FORCE10-MSTP-MIB

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Organization: Force10 Networks, Inc.

Last Updated: 2008-04-01

Category: Protocol: STP, Vendor: Dell

Description: Dell Force10 Networks Multiple Spanning Tree Protocol MIB providing MSTP instance, port, and topology change management objects.

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What Is FORCE10-MSTP-MIB?

FORCE10-MSTP-MIB is a Force10 Networks (now Dell) vendor MIB implementing IEEE 802.1s Multiple and Rapid Spanning Tree Protocol management, derived from the draft-ietf-bridge MSTP MIB. It defines the mstpGen scalar group covering bridge-wide timers and capability objects — mstpGenBridgeMaxAge/HelloTime/ForwardDelay (configured) alongside their operational counterparts mstpGenMaxAge/HelloTime/ForwardDelay, mstpGenMaxHops, mstpGenHoldTime, mstpGenMigrateTime, mstpGenPathCostDefault, mstpGenCapable, and mstpGenForceVersion — plus, per its textual conventions, per-instance and per-port MSTI objects using MstiInstanceIndex, PortIndex, and BpduCounter. It exposes spanning-tree protocol operating mode, timer configuration, and BPDU counters, letting operators confirm which STP variant (802.1D, RSTP, or MSTP) a switch is actually running and whether its timers match the rest of the topology. It depends on the standard BRIDGE-MIB (dot1dBridge) and Q-BRIDGE-MIB (VlanId) for bridge/VLAN indexing that it extends with MSTP-specific instance objects. It is deployed on Force10 Ethernet switches participating in multi-instance spanning tree topologies, and administrators can download the FORCE10-MSTP-MIB file to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in FORCE10-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

Force10 Networks (Dell) Ethernet switches

Monitoring Examples

An operator polls mstpGenCapable and mstpGenForceVersion to confirm a switch is actually running dot1s(4) MSTP rather than falling back to nonStp(0) or legacy dot1d1998(1), and compares mstpGenBridgeHelloTime against neighboring switches; a mismatched hello/max-age/forward-delay timer set across the topology would indicate a misconfigured bridge likely to cause topology instability or premature port blocking.

What Can Be Monitored

STP protocol capability/mode (802.1D/RSTP/MSTP)
bridge timer configuration (max age, hello time, forward delay)
max hops and hold/migrate timers
path cost default version
per-instance/per-port BPDU counters

Imported Objects

From BRIDGE-MIB

BridgeId
Timeout
dot1dBridge	MODULE-IDENTITY

From FORCE10-SMI

f10Experiment

OBJECT-IDENTITY

From Q-BRIDGE-MIB

VlanId

From RFC1213-MIB

mib-2

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using mstpXstTopologyChangesCount OID:

