Procedure 12-20.1: Back out OC-3 1+1 network upgrade (main-to-main)

Important!

This is not a stand-alone procedure. Perform this procedure only as directed by another procedure.

Steps

Important!

When optical fibers are disconnected during this procedure, inc. LOS alarms are reported. The holdover mode active condition may also be reported depending on the provisioned system timing mode.

Complete the following steps to back out an OC-3 1+1 network to an OC-12 1+1 network upgrade where the nodes are connected using the Main slots at both nodes.

 
1

Identify the last node that was upgraded.

If the last node upgraded is...

Then...

the near-end Alcatel-Lucent 1665 DMXtend node (starting node) and the 1+1 network upgrade is complete (all nodes connected to the 1+1 network using the Main slots are in the Ring Upgrade Mode),

Identify and log in to the near-end Alcatel-Lucent 1665 DMXtend node (starting node) in the 1+1 network and continue with the next step.

not the near-end Alcatel-Lucent 1665 DMXtend node (starting node) and both Main slots have been upgraded,

Log in to the last node upgraded and proceed to Step 6.

not the near-end Alcatel-Lucent 1665 DMXtend node (starting node) and only Main slot M1 has been upgraded,

Log in to the last node upgraded and proceed to Step 10.

Reference:

Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar® CIT session

2

If required at the near-end node (starting node), verify the active/standby status of the OC-12 circuit pack in Main slot M2 and perform manual switches to switch traffic away from an active circuit pack.

If the working card (slot 1 card) is to be upgraded and is active, perform an optional manual transmission switch.

  1. Select Fault → Protection Switch.

  2. Select the required 1+1 Line and click Select.

  3. Select the "Manual to Protection" Switch Type and click Apply.

If the protect card (slot 2 card) is to be upgraded and is active, perform an optional manual transmission switch.

  1. Select Fault → Protection Switch.

  2. Select the required 1+1 Line and click Select.

  3. Select the "Manual to Working" Switch Type and click Apply.

Reference:

Procedure 12-20.4: Verify active/standby status of circuit pack to be replaced

3

Identify and log in to the far-end node in the 1+1 network.

Reference:

Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar® CIT session

4

If required at the far-end node, verify the active/standby status of the OC-12 circuit pack in Main slot M2 and perform manual switches to switch traffic away from an active circuit pack.

If the working card (slot 1 card) is to be upgraded and is active, perform an optional manual transmission switch.

  1. Select Fault → Protection Switch.

  2. Select the required 1+1 Line and click Select.

  3. Select the "Manual to Protection" Switch Type and click Apply.

If the protect card (slot 2 card) is to be upgraded and is active, perform an optional manual transmission switch.

  1. Select Fault → Protection Switch.

  2. Select the required 1+1 Line and click Select.

  3. Select the "Manual to Working" Switch Type and click Apply.

Reference:

Procedure 12-20.4: Verify active/standby status of circuit pack to be replaced

5

Important!

If the circuit pack is active for timing and/or transmission, opening the latch causes timing and/or transmission switches. Transmission hits (less than 60 ms) will occur for each separate protection switch.

Do not reconnect the optical fibers until instructed to do so. The optical fibers are reconnected after the OC-12 circuit pack is backed out at each end of the optical span.

At the near-end node, open the faceplate latch on the OC-12 OLIU circuit pack in Main slot M2. Disconnect the optical fibers from the OC-12 OLIU circuit pack in Main slot M2. Replace the OC-12 OLIU circuit pack in Main slot M2 with the original OC-3 OLIU circuit pack.

Result:

The original circuit pack in Main slot M2 is tested and autoprovisioned.

The system reports an unexpected circuit pack type condition and an inc. OC12 LOS alarm for Main slot M2. Alarms may also be reported at other nodes.

Reference:

Procedure 4-2: Install OLIU circuit packs in Main slots

6

Important!

If the circuit pack is active for timing and/or transmission, opening the latch causes timing and/or transmission switches. Transmission hits (less than 60 ms) will occur for each separate protection switch.

At the far-end node, open the faceplate latch on the OC-12 OLIU circuit pack in Main slot M2. Disconnect the optical fibers from the OC-12 OLIU circuit pack in Main slot M2. Replace the OC-12 OLIU circuit pack in Main slot M2 with the original OC-3 OLIU circuit pack.

Result:

The original circuit pack in Main slot M2 is tested and autoprovisioned.

The system reports an unexpected circuit pack type condition and an inc. OC12 LOS alarm for Main slot M2.

Reference:

Procedure 4-2: Install OLIU circuit packs in Main slots

7

At both ends of the optical span to be backed out, perform the following to connect the original OC-3 circuit pack in the Main slot M2 and the original OC-3 circuit pack in Main slot M2 at the opposite end of the original OC-3 optical span:

  1. Clean and connect the transmit optical fibers.

  2. Measure the optical receive power of the receive fibers using an optical power meter. Select the appropriate LBO to attenuate the receive signal to the middle of the allowable optical receive power range. (Refer to the Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Applications and Planning Guide, 365-372-324 for the SONET optical specifications of the OC-3 circuit packs.)

