Table Of Contents
Convert Network Configurations
Before You Begin
NTP-B154 Convert a Point-to-Point to a Linear ADM
DLP-B298 Check the Network for Alarms and Conditions
NTP-B155 Convert a Point-to-Point or a Linear ADM to a Two-Fiber BLSR
DLP-B189 Verify that a 1+1 Working Slot is Active
NTP-B156 Convert a Point-to-Point or Linear ADM to a Path Protection
NTP-B210 Convert a Path Protection to a Two-Fiber BLSR
NTP-B159 Modify a BLSR
DLP-B301 Initiate a BLSR Manual Ring Switch
DLP-B241 Clear a BLSR Manual Ring Switch
Convert Network Configurations
Note 
The terms "Unidirectional Path Switched Ring" and "UPSR" may appear in Cisco literature. These terms do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration. Rather, these terms, as well as "Path Protected Mesh Network" and "PPMN," refer generally to Cisco's path protection feature, which may be used in any topological network configuration. Cisco does not recommend using its path protection feature in any particular topological network configuration.
This chapter explains how to convert from one SONET topology to another. For initial network turn up, see "Turn Up Network."
Before You Begin
Before performing any of the following procedures, investigate all alarms and clear any trouble conditions. Refer to the Cisco ONS 15327 Troubleshooting Guide as necessary.
This section lists the chapter procedures (NTPs). Turn to a procedure for applicable tasks (DLPs).
1. 154 Convert a Point-to-Point to a Linear ADM—Complete as needed.
2. 155 Convert a Point-to-Point or a Linear ADM to a Two-Fiber BLSR—Complete as needed.
3. 156 Convert a Point-to-Point or Linear ADM to a Path Protection—Complete as needed.
4. 210 Convert a Path Protection to a Two-Fiber BLSR—Complete as needed.
5. 159 Modify a BLSR—Complete as needed.
NTP-B154 Convert a Point-to-Point to a Linear ADM
Purpose |
This procedure upgrades a point-to-point configuration (two nodes) to a linear add/drop multiplexer (ADM) configuration (3 or more nodes). |
Tools/Equipment |
None |
Prerequisite Procedures |
The node that will be added must have OC-N cards installed. See "Install Hardware," and "Turn Up Node," for procedures. |
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Note Optical transmit and receive levels should be in their acceptable range as shown in the specifications section for each card in Table 8-3.
Note In a point-to-point configuration, two OC-N cards are connected to two OC-N cards on a second node.
Step 1 Log into a point-to-point node. See the "DLP-B60 Log into CTC" task for instructions. If you are already logged in, go to Step 2.
Step 2 Check the point-to-point network for alarms and conditions. Ensure that the alarm filter is not turned on. See the "DLP-B298 Check the Network for Alarms and Conditions" task for instructions.
Step 3 Log into the node that will be added to the point-to-point configuration.
Step 4 Complete the "24 Verify Card Installation" procedure to ensure that the new node has two OC-N cards with the same rate as the point-to-point nodes.
Step 5 Complete the "35 Verify Node Turn Up" procedure for the new node.
Step 6 Physically connect the fibers between the point-to-point node and the new node.
Step 7 On the new node, create a 1+1 protection group for the OC-N cards that will connect to the point-to-point node. See the "170 Create Optical Protection Groups" procedure for instructions.
Step 8 Complete the "DLP-B253 Provision SONET DCC Terminations" task for the working OC-N cards in the new node that will connect to the linear ADM network. Make sure to set the Port State in the Create SDCC Termination dialog box to IS.
Note Data Communications Channel (DCC) failure alarms appear until you create DCC terminations in the point-to-point node.
Step 9 Display the point-to-point node that will connect to the new node in CTC node view.
Step 10 Ensure that the point-to-point node has OC-N cards installed that can connect to the new node.
Step 11 Create a 1+1 protection group for the OC-N cards that will connect to the new node. See the "170 Create Optical Protection Groups" procedure for instructions.
Step 12 Create DCC terminations on the working OC-N card that will connect to the new node. See the "DLP-B253 Provision SONET DCC Terminations" task. In the Create SDCC Termination dialog box, set the port state to IS.
Step 13 Display the new node in node view.
Step 14 Complete the "28 Set Up Timing" procedure for the new node. If the new node is using line timing, set the working OC-N card as the timing source.
Step 15 Display the network view to verify that the newly created linear ADM configuration is correct. Two green span lines should appear between each linear node.
Step 16 Click the Alarms tab. Verify that no unexpected alarms are displayed. Ensure that the alarm filter is not turned on.
Step 17 Repeat the procedure to add an additional node to the linear ADM.
Stop. You have completed this procedure.
DLP-B298 Check the Network for Alarms and Conditions
Purpose |
This task verifies that no alarms or conditions exist on the network. |
Tools/Equipment |
None |
Prerequisite Procedures |
60 Log into CTC |
Required/As Needed |
As needed |
Onsite/Remote |
Remote |
Security Level |
Retrieve or higher |
Step 1 From the View menu, choose Go to Network View. Verify that all affected spans on the network map are green.