Select a Dell Force10 (Dell Networking OS/FTOS) switch (802.1s MSTP/RSTP) 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 mstpXstTopologyChangesCount 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 number of MSTP topology changes detected. 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
f10Mstp	1.3.6.1.4.1.6027.20.2			The MIB module for managing devices that support Multiple & Rapid Spanning Trees Protocol and algorithm. It is dedicated to reflect IEEE Std 802.1s. Note: This contains the MIB objects defined in MSTP-MIB of ruzin-mstp-mib-02.txt.
mstpGen	1.3.6.1.4.1.6027.20.2.10
TIM mstpGenBridgeForwardDelay	1.3.6.1.4.1.6027.20.2.10.4	Timeout	read-write	12.8.1.3.c)
TIM mstpGenBridgeHelloTime	1.3.6.1.4.1.6027.20.2.10.3	Timeout	read-write	12.8.1.3.b)
TIM mstpGenBridgeMaxAge	1.3.6.1.4.1.6027.20.2.10.2	Timeout	read-write	12.8.1.3.a)
INT mstpGenCapable	1.3.6.1.4.1.6027.20.2.10.19	INTEGER	read-only	An indication of wheter the Bridge supports 'maximum' level Spanning Tree Protocol. The value nonStp(0) indicates, the Bridge doesn't support any Spanning Tree Protocol. The value 'dot1d1998(1)' indicates the Spanning Tree Protocol specified in EEE 802.1D-1998, 'dot1w(2)' indicates the Rapid Spanning Tree Protocol specified in IEEE Std 802.1w, 'dot1d2004' indicates IEEE Std 802.1D-2004 and 'dot1s(4) means MSTP IEEE Std 802.1s.
OCT mstpGenCfgIdDigest	1.3.6.1.4.1.6027.20.2.10.33	OCTET STRING	read-only	Configuration Digest.
I32 mstpGenCfgIdFmtSel	1.3.6.1.4.1.6027.20.2.10.30	Integer32	read-write	Configuration Identificator Format Selector.
STR mstpGenCfgIdName	1.3.6.1.4.1.6027.20.2.10.31	DisplayString	read-write	The configuration name that identifies the MST region and is used as one of the inputs in the computation of the MST Configuration Identifier.
I32 mstpGenCfgIdRevLevel	1.3.6.1.4.1.6027.20.2.10.32	Integer32	read-write	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.
I32 mstpGenExternalRootCost	1.3.6.1.4.1.6027.20.2.10.35	Integer32	read-only	... of CIST.
INT mstpGenForceVersion	1.3.6.1.4.1.6027.20.2.10.20	INTEGER	read-write	The value forceNonStp(0) indicates, the Spanning Tree Protocol is disabled on the Bridge (or the Spanning Tree Protocol Emulation operates). Other possible values are described in IEEE Std 802.1s clause 12.8.1.3.e)
TIM mstpGenForwardDelay	1.3.6.1.4.1.6027.20.2.10.10	Timeout	read-only	12.8.1.3.c)
TIM mstpGenHelloTime	1.3.6.1.4.1.6027.20.2.10.9	Timeout	read-only	12.8.1.3.b)
TIM mstpGenHoldTime	1.3.6.1.4.1.6027.20.2.10.15	Timeout	read-write	.
TIM mstpGenMaxAge	1.3.6.1.4.1.6027.20.2.10.8	Timeout	read-only	12.8.1.3.a)
I32 mstpGenMaxHops	1.3.6.1.4.1.6027.20.2.10.14	Integer32	read-write	13.22.f)
TIM mstpGenMigrateTime	1.3.6.1.4.1.6027.20.2.10.16	Timeout	read-write	13.22.d)
INT mstpGenPathCostDefault	1.3.6.1.4.1.6027.20.2.10.18	INTEGER	read-write	(Copied from draft-ietf-bridge-rstpmib-02.txt). The version of the Spanning Tree default Path Costs that are to be used by this Bridge. A value of pathCostDefault8021d1998(1) uses the 16-bit default Path Costs from IEEE Std. 802.1D-1998. A value of pathCostDefault8021t2001(2) uses the 32-bit default Path Costs from IEEE Std. 802.1t.
BRI mstpGenReginalRoot	1.3.6.1.4.1.6027.20.2.10.34	BridgeId	read-only	... of CIST.
mstpMapEntry	1.3.6.1.4.1.6027.20.2.12.1		not-accessible	MST Configuration table (VID=>MSTID translation): allocates each and every possible VLAN to CST or a specific MSTI.
MST mstpMapMSTiID	1.3.6.1.4.1.6027.20.2.12.1.1	MstiInstanceIndex	not-accessible	.
ROW mstpMapRowStatus	1.3.6.1.4.1.6027.20.2.12.1.9	RowStatus	read-create	The status of the row as per SNMP-v2.
mstpMapTable	1.3.6.1.4.1.6027.20.2.12		not-accessible	MST Configuration table (VID=>MSTID translation): allocates each and every possible VLAN to CST or a specific MSTI.
