| ifIndex |
.1.3.6.1.2.1.2.2.1.1 |
|
A unique value, greater than zero, for each interface. It
is recommended that values are assigned contiguously
starting from 1. The value for each interface sub-layer
must remain constant at least from one re-initialization of
the entity's network management system to the next re-
initialization.
|
| ifDescr |
.1.3.6.1.2.1.2.2.1.2 |
|
A textual string containing information about the
interface. This string should include the name of the
manufacturer, the product name and the version of the
interface hardware/software.
|
| ifType |
.1.3.6.1.2.1.2.2.1.3 |
|
The type of interface. Additional values for ifType are
assigned by the Internet Assigned Numbers Authority (IANA),
through updating the syntax of the IANAifType textual
convention.
|
| ifMtu |
.1.3.6.1.2.1.2.2.1.4 |
|
The size of the largest packet which can be sent/received
on the interface, specified in octets. For interfaces that
are used for transmitting network datagrams, this is the
size of the largest network datagram that can be sent on the
interface.
|
| ifSpeed |
.1.3.6.1.2.1.2.2.1.5 |
|
An estimate of the interface's current bandwidth in bits
per second. For interfaces which do not vary in bandwidth
or for those where no accurate estimation can be made, this
object should contain the nominal bandwidth. If the
bandwidth of the interface is greater than the maximum value
reportable by this object then this object should report its
maximum value (4,294,967,295) and ifHighSpeed must be used
to report the interace's speed. For a sub-layer which has
no concept of bandwidth, this object should be zero.
|
| ifPhysAddress |
.1.3.6.1.2.1.2.2.1.6 |
|
The interface's address at its protocol sub-layer. For
example, for an 802.x interface, this object normally
contains a MAC address. The interface's media-specific MIB
must define the bit and byte ordering and the format of the
value of this object. For interfaces which do not have such
an address (e.g., a serial line), this object should contain
an octet string of zero length.
|
| ifAdminStatus |
.1.3.6.1.2.1.2.2.1.7 |
|
The desired state of the interface. The testing(3) state
indicates that no operational packets can be passed. When a
managed system initializes, all interfaces start with
ifAdminStatus in the down(2) state. As a result of either
explicit management action or per configuration information
retained by the managed system, ifAdminStatus is then
changed to either the up(1) or testing(3) states (or remains
in the down(2) state).
|
| ifOperStatus |
.1.3.6.1.2.1.2.2.1.8 |
|
The current operational state of the interface. The
testing(3) state indicates that no operational packets can
be passed. If ifAdminStatus is down(2) then ifOperStatus
should be down(2). If ifAdminStatus is changed to up(1)
then ifOperStatus should change to up(1) if the interface is
ready to transmit and receive network traffic; it should
change to dormant(5) if the interface is waiting for
external actions (such as a serial line waiting for an
incoming connection); it should remain in the down(2) state
if and only if there is a fault that prevents it from going
to the up(1) state; it should remain in the notPresent(6)
state if the interface has missing (typically, hardware)
components.
|
| ifLastChange |
.1.3.6.1.2.1.2.2.1.9 |
|
The value of sysUpTime at the time the interface entered
its current operational state. If the current state was
entered prior to the last re-initialization of the local
network management subsystem, then this object contains a
zero value.
|
| ifInOctets |
.1.3.6.1.2.1.2.2.1.10 |
|
The total number of octets received on the interface,
including framing characters.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifInUcastPkts |
.1.3.6.1.2.1.2.2.1.11 |
|
The number of packets, delivered by this sub-layer to a
higher (sub-)layer, which were not addressed to a multicast
or broadcast address at this sub-layer.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifInNUcastPkts |
.1.3.6.1.2.1.2.2.1.12 |
|
The number of packets, delivered by this sub-layer to a
higher (sub-)layer, which were addressed to a multicast or
broadcast address at this sub-layer.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
This object is deprecated in favour of ifInMulticastPkts and
ifInBroadcastPkts.
