the corresponding Spanning Tree instance since the management entity was last reset or initialized (specifically, the count of times that the tcWhile timer for any port has been non-zero). On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
etsysMstpMIB	1.3.6.1.4.1.5624.1.2.28			This mib module defines a portion of the SNMP enterprise MIBs under Enterasys Networks' enterprise OID pertaining to the Multiple Spanning Tree Protocol defined by IEEE 802.1s. This MIB is used to manage devices which support MSTP. It will be supported until a standard IEEE 802.1s MIB has been defined by the IETF.
etsysMstpObjects	1.3.6.1.4.1.5624.1.2.28.1
etsysMstpNotifications	1.3.6.1.4.1.5624.1.2.28.1.0
NTF etsysMstpLoopProtectEvent	1.3.6.1.4.1.5624.1.2.28.1.0.1			This notification indicates that a Loop Protect event has occurred on a bridge port on an MSTI.
etsysMstpConfig	1.3.6.1.4.1.5624.1.2.28.1.1
U32 etsysMstpMaxMstId	1.3.6.1.4.1.5624.1.2.28.1.1.1	Unsigned32	read-only	The maximum Multiple Spanning Tree (MST) instance ID that this device supports.
U32 etsysMstpMaxSupportedMsts	1.3.6.1.4.1.5624.1.2.28.1.1.2	Unsigned32	read-only	The maximum number of Multiple Spanning Tree instances that this device supports. The value of this object is not affected by the value of etsysMstpMaxConfigurableMsts. This object represents the maximum value that etsysMstpMaxConfigurableMsts can be set to.
U32 etsysMstpNumMsts	1.3.6.1.4.1.5624.1.2.28.1.1.3	Unsigned32	read-only	The current number of Multiple Spanning Tree instances that are configured in this device.
etsysMstpMstiTable	1.3.6.1.4.1.5624.1.2.28.1.1.4		not-accessible	The list of configured Multiple Spanning Tree instances.
etsysMstpMstiEntry	1.3.6.1.4.1.5624.1.2.28.1.1.4.1		not-accessible	A table entry representing a Multiple Spanning Tree instance.
U32 etsysMstpMstId	1.3.6.1.4.1.5624.1.2.28.1.1.4.1.1	Unsigned32	not-accessible	The unique ID of this Multiple Spanning Tree instance. This value SHALL be between 1 and etsysMstpMaxMstId inclusively.
ROW etsysMstpMstiStatus	1.3.6.1.4.1.5624.1.2.28.1.1.4.1.2	RowStatus	read-create	This object allows for the dynamic creation and deletion of the corresponding Spanning Tree instance. Creation and activation of a conceptual row in this table MUST be performed as a single operation -- by setting this object to createAndGo(4) -- and suspension of an active conceptual row is not supported. Consequently, setting this object to createAndWait(5) or notInService(2) SHALL fail. Setting this object to destroy(6) SHALL fail if the corresponding Spanning Tree instance has one or more FIDs allocated to it in the FID to MSTID Allocation Table (etsysMstpAllocTable). Refer to the RowStatus convention for further details on the behavior of this object.
etsysMstpAllocTable	1.3.6.1.4.1.5624.1.2.28.1.1.5		not-accessible	A table that contains the mapping of Filtering Databases to Spanning Tree instances.
etsysMstpAllocEntry	1.3.6.1.4.1.5624.1.2.28.1.1.5.1		not-accessible	The mapping of a particular Filtering Database to a Spanning Tree instance.
U32 etsysMstpFdbId	1.3.6.1.4.1.5624.1.2.28.1.1.5.1.1	Unsigned32	not-accessible	The unique ID of the Filtering Database to which the information in this table entry applies. This value SHALL be between 1 and dot1qMaxVlanId inclusively.
