Technical Documentation

jnxMIDot1sJuniperMstTable

The jnxMIDot1sJuniperMstTable provides MSTP module parameters for a given virtual context. Table 1 lists the objects in the jnxMIDot1sJuniperMstTable.

Table 1: jnxMIDot1sJuniperMstTable

Object

Object Identifier

Description

jnxMIDot1sJuniperMstContextId

jnxMIDot1sJuniperMstEntry 1

Identifies the virtual context.

jnxMIMstSystemControl

jnxMIDot1sJuniperMstEntry 2

Indicates the status of MST on the ports of the device. The value start (1) indicates that MIMST is active on all ports of the device; the value shutdown (2) indicates that MIMST is shut down on all ports of the device.

jnxMIMstModuleStatus

jnxMIDot1sJuniperMstEntry 3

Indicates whether MST is enabled or disabled on the ports. When set to value 1, enabled, MST is enabled on all ports of the device; when set to value 2, disabled, MIMST is disabled on all ports.

Note: The object can be set to enabled(1) only when jnxMIMstSystemControl is set to start.

jnxMIMstMaxMstInstanceNumber

jnxMIDot1sJuniperMstEntry 4

Indicates the maximum number of spanning-tree instances allowed on the bridge.

jnxMIMstNoOfMstiSupported

jnxMIDot1sJuniperMstEntry 5

Indicates the maximum number of spanning-tree instances that can be supported on the bridge.

jnxMIMstMaxHopCount

jnxMIDot1sJuniperMstEntry 6

Returns the Maximum Hop Count value.

jnxMIMstBrgAddress

jnxMIDot1sJuniperMstEntry 7

Indicates the MAC address used by the bridge, which forms a unique bridge identifier when combined with jnxMIMstCistBridgePriority or jnxMIMstMstiBridgePriority.

jnxMIMstCistRoot

jnxMIDot1sJuniperMstEntry 8

Indicates the bridge identifier of the root of the common spanning-tree as determined by the Spanning Tree Protocol. This value is used as the common and internal spanning tree (CIST) Root Identifier parameter in all configuration bridge PDUs originating at this node.

jnxMIMstCistRegionalRoot

jnxMIDot1sJuniperMstEntry 9

Indicates the bridge identifier of the root of the multiple spanning-tree region as determined by the Spanning Tree Protocol. This value is used as the CIST Regional Root Identifier parameter in all configuration bridge PDUs originating at this node.

jnxMIMstCistRootCost

jnxMIDot1sJuniperMstEntry 10

Indicates the cost of the path to the CIST root from this bridge.

jnxMIMstCistRegionalRootCost

jnxMIDot1sJuniperMstEntry 11

Indicates the cost of the path to the CIST regional root from this bridge.

jnxMIMstCistRootPort

jnxMIDot1sJuniperMstEntry 12

Indicates the port number of the port that offers the lowest path cost from this bridge to the CIST Root Bridge.

jnxMIMstCistBridgePriority

jnxMIDot1sJuniperMstEntry 13

Indicates the value of the writable portion of the bridge identifier. The values set for Bridge Priority must be in multiples of 4096.

jnxMIMstCistBridgeMaxAge

jnxMIDot1sJuniperMstEntry 14s

Indicates the value that a bridge uses for MaxAge when the bridge is acting as the root.

jnxMIMstCistBridgeForwardDelay

jnxMIDot1sJuniperMstEntry 15

Indicates the value that the bridge uses for ForwardDelay when this bridge is acting as the root. Note that 802.1D specifies that the range for this parameter is related to the value of BridgeMaxAge.

jnxMIMstCistHoldTime

jnxMIDot1sJuniperMstEntry 16

Sets the interval between transmitting two configuration bridge PDUs.

jnxMIMstCistMaxAge

jnxMIDot1sJuniperMstEntry 17

Sets the maximum age of Spanning Tree Protocol (STP) information learned on the ports. The STP information is discarded when the age exceeds the set limit.

jnxMIMstCistForwardDelay

jnxMIDot1sJuniperMstEntry 18

Indicates the time period during which a port stays in a particular state before moving to the next state; for example, from spanning to forwarding state.

jnxMIMstMstpUpCount

jnxMIDot1sJuniperMstEntry 19

Shows the number of times the MSTP Module has been enabled on the bridge.

jnxMIMstMstpDownCount

jnxMIDot1sJuniperMstEntry 20

Shows the number of times the MSTP Module has been disabled on the bridge.

jnxMIMstPathCostDefaultType

jnxMIDot1sJuniperMstEntry 21

Shows the version of the spanning-tree default path costs that are to be used by the bridge.

