SWITCH-MSTP-MIB

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Organization: Raisecom, Inc.

Last Updated: 2007-01-15

Category: Switch Management - Raisecom

Description: Manages Raisecom MSTP instance configuration, port roles, and multiple spanning tree topology.

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What Is SWITCH-MSTP-MIB?

SWITCH-MSTP-MIB is a Raisecom proprietary MIB implementing the Multiple Spanning Tree Protocol (MSTP) for managing loop-free Layer 2 topologies across multiple VLANs mapped to spanning tree instances. It exposes configuration and state data including MSTP admin enable status, maximum hop count, protocol version, MST region identity (name, revision level, digest), and Common and Internal Spanning Tree (CIST) root bridge and root path cost information. Monitoring it is central to verifying the software health of the switch's loop-prevention mechanism, since an unexpected root bridge change, a region digest mismatch, or hop-count exhaustion can directly explain a network outage, broadcast storm, or unintended traffic blackholing. It implements the IEEE MSTP standard (802.1s/802.1Q), so correct operation depends on region parameters matching across all participating switches. It is deployed on Raisecom switches used in enterprise or metro Ethernet networks that need multiple, VLAN-mapped spanning tree instances for loop prevention. Engineers can download the SWITCH-MSTP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SWITCH-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

Raisecom managed Ethernet switch

Monitoring Examples

An admin polls rcMstpBridgeCistRoot and rcMstpBridgeCistExternalRootCost to confirm the expected switch is still the CIST root and that the root path cost hasn't changed unexpectedly after a topology event. rcMstpBridgeRegionName, rcMstpBridgeRegionRevLevel, and rcMstpBridgeRegionDigest are compared across switches to catch an MST region mismatch, a common cause of ports unexpectedly blocking between switches that should belong to the same region. rcMstpBridgeAdminStp and rcMstpBridgeMaxHops confirm MSTP is enabled and the hop-count limit is set correctly to avoid premature BPDU aging in large topologies.

What Can Be Monitored

MSTP admin enable/disable state
MST region name, revision level, and digest
CIST root bridge identifier
CIST external root path cost
maximum hop count
protocol version supported

Imported Objects

From BRIDGE-MIB

BridgeId

From RAISECOM-BASE-MIB

iscomSwitch

OBJECT-IDENTITY

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
RowStatus
TimeStamp
TruthValue

From SWITCH-TC

Vlanset

How to Use in IPNetwork Monitor

Example using rcMstpPortRxTcnBpduCounter OID:

Select a Raisecom managed Ethernet switch (MSTP loop-prevention/region status) 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 rcMstpPortRxTcnBpduCounter 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. It reports the received Topology Change Notification (TCN) Messages. 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
rcMstp	1.3.6.1.4.1.8886.6.1.24			The MIB for Multiple Spanning Tree Protocol.
T/F rcMstpBpduFilterEnable	1.3.6.1.4.1.8886.6.1.24.3.1.18	TruthValue	read-write	Bpdu filter status on edge port, when it is enabled,the edge port drop the received bpdu packets, and does not send any bpdu packet.
rcMstpBridge	1.3.6.1.4.1.8886.6.1.24.2
T/F rcMstpBridgeAdminStp	1.3.6.1.4.1.8886.6.1.24.2.1	TruthValue	read-write	The administrative value of the bridge. A value of TRUE(1) indicates the bridge should enable stp. A value of FALSE(2) indicates the bridge should disable stp.
I32 rcMstpBridgeCistExternalRootCost	1.3.6.1.4.1.8886.6.1.24.2.12	Integer32	read-only	The CIST path cost from the bridge to the CIST Root.
BRI rcMstpBridgeCistRoot	1.3.6.1.4.1.8886.6.1.24.2.11	BridgeId	read-only	The Bridge Identifier of the current CIST Root.
MAC rcMstpBridgeDestMacAddress	1.3.6.1.4.1.8886.6.1.24.2.15	MacAddress	read-write	Specifies the destination MAC address of the provider network STP PDUs.
U32 rcMstpBridgeDiameter	1.3.6.1.4.1.8886.6.1.24.2.13	Unsigned32	read-write	For diameter, specify the maximum number of switches between any two end stations, only for CIST.
I32 rcMstpBridgeMaxHops	1.3.6.1.4.1.8886.6.1.24.2.2	Integer32	read-write	The maximum number of hops for a particular Spanning Tree instance. It defines the initial value of remainingHops for MSTI information generated at the boundary of an MSTI region. 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.
INT rcMstpBridgeProtocolVersion	1.3.6.1.4.1.8886.6.1.24.2.4	INTEGER	read-write	This object is relevant if the Bridges can supply a number of versions of STP. For GET operation this object reflects the mode in which the Bridge works currently. If the Bridge works currently in the version, not listed here, the value unknown(15) should be returned. For SET operation the value unknown(15), forceNonStp(0) and forceDot1w(2) must be rejected. Another value may be rejected too if the Bridge does not support correspond mode (see rcMstpBridgeVersionSupported).
OCT rcMstpBridgeRegionDigest	1.3.6.1.4.1.8886.6.1.24.2.10	OCTET STRING	read-only	The Configuration Digest derived from MST Configuration Table.
INT rcMstpBridgeRegionEditBufferOperation	1.3.6.1.4.1.8886.6.1.24.2.14	INTEGER	read-write	Indicates the operation that is performed on the Region Config Edit Buffer. other(1) -- none of the following operation. active(2) -- commit changes in the Edit Buffer. The successful operation of this action will make the changes effective on the device. If the object is set active, the rcMstpBridgeRegionEditName , rcMstpBridgeRegionEditRevLevel and rcMstpXstInstanceEditVlansMap, will be copied from 'edit buffer' to the 'operate buffer', then the three object will be activated at the same time. This object always returns other(1) when it is read.
STR rcMstpBridgeRegionEditName	1.3.6.1.4.1.8886.6.1.24.2.7	DisplayString	read-write	Set region name, the inputs will be actived after active operation. The region name identifies the MST region and is used as one of the inputs in the computation of the MST Identifier. If and only if the rcMstpBridgeRegionEditBufferOperation is set active, the object will be actived for region configuration along with the other region configuration parameters (rcMstpBridgeRegionEditRevLevel, rcMstpXstInstanceEditVlansMap).
I32 rcMstpBridgeRegionEditRevLevel	1.3.6.1.4.1.8886.6.1.24.2.9	Integer32	read-write	Set revision level, the inputs will be actived after active operation. This object identifies the MST revision that identifies the MST region and is used as one of the inputs in the computation of the MST configuration Identifier. If and only if the rcMstpBridgeRegionEditBufferOperation is set active the object will active for region configuration along with other two region configuration parameters (rcMstpBridgeRegionEditName , rcMstpXstInstanceEditVlansMap).