VLA mstpMapVlanMax	1.3.6.1.4.1.6027.20.2.12.1.4	VlanId	read-create	.
VLA mstpMapVlanMin	1.3.6.1.4.1.6027.20.2.12.1.3	VlanId	read-create	.
I32 mstpMapVlanRangeIndex	1.3.6.1.4.1.6027.20.2.12.1.2	Integer32	not-accessible	Signifies the index to the VLAN range entry in the table.
NTF mstpNewRootBridge	1.3.6.1.4.1.6027.20.2.0.1			The mstpNewRootBridge trap indicates that the sending agent has become 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, e.g., upon expiration of the Topology Change Timer immediately subsequent to its election. Implementation of this trap is optional.
NTF mstpNewRootPort	1.3.6.1.4.1.6027.20.2.0.2			The mstpNewRootPort trap indicates that the sending agent has changed the root Port of the Spanning Tree in the CIST or in any MSTI. If the instance has become a root one, the sending value of the parameter mstpXstPortIndex is equal to zero. The trap is sent by a bridge soon after its election as the new root Port, e.g., upon expiration of the Topology Change Timer immediately subsequent to its election. Implementation of this trap is optional.
T/F mstpPortAdminEdge	1.3.6.1.4.1.6027.20.2.11.1.7	TruthValue	read-write	.
I32 mstpPortAdminExternalPathCost	1.3.6.1.4.1.6027.20.2.11.1.5	Integer32	read-write	The administrative value of the External Port Cost parameter. The value 0 means, that Port Cost will be selected automatically in correspondence with the speed of the attached LAN.
T/F mstpPortAdminMACEnable	1.3.6.1.4.1.6027.20.2.11.1.2	TruthValue	read-write	.
T/F mstpPortAdminNonStp	1.3.6.1.4.1.6027.20.2.11.1.13	TruthValue	read-write	Ports with this object set to true(1) do not participate in any STP computation; they are always in Forwarding state, do not send BPDU and all received on these Ports BPDU must be discarded. Such Ports are used to define the STP termination point of the LAN.
INT mstpPortAdminPointToPoint	1.3.6.1.4.1.6027.20.2.11.1.10	INTEGER	read-write	.
T/F mstpPortAutoEdge	1.3.6.1.4.1.6027.20.2.11.1.9	TruthValue	read-write	(From IEEE Std 8021D). Optional.
mstpPortEntry	1.3.6.1.4.1.6027.20.2.11.1		not-accessible	A list of information for each port of the bridge.
TIM mstpPortHelloTime	1.3.6.1.4.1.6027.20.2.11.1.12	Timeout	read-write	.
POR mstpPortIndex	1.3.6.1.4.1.6027.20.2.11.1.1	PortIndex	read-only	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.
T/F mstpPortOperEdge	1.3.6.1.4.1.6027.20.2.11.1.8	TruthValue	read-only	.
I32 mstpPortOperExternalPathCost	1.3.6.1.4.1.6027.20.2.11.1.6	Integer32	read-only	.
T/F mstpPortOperMACEnable	1.3.6.1.4.1.6027.20.2.11.1.3	TruthValue	read-only	.
T/F mstpPortOperPointToPoint	1.3.6.1.4.1.6027.20.2.11.1.11	TruthValue	read-only	.
T/F mstpPortProtocolMigration	1.3.6.1.4.1.6027.20.2.11.1.14	TruthValue	read-write	Reflects 'mcheck' - 'Force BPDU Migration Check' management operation, which is executes, when this object is being set to true(1). The value false(2) in SET operation has to be ignored. The operation GET must always return value false(2).
NUM mstpPortRxCfgBpduCounter	1.3.6.1.4.1.6027.20.2.11.1.16	BpduCounter	read-only	Received Configuration BPDUs (IEEE Std 802.1d-1998).
NUM mstpPortRxMstBpduCounter	1.3.6.1.4.1.6027.20.2.11.1.18	BpduCounter	read-only	Received MST BPDUs IEEE Std 802.1s.
NUM mstpPortRxRstBpduCounter	1.3.6.1.4.1.6027.20.2.11.1.17	BpduCounter	read-only	Received RST BPDUs IEEE Std 802.1w-2001.
NUM mstpPortRxTcnBpduCounter	1.3.6.1.4.1.6027.20.2.11.1.15	BpduCounter	read-only	Received Topology Change Notification (TCN) Messages.
mstpPortTable	1.3.6.1.4.1.6027.20.2.11		not-accessible	A table that contains generic information about every port that is associated with this bridge.
