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BRIDGE-MIB.txt
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BRIDGE-MIB.txt
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BRIDGE-MIB DEFINITIONS ::= BEGIN
-- ---------------------------------------------------------- --
-- MIB for IEEE 802.1D devices
-- ---------------------------------------------------------- --
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
Counter32, Integer32, TimeTicks, mib-2
FROM SNMPv2-SMI
TEXTUAL-CONVENTION, MacAddress
FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
FROM SNMPv2-CONF
InterfaceIndex FROM IF-MIB
;
dot1dBridge MODULE-IDENTITY
LAST-UPDATED "200509190000Z"
ORGANIZATION "IETF Bridge MIB Working Group"
CONTACT-INFO
"Email: bridge-mib@ietf.org
K.C. Norseth (Editor)
L-3 Communications
Tel: +1 801-594-2809
Email: kenyon.c.norseth@L-3com.com
Postal: 640 N. 2200 West.
Salt Lake City, Utah 84116-0850
Les Bell (Editor)
3Com Europe Limited
Phone: +44 1442 438025
Email: elbell@ntlworld.com
Postal: 3Com Centre, Boundary Way
Hemel Hempstead
Herts. HP2 7YU
UK
Send comments to <bridge-mib@ietf.org>"
DESCRIPTION
"The Bridge MIB module for managing devices that support
IEEE 802.1D.
Copyright (C) The Internet Society (2005). This version of
this MIB module is part of RFC 4188; see the RFC itself for
full legal notices."
REVISION "200509190000Z"
DESCRIPTION
"Third revision, published as part of RFC 4188.
The MIB module has been converted to SMIv2 format.
Conformance statements have been added and some
description and reference clauses have been updated.
The object dot1dStpPortPathCost32 was added to
support IEEE 802.1t and the permissible values of
dot1dStpPriority and dot1dStpPortPriority have been
clarified for bridges supporting IEEE 802.1t or
IEEE 802.1w.
The interpretation of dot1dStpTimeSinceTopologyChange
has been clarified for bridges supporting the Rapid
Spanning Tree Protocol (RSTP)."
REVISION "199307310000Z"
DESCRIPTION
"Second revision, published as part of RFC 1493."
REVISION "199112310000Z"
DESCRIPTION
"Initial revision, published as part of RFC 1286."
::= { mib-2 17 }
-- ---------------------------------------------------------- --
-- Textual Conventions
-- ---------------------------------------------------------- --
BridgeId ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"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)."
SYNTAX OCTET STRING (SIZE (8))
Timeout ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"A Spanning Tree Protocol (STP) timer in units of 1/100
seconds. 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
hundredths 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-1998 specifies a settable granularity of no more
than one second for these timers. To avoid ambiguity,
a conversion algorithm is defined below for converting
between the different units, which ensures a timer's
value is not distorted by multiple conversions.
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 nonzero]
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)."
SYNTAX Integer32
-- ---------------------------------------------------------- --
-- subtrees in the Bridge MIB
-- ---------------------------------------------------------- --
dot1dNotifications OBJECT IDENTIFIER ::= { dot1dBridge 0 }
dot1dBase OBJECT IDENTIFIER ::= { dot1dBridge 1 }
dot1dStp OBJECT IDENTIFIER ::= { dot1dBridge 2 }
dot1dSr OBJECT IDENTIFIER ::= { dot1dBridge 3 }
-- documented in RFC 1525
dot1dTp OBJECT IDENTIFIER ::= { dot1dBridge 4 }
dot1dStatic OBJECT IDENTIFIER ::= { dot1dBridge 5 }
-- Subtrees used by Bridge MIB Extensions:
-- pBridgeMIB MODULE-IDENTITY ::= { dot1dBridge 6 }
-- qBridgeMIB MODULE-IDENTITY ::= { dot1dBridge 7 }
-- Note that the practice of registering related MIB modules
-- below dot1dBridge has been discouraged since there is no
-- robust mechanism to track such registrations.
dot1dConformance OBJECT IDENTIFIER ::= { dot1dBridge 8 }
-- ---------------------------------------------------------- --
-- the dot1dBase subtree
-- ---------------------------------------------------------- --
-- Implementation of the dot1dBase subtree is mandatory for all
-- 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
the maximum value."
REFERENCE "IEEE 802.1D-1998: clause 8.5.5.3"
::= { dot1dStpPortEntry 5 }
dot1dStpPortDesignatedRoot OBJECT-TYPE
SYNTAX BridgeId
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
"IEEE 802.1D-1998: clause 8.5.5.4"
::= { dot1dStpPortEntry 6 }
dot1dStpPortDesignatedCost OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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
"IEEE 802.1D-1998: clause 8.5.5.5"
::= { dot1dStpPortEntry 7 }
dot1dStpPortDesignatedBridge OBJECT-TYPE
SYNTAX BridgeId
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Bridge Identifier of the bridge that this
port considers to be the Designated Bridge for
this port's segment."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.5.6"
::= { dot1dStpPortEntry 8 }
dot1dStpPortDesignatedPort OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (2))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Port Identifier of the port on the Designated
Bridge for this port's segment."