|
| ifInDiscards |
.1.3.6.1.2.1.2.2.1.13 |
|
The number of inbound packets which were chosen to be
discarded even though no errors had been detected to prevent
their being deliverable to a higher-layer protocol. One
possible reason for discarding such a packet could be to
free up buffer space.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifInErrors |
.1.3.6.1.2.1.2.2.1.14 |
|
For packet-oriented interfaces, the number of inbound
packets that contained errors preventing them from being
deliverable to a higher-layer protocol. For character-
oriented or fixed-length interfaces, the number of inbound
transmission units that contained errors preventing them
from being deliverable to a higher-layer protocol.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifInUnknownProtos |
.1.3.6.1.2.1.2.2.1.15 |
|
For packet-oriented interfaces, the number of packets
received via the interface which were discarded because of
an unknown or unsupported protocol. For character-oriented
or fixed-length interfaces that support protocol
multiplexing the number of transmission units received via
the interface which were discarded because of an unknown or
unsupported protocol. For any interface that does not
support protocol multiplexing, this counter will always be
0.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifOutOctets |
.1.3.6.1.2.1.2.2.1.16 |
|
The total number of octets transmitted out of the
interface, including framing characters.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifOutUcastPkts |
.1.3.6.1.2.1.2.2.1.17 |
|
The total number of packets that higher-level protocols
requested be transmitted, and which were not addressed to a
multicast or broadcast address at this sub-layer, including
those that were discarded or not sent.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifOutNUcastPkts |
.1.3.6.1.2.1.2.2.1.18 |
|
The total number of packets that higher-level protocols
requested be transmitted, and which were addressed to a
multicast or broadcast address at this sub-layer, including
those that were discarded or not sent.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
This object is deprecated in favour of ifOutMulticastPkts
and ifOutBroadcastPkts.
|
| ifOutDiscards |
.1.3.6.1.2.1.2.2.1.19 |
|
The number of outbound packets which were chosen to be
discarded even though no errors had been detected to prevent
their being transmitted. One possible reason for discarding
such a packet could be to free up buffer space.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifOutErrors |
.1.3.6.1.2.1.2.2.1.20 |
|
For packet-oriented interfaces, the number of outbound
packets that could not be transmitted because of errors.
For character-oriented or fixed-length interfaces, the
number of outbound transmission units that could not be
transmitted because of errors.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifOutQLen |
.1.3.6.1.2.1.2.2.1.21 |
|
The length of the output packet queue (in packets).
|
| ifSpecific |
.1.3.6.1.2.1.2.2.1.22 |
|
A reference to MIB definitions specific to the particular
media being used to realize the interface. It is
recommended that this value point to an instance of a MIB
object in the media-specific MIB, i.e., that this object
have the semantics associated with the InstancePointer
textual convention defined in RFC 2579. In fact, it is
recommended that the media-specific MIB specify what value
ifSpecific should/can take for values of ifType. If no MIB
definitions specific to the particular media are available,
the value should be set to the OBJECT IDENTIFIER { 0 0 }.
|
| ifName |
.1.3.6.1.2.1.31.1.1.1.1 |
|
The textual name of the interface. The value of this
object should be the name of the interface as assigned by
the local device and should be suitable for use in commands
entered at the device's `console'. This might be a text
name, such as `le0' or a simple port number, such as `1',
depending on the interface naming syntax of the device. If
several entries in the ifTable together represent a single
interface as named by the device, then each will have the
same value of ifName. Note that for an agent which responds
to SNMP queries concerning an interface on some other
(proxied) device, then the value of ifName for such an
interface is the proxied device's local name for it.
If there is no local name, or this object is otherwise not
applicable, then this object contains a zero-length string.
|
| ifInMulticastPkts |
.1.3.6.1.2.1.31.1.1.1.2 |
|
The number of packets, delivered by this sub-layer to a
higher (sub-)layer, which were addressed to a multicast
address at this sub-layer. For a MAC layer protocol, this
includes both Group and Functional addresses.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifInBroadcastPkts |
.1.3.6.1.2.1.31.1.1.1.3 |
|
The number of packets, delivered by this sub-layer to a
higher (sub-)layer, which were addressed to a broadcast
address at this sub-layer.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifOutMulticastPkts |
.1.3.6.1.2.1.31.1.1.1.4 |
|
The total number of packets that higher-level protocols
requested be transmitted, and which were addressed to a
multicast address at this sub-layer, including those that
were discarded or not sent. For a MAC layer protocol, this
includes both Group and Functional addresses.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifOutBroadcastPkts |
.1.3.6.1.2.1.31.1.1.1.5 |