I32 rcMstpBridgeRegionFormatSelector	1.3.6.1.4.1.8886.6.1.24.2.5	Integer32	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. Other number is not accepted.
STR rcMstpBridgeRegionName	1.3.6.1.4.1.8886.6.1.24.2.6	DisplayString	read-only	The region name identifies the MST region and is used as one of the inputs in the computation of the MST Identifier.
I32 rcMstpBridgeRegionRevLevel	1.3.6.1.4.1.8886.6.1.24.2.8	Integer32	read-only	This object identifies the MST revision that identifies the MST region and is used as one of the inputs in the computation of the MST configuration Identifier.
BIT rcMstpBridgeVersionSupported	1.3.6.1.4.1.8886.6.1.24.2.3	Bits	read-only	An indication of which Spanning Tree Protocol the Bridge supports . The bit nonStp(0) indicates, the Bridge doesn't support any Spanning Tree Protocol. The bit 'dot1d1998(1)' indicates the Spanning Tree Protocol specified in IEEE 802.1D-1998, 'dot1w(2)' indicates the Rapid Spanning Tree Protocol specified in IEEE Std 802.1w, 'dot1d2004(3)' indicates IEEE Std 802.1D-2004 and 'dot1s(4)'means MSTP IEEE Std 802.1s. When the bridge supprts a non-listed vesrion, the bit unknown(15) should be set.
I32 rcMstpCfgXstId	1.3.6.1.4.1.8886.6.1.24.7.1.1	Integer32	not-accessible	The MST instance ID, the value of which is in the range from 0 to 4095. The instances of this table entry with rcMstpCfgXstId of zero is automatically created by the device and can not modified.
NTF rcMstpLoopGuardStateChange	1.3.6.1.4.1.8886.6.1.24.1.5			A rcMstpLoopGuardStateChange trap is sent by a bridge when the loop guard state of any of its configured ports in any instance (CIST or MSTI) changed
NTF rcMstpNewRootBridge	1.3.6.1.4.1.8886.6.1.24.1.1			Becoming the new root of the Spanning Tree in the CIST or in any MSTI.The trap is sent by a bridge soon after its election as the new root Port.
NTF rcMstpNewRootPort	1.3.6.1.4.1.8886.6.1.24.1.2			The root Port of the Spanning Tree changed in the CIST or in any MSTI. The trap is sent by a bridge soon after its election as the new root Port.
INT rcMstpPortAdminEdgePort	1.3.6.1.4.1.8886.6.1.24.3.1.4	INTEGER	read-write	The administrative edged port status of this port. A value of forceTrue(0) indicates that this port should always be treated as edged port. A value of forceFalse(1) indicates that this port should not be treated as edged port. A value of auto(2) indicates that this port is considered to be an edged port if MSTP detect that this port is connected to the terminals.
T/F rcMstpPortAdminMACEnable	1.3.6.1.4.1.8886.6.1.24.3.1.2	TruthValue	read-write	The enabled/disabled status of the port. Set TRUE(1) ,the stp status of the port will be enabled, otherwise it will be disabled.
T/F rcMstpPortAdminStp	1.3.6.1.4.1.8886.6.1.24.3.1.5	TruthValue	read-write	Ports with this object set as false(2) do not participate in any STP computation; they are always in Forwarding state, do not send any BPDU and all BPDUs received on these Ports will be discarded. Such ports are used to define the STP termination point of the LAN.
rcMstpPortEntry	1.3.6.1.4.1.8886.6.1.24.3.1		not-accessible	Entry of mstp port table
I32 rcMstpPortIndex	1.3.6.1.4.1.8886.6.1.24.3.1.1	Integer32	not-accessible	A unique value, greater than zero, for each Port. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization.
INT rcMstpPortLoopGuard	1.3.6.1.4.1.8886.6.1.24.3.1.17	INTEGER	read-write	Port mstp loop protect enable status. If a port in some instance did not received any bpdu in three times of hello-time, it will age and reselect. If there was no link fault in the tree but other reason lead to bpdu loss, reselect would create a loopback in the topology. To prevent this, a loop guard enabled port will not age in any case
