-- bridges.
-- ---------------------------------------------------------- --
dot1dBaseBridgeAddress OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
"IEEE 802.1D-1998: clauses 14.4.1.1.3 and 7.12.5"
::= { dot1dBase 1 }
dot1dBaseNumPorts OBJECT-TYPE
SYNTAX Integer32
UNITS "ports"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of ports controlled by this bridging
entity."
REFERENCE
"IEEE 802.1D-1998: clause 14.4.1.1.3"
::= { dot1dBase 2 }
dot1dBaseType OBJECT-TYPE
SYNTAX INTEGER {
unknown(1),
transparent-only(2),
sourceroute-only(3),
srt(4)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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 Table
-- ---------------------------------------------------------- --
dot1dBasePortTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dBasePortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"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-TYPE
SYNTAX Dot1dBasePortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of information for each port of the bridge."
REFERENCE
"IEEE 802.1D-1998: clause 14.4.2, 14.6.1"
INDEX { dot1dBasePort }
::= { dot1dBasePortTable 1 }
Dot1dBasePortEntry ::=
SEQUENCE {
dot1dBasePort
Integer32,
dot1dBasePortIfIndex
InterfaceIndex,
dot1dBasePortCircuit
OBJECT IDENTIFIER,
dot1dBasePortDelayExceededDiscards
Counter32,
dot1dBasePortMtuExceededDiscards
Counter32
}
dot1dBasePort OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The port number of the port for which this entry
contains bridge management information."
::= { dot1dBasePortEntry 1 }
dot1dBasePortIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of the instance of the ifIndex object,
defined in IF-MIB, for the interface corresponding
to this port."
::= { dot1dBasePortEntry 2 }
dot1dBasePortCircuit OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"For a port that (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-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
"IEEE 802.1D-1998: clause 14.6.1.1.3"
::= { dot1dBasePortEntry 4 }
dot1dBasePortMtuExceededDiscards OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of frames discarded by this port due
to an excessive size. It is incremented by both
transparent and source route bridges."
REFERENCE
"IEEE 802.1D-1998: clause 14.6.1.1.3"
::= { dot1dBasePortEntry 5 }
-- ---------------------------------------------------------- --
-- the dot1dStp subtree
-- ---------------------------------------------------------- --
-- Implementation of the dot1dStp subtree is optional. It is
-- implemented by those bridges that support the Spanning Tree
-- Protocol.
-- ---------------------------------------------------------- --
dot1dStpProtocolSpecification OBJECT-TYPE
SYNTAX INTEGER {
unknown(1),
decLb100(2),
ieee8021d(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
that are incompatible with the current version
are released a new value will be defined."
::= { dot1dStp 1 }
dot1dStpPriority OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"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.
On bridges supporting IEEE 802.1t or IEEE 802.1w,
permissible values are 0-61440, in steps of 4096."
REFERENCE
"IEEE 802.1D-1998 clause 8.10.2, Table 8-4,
IEEE 802.1t clause 8.10.2, Table 8-4, clause 14.3."
::= { dot1dStp 2 }
dot1dStpTimeSinceTopologyChange OBJECT-TYPE
SYNTAX TimeTicks
UNITS "centi-seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time (in hundredths of a second) since the
last time a topology change was detected by the
bridge entity.
For RSTP, this reports the time since the tcWhile
timer for any port on this Bridge was nonzero."
REFERENCE
"IEEE 802.1D-1998 clause 14.8.1.1.,
IEEE 802.1w clause 14.8.1.1."
::= { dot1dStp 3 }
dot1dStpTopChanges OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of topology changes detected by
this bridge since the management entity was last
reset or initialized."
REFERENCE
"IEEE 802.1D-1998 clause 14.8.1.1."
::= { dot1dStp 4 }
dot1dStpDesignatedRoot OBJECT-TYPE
SYNTAX BridgeId
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
"IEEE 802.1D-1998: clause 8.5.3.1"
::= { dot1dStp 5 }
dot1dStpRootCost OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The cost of the path to the root as seen from
this bridge."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.3.2"
::= { dot1dStp 6 }
dot1dStpRootPort OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The port number of the port that offers the lowest
cost path from this bridge to the root bridge."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.3.3"
::= { dot1dStp 7 }
dot1dStpMaxAge OBJECT-TYPE
SYNTAX Timeout
UNITS "centi-seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
"IEEE 802.1D-1998: clause 8.5.3.4"
::= { dot1dStp 8 }
dot1dStpHelloTime OBJECT-TYPE
SYNTAX Timeout
UNITS "centi-seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
"IEEE 802.1D-1998: clause 8.5.3.5"
::= { dot1dStp 9 }
dot1dStpHoldTime OBJECT-TYPE
SYNTAX Integer32
UNITS "centi-seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
"IEEE 802.1D-1998: clause 8.5.3.14"
::= { dot1dStp 10 }
dot1dStpForwardDelay OBJECT-TYPE
SYNTAX Timeout
UNITS "centi-seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
dot1dStpBridgeForwardDelay, which is the value that this
bridge and all others would start using if/when this
bridge were to become the root.]"
