-- Network Working Group E. Decker
-- Request for Comments: 1286 cisco Systems, Inc.
-- P. Langille
-- Digital Equipment Corporation
-- A. Rijsinghani
-- Digital Equipment Corporation
-- K. McCloghrie
-- Hughes LAN Systems, Inc.
-- December 1991RFC1286-MIB DEFINITIONS::=BEGINIMPORTSCounter,Gauge,TimeTicksFROM RFC1155-SMI
mib-2
FROM RFC1213-MIB
OBJECT-TYPEFROM RFC-1212
TRAP-TYPEFROM RFC-1215;-- All representations of MAC addresses in this MIB Module use,
-- as a textual convention (i.e. this convention does not affect-- their encoding), the data type:MacAddress::=OCTETSTRING(SIZE(6))-- a 6 octet address in-- the "canonical" order-- defined by IEEE 802.1a, i.e., as if it were transmitted least-- significant bit first, even though 802.5 (in contrast to other-- 802.x protocols) requires MAC addresses to be transmitted most-- significant bit first.---- 16-bit addresses, if needed, are represented by setting their-- upper 4 octets to all 0's, i.e., AAFF would be represented-- as 00000000AAFF.
-- Similarly, all representations of Bridge-Id in this MIB Module-- use, as a textual convention (i.e. this convention does not affect-- their encoding), the data type:BridgeId::=OCTETSTRING(SIZE(8))-- the Bridge-Identifier as-- used in the Spanning Tree-- Protocol to uniquely identify a bridge. Its first two octets-- (in network byte order) contain a priority value and its last-- 6 octets contain the MAC address used to refer to a bridge in a-- unique fashion (typically, the numerically smallest MAC address-- of all ports on the bridge).-- Several objects in this MIB module represent values of timers
-- used by the Spanning Tree Protocol. In this MIB, these timers-- have values in units of hundreths of a second (i.e. 1/100 secs).-- These timers, when stored in a Spanning Tree Protocol's BPDU,-- are in units of 1/256 seconds. Note, however, that 802.1d/D9-- specifies a settable granularity of no more than 1 second for-- these timers. To avoid ambiguity, a data type is defined here-- as a textual convention and all representation of these timers-- in this MIB module are defined using this data type. An algorithm-- is also defined for converting between the different units, to-- ensure a timer's value is not distorted by multiple conversions.-- The data type is:Timeout::=INTEGER-- a STP timer in units of 1/100 seconds
-- To convert a Timeout value into a value in units of-- 1/256 seconds, the following algorithm should be used:---- b = floor( (n * 256) / 100)---- where:-- floor = quotient [ignore remainder]-- n is the value in 1/100 second units-- b is the value in 1/256 second units---- To convert the value from 1/256 second units back to-- 1/100 seconds, the following algorithm should be used:---- n = ceiling( (b * 100) / 256)---- where:-- ceiling = quotient [if remainder is 0], or-- quotient + 1 [if remainder is non-zero]-- n is the value in 1/100 second units
-- b is the value in 1/256 second units---- Note: it is important that the arithmetic operations are done-- in the order specified (i.e., multiply first, divide second).dot1dBridge OBJECTIDENTIFIER::={ mib-2 17}-- groups in the Bridge MIBdot1dBase OBJECTIDENTIFIER::={ dot1dBridge 1}dot1dStp OBJECTIDENTIFIER::={ dot1dBridge 2}dot1dSr OBJECTIDENTIFIER::={ dot1dBridge 3}
dot1dTp OBJECTIDENTIFIER::={ dot1dBridge 4}dot1dStatic OBJECTIDENTIFIER::={ dot1dBridge 5}-- the dot1dBase group-- Implementation of the dot1dBase group is mandatory for all-- bridges.dot1dBaseBridgeAddress OBJECT-TYPESYNTAXMacAddressACCESSread-onlySTATUSmandatoryDESCRIPTION"The MAC address used by this bridge when it must
be referred to in a unique fashion. It is
recommended that this be the numerically smallest
MAC address of all ports that belong to this
bridge. However it is only required to be unique.