T/F rcMstpPortOperMACEnable	1.3.6.1.4.1.8886.6.1.24.3.1.3	TruthValue	read-only	The enabled/disabled status of the port. The value of TRUE(1) means the stp status of the port is enabled, otherwise it is disabled.
INT rcMstpPortOperStp	1.3.6.1.4.1.8886.6.1.24.3.1.6	INTEGER	read-only	port mstp enable operate status
INT rcMstpPortPartnerMode	1.3.6.1.4.1.8886.6.1.24.3.1.19	INTEGER	read-only	the partner mstp mode of this port.
INT rcMstpPortRootGuard	1.3.6.1.4.1.8886.6.1.24.3.1.7	INTEGER	read-write	port mstp rootport protect enable status
C32 rcMstpPortRxCfgBpduCounter	1.3.6.1.4.1.8886.6.1.24.3.1.9	Counter32	read-only	Received Configuration BPDUs.
C32 rcMstpPortRxMstBpduCounter	1.3.6.1.4.1.8886.6.1.24.3.1.11	Counter32	read-only	Received MST BPDUs.
C32 rcMstpPortRxRstBpduCounter	1.3.6.1.4.1.8886.6.1.24.3.1.10	Counter32	read-only	Received RST BPDUs.
C32 rcMstpPortRxTcnBpduCounterEx	1.3.6.1.4.1.8886.6.1.24.3.1.8	Counter32	read-only	Received Topology Change Notification (TCN) Messages.
T/F rcMstpPortStatisticsClear	1.3.6.1.4.1.8886.6.1.24.3.1.16	TruthValue	read-write	Clear port statistics.
rcMstpPortTable	1.3.6.1.4.1.8886.6.1.24.3		not-accessible	Mstp port table
C32 rcMstpPortTxCfgBpduCounter	1.3.6.1.4.1.8886.6.1.24.3.1.13	Counter32	read-only	Transmitted Configuration BPDUs.
C32 rcMstpPortTxMstBpduCounter	1.3.6.1.4.1.8886.6.1.24.3.1.15	Counter32	read-only	Transmitted MST BPDUs.
C32 rcMstpPortTxRstBpduCounter	1.3.6.1.4.1.8886.6.1.24.3.1.14	Counter32	read-only	Transmitted RST BPDUs.
C32 rcMstpPortTxTcnBpduCounter	1.3.6.1.4.1.8886.6.1.24.3.1.12	Counter32	read-only	Transmitted Topology Change Notification (TCN) Messages.
NTF rcMstpRootGuardStateChange	1.3.6.1.4.1.8886.6.1.24.1.4			A rcMstpLoopGuardStateChange trap is sent by a bridge when the root guard state of any of its configured ports in any instance (CIST or MSTI) changed
NTF rcMstpTopologyChange	1.3.6.1.4.1.8886.6.1.24.1.3			A rcMstpTopologyChange trap is sent by a bridge when any of its configured ports in any instance (CIST or MSTI) transits from Learning state to Forwarding state, or from Forwarding state to Blocking state.
rcMstpTraps	1.3.6.1.4.1.8886.6.1.24.1
BRI rcMstpXstBridgeId	1.3.6.1.4.1.8886.6.1.24.6.1.2	BridgeId	read-only	Bridge ID of the corresponding Spanning Tree instance.
I32 rcMstpXstBridgePriority	1.3.6.1.4.1.8886.6.1.24.7.1.2	Integer32	read-write	Bridge priority, in steps of 4096.
rcMstpXstConfigEntry	1.3.6.1.4.1.8886.6.1.24.7.1		not-accessible	Entry of mstp Instance config table
rcMstpXstConfigTable	1.3.6.1.4.1.8886.6.1.24.7		not-accessible	Mstp Instance config table
BRI rcMstpXstDesignatedRoot	1.3.6.1.4.1.8886.6.1.24.6.1.3	BridgeId	read-only	The 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.
rcMstpXstEntry	1.3.6.1.4.1.8886.6.1.24.6.1		not-accessible	Entry of mstp Instance table
I32 rcMstpXstId	1.3.6.1.4.1.8886.6.1.24.6.1.1	Integer32	not-accessible	The MST instance ID, the value of which is in the range from 0 to 4095. The instances of this table entry with rcMstpXstId of zero is automatically created by the device and can not modified.
rcMstpXstInstanceEditEntry	1.3.6.1.4.1.8886.6.1.24.5.1		not-accessible	Mstp Instance vlan edit table
U32 rcMstpXstInstanceEditId	1.3.6.1.4.1.8886.6.1.24.5.1.1	Unsigned32	not-accessible	The MST instance ID, the value of which is in the range from 0 to 4095. The instances of this table entry with rcMstpXstInstanceEditId of zero is automatically created by the device and can not modified.
ROW rcMstpXstInstanceEditRowStatus	1.3.6.1.4.1.8886.6.1.24.5.1.3	RowStatus	read-create	This object controls the creation and deletion of a row in rcMstpXstInstanceEditTable. When creating an entry in this table, 'createAndGo' method is used and the value of this object is set to 'active'. Deactivation of an 'active' entry is not allowed. When deleting an entry in this table, 'destroy' method is used. Once a row becomes active, value in any other column within such a row may be modified. When a row is active, setting the instance of rcMstpXstInstanceEditVlansMap for the MST instance to the value of zero length can not be allowed.