U32 etsysMstpMstIdOfFdb	1.3.6.1.4.1.5624.1.2.28.1.1.5.1.2	Unsigned32	read-write	The ID of the Spanning Tree instance to which the corresponding FID is mapped. This ID must either be 0 (i.e., the CIST) or be a value which is present in the MSTI Table (etsysMstpMstiTable).
etsysMstpConfigTable	1.3.6.1.4.1.5624.1.2.28.1.1.6		not-accessible	A table that contains the mapping of VLANs to Spanning Tree instances. This table is a read-only table, its elements derived from the VID to FID allocation table and the FID to MSTID allocation table.
etsysMstpConfigEntry	1.3.6.1.4.1.5624.1.2.28.1.1.6.1		not-accessible	The mapping of a particular VLAN to a Spanning Tree instance.
U32 etsysMstpVlanId	1.3.6.1.4.1.5624.1.2.28.1.1.6.1.1	Unsigned32	not-accessible	The unique ID of the VLAN to which the information in this table entry applies. This value SHALL be between 1 and dot1qMaxVlanId inclusively.
U32 etsysMstpMstIdOfVlan	1.3.6.1.4.1.5624.1.2.28.1.1.6.1.2	Unsigned32	read-only	The ID of the Spanning Tree instance to which the corresponding VLAN is mapped.
U32 etsysMstpFormatSelector	1.3.6.1.4.1.5624.1.2.28.1.1.7	Unsigned32	read-only	The format selector value of the Configuration Identifier. This has a value of 0 to indicate the format specified in the IEEE 802.1s standard.
STR etsysMstpConfigName	1.3.6.1.4.1.5624.1.2.28.1.1.8	SnmpAdminString	read-write	The configuration name of the MST region to which this bridge belongs. The default value is the Bridge Address of this bridge, as a text string using the Hexadecimal Representation defined in IEEE Std. 802.
U32 etsysMstpRevisionLevel	1.3.6.1.4.1.5624.1.2.28.1.1.9	Unsigned32	read-write	The revision level of the MST region to which this bridge belongs.
STR etsysMstpConfigDigest	1.3.6.1.4.1.5624.1.2.28.1.1.10	HexString	read-only	The Configuration Digest derived from the MST Configuration Table.
U32 etsysMstpMaxConfigurableMsts	1.3.6.1.4.1.5624.1.2.28.1.1.11	Unsigned32	read-write	The maximum number of Multiple Spanning Tree instances that can configured on this entity. This object cannot be set to a value greater than the value of etsysMstpMaxSupportedMsts, and cannot be set to a value that is less then the number of currently configured spanning tree instances.
etsysMstpBridge	1.3.6.1.4.1.5624.1.2.28.1.2
BRI etsysMstpCistRegionalRootIdentifier	1.3.6.1.4.1.5624.1.2.28.1.2.1	BridgeId	read-only	The Bridge Identifier of the current CIST Regional Root.
U32 etsysMstpCistPathCost	1.3.6.1.4.1.5624.1.2.28.1.2.2	Unsigned32	read-only	The CIST path cost from this bridge to the CIST Regional Root.
U32 etsysMstpMaxHopCount	1.3.6.1.4.1.5624.1.2.28.1.2.3	Unsigned32	read-write	The maximum number of hops that the information for a particular Spanning Tree instance may traverse (via relay of BPDUs within the applicable MST region) before being discarded. This value is used only if this bridge is the CIST Regional Root and/or the MSTI Regional Root for one or more Multiple Spanning Tree instances.
etsysMstpBridgeTable	1.3.6.1.4.1.5624.1.2.28.1.2.4		not-accessible	A table that contains bridge protocol parameter values associated with each configured Multiple Spanning Tree instance.
etsysMstpBridgeEntry	1.3.6.1.4.1.5624.1.2.28.1.2.4.1		not-accessible	A list of information maintained by each Multiple Spanning Tree instance configured on this bridge.
U32 etsysMstpBridgePriority	1.3.6.1.4.1.5624.1.2.28.1.2.4.1.1	Unsigned32	read-write	The value of the priority component of the Bridge ID for the corresponding Spanning Tree instance. Specifically, the four most significant bits of the most significant octet of the (8 octet long) Bridge ID followed by 12 zero bits. Note that this object may only be set to a 16-bit value in which the least significant 12 bits are zero, i.e., permissible values are 0-61440, in steps of 4096.
