| OID symbolic | OID numeric | Type | Access | Description |
|---|
| stackConfigGroup | 1.3.6.1.4.1.43.10.34.1 | | | |
| INT prConStackFwdingMode | 1.3.6.1.4.1.43.10.34.1.1 | INTEGER | read-write | This object controls whether cut-thru is enabled on the
stack. Enabling cut-thru can help to minimise the delay
experienced by packets before they are forwarded to their
destination. Setting cut-thru to 'fastForward' causes frame
forwarding to begin as soon as 32 bytes of the frame have been
received. Setting it to 'fragmentFree' causes frame forwarding
to begin when 64 bytes have been received. This is slower, but
eliminates the risk of forwarding an illegally short frame to
the destination port, however a valid length frame might still
be forwarded even though it had a CRC error. Setting this
object to 'storeAndForward' disables cut-thru completely, and
frames will not be forwarded until they have been received in
their entirety.
When the mode is set to intelligent, the effective switching
mode is set initially to fast forward. The switch then
monitors the total error rate of frames received on each port,
and if it exceeds 20 error frames a second it changes the
effective mode for the port to store and forward. If the error
rate then drops to zero the effective mode is restored to fast
forward.
Whatever forwarding mode is selected, cut-thru cannot operate
if the destination port is currently involved in 'cut-thru'
from another port. In this case the device will process the
frame in store and forward mode. |
| INT prConStackPaceMode | 1.3.6.1.4.1.43.10.34.1.2 | INTEGER | read-write | This object specifies the type of backoff algorithm used on
the units in the stack. Any port can use the standard ethernet
algorithm or, for PACE applications, it can be set into low
latency mode. In this mode, the backoff algorithm is optimised
to minimise the possibility of collisions. The value of this
object defines the setting that those ports will use which
have prConPortPaceMode set to useDefault(2).
PACE mode can be set for the whole stack or for individual
ports. When a unit is initialised to factory defaults,
prconPortPaceMode for every port is set to useDefault(2), and
the actual setting for the port is decided by the value of
this object. The manager has the choice, therefore, of varying
the mode for every port in the stack, or for individual ports
only. |
| INT prConStackVLANConfigMode | 1.3.6.1.4.1.43.10.34.1.3 | INTEGER | read-write | This object specifies the VLAN mode to be used. Setting it to
portMode(2) requires the user to configure each port's VLAN
membership individually, whereas autoSelect(3) causes it to
acquire its membership from the VLAN Server. The value of this
object defines the setting that those ports will use which
have prConPortVLANConfigMode set to useDefault(2).
VLAN mode can be set for the whole stack or for individual
ports. When a unit is initialised to factory defaults,
prconPortVLANConfigMode for every port is set to
useDefault(2), and the actual setting for the port is decided
by the value of this object. The manager has the choice,
therefore, of varying the mode for every port in the stack, or
for individual ports only. |
| INT prConStackRAPStudyPort | 1.3.6.1.4.1.43.10.34.1.4 | INTEGER | read-write | This determines the ifIndex of the port a user wishes to
monitor on the copy port. Monitoring causes all data from the
study port to be copied to the copy port. The port is
specified using its ifIndex because that uniquely identifies a
single port in the stack. |
| INT prConStackRAPCopyPort | 1.3.6.1.4.1.43.10.34.1.5 | INTEGER | read-write | This is the value of ifIndex specifying the port to which
data will be copied (mirrored), and must be set to a valid
value, along with the study port, before monitoring can be
enabled. |
| INT prConStackRAPEnable | 1.3.6.1.4.1.43.10.34.1.6 | INTEGER | read-write | This object controls the Roving Analysis Port (RAP) feature
in conjunction with prConStackRAPStudyPort and
prConStackRAPCopyPort. The RAP feature allows all frames sent
and received on the study port to be copied to the copy port,
where they can be observed. Setting this object to on(2) will
enable monitoring. To succeed both prConStackRAPStudyPort and
prConStackRAPCopyPort must have been set to the ifIndex values
of suitable ports, and if either are invalid this operation
will fail. |
| INT prConStackBridgeMode | 1.3.6.1.4.1.43.10.34.1.7 | INTEGER | read-write | The value of this object determines whether the switch is to
operate as a single bridge or as a bridge per VLAN (the
default). In multiple bridge mode the switch maintains a
separate filtering database for each VLAN, whereas in single
bridge mode it uses a single database for them all. Thus in
multiple bridge mode the MAC address of a station can be
learnt on more than one port provided they are in separate
VLANs, while in single bridge mode the switch makes just one
entry for each address. Multiple bridge mode is useful in that
separate VLANs may be joined by a bridge external to the
switch, whereas in single bridge mode VLANs may only be
connected by routers. Not all switches will support both
modes, and any attempt to set the mode to an unsupported value
will be rejected. |
| switchConfigGroup | 1.3.6.1.4.1.43.10.34.2 | | | |
| prConfigPortTable | 1.3.6.1.4.1.43.10.34.2.1 | | not-accessible | Table providing configuration information about a port on a
Switch unit. |
| prConfigPortEntry | 1.3.6.1.4.1.43.10.34.2.1.1 | | not-accessible | Configuration options for a single port. |
| INT prConPortVLANConfigMode | 1.3.6.1.4.1.43.10.34.2.1.1.1 | INTEGER | read-write | This object specifies the VLAN mode to be used. Setting it to
portMode(3) requires the user to configure the port's VLAN
membership explicitly, whereas autoSelect(4) causes it to
acquire its membership from the VLAN Server.