|
The total number of packets that higher-level protocols
requested be transmitted, and which were addressed to a
broadcast address at this sub-layer, including those that
were discarded or not sent.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifHCInOctets |
.1.3.6.1.2.1.31.1.1.1.6 |
|
The total number of octets received on the interface,
including framing characters. This object is a 64-bit
version of ifInOctets.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifHCInUcastPkts |
.1.3.6.1.2.1.31.1.1.1.7 |
|
The number of packets, delivered by this sub-layer to a
higher (sub-)layer, which were not addressed to a multicast
or broadcast address at this sub-layer. This object is a
64-bit version of ifInUcastPkts.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifHCInMulticastPkts |
.1.3.6.1.2.1.31.1.1.1.8 |
|
The number of packets, delivered by this sub-layer to a
higher (sub-)layer, which were addressed to a multicast
address at this sub-layer. For a MAC layer protocol, this
includes both Group and Functional addresses. This object
is a 64-bit version of ifInMulticastPkts.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifHCInBroadcastPkts |
.1.3.6.1.2.1.31.1.1.1.9 |
|
The number of packets, delivered by this sub-layer to a
higher (sub-)layer, which were addressed to a broadcast
address at this sub-layer. This object is a 64-bit version
of ifInBroadcastPkts.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifHCOutOctets |
.1.3.6.1.2.1.31.1.1.1.10 |
|
The total number of octets transmitted out of the
interface, including framing characters. This object is a
64-bit version of ifOutOctets.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifHCOutUcastPkts |
.1.3.6.1.2.1.31.1.1.1.11 |
|
The total number of packets that higher-level protocols
requested be transmitted, and which were not addressed to a
multicast or broadcast address at this sub-layer, including
those that were discarded or not sent. This object is a
64-bit version of ifOutUcastPkts.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifHCOutMulticastPkts |
.1.3.6.1.2.1.31.1.1.1.12 |
|
The total number of packets that higher-level protocols
requested be transmitted, and which were addressed to a
multicast address at this sub-layer, including those that
were discarded or not sent. For a MAC layer protocol, this
includes both Group and Functional addresses. This object
is a 64-bit version of ifOutMulticastPkts.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifHCOutBroadcastPkts |
.1.3.6.1.2.1.31.1.1.1.13 |
|
The total number of packets that higher-level protocols
requested be transmitted, and which were addressed to a
broadcast address at this sub-layer, including those that
were discarded or not sent. This object is a 64-bit version
of ifOutBroadcastPkts.
Discontinuities in the value of this counter can occur at
re-initialization of the management system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime.
|
| ifLinkUpDownTrapEnable |
.1.3.6.1.2.1.31.1.1.1.14 |
|
Indicates whether linkUp/linkDown traps should be generated
for this interface.
By default, this object should have the value enabled(1) for
interfaces which do not operate on 'top' of any other
interface (as defined in the ifStackTable), and disabled(2)
otherwise.
|
| ifHighSpeed |
.1.3.6.1.2.1.31.1.1.1.15 |
|
An estimate of the interface's current bandwidth in units
of 1,000,000 bits per second. If this object reports a
value of `n' then the speed of the interface is somewhere in
the range of `n-500,000' to `n+499,999'. For interfaces
which do not vary in bandwidth or for those where no
accurate estimation can be made, this object should contain
the nominal bandwidth. For a sub-layer which has no concept
of bandwidth, this object should be zero.
|
| ifPromiscuousMode |
.1.3.6.1.2.1.31.1.1.1.16 |
|
This object has a value of false(2) if this interface only
accepts packets/frames that are addressed to this station.
This object has a value of true(1) when the station accepts
all packets/frames transmitted on the media. The value
true(1) is only legal on certain types of media. If legal,
setting this object to a value of true(1) may require the
interface to be reset before becoming effective.
The value of ifPromiscuousMode does not affect the reception
of broadcast and multicast packets/frames by the interface.
|
| ifConnectorPresent |
.1.3.6.1.2.1.31.1.1.1.17 |
|
This object has the value 'true(1)' if the interface
sublayer has a physical connector and the value 'false(2)'
otherwise.
|
| ifAlias |
.1.3.6.1.2.1.31.1.1.1.18 |
|
This object is an 'alias' name for the interface as
specified by a network manager, and provides a non-volatile
'handle' for the interface.
On the first instantiation of an interface, the value of
ifAlias associated with that interface is the zero-length
string. As and when a value is written into an instance of
ifAlias through a network management set operation, then the
agent must retain the supplied value in the ifAlias instance
associated with the same interface for as long as that
interface remains instantiated, including across all re-
initializations/reboots of the network management system,
including those which result in a change of the interface's
ifIndex value.
An example of the value which a network manager might store
in this object for a WAN interface is the (Telco's) circuit
number/identifier of the interface.