  3. Clean and connect the receive fibers.

Result:

The inc. OC12 LOS alarms clear. Transmission is now supported on the original OC-3 optical span.

Reference:

Procedure 14-4: Perform connection and verification of optical facility

8

If required at the far-end node, verify the active/standby status of the OC-12 circuit pack in Main slot M1 and perform manual switches to switch traffic away from an active circuit pack.

If the working card (slot 1 card) is to be upgraded and is active, perform an optional manual transmission switch.

  1. Select Fault → Protection Switch.

  2. Select the required 1+1 Line and click Select.

  3. Select the "Manual to Protection" Switch Type and click Apply.

If the protect card (slot 2 card) is to be upgraded and is active, perform an optional manual transmission switch.

  1. Select Fault → Protection Switch.

  2. Select the required 1+1 Line and click Select.

  3. Select the "Manual to Working" Switch Type and click Apply.

Reference:

Procedure 12-20.4: Verify active/standby status of circuit pack to be replaced

9

If required at the near-end node, verify the active/standby status of the OC-12 circuit pack in Main slot M1 and perform manual switches to switch traffic away from an active circuit pack.

If the working card (slot 1 card) is to be upgraded and is active, perform an optional manual transmission switch.

  1. Select Fault → Protection Switch.

  2. Select the required 1+1 Line and click Select.

  3. Select the "Manual to Protection" Switch Type and click Apply.

If the protect card (slot 2 card) is to be upgraded and is active, perform an optional manual transmission switch.

  1. Select Fault → Protection Switch.

  2. Select the required 1+1 Line and click Select.

  3. Select the "Manual to Working" Switch Type and click Apply.

Reference:

Procedure 12-20.4: Verify active/standby status of circuit pack to be replaced

10

Important!

The UPD/INIT button does not work during this upgrade.

At the far-end node, at the System View select Configuration → Update System → Upgrade. Select main-2 as the Directed Slot Choice and click OK.

Result:

A dialog box appears asking you to confirm executing this command. Click Yes.

The unexpected circuit pack type condition for Main slot M2 clears, and the system reports an unexpected circuit pack type condition for Main slot M1.

11

Important!

If the circuit pack is active for timing and/or transmission, opening the latch causes timing and/or transmission switches. Transmission hits (less than 60 ms) will occur for each separate protection switch.

Do not reconnect the optical fibers until instructed to do so. The optical fibers are reconnected after the OC-12 circuit pack is backed out at each end of the optical span.

At the far-end node, open the faceplate latch on the OC-12 OLIU circuit pack in Main slot M1. Disconnect the optical fibers from the OC-12 OLIU circuit pack in Main slot M1. Replace the OC-12 OLIU circuit pack in Main slot M1 with the original OC-3 OLIU circuit pack.

Result:

The original circuit pack in Main slot M1 is tested and autoprovisioned.

The unexpected circuit pack type condition for Main slot M1 clears, and the system reports an inc. OC3 LOS alarm for Main slot M1. Alarms may also be reported at other nodes.

Reference:

Procedure 4-2: Install OLIU circuit packs in Main slots

12

Important!

The UPD/INIT button does not work during this upgrade.

At the near-end node, select Configuration → Update System → Upgrade. Select main-2 as the Directed Slot Choice and click OK.

Result:

A dialog box appears asking you to confirm executing this command. Click Yes.

The unexpected circuit pack type condition for Main slot M2 clears, and the system reports an unexpected circuit pack type condition for Main slot M1.

13

Important!

If the circuit pack is active for timing and/or transmission, opening the latch causes timing and/or transmission switches. Transmission hits (less than 60 ms) will occur for each separate protection switch.

At the near-end node, open the faceplate latch on the OC-12 OLIU circuit pack in Main slot M1. Disconnect the optical fibers from the OC-12 OLIU circuit pack in Main slot M1. Replace the OC-12 OLIU circuit pack in Main slot M1 with the original OC-3 OLIU circuit pack.

Result:

The original circuit pack in Main slot M1 is tested and autoprovisioned.

The unexpected circuit pack type condition for Main slot M1 clears, and the system reports an inc. OC3 LOS alarm for Main slot M1.

Reference:

Procedure 4-2: Install OLIU circuit packs in Main slots

14

At both ends of the optical span to be backed out, perform the following to connect the original OC-3 circuit pack in the Main slot M1 and the original OC-3 circuit pack in Main slot M1 at the opposite end of the original OC-3 optical span:

  1. Clean and connect the transmit optical fibers.

  2. Measure the optical receive power of the receive fibers using an optical power meter. Select the appropriate LBO to attenuate the receive signal to the middle of the allowable optical receive power range. (Refer to the Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Applications and Planning Guide, 365-372-324 for the SONET optical specifications of the OC-3 circuit packs.)

  3. Clean and connect the receive fibers.

Result:

The inc. OC3 LOS alarms clear. Transmission is now supported on the original OC-3 optical span

Reference:

Procedure 14-4: Perform connection and verification of optical facility

STOP! To complete backing out the 1+1 network upgrade, return to the procedure that directed you to perform this procedure.

End of steps

November 2011Copyright © 2011 Alcatel-Lucent. All rights reserved.