Enters global configuration mode.

Enters SONET controller configuration submode and specifies the SONET controller name and instance identifier with the rack/slot/module/port notation.

Configures the SONET port transmit clock source, where the internal keyword sets the internal clock and line keyword sets the clock recovered from the line.

• Use the line keyword whenever clocking is derived from the network. Use the internal keyword when two routers are connected back-to-back or over fiber for which no clocking is available.

• The line clock is the default.

(Optional) Configures the SONET line delay trigger values, where the trigger values are in the range from 0 through 60000 milliseconds, and the default delay trigger value is 0 milliseconds.

(Optional) Configures the amount of time before a SONET line delay trigger alarm is cleared. The range is from 1000 through 180000 milliseconds, and the default is 10 seconds.

(Optional) Configures the controller framing with either the sdh keyword for Synchronous Digital Hierarchy (SDH) framing or the sonet keyword for SONET framing.

SONET framing (sonet ) is the default.

(Optional) Configures the SONET controller for loopback, where the internal keyword selects internal (terminal) loopback, or the line keyword selects line (facility) loopback.

(Optional) Configures the controller’s overhead, where the j0 keyword specifies the STS identifier (J0/C1) byte, and the s1s0 keyword specifies bits s1 and s0 of H1 byte.

• The default byte value for the j0 keyword is 0xcc, and the default byte value for the s1s0 keyword is 0.

• The range of valid values for j0 and s1s0 is 0 through 255.

(Optional) Configures SONET controller path values.

Keyword definitions are as follows:

• ais-shut —Set sending path alarm indication signal (PAIS) when shut down.

• b3-ber-prdi —Enable sending of a path-level remote defect indication (PRDI) when the bit error rate (BER) bit interleaved parity (BIP) threshold is exceeded.

• delay clear value—Set the amount of time before a Synchronous Transport Signal (STS) path delay trigger alarm is cleared. Replace the value argument with a number in the range from 0 through 180000 milliseconds. The default value is 10 seconds.

• delay trigger value —Set SONET path delay values or delay trigger value. Replace the value argument with a number in the range from 0 through 60000 milliseconds. The default value is 0 milliseconds.

• overhead [c2 byte-value | j1 line] —Set SONET POH byte or bit values. Enter the c2 keyword to specify STS SPE content (C2) byte, and replace the byte-value argument with a number in the range from 0 through 255. Enter the j1 keyword to configure the SONET path trace (J1) buffer, and replace the line argument with the path trace buffer identifier (in ASCII text).

• report [b3-tca | pais | plop | pplm | prdi | ptim] —Set SONET path alarm reporting. Specifies which alarms are reported and which bit error rate (BER) thresholds will signal an alarm. By default, B3 BER threshold crossing alert (TCA) and path loss of pointer (PLOP) reporting are enabled. Specifying the pais keyword sets PAIS reporting status; pplm sets path payload mismatch (PPLM) defect reporting status; prdi sets path remote defect indication reporting status; and ptim sets path trace identity mismatch (PTIM) defect reporting status.

  The no report b3-tca and no report plop commands in SONET/SDH path configuration submode disable B3 BER TCA and PLOP reporting status, respectively.

• scrambling disable —Disable SPE scrambling. Note that SPE scrambling is enabled by default.

• threshold b3-tca BER—Set SONET path BER threshold value. Replace the BER argument with a number in the range from 3 through 9. The threshold value is interpreted as a negative exponent of 10 when determining the bit error rate. For example, a value of 5 implies a bit error rate of 10 to the minus 5. The default BER threshold value is 6.

• uneq-shut —Sets sending Unequipped (UNEQ) when shut down.

Saves configuration changes.

• When you issue the end command, the system prompts you to commit changes:

  
  Uncommitted changes found, commit them before exiting(yes/no/cancel)?
  [cancel]:
  

  - Entering yes saves configuration changes to the running configuration file, exits the configuration session, and returns the router to EXEC mode.

  - Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes.

  - Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes.

• Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session.

Verifies the SONET controller configuration.

Enters global configuration mode.

Adds an APS group with a specified number and enters APS group configuration mode.

• Use the aps group command in global configuration mode.

• To remove a group, use the no form of this command, as in: no aps group number , where the value range is from 1–255.

  Note	To use the aps group command, you must be a member of a user group associated with the proper task IDs for aps commands. The aps group command is used even when a single protect group is configured.

Creates a channel for the APS group. 0 designates a protect channel, and 1 designates a working channel.

—

Exits APS group configuration mode and enters global configuration mode.

(Optional) Configures a loopback interface if a two-router APS is desired and enters interface configuration mode for a loopback interface.

Assigns an IPV4 address and subnet mask to the loopback interface.

Exits interface configuration mode for a loopback interface, and enters global configuration mode.

Connects the interface for the channel selected in Step 3, and enters interface configuration mode.

For serial interfaces, specifies the complete interface number with the rack/slot/module/port/T3Num/T1num:instance notation.

Assigns an IPv4 address and subnet mask to the interface.

Selects a CRC value for the channel. Enter the 16 keyword to specify 16-bit CRC mode, or enter the 32 keyword to specify 32-bit CRC mode. For POS interfaces, the default CRC is 32. For serial interfaces, the default is 16.

(Serial interfaces only) Set the Layer 2 encapsulation of an interface.

Sets the keepalive timer for the channel, where:

• interval —Number of seconds (from 1 to 30) between keepalive messages. The default is 10.

• disable —Turns off the keepalive timer.

• retry —(Optional) Number of keepalive messages (from 1 to 255) that can be sent to a peer without a response before transitioning the link to the down state. The default is 5 for interfaces with PPP encapsulation, and 3 for interfaces with HDLC encapsulation.

The keepalive command does not apply to interfaces using Frame Relay encapsulation.

Removes the shutdown configuration.

• The removal of the shutdown configuration removes the forced administrative down on the interface, enabling that interface to move to an up or down state (assuming the parent SONET layer is not configured administratively down).

—

Exits interface configuration mode, and enters global configuration mode.

Enters SONET controller configuration mode and specifies the SONET controller name and instance identifier with the rack/slot/module/port notation.

Configures SONET path values such as alarm indication signal (AIS) at shut down.

(Optional) Disables synchronous payload envelope (SPE) scrambling.

Configures the SONET port TX clock source, where the internal keyword sets the internal clock and the line keyword sets the clock recovered from the line.

• Use the line keyword whenever clocking is derived from the network; use the internal keyword when two routers are connected back-to-back or over fiber for which no clocking is available.

• The line clock (line ) is the default.

—

Saves configuration changes.

• When you issue the end command, the system prompts you to commit changes:

  
  Uncommitted changes found, commit them before exiting(yes/no/cancel)?
  [cancel]:
  

  - Entering yes saves configuration changes to the running configuration file, exits the configuration session, and returns the router to EXEC mode.

  - Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes.

  - Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes.

• Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session.

Exits SONET controller configuration mode, and enters global configuration mode.

Exits global configuration mode, and enters EXEC mode.

(Optional) Displays the operational status for all configured SONET APS groups.

(Optional) Displays the operational status for configured SONET APS groups.

Enters global configuration mode.

Enters SONET configuration mode.

Configures SONET port delay trigger values in milliseconds.

• Tip The commands in Step 2 and Step 3 can be combined in one command string and entered from global configuration mode like this: controller sonet r/s/m/p line delay trigger or controller sonet r/s/m/p path delay trigger .

Saves configuration changes.

• When you issue the end command, the system prompts you to commit changes:

  
  Uncommitted changes found, commit them before exiting(yes/no/cancel)?
  [cancel]:
  

  - Entering yes saves configuration changes to the running configuration file, exits the configuration session, and returns the router to EXEC mode.

  - Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes.

  - Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes.

• Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session.