When concatenated with dot1dStpPriority a unique
BridgeIdentifier is formed which is used in the
Spanning Tree Protocol."REFERENCE"P802.1d/D9, July 14, 1989: Sections 6.4.1.1.3 and 3.12.5"::={ dot1dBase 1}dot1dBaseNumPorts OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of ports controlled by this bridging
entity."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.4.1.1.3"
::={ dot1dBase 2}dot1dBaseType OBJECT-TYPESYNTAXINTEGER{unknown(1),transparent-only(2),sourceroute-only(3),srt(4)}ACCESSread-onlySTATUSmandatoryDESCRIPTION"Indicates what type of bridging this bridge can
perform. If a bridge is actually performing a
certain type of bridging this will be indicated by
entries in the port table for the given type."::={ dot1dBase 3}-- The Generic Bridge Port Tabledot1dBasePortTable OBJECT-TYPESYNTAXSEQUENCEOF Dot1dBasePortEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"A table that contains generic information about
every port that is associated with this bridge.
Transparent, source-route, and srt ports are
included."::={ dot1dBase 4}dot1dBasePortEntry OBJECT-TYPESYNTAX Dot1dBasePortEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"A list of information for each port of the
bridge."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.4.2, 6.6.1"INDEX{ dot1dBasePort }::={ dot1dBasePortTable 1}
Dot1dBasePortEntry ::=SEQUENCE{
dot1dBasePort
INTEGER,
dot1dBasePortIfIndex
INTEGER,
dot1dBasePortCircuit
OBJECTIDENTIFIER,
dot1dBasePortDelayExceededDiscards
Counter,
dot1dBasePortMtuExceededDiscards
Counter}dot1dBasePort OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"The port number of the port for which this entry
contains bridge management information."::={ dot1dBasePortEntry 1}dot1dBasePortIfIndex OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION
"The value of the instance of the ifIndex object,
defined in [4,6], for the interface corresponding
to this port."::={ dot1dBasePortEntry 2}dot1dBasePortCircuit OBJECT-TYPESYNTAXOBJECTIDENTIFIERACCESSread-onlySTATUSmandatoryDESCRIPTION"For a port which (potentially) has the same value
of dot1dBasePortIfIndex as another port on the
same bridge, this object contains the name of an
object instance unique to this port. For example,
in the case where multiple ports correspond one-
to-one with multiple X.25 virtual circuits, this
value might identify an (e.g., the first) object
instance associated with the X.25 virtual circuit
corresponding to this port.
For a port which has a unique value of
dot1dBasePortIfIndex, this object can have the
value { 0 0 }."::={ dot1dBasePortEntry 3}dot1dBasePortDelayExceededDiscards OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of frames discarded by this port due
to excessive transit delay through the bridge. It
is incremented by both transparent and source
route bridges."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"::={ dot1dBasePortEntry 4}
dot1dBasePortMtuExceededDiscards OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of frames discarded by this port due
to an excessive size. It is incremented by both
transparent and source route bridges."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"::={ dot1dBasePortEntry 5}-- the dot1dStp group-- Implementation of the dot1dStp group is optional. It is-- implemented by those bridges that support the Spanning Tree-- Protocol. Transparent, Source Route, and SRT bridges will
-- implement this group only if they support the Spanning Tree-- Protocol.dot1dStpProtocolSpecification OBJECT-TYPESYNTAXINTEGER{unknown(1),decLb100(2),ieee8021d(3)}ACCESSread-onlySTATUSmandatoryDESCRIPTION"An indication of what version of the Spanning
Tree Protocol is being run. The value
'decLb100(2)' indicates the DEC LANbridge 100
Spanning Tree protocol. IEEE 802.1d
implementations will return 'ieee8021d(3)'. If
future versions of the IEEE Spanning Tree Protocol
are released that are incompatible with the
current version a new value will be defined."::={ dot1dStp 1}dot1dStpPriority OBJECT-TYPESYNTAXINTEGER(0..65535)ACCESSread-writeSTATUSmandatoryDESCRIPTION"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."
REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.7"::={ dot1dStp 2}dot1dStpTimeSinceTopologyChange OBJECT-TYPESYNTAXTimeTicksACCESSread-onlySTATUSmandatoryDESCRIPTION"The time (in hundredths of a second) since the
last time a topology change was detected by the
bridge entity."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.8.1.1.3"::={ dot1dStp 3}dot1dStpTopChanges OBJECT-TYPESYNTAXCounter
ACCESSread-onlySTATUSmandatoryDESCRIPTION"The total number of topology changes detected by
this bridge since the management entity was last
reset or initialized."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.8.1.1.3"::={ dot1dStp 4}dot1dStpDesignatedRoot OBJECT-TYPESYNTAXBridgeIdACCESSread-onlySTATUSmandatoryDESCRIPTION"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."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.1"::={ dot1dStp 5}dot1dStpRootCost OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"The cost of the path to the root as seen from
this bridge."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.2"::={ dot1dStp 6}dot1dStpRootPort OBJECT-TYPE
SYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"The port number of the port which offers the
lowest cost path from this bridge to the root
bridge."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.3"::={ dot1dStp 7}dot1dStpMaxAge OBJECT-TYPESYNTAXTimeoutACCESSread-onlySTATUSmandatoryDESCRIPTION"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."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.4"::={ dot1dStp 8}dot1dStpHelloTime OBJECT-TYPESYNTAXTimeoutACCESSread-onlySTATUSmandatoryDESCRIPTION"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."REFERENCE
"P802.1d/D9, July 14, 1989: Section 4.5.3.5"::={ dot1dStp 9}dot1dStpHoldTime OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"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."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.14"::={ dot1dStp 10}dot1dStpForwardDelay OBJECT-TYPE
SYNTAXTimeoutACCESSread-onlySTATUSmandatoryDESCRIPTION"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 a particular state before moving to the
next state. For example, how long a port stays in
the Listening state when moving from Blocking to
Learning. 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
dot1dStpBridgeForwardDelay which is the value that
this bridge and all others would start using
if/when this bridge were to become the root.]"REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.6"::={ dot1dStp 11}dot1dStpBridgeMaxAge OBJECT-TYPESYNTAXTimeout(600..4000)ACCESSread-writeSTATUSmandatoryDESCRIPTION"The value that all bridges use for MaxAge when
this bridge is acting as the root. Note that
802.1d/D9 specifies that the range for this
parameter is related to the value of
dot1dStpBridgeHelloTime. The granularity of this
timer is specified by 802.1d/D9 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."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.8"::={ dot1dStp 12}dot1dStpBridgeHelloTime OBJECT-TYPESYNTAXTimeout(100..1000)ACCESSread-writeSTATUSmandatoryDESCRIPTION"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/D9 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."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.9"::={ dot1dStp 13}dot1dStpBridgeForwardDelay OBJECT-TYPESYNTAXTimeout(400..3000)ACCESSread-writeSTATUSmandatoryDESCRIPTION"The value that all bridges use for ForwardDelay
when this bridge is acting as the root. Note that
802.1d/D9 specifies that the range for this
parameter is related to the value of
dot1dStpBridgeMaxAge. The granularity of this
timer is specified by 802.1d/D9 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."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.3.10"::={ dot1dStp 14}-- The Spanning Tree Port Tabledot1dStpPortTable OBJECT-TYPESYNTAXSEQUENCEOF Dot1dStpPortEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"A table that contains port-specific information
for the Spanning Tree Protocol."::={ dot1dStp 15}
