EXTREME-STP-EXTENSIONS-MIB

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Organization: Extreme Networks, Inc.

Last Updated: 2000-07-24

Category: Technology: Switching/L2, VLAN and Bridging, Vendor: Extreme Networks

Description: Extreme Networks MIB providing extensions to Spanning Tree Protocol management including MSTP and RSTP tuning on ExtremeXOS.

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What Is EXTREME-STP-EXTENSIONS-MIB?

EXTREME-STP-EXTENSIONS-MIB is an Extreme Networks vendor MIB extending standard Spanning Tree Protocol MIBs with additional configuration and tuning objects for MSTP and RSTP on ExtremeXOS switches. It exposes extended per-bridge/per-port STP parameters beyond what the standard Bridge MIB provides, such as additional timers or protocol-tuning knobs. As a configuration/status MIB its monitoring relevance is in confirming STP topology stability — checking extended port/bridge state to detect a port stuck in a non-forwarding state or unexpected topology changes that could indicate a loop or a misconfigured spanning-tree parameter. It's explicitly built as an extension to the standard Bridge MIB / RSTP-MIB (IEEE 802.1D/802.1w/802.1s) and should be read alongside those standards. It's typically deployed on ExtremeXOS switches running MSTP/RSTP in Layer-2 networks with redundant paths requiring loop prevention. Network engineers evaluating or troubleshooting this functionality can download the EXTREME-STP-EXTENSIONS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in EXTREME-STP-EXTENSIONS-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

Extreme Networks ExtremeXOS-based switch

Monitoring Examples

No sample objects were provided for this module, so specific object names can't be confirmed; based on its description, an admin would typically poll extended per-port STP state and timer objects to confirm a port's forwarding state, and a port unexpectedly stuck in blocking or repeatedly transitioning would indicate STP instability or a misconfigured extension parameter.

What Can Be Monitored

extended STP port state
MSTP/RSTP timer/tuning parameters
topology change indications

Imported Objects

From EXTREME-BASE-MIB

PortList
extremeAgent	OBJECT-IDENTITY

From EXTREME-SYSTEM-MIB

extremeSlotNumber

OBJECT-TYPE

From EXTREME-VLAN-MIB

extremeVlanIfIndex

OBJECT-TYPE

From RFC1213-MIB

DisplayString

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

RowStatus
TruthValue

How to Use in IPNetwork Monitor

Example using extremeStpDomainTopChanges OID:

Select an Extreme Networks ExtremeXOS-based switch (MSTP/RSTP tuning extensions) 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 extremeStpDomainTopChanges 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 topology changes detected by this bridge for this STP domain since the management entity was initialized or reset. 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
extremeStp	1.3.6.1.4.1.1916.1.17			Extreme STP extensions
extremeStpDomainTable	1.3.6.1.4.1.1916.1.17.1		not-accessible	This table contains STP information per STP domain.
extremeStpDomainEntry	1.3.6.1.4.1.1916.1.17.1.1		not-accessible	An entry in the extremeStpDomain Table.
INT extremeStpDomainStpdInstance	1.3.6.1.4.1.1916.1.17.1.1.1	INTEGER	accessible-for-notify	The unique identifier of this STP domain.
STR extremeStpDomainStpdName	1.3.6.1.4.1.1916.1.17.1.1.2	DisplayString	read-only	The name associated with this STP domain.
T/F extremeStpDomainStpEnabled	1.3.6.1.4.1.1916.1.17.1.1.3	TruthValue	read-only	The Enabled/Disabled state of STP on this STP domain.
T/F extremeStpDomainRstpEnabled	1.3.6.1.4.1.1916.1.17.1.1.4	TruthValue	read-only	The Enabled/Disabled state of Rapid STP on this STP domain.
INT extremeStpDomainStpdTag	1.3.6.1.4.1.1916.1.17.1.1.5	INTEGER	read-only	The StpdId of this STP domain which appears as the 802.1Q tag. Therefore, it must be the VLAN tag of one of the wholly-contained VLANs of this STP domain (i.e., the Carrier VLAN). A value of 0 is returned if the STP domain has no Carrier VLAN defined yet or is a completely native 802.1D domain.
INT extremeStpDomainNumPorts	1.3.6.1.4.1.1916.1.17.1.1.6	INTEGER	read-only	The number of physical ports belonging to this STP domain.
BRI extremeStpDomainBridgeId	1.3.6.1.4.1.1916.1.17.1.1.7	BridgeId	read-only	The bridge identifier of this bridge for this STP domain.
INT extremeStpDomainBridgePriority	1.3.6.1.4.1.1916.1.17.1.1.8	INTEGER	read-only	The bridge priority of this bridge for this STP domain.
BRI extremeStpDomainDesignatedRoot	1.3.6.1.4.1.1916.1.17.1.1.9	BridgeId	read-only	The root bridge identifier for this STP domain as determined by the STP running on this bridge for this STP domain
INT extremeStpDomainRootPortIfIndex	1.3.6.1.4.1.1916.1.17.1.1.10	INTEGER	read-only	The port ifIndex of the root port of this bridge for this STP domain.
INT extremeStpDomainRootCost	1.3.6.1.4.1.1916.1.17.1.1.11	INTEGER	read-only	The cost of the path from this bridge to the root bridge of this STP domain
T/F extremeStpDomainRRFailoverEnabled	1.3.6.1.4.1.1916.1.17.1.1.12	TruthValue	read-only	The Enabled/Disabled state of Rapid Root Failover for this bridge on this STP domain.
TIM extremeStpDomainMaxAge	1.3.6.1.4.1.1916.1.17.1.1.13	Timeout	read-only	The maximum allowable age, in units of hundredths of a second, of STP information learned by this bridge for this STP domain, after which it is discarded. This is the value currently being used by the bridge.
TIM extremeStpDomainHelloTime	1.3.6.1.4.1.1916.1.17.1.1.14	Timeout	read-only	The time, in hundredths of a second, between successive transmissions of Configuration BPDUs when this bridge is(or is trying to become) the root bridge for this STP domain. This is the value currently being used by this bridge.
TIM extremeStpDomainForwardDelay	1.3.6.1.4.1.1916.1.17.1.1.15	Timeout	read-only	The forward delay time, in hundredths of a second, currently being used by this bridge on this STP domain.
TIM extremeStpDomainBridgeMaxAge	1.3.6.1.4.1.1916.1.17.1.1.16	Timeout	read-only	This is the value of MaxAge used by all other bridges in this STP domain when this bridge is the root bridge.
TIM extremeStpDomainBridgeHelloTime	1.3.6.1.4.1.1916.1.17.1.1.17	Timeout	read-only	This is the value of HelloTime used by all other bridges in this STP domain when this bridge is the root bridge.
TIM extremeStpDomainBridgeForwardDelay	1.3.6.1.4.1.1916.1.17.1.1.18	Timeout	read-only	This is the value of ForwardDelay used by all other bridges in this STP domain when this bridge is the root bridge.