TIK etsysMstpTimeSinceTopologyChange	1.3.6.1.4.1.5624.1.2.28.1.2.4.1.2	TimeTicks	read-only	The elapsed time, in units of hundredths of a second, since the last time a topology change was detected by the corresponding Spanning Tree instance (specifically, the elapsed time since the tcWhile timer for any port was non-zero).
C32 etsysMstpTopologyChangeCountEx	1.3.6.1.4.1.5624.1.2.28.1.2.4.1.3	Counter32	read-only	The total number of topology changes detected by the corresponding Spanning Tree instance since the management entity was last reset or initialized (specifically, the count of times that the tcWhile timer for any port has been non-zero).
T/F etsysMstpTopologyChangeInProgress	1.3.6.1.4.1.5624.1.2.28.1.2.4.1.4	TruthValue	read-only	True(1) if the tcWhile timer is non-zero for any port for the corresponding Spanning Tree instance, false(2) otherwise.
BRI etsysMstpDesignatedRoot	1.3.6.1.4.1.5624.1.2.28.1.2.4.1.5	BridgeId	read-only	The bridge identifier of the root for the corresponding Spanning Tree instance.
U32 etsysMstpRootPathCost	1.3.6.1.4.1.5624.1.2.28.1.2.4.1.6	Unsigned32	read-only	The cost of the path to the root of the corresponding Spanning Tree instance as seen from this bridge.
U32 etsysMstpRootPort	1.3.6.1.4.1.5624.1.2.28.1.2.4.1.7	Unsigned32	read-only	The port number of the port which offers the lowest cost path from this bridge to the root bridge for the corresponding Spanning Tree instance.
etsysMstpPort	1.3.6.1.4.1.5624.1.2.28.1.3
etsysMstpPortTable	1.3.6.1.4.1.5624.1.2.28.1.3.1		not-accessible	A table that contains port parameter values for each configured Multiple Spanning Tree instance.
etsysMstpPortEntry	1.3.6.1.4.1.5624.1.2.28.1.3.1.1		not-accessible	A list of information maintained for every port by each Multiple Spanning Tree instance configured on this bridge.
NUM etsysMstpPortNumber	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.1	InterfaceIndex	not-accessible	The port number of the port for which this entry contains Multiple Spanning Tree Protocol management information.
U32 etsysMstpPortPriority	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.2	Unsigned32	read-write	The value of the priority field which is contained in the first (in network byte order) octet of the (2 octet long) Port ID for the corresponding Spanning Tree instance. Permissible values are 0-240, in steps of 16.
INT etsysMstpPortState	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.3	INTEGER	read-only	The port's current state in the corresponding Spanning Tree instance as defined by application of the Multiple 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 administratively disabled (see dot1dStpPortEnable), this object will have a value of disabled(1).
U32 etsysMstpPortAdminPathCost	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.4	Unsigned32	read-write	The administratively assigned value for the contribution of this port to the path cost of paths towards the root of the corresponding Spanning Tree instance. Writing a value of '0' assigns the automatically calculated default Path Cost value to the port for this instance. If the default Path Cost is being used, this object returns '0' when read. This complements the object etsysMstpPortOperPathCost, which returns the operational value of the path cost.
U32 etsysMstpPortOperPathCost	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.5	Unsigned32	read-only	The operational value for the contribution of this port to the path cost of paths towards the root of the corresponding Spanning Tree instance.
BRI etsysMstpPortDesignatedRoot	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.6	BridgeId	read-only	The unique Bridge Identifier of the Bridge recorded as the Root of the corresponding Spanning Tree in the Configuration BPDUs transmitted by the Designated Bridge for the segment to which the port is attached.
U32 etsysMstpPortDesignatedCost	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.7	Unsigned32	read-only	The path cost of the Designated Port of the segment connected to this port, for the corresponding Spanning Tree instance. This value is compared to the Root Path Cost field in received bridge PDUs.