Some agents may support write-access only for interfaces
having particular values of ifType. An agent which supports
write access to this object is required to keep the value in
non-volatile storage, but it may limit the length of new
values depending on how much storage is already occupied by
the current values for other interfaces.
|
| ifCounterDiscontinuityTime |
.1.3.6.1.2.1.31.1.1.1.19 |
|
The value of sysUpTime on the most recent occasion at which
any one or more of this interface's counters suffered a
discontinuity. The relevant counters are the specific
instances associated with this interface of any Counter32 or
Counter64 object contained in the ifTable or ifXTable. If
no such discontinuities have occurred since the last re-
initialization of the local management subsystem, then this
object contains a zero value.
|
| ifStackHigherLayer |
.1.3.6.1.2.1.31.1.2.1.1 |
|
The value of ifIndex corresponding to the higher sub-layer
of the relationship, i.e., the sub-layer which runs on 'top'
of the sub-layer identified by the corresponding instance of
ifStackLowerLayer. If there is no higher sub-layer (below
the internetwork layer), then this object has the value 0.
|
| ifStackLowerLayer |
.1.3.6.1.2.1.31.1.2.1.2 |
|
The value of ifIndex corresponding to the lower sub-layer
of the relationship, i.e., the sub-layer which runs 'below'
the sub-layer identified by the corresponding instance of
ifStackHigherLayer. If there is no lower sub-layer, then
this object has the value 0.
|
| ifStackStatus |
.1.3.6.1.2.1.31.1.2.1.3 |
|
The status of the relationship between two sub-layers.
Changing the value of this object from 'active' to
'notInService' or 'destroy' will likely have consequences up
and down the interface stack. Thus, write access to this
object is likely to be inappropriate for some types of
interfaces, and many implementations will choose not to
support write-access for any type of interface.
|
| ifRcvAddressAddress |
.1.3.6.1.2.1.31.1.4.1.1 |
|
An address for which the system will accept packets/frames
on this entry's interface.
|
| ifRcvAddressStatus |
.1.3.6.1.2.1.31.1.4.1.2 |
|
This object is used to create and delete rows in the
ifRcvAddressTable.
|
| ifRcvAddressType |
.1.3.6.1.2.1.31.1.4.1.3 |
|
This object has the value nonVolatile(3) for those entries
in the table which are valid and will not be deleted by the
next restart of the managed system. Entries having the
value volatile(2) are valid and exist, but have not been
saved, so that will not exist after the next restart of the
managed system. Entries having the value other(1) are valid
and exist but are not classified as to whether they will
continue to exist after the next restart.
|
| ifTestId |
.1.3.6.1.2.1.31.1.3.1.1 |
|
This object identifies the current invocation of the
interface's test.
|
| ifTestStatus |
.1.3.6.1.2.1.31.1.3.1.2 |
|
This object indicates whether or not some manager currently
has the necessary 'ownership' required to invoke a test on
this interface. A write to this object is only successful
when it changes its value from 'notInUse(1)' to 'inUse(2)'.
After completion of a test, the agent resets the value back
to 'notInUse(1)'.
|
| ifTestType |
.1.3.6.1.2.1.31.1.3.1.3 |
|
A control variable used to start and stop operator-
initiated interface tests. Most OBJECT IDENTIFIER values
assigned to tests are defined elsewhere, in association with
specific types of interface. However, this document assigns
a value for a full-duplex loopback test, and defines the
special meanings of the subject identifier:
noTest OBJECT IDENTIFIER ::= { 0 0 }
When the value noTest is written to this object, no action
is taken unless a test is in progress, in which case the
test is aborted. Writing any other value to this object is
only valid when no test is currently in progress, in which
case the indicated test is initiated.
When read, this object always returns the most recent value
that ifTestType was set to. If it has not been set since
the last initialization of the network management subsystem
on the agent, a value of noTest is returned.
|
| ifTestResult |
.1.3.6.1.2.1.31.1.3.1.4 |
|
This object contains the result of the most recently
requested test, or the value none(1) if no tests have been
requested since the last reset. Note that this facility
provides no provision for saving the results of one test
when starting another, as could be required if used by
multiple managers concurrently.
|
| ifTestCode |
.1.3.6.1.2.1.31.1.3.1.5 |
|
This object contains a code which contains more specific
information on the test result, for example an error-code
after a failed test. Error codes and other values this
object may take are specific to the type of interface and/or
test. The value may have the semantics of either the
AutonomousType or InstancePointer textual conventions as
defined in RFC 2579. The identifier:
testCodeUnknown OBJECT IDENTIFIER ::= { 0 0 }
is defined for use if no additional result code is
available.
|
| ifTestOwner |
.1.3.6.1.2.1.31.1.3.1.6 |
|
The entity which currently has the 'ownership' required to
invoke a test on this interface.
|