dot1dStpPortEntry OBJECT-TYPESYNTAX Dot1dStpPortEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"A list of information maintained by every port
about the Spanning Tree Protocol state for that
port."INDEX{ dot1dStpPort }::={ dot1dStpPortTable 1}
Dot1dStpPortEntry ::=SEQUENCE{
dot1dStpPort
INTEGER,
dot1dStpPortPriority
INTEGER,
dot1dStpPortState
INTEGER,
dot1dStpPortEnable
INTEGER,
dot1dStpPortPathCost
INTEGER,
dot1dStpPortDesignatedRoot
BridgeId,
dot1dStpPortDesignatedCost
INTEGER,
dot1dStpPortDesignatedBridge
BridgeId,
dot1dStpPortDesignatedPort
OCTETSTRING,
dot1dStpPortForwardTransitions
Counter}dot1dStpPort OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"The port number of the port for which this entry
contains Spanning Tree Protocol management
information."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.8.2.1.2"::={ dot1dStpPortEntry 1}dot1dStpPortPriority OBJECT-TYPESYNTAXINTEGER(0..255)ACCESSread-writeSTATUSmandatoryDESCRIPTION"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 other
octet of the Port ID is given by the value of
dot1dStpPort."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.5.1"::={ dot1dStpPortEntry 2}dot1dStpPortState OBJECT-TYPESYNTAXINTEGER{disabled(1),blocking(2),listening(3),learning(4),forwarding(5),broken(6)
}ACCESSread-onlySTATUSmandatoryDESCRIPTION"The port's current state as defined by
application of the Spanning Tree Protocol. This
state controls what action a port takes on
reception of a frame. If the bridge has detected
a port that is malfunctioning it will place that
port into the broken(6) state. For ports which
are disabled (see dot1dStpPortEnable), this object
will have a value of disabled(1)."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.5.2"::={ dot1dStpPortEntry 3}dot1dStpPortEnable OBJECT-TYPESYNTAXINTEGER{
enabled(1),disabled(2)}ACCESSread-writeSTATUSmandatoryDESCRIPTION"The enabled/disabled status of the port."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.5.2"::={ dot1dStpPortEntry 4}dot1dStpPortPathCost OBJECT-TYPESYNTAXINTEGER(1..65535)ACCESSread-write
STATUSmandatoryDESCRIPTION"The contribution of this port to the path cost of
paths towards the spanning tree root which include
this port."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.5.3"::={ dot1dStpPortEntry 5}dot1dStpPortDesignatedRoot OBJECT-TYPESYNTAXBridgeIdACCESSread-onlySTATUSmandatoryDESCRIPTION"The unique Bridge Identifier of the Bridge
recorded as the Root in the Configuration BPDUs
transmitted by the Designated Bridge for the
segment to which the port is attached."
REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.5.4"::={ dot1dStpPortEntry 6}dot1dStpPortDesignatedCost OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"The path cost of the Designated Port of the
segment connected to this port. This value is
compared to the Root Path Cost field in received
bridge PDUs."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.5.5"::={ dot1dStpPortEntry 7}dot1dStpPortDesignatedBridge OBJECT-TYPE
SYNTAXBridgeIdACCESSread-onlySTATUSmandatoryDESCRIPTION"The Bridge Identifier of the bridge which this
port considers to be the Designated Bridge for
this port's segment."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.5.6"::={ dot1dStpPortEntry 8}dot1dStpPortDesignatedPort OBJECT-TYPESYNTAXOCTETSTRING(SIZE(2))ACCESSread-onlySTATUSmandatory
DESCRIPTION"The Port Identifier of the port on the Designated
Bridge for this port's segment."REFERENCE"P802.1d/D9, July 14, 1989: Section 4.5.5.7"::={ dot1dStpPortEntry 9}dot1dStpPortForwardTransitions OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of times this port has transitioned
from the Learning state to the Forwarding state."::={ dot1dStpPortEntry 10}-- the dot1dSr group
-- Implementation of the dot1dSr group is optional. It is-- implemented by those bridges that support the source route-- bridging mode, including Source Route and SRT bridges.dot1dSrPortTable OBJECT-TYPESYNTAXSEQUENCEOF Dot1dSrPortEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"A table that contains information about every
