| cwnDistributionMethod |
.1.3.6.1.4.1.9.9.223.1.1.1 |
|
The method used to distribute network clock for the device.
When the mode of operation is 'ncdp', this device participates
in NCDP protocol. A single 'master' clock source will be
identified as the clock source for this network as a result.
The tables 'cwnAtmSourceTable' and 'cwnAtmInterfaceTable'
are used in this mode.
When the mode of operation is 'manual', the network clock source
is statically configured in this device.
The table 'cwnManualSourceTable' is used in this mode.
|
| cwnNodeStratum |
.1.3.6.1.4.1.9.9.223.1.1.2 |
|
This variable contains the stratum level of the node.
This object is only used if the distribution method is 'ncdp'.
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| cwnMaxDiameter |
.1.3.6.1.4.1.9.9.223.1.1.3 |
|
The maximum possible height of a network clock distribution
tree in the network.
This variable must be configured with the same value for
all devices participating in NCDP within the network.
This object is only used if the distribution method is 'ncdp'.
|
| cwnMessageInterval |
.1.3.6.1.4.1.9.9.223.1.1.4 |
|
The interval at which NCDP configuration PDUs ('Hellos') are to be
generated.
The message interval directly affects the convergence time of
the NCDP algorithm. Convergence time is equal to
the max network diameter * message interval +
transmission delays +
the time a configuration PDU is spent being processed
in each device.
Thus if transmission delays and processing delays are
both close to 0, the convergence time is approximately
( max network diameter * message interval ) milliseconds.
This object is only used if the distribution method is 'ncdp'.
|
| cwnHoldTime |
.1.3.6.1.4.1.9.9.223.1.1.5 |
|
The minimum delay between the transmission of two consecutive
NCDP configuration PDUs on an interface.
The value of this object should normally be set to match the
value of cwnMessageInterval. If the value of this object
is higher than the value of cwnMessageInterval, NCDP
configuration PDUs will end up being propagated at the
rate specified by the value of this object instead.
This object is only used if the distribution method is 'ncdp'.
|
| cwnChangeReason |
.1.3.6.1.4.1.9.9.223.1.1.6 |
|
The reason for the most recent change of a source of
network clock, as indicated by the change in the value
of 'ciscoWanChangeTimeStamp'.
'none' indicates that the source of network clock
has not changed.
'lossOfLock' indicates that the clock source was
changed because the network clocking hardware lost
lock on the previous network clock source.
'lossOfActivity' indicates that the clock source was changed
because the network clocking hardware detected a loss of
activity on the previous network clock source.
'ncdpRestructure' indicates that the NCDP entity has changed
the clock source as a result of a network-wide network clock
distribution tree restructuring process.
When the reason for a clock switchover is none of the
above, the value of this object is 'other'.
|
| cwnChangeTimeStamp |
.1.3.6.1.4.1.9.9.223.1.1.7 |
|
The value of sysUpTime when the most recent change of a source
of network clock occurred.
A value of 0 indicates that no such event has occurred since
the instantiation of this object.
|
| cwnRootClockSource |
.1.3.6.1.4.1.9.9.223.1.1.8 |
|
The 'index' of the network clock source that is
actively supplying network clock within the device.
When the value of this variable is used as an index into the
'cwnAtmSourceTable' and the indicated clock source
has 'cwnAtmSourceBestClockSource' with value 'true', then the
indicated clock source is the root of some clock distribution tree.
|
| cwnClockSourceEntry |
.1.3.6.1.4.1.9.9.223.1.2.1.1 |
|
An entry in this table contains an available clock source
on the device.
A source of network clock for the device may be an oscillator
local to the device or a Building Integrated Timing Supply (BITS)
port or an interface that supports synchronous clock recovery.
An index is assigned by the device to uniquely identify each of
the source of networking clock on the managed system.
A description is associated with each clock source.
This description gives detail information of this clock source.
The management station should poll this table to obtain
these 'cwnClockSourceIndex' and use these indexes
to configure clock source in
'cwnManualSourceTable' or 'cwnAtmSourceTable'.
|
| cwnManualSourceEntry |
.1.3.6.1.4.1.9.9.223.1.3.1.1 |
|
When the value of cwnDistributionMethod is 'manual',
the managed system uses this table to select a source of
network clock for the managed system from the entries in
'cwnClockSourceTable'.