Step 2 Verify that the affected spans do not have active switches on the network map. Span ring switches are graphically displayed on the span with the letters "L" for lockout ring, "F" for FORCE ring, "M" for MANUAL ring, and "E" for EXERCISE ring.
Step 3 A second verification method can be performed from the Conditions tab. Click Retrieve Conditions and verify that no switches are active. Make sure the Filter button is not selected.
Step 4 Click the Alarms tab. Verify that no critical or major alarms are present, nor any facility alarms, such as LOS, LOF, AIS-L, AIS-P, SF, and SD. Make sure the Filter button is not selected.
If trouble is indicated (for example, a major alarm exists), resolve the problem before proceeding. See "Manage Alarms," or, if necessary, refer to the Cisco ONS 15327 Troubleshooting Guide.
Step 5 Return to your originating procedure (NTP).
NTP-B155 Convert a Point-to-Point or a Linear ADM to a Two-Fiber BLSR
Purpose |
This procedure upgrades a point-to-point configuration or linear ADM to a two-fiber Bidirectional Line Switched Ring (BLSR). |
Tools/Equipment |
None |
Prerequisite Procedures |
None |
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Caution
This procedure is service affecting.
Note Optical transmit and receive levels should be in their acceptable range as shown in the specifications section for each card in the Cisco ONS 15327 Reference Manual.
Step 1 Log into one of the nodes that you want to convert from a point-to-point or ADM to a BLSR. See the "DLP-B60 Log into CTC" task for instructions. If you are already logged in, go to Step 2.
Step 2 Check for alarms and conditions. See the "DLP-B298 Check the Network for Alarms and Conditions" task for instructions.
Step 3 Right-click a span adjacent to the node you are logged into.
Step 4 From the popup window, click Circuits. The Circuits on Span window appears.
Step 5 Verify that the total number of active STS circuits does not exceed 50 percent of the span bandwidth. In the Circuits column there is a block titled "Unused." This number should exceed 50 percent of the span bandwidth.
Note If the span is an OC-48, no more than 24 STSs can be provisioned on the span. If the span is an OC-12, no more than 6 STSs can be provisioned on the span.
Warning If the first half of the capacity is exceeded, this procedure cannot be completed. Bandwidth must be 50 percent unassigned to convert to BLSR. Refer to local procedures for relocating circuits if these requirements are not met.
Step 6 Repeat Steps 3 through 5 for each node in the point-to-point or linear ADM that you will convert to BLSR. If all nodes comply with Step 5, proceed to Step 7.
Step 7 Complete the "DLP-B189 Verify that a 1+1 Working Slot is Active" task for every 1+1 protection group that supports a span in the point-to-point or linear ADM network.
Step 8 Complete the "DLP-B155 Delete a Protection Group" task at each node that supports the point-to-point or linear ADM span.
Step 9 Complete the "DLP-B214 Change the Service State for a Port" task to put the protect ports out of service at each node that supports the linear ADM span.
Step 10 (Linear ADM only) Physically remove the protect fibers from all nodes in the linear ADM.
Step 11 Create the ring by connecting the protect fiber from one end node to the protect port on the other end node.
Note If you need to physically remove any OC-N cards, do so now. See the "219 Remove and Replace a Card" procedure.
Step 12 From the network view, click the Circuits tabs and complete the "DLP-B139 Export CTC Data" task to save the circuit data to a file on your hard drive.
Step 13 Complete the "DLP-B253 Provision SONET DCC Terminations" task at the end nodes; provision the slot in each node that is not already in the SDCC Terminations list.
Caution
Deleting circuits is service affecting.
Step 14 For circuits provisioned on an STS that is now part of the protection bandwidth (STSs 7 to 12 for an OC-12 BLSR, and STSs 25 to 48 for an OC-48 BLSR), delete and recreate each circuit:
a. Complete the "152 Delete Circuits" procedure for one circuit.
b. Create the circuit on STSs 1 to 6 for an OC-12 BLSR, or on STSs 1 to 24 for an OC-48 BLSR on the fiber that served as the protect fiber in the linear ADM. See the "189 Create a Manually Routed Optical Circuit" procedure for instructions.
c. Repeat Steps a and b for each circuit residing on a BLSR protect STS.
Step 15 Complete the "126 Create a BLSR" procedure to put the nodes into a BLSR.
Stop. You have completed this procedure.
DLP-B189 Verify that a 1+1 Working Slot is Active
Purpose |
This task verifies that a working slot in a 1+1 protection scheme is active (and that the protect slot is in standby). |
Tools/Equipment |
None |
Prerequisite Procedures |
60 Log into CTC |
Required/As Needed |
As needed |
Onsite/Remote |
Both |
Security Level |
Maintenance or higher |
Step 1 In the node view, click the Maintenance > Protection tabs.