rcMstpXstInstanceEditTable	1.3.6.1.4.1.8886.6.1.24.5		not-accessible	Mstp Instance vlan edit table
VLA rcMstpXstInstanceEditVlansMap	1.3.6.1.4.1.8886.6.1.24.5.1.2	Vlanset	read-create	Each octet within this value specifies a set of eight vlans, with the first octet specifying vlan 1 through 8, the second octet specifying vlan 9 through 16, etc. Within each octet, the most significant bit represents the lowest numbered vlan, and the least significant bit represents the highest numbered vlan. Thus, each vlan is represented by a single bit within the value of this object. If that bit has a value of '1' then that vlan is included in the set of vlans; the vlan is not included if its bit has a value of '0'. If valn map is overlap with another Instance, the map will not success. If and only if the rcMstpXstRegionEditBufferOperation is set active, the object will active for region configuration along with other two region configuration parameters (rcMstpRegionEditName , rcMstpRegionEditRevLevel ).
rcMstpXstInstanceEntry	1.3.6.1.4.1.8886.6.1.24.4.1		not-accessible	Entry of mstp Instance vlan table
I32 rcMstpXstInstanceId	1.3.6.1.4.1.8886.6.1.24.4.1.1	Integer32	not-accessible	A unique value identifies an instance. The entry of this table with index 0 always represents the CIST instance.
rcMstpXstInstanceTable	1.3.6.1.4.1.8886.6.1.24.4		not-accessible	Mstp Instance vlan table
VLA rcMstpXstInstanceVlansMapped	1.3.6.1.4.1.8886.6.1.24.4.1.2	Vlanset	read-only	Each octet within this value specifies a set of eight vlans, with the first octet specifying vlan 1 through 8, the second octet specifying vlan 9 through 16, etc. Within each octet, the most significant bit represents the lowest numbered vlan, and the least significant bit represents the highest numbered vlan. Thus, each vlan is represented by a single bit within the value of this object. If that bit has a value of '1', then that vlan is included in the set of vlans; the vlan is not included if its bit has a value of '0'.
I32 rcMstpXstInternalRootCost	1.3.6.1.4.1.8886.6.1.24.6.1.4	Integer32	read-only	The cost of the path to the root of the corresponding Spanning Tree instance as seen from this bridge.
U32 rcMstpXstMasterPort	1.3.6.1.4.1.8886.6.1.24.6.1.6	Unsigned32	read-only	Master port of the corresponding Spanning Tree instance. 0 for CIST.
I32 rcMstpXstPortAdminInternalPathCost	1.3.6.1.4.1.8886.6.1.24.9.1.4	Integer32	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. The value 0 means, that the cost will be selected automatically.
I32 rcMstpXstPortCfgIndex	1.3.6.1.4.1.8886.6.1.24.9.1.2	Integer32	not-accessible	A unique value, greater than zero, for each Port. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization.
I32 rcMstpXstPortCfgXstId	1.3.6.1.4.1.8886.6.1.24.9.1.1	Integer32	not-accessible	The MST instance ID, the value of which is in the range from 0 to 4095. The instances of this table entry with rcMstpXstPortCfgXstId of zero is automatically created by the device and can not modified.
rcMstpXstPortConfigEntry	1.3.6.1.4.1.8886.6.1.24.9.1		not-accessible	Entry of mstp Instance port config table
rcMstpXstPortConfigTable	1.3.6.1.4.1.8886.6.1.24.9		not-accessible	Mstp Instance port config table
BRI rcMstpXstPortDesignatedBridge	1.3.6.1.4.1.8886.6.1.24.8.1.9	BridgeId	read-only	The Bridge Identifier of the bridge which this port considers to be the Designated Bridge for this port's segment.
I32 rcMstpXstPortDesignatedPort	1.3.6.1.4.1.8886.6.1.24.8.1.10	Integer32	read-only	The Port Identifier of the port on the Designated Bridge for this port's segment.
BRI rcMstpXstPortDesignatedRoot	1.3.6.1.4.1.8886.6.1.24.8.1.5	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.
rcMstpXstPortEntry	1.3.6.1.4.1.8886.6.1.24.8.1		not-accessible	Entry of mstp Instance port table