REFERENCE
"IEEE 802.1D-1998: clause 8.5.3.6"
::= { dot1dStp 11 }
dot1dStpBridgeMaxAge OBJECT-TYPE
SYNTAX Timeout (600..4000)
UNITS "centi-seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The value that all bridges use for MaxAge when this
bridge is acting as the root. Note that 802.1D-1998
specifies that the range for this parameter is related
to the value of dot1dStpBridgeHelloTime. The
granularity of this timer is specified by 802.1D-1998 to
be 1 second. An agent may return a badValue error if a
set is attempted to a value that is not a whole number
of seconds."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.3.8"
::= { dot1dStp 12 }
dot1dStpBridgeHelloTime OBJECT-TYPE
SYNTAX Timeout (100..1000)
UNITS "centi-seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"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-1998 to be 1 second. An
agent may return a badValue error if a set is attempted
to a value that is not a whole number of seconds."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.3.9"
::= { dot1dStp 13 }
dot1dStpBridgeForwardDelay OBJECT-TYPE
SYNTAX Timeout (400..3000)
UNITS "centi-seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The value that all bridges use for ForwardDelay when
this bridge is acting as the root. Note that
802.1D-1998 specifies that the range for this parameter
is related to the value of dot1dStpBridgeMaxAge. The
granularity of this timer is specified by 802.1D-1998 to
be 1 second. An agent may return a badValue error if a
set is attempted to a value that is not a whole number
of seconds."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.3.10"
::= { dot1dStp 14 }
-- ---------------------------------------------------------- --
-- The Spanning Tree Port Table
-- ---------------------------------------------------------- --
dot1dStpPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dStpPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that contains port-specific information
for the Spanning Tree Protocol."
::= { dot1dStp 15 }
dot1dStpPortEntry OBJECT-TYPE
SYNTAX Dot1dStpPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of information maintained by every port about
the Spanning Tree Protocol state for that port."
INDEX { dot1dStpPort }
::= { dot1dStpPortTable 1 }
Dot1dStpPortEntry ::=
SEQUENCE {
dot1dStpPort
Integer32,
dot1dStpPortPriority
Integer32,
dot1dStpPortState
INTEGER,
dot1dStpPortEnable
INTEGER,
dot1dStpPortPathCost
Integer32,
dot1dStpPortDesignatedRoot
BridgeId,
dot1dStpPortDesignatedCost
Integer32,
dot1dStpPortDesignatedBridge
BridgeId,
dot1dStpPortDesignatedPort
OCTET STRING,
dot1dStpPortForwardTransitions
Counter32,
dot1dStpPortPathCost32
Integer32
}
dot1dStpPort OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The port number of the port for which this entry
contains Spanning Tree Protocol management information."
REFERENCE
"IEEE 802.1D-1998: clause 14.8.2.1.2"
::= { dot1dStpPortEntry 1 }
dot1dStpPortPriority OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The value of the priority field that 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.
On bridges supporting IEEE 802.1t or IEEE 802.1w,
permissible values are 0-240, in steps of 16."
REFERENCE
"IEEE 802.1D-1998 clause 8.10.2, Table 8-4,
IEEE 802.1t clause 8.10.2, Table 8-4, clause 14.3."
::= { dot1dStpPortEntry 2 }
dot1dStpPortState OBJECT-TYPE
SYNTAX INTEGER {
disabled(1),
blocking(2),
listening(3),
learning(4),
forwarding(5),
broken(6)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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 that are disabled (see dot1dStpPortEnable), this
object will have a value of disabled(1)."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.5.2"
::= { dot1dStpPortEntry 3 }
dot1dStpPortEnable OBJECT-TYPE
SYNTAX INTEGER {
enabled(1),
disabled(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The enabled/disabled status of the port."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.5.2"
::= { dot1dStpPortEntry 4 }
dot1dStpPortPathCost OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The contribution of this port to the path cost of
paths towards the spanning tree root which include
this port. 802.1D-1998 recommends that the default
value of this parameter be in inverse proportion to
the speed of the attached LAN.
New implementations should support dot1dStpPortPathCost32.
If the port path costs exceeds the maximum value of this
object then this object should report the maximum value,
namely 65535. Applications should try to read the
dot1dStpPortPathCost32 object if this object reports