The management system uses 'cwnClockSourceIndex'
to configure the associated clock source to be a primary,
secondary or default clock source.
A source of network clock for the device may be an oscillator
local to the device or a Building Integrated Timing Supply (BITS)
port or an interface that supports synchronous clock recovery.
When the managed system initializes it creates a row for the
device's default source of network clock, (the entry having
'cwnManualSourcePriority' with value 'default').
Only read operations is allowed on the columnar objects in this row.
Other rows are created or destroyed by a management station or
through the device's local management interface when a source
of network clock is configured or removed.
A row is not made active until a valid value for
'cwnManualSourceIndex' is supplied.
A management station may perform a write operation on any
columnar object while the row is active or not in service.
|
| cwnAtmSourceEntry |
.1.3.6.1.4.1.9.9.223.1.4.1.1 |
|
Network clock status for sources of network
clock identified by 'cwnClockSourceIndex' and used by
the managed system when the value of
'cwnDistributionMethod' is 'ncdp'.
The managed device selects one entry in this table to
advertise as the best available clock source for the device.
Cooperating NCDP protocol entities select the best available
clock source among those advertised within the cooperating
group and build a clock distribution tree rooted at that clock
source. When the value of 'cwnRootClockSource' is used
as an index into this table and the indicated clock source has
'cwnAtmSourceBestClockSource' with value 'true' then the indicated
clock source is the root of some clock distribution tree. If
only one such root exists on all participating devices in the
network, then it is the root of a network wide clock
distribution tree.
When the managed system initializes it creates a row for the
device's default source of network clock. This row cannot be
destroyed by a management station. Within this row a write
operation is only allowed on the 'cwnAtmSourcePriority' object.
The status of this row is always active. The default source
can always be found by issuing a read operation on the row within
'cwnManualSourceTable' that has 'default' as the value
of 'cwnManualSourcePriority'.
The other rows are created or destroyed by a management station or
through the device's local management interface when a source
of network clock is configured or removed.
The values of 'cwnAtmSourcePriority', 'cwnAtmSourceStratum' and
'cwnAtmSourcePRSReference' collectively describe a source of network
clock. They are the three components of a vector used as an
input to the NCDP algorithm to make clock source selection
decisions.
|
| cwnAtmInterfaceEntry |
.1.3.6.1.4.1.9.9.223.1.5.1.1 |
|
An entry in this table contains the status of NCDP
on an ATM Netowrk-to-Network (NNI) interface.
A row in this table is created by the managed system and
disappears when the associated entity disappears.
When a row is created all of the row objects are instantiated.
Each entry identified by 'ifIndex' is of ifType 'atmvirtual(149)'.
|
| cwnClockSourceIndex |
.1.3.6.1.4.1.9.9.223.1.2.1.1.1 |
|
An 'index' assigned by the device which uniquely
identifies an available clock source on the device.
|
| cwnClockSourceDesc |
.1.3.6.1.4.1.9.9.223.1.2.1.1.2 |
|
A description of the clock source associated with this entry.
The description contains port/type information of this
clock source.
The format of this entry is implementation specific.
|
| cwnInterfaceIndex |
.1.3.6.1.4.1.9.9.223.1.2.1.1.3 |
|
If this variable has a non-zero value, this is
the 'ifIndex' associated with this entry.
The 'ifIndex' identifies an ATM Virtual Interface
(ifType 'atmVirtual(149)').
If this variable has a value of 'zero', this entry
is not associated with an 'ifIndex' and its type
is identified by 'cwnOtherClockSource'.
|
| cwnOtherClockSource |
.1.3.6.1.4.1.9.9.223.1.2.1.1.4 |
|
This variable identifies the type of a clock source that
does not have an 'ifIndex' associated.
This value is 'none(1) if 'cwnInterfaceIndex'
contains a non-zero value.
The value 'internalOscillator(1) indicates a clock source
is an oscillator local to the device.
The value 'bitsClockE1(2) indicates a Building Integrated
Timing Supply (BITS) clock source on an E1 port.