port that is associated with this source route
bridge."::={ dot1dSr 1}dot1dSrPortEntry OBJECT-TYPESYNTAX Dot1dSrPortEntry
ACCESSnot-accessible
STATUSmandatoryDESCRIPTION"A list of information for each port of a source
route bridge."INDEX{ dot1dSrPort }::={ dot1dSrPortTable 1}
Dot1dSrPortEntry ::=SEQUENCE{
dot1dSrPort
INTEGER,
dot1dSrPortHopCount
INTEGER,
dot1dSrPortLocalSegment
INTEGER,
dot1dSrPortBridgeNum
INTEGER,
dot1dSrPortTargetSegment
INTEGER,
dot1dSrPortLargestFrame
INTEGER,
dot1dSrPortSTESpanMode
INTEGER,
dot1dSrPortSpecInFrames
Counter,
dot1dSrPortSpecOutFrames
Counter,
dot1dSrPortApeInFrames
Counter,
dot1dSrPortApeOutFrames
Counter,
dot1dSrPortSteInFrames
Counter,
dot1dSrPortSteOutFrames
Counter,
dot1dSrPortSegmentMismatchDiscards
Counter,
dot1dSrPortDuplicateSegmentDiscards
Counter,
dot1dSrPortHopCountExceededDiscards
Counter
}dot1dSrPort OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"The port number of the port for which this entry
contains Source Route management information."::={ dot1dSrPortEntry 1}dot1dSrPortHopCount OBJECT-TYPESYNTAXINTEGERACCESSread-writeSTATUSmandatoryDESCRIPTION"The maximum number of routing descriptors allowed
in an All Paths or Spanning Tree Explorer frames."::={ dot1dSrPortEntry 2}
dot1dSrPortLocalSegment OBJECT-TYPESYNTAXINTEGERACCESSread-writeSTATUSmandatoryDESCRIPTION"The segment number that uniquely identifies the
segment to which this port is connected. Current
source routing protocols limit this value to the
range: 0 through 4095. A value of 65535 signifies
that no segment number is assigned to this port."::={ dot1dSrPortEntry 3}dot1dSrPortBridgeNum OBJECT-TYPESYNTAXINTEGERACCESSread-writeSTATUSmandatory
DESCRIPTION"A bridge number uniquely identifies a bridge when
more than one bridge is used to span the same two
segments. Current source routing protocols limit
this value to the range: 0 through 15. A value of
65535 signifies that no bridge number is assigned
to this bridge."::={ dot1dSrPortEntry 4}dot1dSrPortTargetSegment OBJECT-TYPESYNTAXINTEGERACCESSread-writeSTATUSmandatoryDESCRIPTION"The segment number that corresponds to the target
segment this port is considered to be connected to
by the bridge. Current source routing protocols
limit this value to the range: 0 through 4095. A
value of 65535 signifies that no target segment is
assigned to this port."::={ dot1dSrPortEntry 5}-- It would be nice if we could use ifMtu as the size of the-- largest frame, but we can't because ifMtu is defined to be-- the size that the (inter-)network layer can use which can-- differ from the MAC layer (especially if several layers of-- encapsulation are used).dot1dSrPortLargestFrame OBJECT-TYPESYNTAXINTEGER{dot1dSrMtu516 (516),dot1dSrMtu1500 (1500),
dot1dSrMtu2052 (2052),dot1dSrMtu4472 (4472),dot1dSrMtu8144 (8144),dot1dSrMtu11407 (11407),-- yes this is correct don'tdot1dSrMtu17800 (17800),-- ask me where it came from.dot1dSrMtu65535 (65535)}ACCESSread-writeSTATUSmandatoryDESCRIPTION
"The maximum size of the INFO field (LLC and
above) that this port can send/receive. It does
not include any MAC level (framing) octets. The
value of this object is used by this bridge to
determine whether a modification of the
LargestFrame (LF, see [14]) field of the Routing
Control field of the Routing Information Field is
necessary. Valid values as defined by the 802.5
source routing bridging specification[14] are 516,
1500, 2052, 4472, 8144, 11407, 17800, and 65535
octets. Behavior of the port when an illegal
value is written is implementation specific. It
is recommended that a reasonable legal value be
chosen."::={ dot1dSrPortEntry 6}dot1dSrPortSTESpanMode OBJECT-TYPESYNTAXINTEGER{
auto-span(1),disabled(2),forced(3)}ACCESSread-writeSTATUSmandatoryDESCRIPTION"Determines how this port behaves when presented
with a Spanning Tree Explorer frame. The value
'disabled(2)' indicates that the port will not
accept or send Spanning Tree Explorer packets; any
STE packets received will be silently discarded.