REFERENCE
"IEEE 802.1D-1998: clause 8.5.5.7"
::= { dot1dStpPortEntry 9 }
dot1dStpPortForwardTransitions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times this port has transitioned
from the Learning state to the Forwarding state."
::= { dot1dStpPortEntry 10 }
dot1dStpPortPathCost32 OBJECT-TYPE
SYNTAX Integer32 (1..200000000)
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.
This object replaces dot1dStpPortPathCost to support
IEEE 802.1t."
REFERENCE
"IEEE 802.1t clause 8.10.2, Table 8-5."
::= { dot1dStpPortEntry 11 }
-- ---------------------------------------------------------- --
-- the dot1dTp subtree
-- ---------------------------------------------------------- --
-- Implementation of the dot1dTp subtree is optional. It is
-- implemented by those bridges that support the transparent
-- bridging mode. A transparent or SRT bridge will implement
-- this subtree.
-- ---------------------------------------------------------- --
dot1dTpLearnedEntryDiscards OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of Forwarding Database entries that
have been or would have been learned, but have been
discarded due to a lack of storage space in the
Forwarding Database. If this counter is increasing, it
indicates that the Forwarding Database is regularly
becoming full (a condition that 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
"IEEE 802.1D-1998: clause 14.7.1.1.3"
::= { dot1dTp 1 }
dot1dTpAgingTime OBJECT-TYPE
SYNTAX Integer32 (10..1000000)
UNITS "seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The timeout period in seconds for aging out
dynamically-learned forwarding information.
802.1D-1998 recommends a default of 300 seconds."
REFERENCE
"IEEE 802.1D-1998: clause 14.7.1.1.3"
::= { dot1dTp 2 }
-- ---------------------------------------------------------- --
-- The Forwarding Database for Transparent Bridges
-- ---------------------------------------------------------- --
dot1dTpFdbTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dTpFdbEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"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-TYPE
SYNTAX Dot1dTpFdbEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"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
Integer32,
dot1dTpFdbStatus
INTEGER
}
dot1dTpFdbAddress OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A unicast MAC address for which the bridge has
forwarding and/or filtering information."
REFERENCE
"IEEE 802.1D-1998: clause 7.9.1, 7.9.2"
::= { dot1dTpFdbEntry 1 }
dot1dTpFdbPort OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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-TYPE
SYNTAX INTEGER {
other(1),
invalid(2),
learned(3),
self(4),
mgmt(5)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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 no 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 Bridges
-- ---------------------------------------------------------- --
dot1dTpPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dTpPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that contains information about every port that
is associated with this transparent bridge."
::= { dot1dTp 4 }
dot1dTpPortEntry OBJECT-TYPE
SYNTAX Dot1dTpPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of information for each port of a transparent
bridge."
INDEX { dot1dTpPort }
::= { dot1dTpPortTable 1 }
Dot1dTpPortEntry ::=
SEQUENCE {
dot1dTpPort
Integer32,
dot1dTpPortMaxInfo
Integer32,
dot1dTpPortInFrames
Counter32,
dot1dTpPortOutFrames
Counter32,
dot1dTpPortInDiscards
Counter32
}
dot1dTpPort OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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-TYPE
SYNTAX Integer32
UNITS "bytes"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum size of the INFO (non-MAC) field that
this port will receive or transmit."
::= { dot1dTpPortEntry 2 }
dot1dTpPortInFrames OBJECT-TYPE
SYNTAX Counter32
UNITS "frames"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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, including
bridge management frames."
REFERENCE
"IEEE 802.1D-1998: clause 14.6.1.1.3"
::= { dot1dTpPortEntry 3 }
dot1dTpPortOutFrames OBJECT-TYPE
SYNTAX Counter32
UNITS "frames"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"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, including
bridge management frames."
REFERENCE
"IEEE 802.1D-1998: clause 14.6.1.1.3"
::= { dot1dTpPortEntry 4 }
dot1dTpPortInDiscards OBJECT-TYPE
SYNTAX Counter32
UNITS "frames"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Count of received valid frames that were discarded
(i.e., filtered) by the Forwarding Process."
REFERENCE
"IEEE 802.1D-1998: clause 14.6.1.1.3"
::= { dot1dTpPortEntry 5 }
-- ---------------------------------------------------------- --
-- The Static (Destination-Address Filtering) Database
-- ---------------------------------------------------------- --
-- Implementation of this subtree is optional.
-- ---------------------------------------------------------- --
dot1dStaticTable OBJECT-TYPE