NUM mstpPortTxCfgBpduCounter	1.3.6.1.4.1.6027.20.2.11.1.20	BpduCounter	read-only	Transmitted Configuration BPDUs (IEEE Std 802.1d-1998).
NUM mstpPortTxMstBpduCounter	1.3.6.1.4.1.6027.20.2.11.1.22	BpduCounter	read-only	Transmitted MST BPDUs IEEE Std 802.1s.
NUM mstpPortTxRstBpduCounter	1.3.6.1.4.1.6027.20.2.11.1.21	BpduCounter	read-only	Transmitted RST BPDUs IEEE Std 802.1w-2001.
NUM mstpPortTxTcnBpduCounter	1.3.6.1.4.1.6027.20.2.11.1.19	BpduCounter	read-only	Transmitted Topology Change Notification (TCN) Messages.
TIK mstpPortUpTime	1.3.6.1.4.1.6027.20.2.11.1.4	TimeTicks	read-only	The value of sysUpTime at the time when the Port has been enabled by mstpPortAdminMACEnable or linked last time.
NTF mstpTopologyChange	1.3.6.1.4.1.6027.20.2.0.3			A mstpTopologyChange trap is sent by a bridge when any of its configured ports n any instance (CIST or MSTI) transitions from the Learning state to the Forwarding state, or from the Forwarding state to the Blocking state. The trap is not sent if a mstpNewRootBridge trap is sent for the same transition. Implementation of this trap is optional.
mstpTraps	1.3.6.1.4.1.6027.20.2.0
BRI mstpXstBridgeId	1.3.6.1.4.1.6027.20.2.13.1.3	BridgeId	read-only	.
I32 mstpXstBridgePriority	1.3.6.1.4.1.6027.20.2.13.1.2	Integer32	read-write	Bridge priority, in steps of 4096.
BRI mstpXstDesignatedBridge	1.3.6.1.4.1.6027.20.2.13.1.5	BridgeId	read-only	.
BRI mstpXstDesignatedRoot	1.3.6.1.4.1.6027.20.2.13.1.4	BridgeId	read-only	.
mstpXstEntry	1.3.6.1.4.1.6027.20.2.13.1		not-accessible	.
MST mstpXstId	1.3.6.1.4.1.6027.20.2.13.1.1	MstiOrCistInstanceIndex	read-only	0 means CIST.
I32 mstpXstInternalRootCost	1.3.6.1.4.1.6027.20.2.13.1.6	Integer32	read-only	.
POR mstpXstMasterPort	1.3.6.1.4.1.6027.20.2.13.1.8	PortIndexOrZero	read-only	Non zero value may not be in CIST.
I32 mstpXstPortAdminInternalPathCost	1.3.6.1.4.1.6027.20.2.14.1.16	Integer32	read-write	The value 0 means, that the cost will be selected automatically.
BRI mstpXstPortDesignatedBridge	1.3.6.1.4.1.6027.20.2.14.1.10	BridgeId	read-only	.
POR mstpXstPortDesignatedPort	1.3.6.1.4.1.6027.20.2.14.1.14	PortId	read-only	.
BRI mstpXstPortDesignatedRoot	1.3.6.1.4.1.6027.20.2.14.1.6	BridgeId	read-only	.
mstpXstPortEntry	1.3.6.1.4.1.6027.20.2.14.1		not-accessible	.
I32 mstpXstPortExternalRootCost	1.3.6.1.4.1.6027.20.2.14.1.7	Integer32	read-only	.
POR mstpXstPortIndex	1.3.6.1.4.1.6027.20.2.14.1.2	PortIndex	read-only	The value of mstpPortIndex of the Port in mstpPortTable.
I32 mstpXstPortInternalRootCost	1.3.6.1.4.1.6027.20.2.14.1.9	Integer32	read-only	.
I32 mstpXstPortOperInternalPathCost	1.3.6.1.4.1.6027.20.2.14.1.17	Integer32	read-only	.
I32 mstpXstPortPriority	1.3.6.1.4.1.6027.20.2.14.1.15	Integer32	read-write	Port priority, in steps of 16.
BRI mstpXstPortRegionalBridge	1.3.6.1.4.1.6027.20.2.14.1.8	BridgeId	read-only	.
INT mstpXstPortRole	1.3.6.1.4.1.6027.20.2.14.1.4	INTEGER	read-only	.
INT mstpXstPortState	1.3.6.1.4.1.6027.20.2.14.1.3	INTEGER	read-only	.
mstpXstPortTable	1.3.6.1.4.1.6027.20.2.14		not-accessible	.
MST mstpXstPortXstId	1.3.6.1.4.1.6027.20.2.14.1.1	MstiOrCistInstanceIndex	not-accessible	0 means CIST.
POR mstpXstRootPort	1.3.6.1.4.1.6027.20.2.13.1.7	PortIndexOrZero	read-only	.
mstpXstTable	1.3.6.1.4.1.6027.20.2.13		not-accessible	.
TIK mstpXstTimeSinceTopologyChange	1.3.6.1.4.1.6027.20.2.13.1.11	TimeTicks	read-only	.
T/F mstpXstTopologyChangeFlag	1.3.6.1.4.1.6027.20.2.13.1.13	TruthValue	read-only	.
C32 mstpXstTopologyChangesCountEx	1.3.6.1.4.1.6027.20.2.13.1.12	Counter32	read-only	.

RFC description

Manages Multiple Spanning Tree Protocol (MSTP) configuration per IEEE 802.1s on Force10 devices.

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