Cisco Systems D200 manual 19-43

Chapter 19 DLPs D200 to D299

DLP- D238 Roll Two Cross-Connects from One Optical Circuit to a Second Optical Circuit

Step 9 Complete one of the following:

•If multiple Roll From paths exist, the Select Roll From dialog box appears. Select the path from which you want to roll traffic and click OK.

•If multiple Roll From paths do not exist, continue with Step 10.

The circuit status for the Roll From path changes from DISCOVERED to ROLL PENDING.

Step 10 In the Pivot/Fixed Point 2 window, click the square that represents the fixed path of the second connection to be rolled.

The path that is not selected is the Roll From path. The Roll From path is deleted after the roll is completed. The path identifier appears in the text box below the graphic image.

Step 11 Click Next.

Caution If the termination card is a DS3i-N-12, E1-N-14, E1-42 or E3-12 card, a roll will occur even if a valid signal is not detected on the Roll To port. The absence of PDI-P downstream for LOS, LOF, and AIS line defects causes the roll to continue without a valid signal. This is only seen with DUAL roll mode when both ends of the circuit use the card(s) listed in this statement.

Step 12 Click Finish. In the Circuits tab, the Roll From and Roll To circuits change from the DISCOVERED status to ROLL PENDING.

Step 13 Click the Rolls tab. Two new rolls now appear on the Rolls tab. For each pending roll, view the Roll Valid Signal status. When one of the following conditions is met, continue with Step 14.

•If the Roll Valid Signal status is true, a valid signal was found on the new port.

•If the Roll Valid Signal status is false, a valid signal was not found. Wait until the signal is found before continuing with the next step. If the signal is not found, refer to the Circuits and Timing section of the Cisco ONS 15454 SDH Troubleshooting Guide. To cancel the roll, see the “DLP-D240 Cancel a Roll” task on page 19-44.

•The roll is a one-way destination roll and the Roll Valid signal status is false. It is not possible to get a Roll Valid Signal status of true for a one-way destination roll.

Note You cannot cancel an automatic roll after a valid signal is found.

•A roll can be forced onto the Roll To Circuit destination without a valid signal by using the

Force Valid Signal button. If you choose Force Valid Signal, traffic on the circuit that is involved in the roll will be dropped when the roll is completed.

Step 14 If you selected Manual in Step 5, click both rolls on the Rolls tab and click Complete to route the traffic to the new port. If you selected Auto, continue with Step 15.

Note You cannot complete a roll if you cancelled the sibling roll. You must complete the two rolls together.

Step 15 For both manual and automatic rolls, click Finish to complete the circuit roll process. Step 16 Return to your originating procedure (NTP).

	Cisco ONS 15454 SDH Procedure Guide, R7.2
October 2007		19-43