The value 'forced(3)' indicates the port will
always accept and propagate Spanning Tree Explorer
frames. This allows a manually configured
Spanning Tree for this class of packet to be
configured. Note that unlike transparent bridging
this is not catastrophic to the network if there
are loops. The value 'auto-span(1)' can only be
returned by a bridge that both implements the
Spanning Tree Protocol and has use of the protocol
enabled on this port. The behavior of the port for
Spanning Tree Explorer frames is determined by the
state of dot1dStpPortState. If the port is in the
'forwarding' state, the frame will be accepted or
propagated. Otherwise it will be silently
discarded."::={ dot1dSrPortEntry 7}dot1dSrPortSpecInFrames OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION
"The number of specifically routed frames that
have been received from this port's segment."::={ dot1dSrPortEntry 8}dot1dSrPortSpecOutFrames OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of specifically routed frames that
this port has transmitted on its segment."::={ dot1dSrPortEntry 9}dot1dSrPortApeInFrames OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatory
DESCRIPTION"The number of all paths explorer frames that have
been received by this port from its segment."::={ dot1dSrPortEntry 10}dot1dSrPortApeOutFrames OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of all paths explorer frames that have
been transmitted by this port on its segment."::={ dot1dSrPortEntry 11}dot1dSrPortSteInFrames OBJECT-TYPESYNTAXCounter
ACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of spanning tree explorer frames that
have been received by this port from its segment."::={ dot1dSrPortEntry 12}dot1dSrPortSteOutFrames OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of spanning tree explorer frames that
have been transmitted by this port on its
segment."::={ dot1dSrPortEntry 13}dot1dSrPortSegmentMismatchDiscards OBJECT-TYPE
SYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of explorer frames that have been
discarded by this port because the routing
descriptor field contained an invalid adjacent
segment value."::={ dot1dSrPortEntry 14}dot1dSrPortDuplicateSegmentDiscards OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of frames that have been discarded by
this port because the routing descriptor field
contained a duplicate segment identifier."::={ dot1dSrPortEntry 15}dot1dSrPortHopCountExceededDiscards OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of explorer frames that have been
discarded by this port because the Routing
Information Field has exceeded the maximum route
descriptor length."::={ dot1dSrPortEntry 16}-- the dot1dTp group-- Implementation of the dot1dTp group is optional. It is-- implemented by those bridges that support the transparent
-- bridging mode. A transparent or SRT bridge will implement-- this group.dot1dTpLearnedEntryDiscards OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The total number of Forwarding Database entries,
which have been or would have been learnt, but
have been discarded due to a lack of space to
store them in the Forwarding Database. If this
counter is increasing, it indicates that the
Forwarding Database is regularly becoming full (a
condition which has unpleasant performance effects
on the subnetwork). If this counter has a
significant value but is not presently increasing,
it indicates that the problem has been occurring
but is not persistent."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.7.1.1.3"::={ dot1dTp 1}dot1dTpAgingTime OBJECT-TYPESYNTAXINTEGERACCESSread-writeSTATUSmandatoryDESCRIPTION"The timeout period in seconds for aging out
dynamically learned forwarding information."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.7.1.1.3"::={ dot1dTp 2}-- The Forwarding Database for Transparent Bridgesdot1dTpFdbTable OBJECT-TYPE
SYNTAXSEQUENCEOF Dot1dTpFdbEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"A table that contains information about unicast
entries for which the bridge has forwarding and/or
filtering information. This information is used
by the transparent bridging function in
determining how to propagate a received frame."::={ dot1dTp 3}dot1dTpFdbEntry OBJECT-TYPESYNTAX Dot1dTpFdbEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"Information about a specific unicast MAC address
for which the bridge has some forwarding and/or
filtering information."INDEX{ dot1dTpFdbAddress }::={ dot1dTpFdbTable 1}
Dot1dTpFdbEntry ::=SEQUENCE{
dot1dTpFdbAddress
MacAddress,
dot1dTpFdbPort
INTEGER,
dot1dTpFdbStatus
INTEGER}dot1dTpFdbAddress OBJECT-TYPESYNTAXMacAddressACCESSread-onlySTATUSmandatory
DESCRIPTION"A unicast MAC address for which the bridge has
forwarding and/or filtering information."REFERENCE"P802.1d/D9, July 14, 1989: Section 3.9.1, 3.9.2"::={ dot1dTpFdbEntry 1}dot1dTpFdbPort OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION"Either the value '0', or the port number of the
port on which a frame having a source address
equal to the value of the corresponding instance
of dot1dTpFdbAddress has been seen. A value of
'0' indicates that the port number has not been
learned but that the bridge does have some
forwarding/filtering information about this
address (e.g. in the dot1dStaticTable).