BRI etsysMstpPortDesignatedBridge	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.8	BridgeId	read-only	The Bridge Identifier of the bridge which this port considers to be the Designated Bridge for this port's segment on the corresponding Spanning Tree instance.
OCT etsysMstpPortDesignatedPort	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.9	OCTET STRING	read-only	The Port Identifier of the port on the Designated Bridge for this port's segment on the corresponding Spanning Tree instance.
INT etsysMstpPortRoleValue	1.3.6.1.4.1.5624.1.2.28.1.3.1.1.10	INTEGER	read-only	Indicates this port's role on the corresponding Spanning Tree instance. disabled -- this port has no role on this MST instance. root -- this port has the role of root port on this MST instance. designated -- this port has the role of designated port on this MST instance. alternate -- this port has the role of alternate port on this MST instance. backUp -- this port has the role of backup port on this MST instance. master -- this port has the role of master port on this MST instance.
etsysMstpGlobalPortTable	1.3.6.1.4.1.5624.1.2.28.1.3.2		not-accessible	A table that contains port parameter values which apply to all Spanning Tree instances.
etsysMstpGlobalPortEntry	1.3.6.1.4.1.5624.1.2.28.1.3.2.1		not-accessible	A list of information maintained for every port which applies to all Spanning Tree instances.
U32 etsysMstpHelloTime	1.3.6.1.4.1.5624.1.2.28.1.3.2.1.1	Unsigned32	read-only	The amount of time, in hundredths of a second, between the transmission of Configuration bridge PDUs on this port when it has the role of designated port for any Spanning Tree instance. This is the actual value that this bridge is currently using.
U32 etsysMstpPortHelloTime	1.3.6.1.4.1.5624.1.2.28.1.3.2.1.2	Unsigned32	read-write	The value, in hundredths of a second, that all bridges attached to this port's LAN segment use for HelloTime when this bridge is acting as the CIST root.
T/F etsysMstpBoundaryPort	1.3.6.1.4.1.5624.1.2.28.1.3.2.1.3	TruthValue	read-only	True(1) if this port is attached to a LAN which is in a different MST Region than this bridge, false(2) otherwise.
etsysMstpExtn	1.3.6.1.4.1.5624.1.2.28.1.4
ENA etsysMstpAutoEdgeDetection	1.3.6.1.4.1.5624.1.2.28.1.4.1	EnabledStatus	read-write	The enabled/disabled status of automatic edge detection.
ENA etsysMstpBridgeHelloTimeMode	1.3.6.1.4.1.5624.1.2.28.1.4.2	EnabledStatus	read-write	The enabled/disabled status of the legacy bridge hello mode of operation. When enabled, and this bridge is acting as the root bridge, dot1dStpBridgeHelloTime is used. When disabled, and this bridge is acting as the root bridge, etsysMstpPortHelloTime is used.
etsysMstpMstiExtnTable	1.3.6.1.4.1.5624.1.2.28.1.4.3		not-accessible	Extensions to the table of Multiple Spanning Tree instances.
etsysMstpMstiExtnEntry	1.3.6.1.4.1.5624.1.2.28.1.4.3.1		not-accessible	A list of extensions to the information maintained for each Multiple Spanning Tree instance.
ENA etsysMstpMstiExtnBackupRootEnable	1.3.6.1.4.1.5624.1.2.28.1.4.3.1.1	EnabledStatus	read-write	The enabled/disabled status of the Backup Root functionality on this MSTI.
etsysMstpPortExtnTable	1.3.6.1.4.1.5624.1.2.28.1.4.4		not-accessible	Extensions to the table that contains port parameter values for each configured Multiple Spanning Tree instance.
etsysMstpPortExtnEntry	1.3.6.1.4.1.5624.1.2.28.1.4.4.1		not-accessible	A list of extensions to the information maintained for every port by each Multiple Spanning Tree instance configured on this bridge.
