ELTEX-MES-BRIDGE-STP-MULTIPROCESS-MIB

All MIBs › ELTEX-MES-BRIDGE-STP-MULTIPROCESS-MIB

Organization: Eltex Ltd.

Last Updated: 2013-10-25

Category: Technology: Bridging, Vendor: Eltex

Description: Eltex MES multi-process STP MIB for managing multiple concurrent spanning tree instances on the MES switching platform.

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What Is ELTEX-MES-BRIDGE-STP-MULTIPROCESS-MIB?

ELTEX-MES-BRIDGE-STP-MULTIPROCESS-MIB is a private Eltex extension for MES series switches that manages multiple concurrent Spanning Tree Protocol (STP/MSTP) instances running as separate 'processes' on the same switch. It exposes a table of per-instance bridge parameters including timers, priority, protocol version, and topology-change history. This is squarely a Layer-2 fault/topology monitoring MIB: it lets an administrator detect STP topology instability (via topology-change counts and time-since-last-change) and confirm each spanning-tree instance's designated root and cost, which are key software-state health indicators for a switched network. It clearly extends the standard IETF Bridge/STP MIBs (dot1dStp, IEEE 802.1s MSTP) to support multiple simultaneous instances beyond what those standards natively provide per device. It is deployed on Eltex MES switches used in Layer-2 networks requiring multiple independent spanning-tree domains, such as multi-tenant or VLAN-segmented environments, and administrators can download the ELTEX-MES-BRIDGE-STP-MULTIPROCESS-MIB file to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ELTEX-MES-BRIDGE-STP-MULTIPROCESS-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

Eltex MES series switch

Monitoring Examples

An administrator would poll eltdot1dStpMultiProcessTable, indexed by eltdot1dStpMultiProcessId, to check eltdot1dStpMultiProcessTopChanges and eltdot1dStpMultiProcessTimeSinceTopologyChange for each spanning-tree instance, where a rapidly increasing topology-change count signals a flapping link or loop in that VLAN group. Fields like eltdot1dStpMultiProcessDesignatedRoot and eltdot1dStpMultiProcessRootCost let an operator confirm the expected root bridge is in place for each process, while eltdot1dStpMultiProcessBridgeMaxAge, eltdot1dStpMultiProcessBridgeHelloTime, and eltdot1dStpMultiProcessBridgeForwardDelay confirm the configured STP timers match design intent for that instance.

What Can Be Monitored

per-instance STP topology change count
time since last topology change
designated root and root cost per STP instance
STP timers (max age, hello time, forward delay) per instance

Imported Objects

From BRIDGE-MIB

BridgeId
Timeout
dot1dBasePort	OBJECT-TYPE

From ELTEX-MES-BRIDGE-EXT-MIB

eltMesBridgeExtMIBObjects

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex
ifIndex	OBJECT-TYPE

From Q-BRIDGE-MIB

PortList
VlanIdOrNone

From RFC1155-SMI

Counter

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

MacAddress
RowStatus
TruthValue

How to Use in IPNetwork Monitor

Example using eltdot1dStpMultiProcessTopChanges OID:

Select an Eltex MES-series Ethernet switch (multi-instance STP/MSTP) 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 eltdot1dStpMultiProcessTopChanges 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 this bridge since the management entity was last reset or initialized. 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
eltMesStpMultiProcessMIB	1.3.6.1.4.1.35265.1.23.1.401.0.2			The MIB module for managing STP multiprocess extension.
eltMesDot1dStpMultiProcess	1.3.6.1.4.1.35265.1.23.1.401.0.2.1
eltdot1dStpMultiProcessTable	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1		not-accessible	A table that contains per-process Stp specific information for the Spanning Tree Protocol.
eltdot1dStpMultiProcessEntry	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1		not-accessible	A list of information maintained by every instance about the multiple Spanning Tree Protocol state for that instance.
INT eltdot1dStpMultiProcessId	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.1	INTEGER	read-only	The Process index.
INT eltdot1dStpMultiProcessPriority	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.2	INTEGER	read-write	The value of the write-able portion of the Bridge ID, i.e., the first two octets of the (8 octet long) Bridge ID. The other (last) 6 octets of the Bridge ID are given by the value of dot1dBaseBridgeAddress.
TIM eltdot1dStpMultiProcessBridgeMaxAge	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.3	Timeout	read-write	The value that all bridges use for MaxAge when this bridge is acting as the root. Note that 802.1D-1990 specifies that the range for this parameter is related to the value of eltdot1dStpMultiProcessBridgeHelloTime. The granularity of this timer is specified by 802.1D-1990 to be 1 second. An agent may return a badValue error if a set is attempted to a value which is not a whole number of seconds.
TIM eltdot1dStpMultiProcessBridgeHelloTime	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.4	Timeout	read-write	The value that all bridges use for HelloTime when this bridge is acting as the root. The granularity of this timer is specified by 802.1D- 1990 to be 1 second. An agent may return a badValue error if a set is attempted to a value which is not a whole number of seconds.
TIM eltdot1dStpMultiProcessBridgeForwardDelay	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.5	Timeout	read-write	The value that all bridges use for ForwardDelay when this bridge is acting as the root. Note that 802.1D-1990 specifies that the range for this parameter is related to the value of eltdot1dStpMultiProcessBridgeMaxAge. The granularity of this timer is specified by 802.1D-1990 to be 1 second. An agent may return a badValue error if a set is attempted to a value which is not a whole number of seconds.
INT eltdot1dStpMultiProcessVersion	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.6	INTEGER	read-write	The version of Spanning Tree Protocol the bridge is currently running. The value 'stpCompatible(0)' indicates the Spanning Tree Protocol specified in IEEE 802.1D and 'rstp(2)' indicates the Rapid Spanning Tree Protocol specified in IEEE 802.1w. New value may be defined as future versions of the protocol become available.
TIK eltdot1dStpMultiProcessTimeSinceTopologyChange	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.7	TimeTicks	read-only	The time (in hundredths of a second) since the last time a topology change was detected by the bridge entity.
CTR eltdot1dStpMultiProcessTopChangesEx	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.8	Counter	read-only	The total number of topology changes detected by this bridge since the management entity was last reset or initialized.
BRI eltdot1dStpMultiProcessDesignatedRoot	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.9	BridgeId	read-only	The 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 eltdot1dStpMultiProcessRootCost	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.10	INTEGER	read-only	The cost of the path to the root as seen from this bridge.
INT eltdot1dStpMultiProcessRootPort	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.11	INTEGER	read-only	The port number of the port which offers the lowest cost path from this bridge to the root bridge.
TIM eltdot1dStpMultiProcessMaxAge	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.12	Timeout	read-only	The 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 eltdot1dStpMultiProcessHelloTime	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.13	Timeout	read-only	The 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 eltdot1dStpMultiProcessHoldTime	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.14	INTEGER	read-only	This 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 eltdot1dStpMultiProcessForwardDelay	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.15	Timeout	read-only	This 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 eltdot1dStpMultiProcessBridgeForwardDelay which is the value that this bridge and all others would start using if/when this bridge were to become the root.]
ROW eltdot1dStpMultiProcessRowStatus	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.16	RowStatus	read-only	Process entry row status.
INT eltdot1dStpMultiProcessLastTopologyChangePort	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.1.1.17	INTEGER	read-only	This value contains port's ifIndex from which the request about the last change of topology came. If value is 0 - topology wasn't changed yet.
eltdot1dStpMultiProcessPortTable	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2		not-accessible	A table that contains extended pair port specific information.
eltdot1dStpMultiProcessPortEntry	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1		not-accessible	A list of information maintained by every port about the Spanning Tree Protocol state for that port.
INT eltdot1dStpMultiProcessPortPort	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.1	INTEGER	read-only	The port number of the port for which this entry contains Spanning Tree Protocol management information.