I32 rcMstpXstPortExternalRootCost	1.3.6.1.4.1.8886.6.1.24.8.1.6	Integer32	read-only	External Root Cost for CIST. the value is always 0, for MSTI.
I32 rcMstpXstPortIndex	1.3.6.1.4.1.8886.6.1.24.8.1.2	Integer32	not-accessible	A unique value, greater than zero, for each Port. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization.
I32 rcMstpXstPortInternalRootCost	1.3.6.1.4.1.8886.6.1.24.8.1.8	Integer32	read-only	Port internal root cost of the corresponding Spanning Tree.
INT rcMstpXstPortLoopGuardState	1.3.6.1.4.1.8886.6.1.24.8.1.13	INTEGER	read-only	The loop guard state of port in special instance. 'yes' means an alternate or root port was enabled loop guard and did not received any BPDU int three times of hello-time in the instance.
I32 rcMstpXstPortOperInternalPathCost	1.3.6.1.4.1.8886.6.1.24.8.1.11	Integer32	read-only	Port Internal path cost of the corresponding Spanning Tree.
I32 rcMstpXstPortPriority	1.3.6.1.4.1.8886.6.1.24.9.1.3	Integer32	read-write	Port priority, in steps of 16.
BRI rcMstpXstPortRegionalRoot	1.3.6.1.4.1.8886.6.1.24.8.1.7	BridgeId	read-only	Regional Root of the corresponding Spanning Tree.
INT rcMstpXstPortRole	1.3.6.1.4.1.8886.6.1.24.8.1.4	INTEGER	read-only	Indicates this port's role on the corresponding Spanning Tree instance. disabled(1) -- this port has no role on this MST instance. alternate(2) -- this port has the role of alternate port on this MST instance. backup(3) -- this port has the role of backup port on this MST instance. root(4)-- this port has the role of root port on this MST instance. designated(5) -- this port has the role of designated port on this MST instance. master(6) -- this port has the role of master port on this MST instance. unknown(7) - unknown reason
INT rcMstpXstPortRootGuardState	1.3.6.1.4.1.8886.6.1.24.8.1.12	INTEGER	read-only	The root guard state of port in special instance. 'yes' means a port was enabled root guard and received BPDU that include higher priority than the current root priority in the instance. To prevent attack, port in this instance turn discarding.
INT rcMstpXstPortState	1.3.6.1.4.1.8886.6.1.24.8.1.3	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. For ports which are administratively disabled this object will have a value of disabled(0).
rcMstpXstPortTable	1.3.6.1.4.1.8886.6.1.24.8		not-accessible	Mstp Instance port table
I32 rcMstpXstPortXstId	1.3.6.1.4.1.8886.6.1.24.8.1.1	Integer32	not-accessible	The MST instance ID, the value of which is in the range from 0 to 4095. The instances of this table entry with rcMstpXstPortXstId of zero is automatically created by the device and can not modified.
T/F rcMstpXstPrimaryRoot	1.3.6.1.4.1.8886.6.1.24.7.1.3	TruthValue	read-write	To configure the switch to become the root bridge for corresponding Spanning Tree instance.
U32 rcMstpXstRootPort	1.3.6.1.4.1.8886.6.1.24.6.1.5	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.
T/F rcMstpXstSecondaryRoot	1.3.6.1.4.1.8886.6.1.24.7.1.4	TruthValue	read-write	To configure the switch to become the backup root bridge for corresponding Spanning Tree instance.
rcMstpXstTable	1.3.6.1.4.1.8886.6.1.24.6		not-accessible	Mstp Instance table
TIK rcMstpXstTimeSinceTopologyChange	1.3.6.1.4.1.8886.6.1.24.6.1.7	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).
T/F rcMstpXstTopologyChangeFlag	1.3.6.1.4.1.8886.6.1.24.6.1.9	TruthValue	read-only	True(1) if the tcWhile timer is non-zero for any port for the corresponding Spanning Tree instance, false(2) otherwise.
C32 rcMstpXstTopologyChangesCount	1.3.6.1.4.1.8886.6.1.24.6.1.8	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 tcWhiletimer for any port has been non-zero).

RFC description

Monitors Multiple Spanning Tree Protocol with root guard, loop guard and BPDU filtering on Raisecom switches.

Start monitoring Raisecom managed Ethernet switch (MSTP loop-prevention/region status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download SWITCH-MSTP-MIB