INT etsysMstpPortExtnNonForwardingReason	1.3.6.1.4.1.5624.1.2.28.1.4.4.1.1	INTEGER	read-only	Indicates the reason why this port has been placed in a non-forwarding state on this MSTI (other than as a result of normal Spanning Tree protocol operation). none(1) - the port has not been placed in a non-forwarding state due to any exceptional condition. disputed(2) - the port has been placed in listening state because it has a designated role and an inferior designated BPDU has been received. spanGuardLocked(3) - the port has been placed in blocking state because it is configured as an admin edge port and a BPDU has been received. loopProtectEvent(4) - the port has been placed in listening or blocking state because a BPDU timeout has occurred and the port is awaiting reception of a type 2 BPDU on a point-to-point link. loopProtectAdvisory(5) - the port has been placed in listening state because a BPDU timeout has occurred (as with a Loop Protect event), but this condition may be normal because the link partner does not support the Loop Protect feature. loopbackDetected(6) - the port has been placed in blocking state because a loopback condition has been detected.
ENA etsysMstpPortExtnLoopProtectEnable	1.3.6.1.4.1.5624.1.2.28.1.4.4.1.2	EnabledStatus	read-write	The enabled/disabled status of the Loop Protect functionality for this port on this MSTI.
T/F etsysMstpPortExtnLoopProtectBlocking	1.3.6.1.4.1.5624.1.2.28.1.4.4.1.3	TruthValue	read-write	The state of this port on this MSTI with respect to the Loop Protect feature. true(1) - this port is being held in the blocking state by the Loop Protect feature. false(2) - this port is not being held in the blocking state by the Loop Protect feature. When this object has a value of true(1) setting its value to false(2) will cause the Loop Protect feature to no longer hold the port in the blocking state. All other set operations on this object are undefined and MUST NOT have any effect.
etsysMstpConformance	1.3.6.1.4.1.5624.1.2.28.2
etsysMstpGroups	1.3.6.1.4.1.5624.1.2.28.2.1
etsysMstpConfigGroup	1.3.6.1.4.1.5624.1.2.28.2.1.1			A collection of objects providing configuration support for the Multiple Spanning Tree Protocol.
etsysMstpBridgeGroup	1.3.6.1.4.1.5624.1.2.28.2.1.2			A collection of objects providing bridge-level support for the Multiple Spanning Tree Protocol.
etsysMstpPortGroup	1.3.6.1.4.1.5624.1.2.28.2.1.3			A collection of objects providing port-level support for the Multiple Spanning Tree Protocol.
etsysMstpAutoEdgeDetectGroup	1.3.6.1.4.1.5624.1.2.28.2.1.4			An object for controlling Auto Edge Detection.
etsysMstpBridgeHelloTimeGroup	1.3.6.1.4.1.5624.1.2.28.2.1.5			An object for modifying the Hello Time mode.
etsysMstpBackupRootGroup	1.3.6.1.4.1.5624.1.2.28.2.1.6			An object for enabling and disabling the Backup Root feature.
etsysMstpMaxInstancesGroup	1.3.6.1.4.1.5624.1.2.28.2.1.7			An object for restricting the number of configurable MSTIs.
etsysMstpNonForwardingReasonGroup	1.3.6.1.4.1.5624.1.2.28.2.1.8			An object that indicates the reason for an exceptional non-forwarding condition per port/MSTI.
etsysMstpLoopProtectGroup	1.3.6.1.4.1.5624.1.2.28.2.1.9			A collection of objects providing support for the Loop Protect feature.
etsysMstpLoopProtectNotificationGroup	1.3.6.1.4.1.5624.1.2.28.2.1.10			The Loop Protect Event Notification for MSTIs.
etsysMstpCompliances	1.3.6.1.4.1.5624.1.2.28.2.2
etsysMstpCompliance	1.3.6.1.4.1.5624.1.2.28.2.2.1			The compliance statement for devices that support the Multiple Spanning Tree Protocol.

RFC description

Manages Multiple Spanning Tree Protocol (IEEE 802.1s) configuration and monitoring on Enterasys Network switches.

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Download ENTERASYS-MSTP-MIB