Configuration Guide for Cisco Optical Site Manager, IOS XR Release 26.x.x

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Configuration Guide for Cisco Optical Site Manager, IOS XR Release 26.x.x

Provision SONET or SDH Interfaces

Updated: October 14, 2026

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Use this procedure to provision SONET or SDH Interfaces. This task helps you complete the required configuration, verification, or management action in Cisco Optical Site Manager.

Provisioning SONET or SDH interfaces involves configuring parameters for synchronous optical network (SONET) or synchronous digital hierarchy (SDH) interfaces on optical line cards. This action enables the transport of SONET or SDH signals over the network and supports payloads such as OC192 for SONET and STM64 for SDH.

Set the operational parameters that control signal quality monitoring, synchronization, and interface behavior. This ensures that the interfaces process and transport SONET/SDH signals correctly, maintain synchronization, handle signal failures, and support trace monitoring and threshold settings for performance management.

Before you begin

Follow these steps to provision the parameters for the SONET or SDH interfaces of a card.

Procedure

  1. Click the Provisioning tab.

  2. Perform one of these steps:

    • Click the SONET Trace Monitoring section to provision interface parameters for SONET.
    • Click the SDH Trace Monitoring section to provision interface parameters for SDH.

  3. Click the Edit button.

    The fields in the table become editable.

  4. Modify required settings as described in the Table 1 table.

  5. Click Apply.

The system saves your changes, and the modified SDH or SONET settings are displayed for the selected card.

Table 1. SONET or SDH Interface Parameters

Field

Description

Valid Values

Port

Displays the port number.

—

Description

Displays the port description.

Note

This parameter is not supproted for the OC192 and STM64 card modes.

—

Type

Displays the current payload for the port. OC192 is displayed for SONET systems and STM64 is displayed for SDH systems.

  • OC192

  • STM64

SF BER

Sets the signal fail (SF) bit error rate (BER).

  • 1E-3

  • 1E-4

  • 1E-5

SD BER

Sets the signal degrade (SD) bit error rate (BER).

  • 1E-5

  • 1E-6

  • 1E-7

  • 1E-8

  • 1E-9

Squelch Mode

When a LOS is detected on the near-end client input, the far-end client laser is turned off. It is said to be squelched.

Alternatively, an AIS can be invoked.

Note

This parameter is not supported for the OC192 and STM64 card modes.

  • Squelch

  • AIS

Squelch Hold Off Time

Sets the period in milliseconds that the client interface waits for resolution of issues on the trunk side. The client squelching starts after this period.

Note

This parameter is not supported for the OC192 and STM64 card modes.

  • Disable

  • 50 ms

  • 100 ms

  • 250 ms

  • 500 ms

ProvidesSync

(Display only) Displays the ProvidesSync card parameter.

Note

This parameter is not supported for the OC192 and STM64 card modes.

  • true

  • false

Send DoNotUse

When checked, sends a “Do Not Use for Synchronization (DUS)” message on the S1 byte.

Note

This parameter is not supported for the OC192 and STM64 card modes.

  • true

  • false

Sync SyncMsgIn

Sets the ProvidesSync card parameter. Enables synchronization status messages, which allow the node to choose the best timing source.

Note

This parameter is not supported for the OC192 and STM64 card modes.

  • true

  • false

Admin SSM

Overrides the synchronization status message (SSM) and the synchronization traceability unknown (STU) value. If the node does not receive an SSM signal, it defaults to STU.

Note

This parameter is not supported for the OC192 and STM64 card modes.

  • DUS

  • PRS

  • RES

  • SMC

  • ST2

  • ST3

  • ST3E

  • ST4

  • STU

  • TNC

Termination Mode

Sets the termination mode. When a session is terminated, the signal is either reinitialized or passed through without any changes.

For 400G-XP, 10x10G-LC, and OTU2-XP cards, the default mode is Transparent.

For the 40E-MXP card, the default mode is Transparent but can be changed to other values as required.

Note

This parameter is not supported for the OC192 and STM64 card modes.

For SONET:

  • Transparent

  • Line

  • Session

For SDH:

  • Transparent

  • Multiplex Section

  • Regeneration Section

Admin State

Sets the administrative state of the port.

—

Service State

(Display only) Identifies the autonomously generated state that gives the overall condition of the port. Service states appear in the format:PrimaryState-PrimaryState Qualifier, Secondary State.

  • IS-NR/ Unlocked-enabled

  • OOS-AU,AINS/ Unlocked-disabled, automaticInService

  • OOS-MA,DSBLD/ Locked-enabled,disabled

  • OOS-MA,MT/ Locked-enabled,maintenance