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snIfStpTable
brcdIp.1.1.3.5.2
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None
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A specific snIfStpTable consists of a number of switch ports. This table exists only
if snVLanByPortCfgTable exists and snVLanByPortCfgStpMode is enabled for each VLAN.
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snIfStpVLanId
brcdIp.1.1.3.5.2.1.1 Syntax: Integer
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Read-only
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Shows the VLAN ID of the VLAN switch community.
Valid values: 1 - 65535
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snIfStpPortNum
brcdIp.1.1.3.5.2.1.2 Syntax: InterfaceIndex
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Read-only
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Shows the port number of the switch that has the ifIndex value.
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snIfStpPortPriority
brcdIp.1.1.3.5.2.1.3 Syntax: Integer
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Read-write
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Shows the value of the priority field, which is contained in the first (in network
byte order) octet of the (2 octet long) Port ID. The second octet of the Port ID is
given by the value of dot1dStpPort. The two octets combine to form the identity of
the root bridge in a spanning tree (instance of STP). The bridge with the lowest value
has the highest priority and is the root.
Valid values: 0 - 255
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snIfStpCfgPathCost
brcdIp.1.1.3.5.2.1.4 Syntax: Integer
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Read-write
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Shows the value of the dot1dStpPortPathCost, which is the port’s path cost of paths
towards the spanning tree root which include this port. 802.1D-1990 recommends that
the default value of this parameter be in inverse proportion to the speed of the attached
LAN. Writing value zero to this object sets the path cost to a default value which
automatically changes according to port speed.
Valid values: 0 - 200000000
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snIfStpOperState
brcdIp.1.1.3.5.2.1.5 Syntax: Integer
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Read-only
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Indicates if the port STP entry is activated and is in running mode:
- notActivated(0)
- activated(1)
Default: notActivated(0)
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snIfStpPortState
brcdIp.1.1.3.5.2.1.8 Syntax: Integer
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Read-only
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Shows the port’s current state as defined by application of the Spanning Tree Protocol.
This state controls what action a port takes when it receives a frame:
- disabled(1) - The port is not participating in STP. This can occur when the port is
disconnected or STP is disabled on the port.
- blocking(2) - STP has blocked Layer 2 traffic on this port to prevent a loop. The
device or VLAN can reach the root bridge using another port with the forwarding(5)
state. When a port is in this state, the port does not transmit or receive user frames,
but the port does continue to receive STP BPDUs.
- listening(3) - STP is responding to a topology change and this port is listening for
a BPDU from neighboring bridges in order to determine the new topology. No user frames
are transmitted or received during this state.
- learning(4) - The port has passed the listening state and will change to the blocking
or forwarding state, depending on the results of STP’s reconvergence. The port does
not transmit or receive user frames during this state. However, the device can learn
the MAC addresses of frames that the port receives during this state and make corresponding
entries in the MAC table.
- forwarding(5) - STP is allowing the port to send and receive frames.
- broken(6) - Ports that are malfunctioning are placed into this state by the bridge.
- preforwarding(7)
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snIfStpPortDesignatedCost
brcdIp.1.1.3.5.2.1.9 Syntax: Integer32
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Read-only
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The cost to the root bridge as advertised by the designated bridge that is connected
to this port. This value is compared to the Root Path Cost field in received bridge
PDUs.
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snIfStpPortDesignatedRoot
brcdIp.1.1.3.5.2.1.10 Syntax: BridgeId
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Read-only
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Shows the unique ID of the root bridge. The root bridge is recorded as the root in
the configuration BPDUs, which are transmitted by the designated bridge for the segment
to which the port is attached.
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snIfStpPortDesignatedBridge
brcdIp.1.1.3.5.2.1.11 Syntax: BridgeId
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Read-only
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Shows the ID of the designated bridge. The designated bridge is the device that connects
the network segment to the root bridge.
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snIfStpPortDesignatedPort
brcdIp.1.1.3.5.2.1.12 Syntax: Octet String
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Read-only
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Shows the ID of the port on the designated bridge that connects to the root bridge
on the network.
This object has two octets.
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snIfStpPortAdminRstp
brcdIp.1.1.3.5.2.1.13 Syntax: TruthVal
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Read-write
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Enables or disables RSTP of a port which is a member of a VLAN. If the VLAN is not
operating in RSTP, this object will return FALSE(2) and this object is not writable.
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snIfStpPortProtocolMigration
brcdIp.1.1.3.5.2.1.14 Syntax: TruthVal
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Read-write
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When operating in RSTP (version 2) mode, writing TRUE(1) to this object forces this
port to transmit RSTP BPDUs. Any other operation on this object has no effect and
it always returns FALSE(2) when read.
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snIfStpPortAdminEdgePort
brcdIp.1.1.3.5.2.1.15 Syntax: TruthVal
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Read-write
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The administrative value of the edge port parameter. A value of TRUE(1) indicates
that this port should be assumed as an edge port and a value of FALSE(2) indicates
that this port should be assumed as a non-edge port.
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snIfStpPortAdminPointToPoint
brcdIp.1.1.3.5.2.1.16 Syntax: TruthVal
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Read-write
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The administrative point-to-point status of the LAN segment attached to this port.
A value of TRUE(1) indicates that this port should always be treated as if it is connected
to a point-to-point link. A value of FALSE(2) indicates that this port should be
treated as having a shared media connection.
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snIfStpOperPathCost
brcdIp.1.1.3.5.2.1.17 Syntax: Integer
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Read-only
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Shows the value of dot1dStpPortPathCost, which is the port’s path cost of paths towards
the spanning tree root which include this port. 802.1D-1990 recommends that the default
value of this parameter be in inverse proportion to the speed of the attached LAN.
Reading value zero indicates an unknown path cost value because the port speed cannot
be determined due to the speed auto sense in progress or the port link is down.
Valid values: 0 - 200000000.
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snIfStpPortRole
brcdIp.1.1.3.5.2.1.18 Syntax: Integer
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Read-only
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The STP or RSTP port role:
- unknown(0)
- alternate(1)
- root(2)
- designated(3)
- backupRole(4)
- disabledRole(5)
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snIfStpBPDUTransmitted
brcdIp.1.1.3.5.2.1.19 Syntax: Counter32
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Read-only
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The STP or RSTP bridge protocol unit transmitted counter.
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snIfStpBPDUReceived
brcdIp.1.1.3.5.2.1.20 Syntax: Counter32
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Read-only
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The STP or RSTP bridge protocol unit received counter.
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snIfRstpConfigBPDUReceived
brcdIp.1.1.3.5.2.1.21 Syntax: Counter32
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Read-only
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The RSTP configuration bridge protocol unit received counter.
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snIfRstpTCNBPDUReceived
brcdIp.1.1.3.5.2.1.22 Syntax: Counter32
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Read-only
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The RSTP topology change notification bridge protocol unit received counter.
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snIfRstpConfigBPDUTransmitted
brcdIp.1.1.3.5.2.1.23 Syntax: Counter32
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Read-only
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The RSTP configuration bridge protocol unit transmitted counter.
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snIfRstpTCNBPDUTransmitted
brcdIp.1.1.3.5.2.1.24 Syntax: Counter32
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Read-only
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The RSTP topology change notification bridge protocol unit transmitted counter.
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