VLAN mode can be set for the whole stack or for individual
ports. When a unit is initialised to factory defaults,
prConPortVLANConfigMode for every port is set to
useDefault(2), and the actual setting for the port is decided
by the value of prConStackVLANConfigMode. The other values of
this object allow the setting to be varied for the individual
port. |
| INT prConPortIFM | 1.3.6.1.4.1.43.10.34.2.1.1.2 | INTEGER | read-write | This object controls Intelligent Flow Management for the
port, which specifies what action the port takes whenever it
is unable to receive a packet because its buffers are full.
When set to off(1), the packet is dropped immediately. If it
is set to any of the values maxJams6(2) to maxJams13(10), a
jam signal is transmitted to the segment attached to the port
to force a collision so that the originator will stop and
retransmit the frame. This will be repeated a maximum of 6 to
13 times depending on the setting. If the port is then still
unable to receive the packet it is dropped. Intelligent Flow
Management should be disabled on ports which are connected to
repeater segments.
Intelligent flow management only functions when a port is
operating in half duplex, either as a result of
auto-negotiation, or by management action. |
| INT prConPortDiscardOnTx | 1.3.6.1.4.1.43.10.34.2.1.1.3 | INTEGER | read-write | This object controls whether the 'Discard-on-transmit'
feature is enabled for frames originating at this port. If set
to on(3), the unit will discard frames destined for any other
port if that port's transmit buffers are full. If this
attribute is set to off(2), a frame will be held until that
port has space available for the frame. |
| INT prConPortPaceMode | 1.3.6.1.4.1.43.10.34.2.1.1.4 | INTEGER | read-write | This object specifies the type of backoff algorithm used on
the port. A port can use the standard ethernet algorithm or,
for PACE applications, it can be set to low latency mode. In
this mode, the backoff algorithm is optimised to minimise the
possibility of collisions.
PACE mode can be set for the whole stack or for individual
ports. When a unit is initialised to factory defaults this
object is set to useDefault(2) for every port, and the actual
setting for the port is decided by the value of
prConStackPaceMode. The manager has the choice, therefore, of
varying the mode for every port in the stack, or for
individual ports only. |
| INT prConPortStpFastStart | 1.3.6.1.4.1.43.10.34.2.1.1.5 | INTEGER | read-write | This object specifies whether a switch port will go to the
forwarding state immediately if spanning tree is turned on.
When this object is set to on(2), the normal intermediate
startup states of listening and learning are skipped and the
port is allowed to enter the forwarding spanning tree state
immediately. This is to allow switch ports that are directly
connected to just one endstation to be immediately available
when the link is detected or the switch powers up.
Note that this object must be set of off(1) for all switch
ports that are connected to ethernet segments or other
switches, routers or bridges.
The default state for all ports is off(1). |
| INT prConPortFlowCntlStatus | 1.3.6.1.4.1.43.10.34.2.1.1.6 | INTEGER | read-only | This object represents the operational full duplex flow
control state of the port, as determined by either (1) the
result of auto-negotiation, or (2) if auto-negotiation is not
enabled for this port, by the value of the object
prConPortFlowCntlDefaultStatus. In the latter case a set to
prConPortFlowCntlDefaultStatus will force the port into the
new operating mode.
If the port is operating in half duplex, the value of this
object is notApplicable(3). |
| INT prConPortFlowCntlDefaultStatus | 1.3.6.1.4.1.43.10.34.2.1.1.7 | INTEGER | read-write | This object represents the administratively-configured full
duplex flow control status of the port. If auto-negotiation is
not enabled for this port, the value of this object determines
the operational full duplex flow control status, and in this
case a set to this object will force the port into the
specified state.
If auto-negotiation is enabled for this port, the operational
status of the port is determined by auto-negotiation and
indicated by the value of the prConPortFlowCntlStatus object.
The value of this object denotes the state to which the port
will automatically revert should auto-negotiation be disabled.
The value of this object is ignored if the port is operating
in half duplex mode. |