INT eltdot1dStpMultiProcessPortProcessId	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.2	INTEGER	read-write	Native process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId1	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.3	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId2	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.4	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId3	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.5	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId4	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.6	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId5	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.7	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId6	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.8	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId7	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.9	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId8	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.10	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId9	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.11	INTEGER	read-write	Shared process the port belongs to.
INT eltdot1dStpMultiProcessPortSharedProcessId10	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.2.1.12	INTEGER	read-write	Shared process the port belongs to.
eltdot1dStpMultiProcessPortListTable	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.3		not-accessible	A table that contains per-process port lists.
eltdot1dStpMultiProcessPortListEntry	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.3.1		not-accessible	Entry.
INT eltdot1dStpMultiProcessPortListProcessId	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.3.1.1	INTEGER	read-only	The Process index.
POR eltdot1dStpMultiProcessPortList	1.3.6.1.4.1.35265.1.23.1.401.0.2.1.3.1.2	PortList	read-only	The list of ports that belong to this process.
eltMesDot1sMstpMultiProcess	1.3.6.1.4.1.35265.1.23.1.401.0.2.2
eltdot1sMstpMultiProcessInstanceTable	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1		not-accessible	A table that contains per-process Mstp instance specific information for the Multiple Spanning Tree Protocol.
eltdot1sMstpMultiProcessInstanceEntry	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1		not-accessible	A list of information maintained by every instance about the multiple Spanning Tree Protocol state for that instance.
INT eltdot1sMstpMultiProcessInstanceProcessId	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.1	INTEGER	read-only	The Process index.
INT eltdot1sMstpMultiProcessInstanceId	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.2	INTEGER	read-only	The Instance index.
T/F eltdot1sMstpMultiProcessInstanceEnable	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.3	TruthValue	read-only	Specifies whether this Instance is STP enable or disable
TIK eltdot1sMstpMultiProcessInstanceTimeSinceTopologyChange	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.4	TimeTicks	read-only	The time (in hundredths of a second) since the last time a topology change was detected by the Mstp Instance .
CTR eltdot1sMstpMultiProcessInstanceTopChanges	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.5	Counter	read-only	The total number of topology changes detected by this Instance since the management entity was last reset or initialized.
BRI eltdot1sMstpMultiProcessInstanceDesignatedRoot	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.6	BridgeId	read-only	The 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 eltdot1sMstpMultiProcessInstanceRootCost	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.7	INTEGER	read-only	The cost of the path to the root as seen from this bridge.
INT eltdot1sMstpMultiProcessInstanceRootPort	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.8	INTEGER	read-only	The port number of the port which offers the lowest cost path from this bridge to the root bridge.
TIM eltdot1sMstpMultiProcessInstanceMaxAge	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.9	Timeout	read-only	The 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 eltdot1sMstpMultiProcessInstanceHelloTime	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.10	Timeout	read-only	The 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 eltdot1sMstpMultiProcessInstanceHoldTime	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.11	INTEGER	read-only	This 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 eltdot1sMstpMultiProcessInstanceForwardDelay	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.12	Timeout	read-only	This 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 eltdot1dStpMultiProcessBridgeForwardDelay which is the value that this bridge and all others would start using if/when this bridge were to become the root.]
INT eltdot1sMstpMultiProcessInstancePriority	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.13	INTEGER	read-write	The 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 eltdot1sMstpMultiProcessInstanceRemainingHopes	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.14	INTEGER	read-only	This count value determines the amount of hopes the information transmited by this bridge on this instance can travel.
INT eltdot1sMstpMultiProcessInstanceLastTopologyChangePort	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.1.1.15	INTEGER	read-only	This value contains port's ifIndex from which the request about the last change of topology came. If value is 0 - topology wasn't changed yet.
eltdot1sMstpMultiProcessTable	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.2		not-accessible	A table that contains per-process information for the Multiple Spanning Tree Protocol.
eltdot1sMstpMultiProcessEntry	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.2.1		not-accessible	A list of information maintained by every process about the multiple Spanning Tree Protocol state for that process.
INT eltdot1sMstpMultiProcessId	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.2.1.1	INTEGER	read-only	The Process index.
INT eltdot1sMstpMultiProcessMaxHopes	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.2.1.2	INTEGER	read-write	Max number of hopes that an MST BPDU will travel inside a region.
INT eltdot1sMstpMultiProcessDesignatedMaxHopes	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.2.1.3	INTEGER	read-only	Max number of hopes that an MST BPDU will travel inside a region.
BRI eltdot1sMstpMultiProcessRegionalRoot	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.2.1.4	BridgeId	read-only	CIST Regional Root Identifier (13.16.4). The Bridge Identifier of the current CIST Regional Root.
INT eltdot1sMstpMultiProcessRegionalRootCost	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.2.1.5	INTEGER	read-only	The CIST path cost from the transmitting Bridge to the CIST Regional Root.
INT eltdot1sMstpMultiProcessRemainingHops	1.3.6.1.4.1.35265.1.23.1.401.0.2.2.2.1.6	INTEGER	read-only	This count value determines the amount of hops the information transmitted by this bridge can travel.

RFC description

Extension for managing Spanning Tree Protocol multiprocess configurations on Eltex switches.

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