SM Overhead

In this user interface, you can set section monitoring (SM) overhead bytes and relevant parameters.

Navigation Path

In the NE Explorer, click a board and choose Configuration > OTN > SM Overhead from the Function Tree.

Parameters

Field

Value

Description

Object
  • Equipment that supports the master and slave shelf management: NE name-shelf ID(shelf name)-slot number-board name-port number(port name)(-monitoring level)
  • Equipment that does not support the master and slave shelf management: NE name-slot number-board name-port number(port name)(-monitoring level)
NOTE:

For details about the differences between the standard and compatibility modes, see the Impacts of the Standard Mode on the U2000 in Channel Model (OTU, Line or PID Board).

Displays the object that the SM overhead monitors.

Primary,Secondary State

For example: OOS-AU, SGEO

Displays the state of the object.

TIM Mode

SAPI, DAPI, BOTH, OFF
Sets the mode of detecting trail trace identifier mismatch.
  • SAPI: Only the source tag of the TTI is detected. When the source tag of the TTI to be Received is inconsistent with that of the TTI Received, an alarm is reported.
  • DAPI: Only the sink tag of the TTI is detected. When the sink tag of the TTI to be Received is inconsistent with that of the TTI Received, an alarm is reported.
  • BOTH: Both the source tag and sink tag of the TTI are detected at the same time. When the source tag or sink tag of the TTI to be Received is inconsistent with that of the TTI Received, an alarm is reported.
  • OFF: Neither the source tag or the sink tag is detected. Even if the source tag or sink tag of the TTI to be Received is inconsistent with that of the TTI Received, no alarm is reported.

TTI to Be Sent SAPI

The maximum length is 15 characters.

Sets SAPI string of the trail trace identifier (TTI) to be sent by the port.

TTI to Be Sent DAPI

The maximum length is 15 characters.

Sets DAPI string of the trail trace identifier (TTI) to be sent by the port.

TTI to Be Sent OPER

The maximum length is 32 characters.

Sets OPER string of the trail trace identifier (TTI) to be sent by the port.

TTI to Be Received SAPI

The maximum length is 15 characters.

Sets SAPI string of the TTI that should be received by the port.

TTI to Be Received DAPI

The maximum length is 15 characters.

Sets DAPI string of the TTI that should be received by the port.

TTI Received SAPI

The maximum length is 15 characters.

Displays SAPI string of the TTI received by the port.

TTI Received DAPI

The maximum length is 15 characters.

Displays SAPI string of the TTI received by the port.

TTI Received OPER

The maximum length is 32 characters.

Displays OPER string of the TTI received by the port.

DEG Threshold

For example: 49424

Sets the DEG threshold when the BIP8 Detection Mode is set as BURST.

DEG Detection Time

1 to 10

Sets the DEG monitoring time when the BIP8 Detection Mode is set as BURST.

BIP8 Detection Mode

BURST, POISSON

Sets the BIP8 error detection mode.

OTN OTUk SM BIP-8 SFBER

1E-3, 1E-4, 1E-5

Sets the performance degradation threshold when the BIP8 bit errors are detected. A signal degrade occurs if the signal bit error rate reaches this value.

OTN OTUk SM BIP-8 SDBER

1E-5, 1E-6, 1E-7, 1E-8, 1E-9

Sets the performance threshold-crossing threshold when the BIP8 bit errors are detected.

Enable TIM Response

DISABLE, ENABLE

Sets whether to enable the TIM follow-up response or not. When a TIM alarm is generated at this end, an AIS alarm is inserted to services in the downstream direction. This interrupts the services in the downstream direction.

DEG Detection Time Window (ms)

10, 100, 1000

Default: 1000

Set the interval time slice of DEG.
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