Implementors are encouraged to assign the port
value to this object whenever it is learned even
for addresses for which the corresponding value of
dot1dTpFdbStatus is not learned(3)."::={ dot1dTpFdbEntry 2}dot1dTpFdbStatus OBJECT-TYPESYNTAXINTEGER{other(1),invalid(2),learned(3),self(4),
mgmt(5)}ACCESSread-onlySTATUSmandatoryDESCRIPTION"The status of this entry. The meanings of the
values are:
other(1) : none of the following. This would
include the case where some other
MIB object (not the corresponding
instance of dot1dTpFdbPort, nor an
entry in the dot1dStaticTable) is
being used to determine if and how
frames addressed to the value of
the corresponding instance of
dot1dTpFdbAddress are being
forwarded.
invalid(2) : this entry is not longer valid
(e.g., it was learned but has since
aged-out), but has not yet been
flushed from the table.
learned(3) : the value of the corresponding
instance of dot1dTpFdbPort was
learned, and is being used.
self(4) : the value of the corresponding
instance of dot1dTpFdbAddress
represents one of the bridge's
addresses. The corresponding
instance of dot1dTpFdbPort
indicates which of the bridge's
ports has this address.
mgmt(5) : the value of the corresponding
instance of dot1dTpFdbAddress is
also the value of an existing
instance of dot1dStaticAddress."::={ dot1dTpFdbEntry 3}
-- Port Table for Transparent Bridgesdot1dTpPortTable OBJECT-TYPESYNTAXSEQUENCEOF Dot1dTpPortEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"A table that contains information about every
port that is associated with this transparent
bridge."::={ dot1dTp 4}dot1dTpPortEntry OBJECT-TYPESYNTAX Dot1dTpPortEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"A list of information for each port of a
transparent bridge."INDEX{ dot1dTpPort }::={ dot1dTpPortTable 1}
Dot1dTpPortEntry ::=SEQUENCE{
dot1dTpPort
INTEGER,
dot1dTpPortMaxInfo
INTEGER,
dot1dTpPortInFrames
Counter,
dot1dTpPortOutFrames
Counter,
dot1dTpPortInDiscards
Counter}dot1dTpPort OBJECT-TYPESYNTAXINTEGERACCESSread-only
STATUSmandatoryDESCRIPTION"The port number of the port for which this entry
contains Transparent bridging management
information."::={ dot1dTpPortEntry 1}-- It would be nice if we could use ifMtu as the size of the-- largest INFO field, but we can't because ifMtu is defined-- to be the size that the (inter-)network layer can use which-- can differ from the MAC layer (especially if several layers-- of encapsulation are used).dot1dTpPortMaxInfo OBJECT-TYPESYNTAXINTEGERACCESSread-onlySTATUSmandatoryDESCRIPTION
"The maximum size of the INFO (non-MAC) field that
this port will receive or transmit."::={ dot1dTpPortEntry 2}dot1dTpPortInFrames OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of frames that have been received by
this port from its segment. Note that a frame
received on the interface corresponding to this
port is only counted by this object if and only if
it is for a protocol being processed by the local
bridging function."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"
::={ dot1dTpPortEntry 3}dot1dTpPortOutFrames OBJECT-TYPESYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"The number of frames that have been transmitted
by this port to its segment. Note that a frame
transmitted on the interface corresponding to this
port is only counted by this object if and only if
it is for a protocol being processed by the local
bridging function."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"::={ dot1dTpPortEntry 4}dot1dTpPortInDiscards OBJECT-TYPE
SYNTAXCounterACCESSread-onlySTATUSmandatoryDESCRIPTION"Count of valid frames received which were
discarded (i.e., filtered) by the Forwarding
Process."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"::={ dot1dTpPortEntry 5}-- The Static (Destination-Address Filtering) Database-- Implementation of this group is optional.dot1dStaticTable OBJECT-TYPESYNTAXSEQUENCEOF Dot1dStaticEntry
ACCESSnot-accessible
STATUSmandatoryDESCRIPTION"A table containing filtering information
configured into the bridge by (local or network)