TIM extremeStpDomainHoldTime	1.3.6.1.4.1.1916.1.17.1.1.19	Timeout	read-only	This is the Hold Time, in hundredths of a second, for this STP domain.
C32 extremeStpDomainTopChangesEx	1.3.6.1.4.1.1916.1.17.1.1.20	Counter32	read-only	The number of topology changes detected by this bridge for this STP domain since the management entity was initialized or reset.
TIK extremeStpDomainTimeSinceTopologyChange	1.3.6.1.4.1.1916.1.17.1.1.21	TimeTicks	read-only	The time, in hundredths of a second, since a topology change was last detected by this bridge for this STP domain.
ROW extremeStpDomainRowStatus	1.3.6.1.4.1.1916.1.17.1.1.22	RowStatus	read-only	The status of this entry, as per standard RowStatus conventions.
extremeStpPortTable	1.3.6.1.4.1.1916.1.17.2		not-accessible	This table contains port-specific information per STP domain.
extremeStpPortEntry	1.3.6.1.4.1.1916.1.17.2.1		not-accessible	An entry in the extremeStpPort table.
INT extremeStpPortPortIfIndex	1.3.6.1.4.1.1916.1.17.2.1.1	INTEGER	not-accessible	The ifIndex of the physical port for which this entry contains STP information.
T/F extremeStpPortStpEnabled	1.3.6.1.4.1.1916.1.17.2.1.2	TruthValue	read-only	The enabled/disabled state of this STP instance on this port.
INT extremeStpPortPortMode	1.3.6.1.4.1.1916.1.17.2.1.3	INTEGER	read-only	The port mode of this port in this STP domain.
INT extremeStpPortPortState	1.3.6.1.4.1.1916.1.17.2.1.4	INTEGER	read-only	The port state of this port in this STP domain.
INT extremeStpPortPortPriority	1.3.6.1.4.1.1916.1.17.2.1.5	INTEGER	read-only	The port priority of this port in this STP domain.
OCT extremeStpPortPortId	1.3.6.1.4.1.1916.1.17.2.1.6	OCTET STRING	read-only	The port identifier of this port in this STP domain.
INT extremeStpPortPathCost	1.3.6.1.4.1.1916.1.17.2.1.7	INTEGER	read-only	The path cost of this port for this STP domain.
INT extremeStpPortDesignatedCost	1.3.6.1.4.1.1916.1.17.2.1.8	INTEGER	read-only	The path cost, for this STP domain, of the Designated Port of the segment connected to this port.
BRI extremeStpPortDesignatedRoot	1.3.6.1.4.1.1916.1.17.2.1.9	BridgeId	read-only	The root bridge identifier, for this STP domain, that is sent in the Configuration BPDUs transmitted by the Designated Bridge for the segment to which this port is attached.
BRI extremeStpPortDesignatedBridge	1.3.6.1.4.1.1916.1.17.2.1.10	BridgeId	read-only	The bridge identifier for the bridge considered to be the Designated Bridge, in this STP domain, for the segment connected to this port.
OCT extremeStpPortDesignatedPort	1.3.6.1.4.1.1916.1.17.2.1.11	OCTET STRING	read-only	The port identifier of the Designated Port on this port's segment, for this STP domain.
ROW extremeStpPortRowStatus	1.3.6.1.4.1.1916.1.17.2.1.12	RowStatus	read-only	The status of this entry, as per standard RowStatus conventions.
extremeStpVlanPortTable	1.3.6.1.4.1.1916.1.17.3		not-accessible	This table contains information of the ports belonging to a STP domain on a per VLAN basis.
extremeStpVlanPortEntry	1.3.6.1.4.1.1916.1.17.3.1		not-accessible	An entry in the extremeStpVlanPort table.
POR extremeStpVlanPortPortMask	1.3.6.1.4.1.1916.1.17.3.1.1	PortList	read-only	The list of ports in this STP domain and in this VLAN.
ROW extremeStpVlanPortRowStatus	1.3.6.1.4.1.1916.1.17.3.1.2	RowStatus	read-only	The status of this entry, as per standard RowStatus conventions.
extremeStpTraps	1.3.6.1.4.1.1916.1.17.4
extremeStpTrapsPrefix	1.3.6.1.4.1.1916.1.17.4.0
NTF extremeStpEdgePortBlocked	1.3.6.1.4.1.1916.1.17.4.0.1			The extremeStpEdgePortBlocked notification is generated when the STP's edge port is Blocked due to the misconfiguration

RFC description

Extreme Networks STP extensions MIB for managing spanning tree protocol configuration and topology information.

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Download EXTREME-STP-EXTENSIONS-MIB