The value 'bitsClockT1(3) indicates a BITS clock source
on a T1 port.
|
| cwnManualSourcePriority |
.1.3.6.1.4.1.9.9.223.1.3.1.1.1 |
|
A value used to configure an available network clock source to be
primary, secondary or default manual clock source.
|
| cwnManualSourceIndex |
.1.3.6.1.4.1.9.9.223.1.3.1.1.2 |
|
An 'index' value used to identify the primary,
secondary ,or default manual clock source.
|
| cwnManualClockHealth |
.1.3.6.1.4.1.9.9.223.1.3.1.1.3 |
|
The health of the clock source.
|
| cwnManualRowStatus |
.1.3.6.1.4.1.9.9.223.1.3.1.1.4 |
|
The status of this conceptual row.
|
| cwnAtmSourceBestClockSource |
.1.3.6.1.4.1.9.9.223.1.4.1.1.1 |
|
An indication of whether this is the best clock source being
advertised.
|
| cwnAtmSourcePriority |
.1.3.6.1.4.1.9.9.223.1.4.1.1.2 |
|
The network-wide priority of this clock source if configured
as a source of network clock for NCDP. The highest priority
clock source is that clock source having the lowest positive
numeric value. The clock source with the highest priority is
selected as the root of the clock distribution tree by the NCDP
algorithm. If more that one clock source is configured with
with the same priority the NCDP algorithm uses the value
'cwnAtmSourceStratum' as a tiebreaker.
|
| cwnAtmSourceStratum |
.1.3.6.1.4.1.9.9.223.1.4.1.1.3 |
|
The stratum level associated with this clock source if
configured as a source of network clock for NCDP.
If the value of this object is used as a tiebreaker
, the lower of the given values is the winner.
If the values are the same, the value of
'cwnAtmSourcePRSReference' is used as a tiebreaker by the
NCDP algorithm.
|
| cwnAtmSourcePRSReference |
.1.3.6.1.4.1.9.9.223.1.4.1.1.4 |
|
An value that identifies the Primary Reference Source that
the network clock available from this source is traceable to
if configured as a source of network clock for NCDP.
The object takes the value 'internal' when the PRS for this
source is an onboard oscillator local to the device. For any
other cases the value 'external' is used.
If the value of this object is used as a tiebreaker by the
algorithm,'external' wins over 'internal'.
All 'external' sources of network clock are assumed to be
traceable to the same PRS by the NCDP protocol entity.
|
| cwnAtmSourceClockHealth |
.1.3.6.1.4.1.9.9.223.1.4.1.1.5 |
|
The health of the clock source.
|
| cwnAtmSourceRowStatus |
.1.3.6.1.4.1.9.9.223.1.4.1.1.6 |
|
The status of this conceptual row.
|
| cwnAtmInterfaceEnable |
.1.3.6.1.4.1.9.9.223.1.5.1.1.1 |
|
An indication of whether NCDP is presently running on an
ATM Network-to-Network interface. When NCDP is enabled for
an interface, the interface is an active member of the clock
distribution topology.
After this object is instantiated by the agent the
managed system initializes the value of this object to 'true'.
By default, all Network-to-Network interfaces participate in
NCDP until it's disabled by setting the value of this object
to 'false'.
|
| cwnAtmInterfaceAdminWeight |
.1.3.6.1.4.1.9.9.223.1.5.1.1.2 |
|
A weight metric used by the NCDP protocol entity and
associated with a physical interface that supports synchronous
clock recovery. When NCDP is enabled for the physical
interface the value of this object is used by NCDP algorithms
during tree computations.
The lower the administrative weight, the more attractive the
given link is to the NCDP algorithm. If the weight of a link
is changed, it can cause the NCDP protocol entity to
reconstruct the clock distribution tree.
|
| cwnAtmInterfaceVpi |
.1.3.6.1.4.1.9.9.223.1.5.1.1.3 |
|
The Virtual Path Identifier(VPI) value of the Virtual Channel
Connection(VCC) supporting the NCDP entity at this
ATM interface.
If the values of 'cwnAtmInterfaceVpi' and 'cwnAtmInterfaceVci'
are both equal to zero then the NCDP entity
is not supported at this ATM interface.
|
| cwnAtmInterfaceVci |
.1.3.6.1.4.1.9.9.223.1.5.1.1.4 |
|
The Virtual Channel Identifier(VCI) value of the VCC supporting
the NCDP entity at this ATM interface.
If the values of 'cwnAtmInterfaceVpi' and 'cwnAtmInterfaceVci'
are both equal to zero then the NCDP entity
is not supported at this ATM interface.
|