management specifying the set of ports to which
frames received from specific ports and containing
specific destination addresses are allowed to be
forwarded. The value of zero in this table as the
port number from which frames with a specific
destination address are received, is used to
specify all ports for which there is no specific
entry in this table for that particular
destination address. Entries are valid for
unicast and for group/broadcast addresses."REFERENCE"P802.1d/D9, July 14, 1989: Section 6.7.2"::={ dot1dStatic 1}
dot1dStaticEntry OBJECT-TYPESYNTAX Dot1dStaticEntry
ACCESSnot-accessibleSTATUSmandatoryDESCRIPTION"Filtering information configured into the bridge
by (local or network) management specifying the
set of ports to which frames received from a
specific port and containing a specific
destination address are allowed to be forwarded."REFERENCE"P802.1d/D9, July 14,1989: Section 6.7.2"INDEX{ dot1dStaticAddress, dot1dStaticReceivePort }::={ dot1dStaticTable 1}
Dot1dStaticEntry ::=SEQUENCE{
dot1dStaticAddress
MacAddress,
dot1dStaticReceivePort
INTEGER,
dot1dStaticAllowedToGoTo
OCTETSTRING,
dot1dStaticStatus
INTEGER}dot1dStaticAddress OBJECT-TYPESYNTAXMacAddressACCESSread-writeSTATUSmandatoryDESCRIPTION"The destination MAC address in a frame to which
this entry's filtering information applies. This
object can take the value of a unicast address, a
group address or the broadcast address."REFERENCE
"P802.1d/D9, July 14, 1989: Section 3.9.1, 3.9.2"::={ dot1dStaticEntry 1}dot1dStaticReceivePort OBJECT-TYPESYNTAXINTEGERACCESSread-writeSTATUSmandatoryDESCRIPTION"Either the value '0', or the port number of the
port from which a frame must be received in order
for this entry's filtering information to apply.
A value of zero indicates that this entry applies
on all ports of the bridge for which there is no
other applicable entry."::={ dot1dStaticEntry 2}dot1dStaticAllowedToGoTo OBJECT-TYPE
SYNTAXOCTETSTRINGACCESSread-writeSTATUSmandatoryDESCRIPTION"The set of ports to which frames received from a
specific port and destined for a specific MAC
address, are allowed to be forwarded. Each octet
within the value of this object specifies a set of
eight ports, with the first octet specifying ports
1 through 8, the second octet specifying ports 9
through 16, etc. Within each octet, the most
significant bit represents the lowest numbered
port, and the least significant bit represents the
highest numbered port. Thus, each port of the
bridge is represented by a single bit within the
value of this object. If that bit has a value of
'1' then that port is included in the set of
ports; the port is not included if its bit has a
value of '0'. (Note that the setting of the bit
corresponding to the port from which a frame is
received is irrelevant.)"::={ dot1dStaticEntry 3}dot1dStaticStatus OBJECT-TYPESYNTAXINTEGER{other(1),invalid(2),permanent(3),deleteOnReset(4),deleteOnTimeout(5)
}ACCESSread-writeSTATUSmandatoryDESCRIPTION"This object indicates the status of this entry.
other(1) - this entry is currently in use but
the conditions under which it will
remain so are different from each of the
following values.
invalid(2) - writing this value to the object
removes the corresponding entry.
permanent(3) - this entry is currently in use
and will remain so after the next reset
of the bridge.
deleteOnReset(4) - this entry is currently in
use and will remain so until the next
reset of the bridge.
deleteOnTimeout(5) - this entry is currently
in use and will remain so until it is
aged out."::={ dot1dStaticEntry 4}-- Traps for use by Bridges-- Traps for the Spanning Tree ProtocolnewRoot TRAP-TYPEENTERPRISE dot1dBridge
DESCRIPTION"The newRoot trap indicates that the sending agent
has become the new root of the Spanning Tree; 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."::=1topologyChange TRAP-TYPEENTERPRISE dot1dBridge
DESCRIPTION"A topologyChange trap is sent by a bridge when
any of its configured ports 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 newRoot trap is sent for the
same transition."::=2END