  • A value of 8021d1998(1) uses the 16-bit default path costs from IEEE Std. 802.1D-1998.
  • A value of stp8021t2001(2) uses the 32-bit default path costs from IEEE Std. 802.1t.

jnxMIMstDebug

jnxMIDot1sJuniperMstEntry 23

Enables debug statements in the MSTP module. A 4-byte integer can be used to set the level of debugging.

The bit position maps to the following levels of debugging:

  • 0: Init and shutdown debug statements
  • 1: Management debug statements
  • 2: Memory-related debug statements
  • 3: BPDU-related debug statements
  • 4: Event handling debug statements
  • 5: Time module debug statements
  • 6: Port information SEM debug statements
  • 7: Port receive SEM debug statements (valid in the case of MSTP alone)
  • 8: Role selection SEM debug statements
  • 9: Role transition SEM debug statements
  • 10: State transition SEM debug statements
  • 11: Protocol migration SEM debug statements
  • 12: Topology change SEM debug statements
  • 13: Port transmit SEM debug statements
  • 14: Bridge detection SEM debug statements
  • 15: All failure debug statements
  • 16: Redundancy code flow debug statements

The rest of the bits remain unused. You can use a combination of debug levels to generate debug statements of multiple debug levels.

Note: Debug options and trace options are mutually exclusive. When the debug option is set, the trace option is set to 0.

jnxMIMstForceProtocolVersion

jnxMIDot1sJuniperMstEntry 24

Indicates the version of the Spanning Tree Protocol that is running on the bridge.

  • stpCompatible(0): Represents Spanning Tree Protocol specified in IEEE 802.1D.
  • rstp(2): Represents the Rapid Spanning Tree protocol specified in IEEE 802.1w.
  • mstp(3): Represents the Multiple Spanning Tree protocol specified in IEEE 802.1s.

jnxMIMstTxHoldCount

jnxMIDot1sJuniperMstEntry 25

Indicates the value that the port transmit state machine uses to limit the maximum transmission rate.

jnxMIMstMstiConfigIdSel

jnxMIDot1sJuniperMstEntry 26

Indicates the Configuration Identifier Format Selector that the bridge uses.

jnxMIMstMstiRegionName

jnxMIDot1sJuniperMstEntry 27

Indicates the name of the region's configuration. By default, the region name and the MAC address of the bridge are the same.

jnxMIMstMstiRegionVersion

jnxMIDot1sJuniperMstEntry 28

Indicates the version of the multiple spanning-tree region.

jnxMIMstMstiConfigDigest

jnxMIDot1sJuniperMstEntry 29

Indicates the configuration digest value for the multiple spanning-tree region.

jnxMIMstBufferOverFlowCount

jnxMIDot1sJuniperMstEntry 30

Indicates the number of times buffer overflows or failures have occurred. This event generates a trap.

jnxMIMstMemAllocFailureCount

jnxMIDot1sJuniperMstEntry 31

Indicates the number of times memory allocation failures have occurred. This event generates a trap.

jnxMIMstRegionConfigChangeCount

jnxMIDot1sJuniperMstEntry 32

Indicates the number of times a Region Configuration Identifier Change was detected. This event generates a trap.

jnxMIMstCistBridgeRoleSelectionSemState

jnxMIDot1sJuniperMstEntry 33

Indicates the current state of the Port Role Selection State Machine of the bridge in a common spanning-tree context

jnxMIMstCistTimeSinceTopologyChange

jnxMIDot1sJuniperMstEntry 34

Indicates the time since the TcWhile Timer for any port of the Bridge was nonzero for the common spanning-tree context.

jnxMIMstCistTopChanges

jnxMIDot1sJuniperMstEntry 35

Indicates the number of times when there was at least one nonzero TcWhile Timer on the bridge for the common spanning-tree context.

jnxMIMstCistNewRootBridgeCount

jnxMIDot1sJuniperMstEntry 36

Indicates how many times the bridge has detected a root bridge change for a common-spanning-tree context. This event generates a trap.

jnxMIMstCistHelloTime

jnxMIDot1sJuniperMstEntry 37

Specifies the interval between the transmission of configuration BPDUs by this node on any port when it is either the root of the spanning-tree or trying to become the root.

jnxMIMstCistBridgeHelloTime

jnxMIDot1sJuniperMstEntry 38

Specifies the interval between the transmission of configuration bridge PDUs by this node.

jnxMIMstCistDynamicPathcostCalculation

jnxMIDot1sJuniperMstEntry 39

Indicates whether the dynamic path cost calculation is allowed. If set to true, path cost is calculated dynamically from the port speed; otherwise the link speed at the time of port creation is used for calculating the path cost. In both cases, the user has configured a path cost for the port that is used. By default, dynamic path cost calculation is set to false.


Published: 2010-04-27