Step 2 In the Selected Group pane, verify that the working slot/port is shown as Working/Active. If so, this task is complete.
Step 3 If the working slot says Working/Standby, manually switch traffic to the working slot:
a. In the Selected Group pane, choose the Protect/Active slot.
b. In the Switch Commands field, choose Manual.
c. Click Yes in the confirmation dialog box.
Step 4 Verify that the working slot is carrying traffic (Working/Active).
Note If the slot is not active, look for conditions or alarms that might be preventing the card from carrying working traffic. Refer to the Cisco ONS 15327 Troubleshooting Guide.
Step 5 When the working slot is carrying traffic, clear the manual switch:
a. In the Switch Commands field, choose Clear.
b. Click Yes in the confirmation dialog box.
Step 6 Verify that the working slot does not switch back to Standby, which might indicate a problem on the working span.
Step 7 Return to your originating procedure (NTP).
NTP-B156 Convert a Point-to-Point or Linear ADM to a Path Protection
Purpose |
This procedure upgrades a point-to-point system to a path protection. |
Tools/Equipment |
None |
Prerequisite Procedures |
None |
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Caution
This procedure is service affecting. All circuits are deleted and reprovisioned.
Step 1 Log into a node on the point-to-point or linear ADM. See the "DLP-B60 Log into CTC" task.
Step 2 Check for alarms and conditions. See the "DLP-B298 Check the Network for Alarms and Conditions" task for instructions.
Step 3 Complete the "DLP-B189 Verify that a 1+1 Working Slot is Active" task for each node.
Step 4 Complete the "DLP-B155 Delete a Protection Group" task for each 1+1 protection group that supports the point-to-point or linear ADM span.
Step 5 Complete the "DLP-B253 Provision SONET DCC Terminations" task at the protect cards in all nodes.
Step 6 Complete the "152 Delete Circuits" procedure and the "188 Create an Automatically Routed Optical Circuit" procedure to delete and recreate the circuits one at a time.
Caution
Deleting circuits is service affecting.
Stop. You have completed this procedure.
NTP-B210 Convert a Path Protection to a Two-Fiber BLSR
Purpose |
This procedure converts a path protection to a two-fiber BLSR. |
Tools/Equipment |
None |
Prerequisite Procedures |
None |
Required/As Needed |
As needed |
Onsite/Remote |
Both |
Security Level |
Provisioning or higher |
Caution
This procedure is service affecting. All circuits on the ring are deleted and reprovisioned.
Caution
Read through this procedure completely before beginning the conversion.
Note Prior to beginning this procedure, you should have a unique ring ID number to identify the new BLSR and a unique node ID number for each node on the ring.
Note Prior to beginning this procedure, optical transmit and receive levels should be in their acceptable range as shown in the specifications section for each card in the Cisco ONS 15327 Reference Manual.
Step 1 Log into an ONS 15327 on the network where you will begin the ring conversion. See the "DLP-B60 Log into CTC" task.
Step 2 Check for alarms and conditions. See the "DLP-B298 Check the Network for Alarms and Conditions" task for instructions.
Step 3 Click View > Go to Network View.
Step 4 Right-click a span adjacent to the node you are logged into.
Step 5 From the popup window, click Circuits. The Circuits on Span window appears.
Step 6 Verify that the total number of active STS circuits does not exceed 50 percent of the span bandwidth. In the Circuits column there is a block titled "Unused." This number should exceed 50 percent of the span bandwidth.
Note If the span is an OC-48, no more than 24 STSs can be provisioned on the span. If the span is an OC-12, no more than 6 STSs can be provisioned on the span.
Warning If the first half of the capacity is exceeded, this procedure cannot be completed. Bandwidth must be 50 percent unassigned to convert to BLSR. Refer to local procedures for relocating circuits if these requirements are not met.
Step 7 Repeat Steps 1 through 6 for each node in the path protection that you will convert to BLSR. If all nodes comply with
Step 6, proceed to Step 8.
Step 8 Save all circuit information:
a. In network view, click the Provisioning > Circuits tabs.
b. Record the circuit information using one of the following tasks:
–From the File menu, click Print to print the circuits table.
–From the File menu, click Export and choose the data format: HTML, CSV (comma separated values), or TSV (tab separated values). Click OK and save the file in a temporary directory.
See the "195 Document Existing Provisioning" procedure for more information.
Note This method uses the network view. To delete circuits one at a time from each node, see the "152 Delete Circuits" procedure.
Step 9 Delete the circuits:
a. From network view, click the Circuits tab. All circuits on the ring appear.
b. With the Shift key pressed, click each circuit in the display. Each line in the display turns dark blue as it is selected.
c. After all circuits have been selected, click Delete. Allow several minutes for processing; the actual length of time depends on the number of circuits in the network.
Step 10 Complete the "126 Create a BLSR" procedure to create the BLSR.
Step 11 Complete the "175 BLSR Acceptance Test" procedure.
Step 12 To recreate the circuits, see "Create Circuits and VT Tunnels" and choose the applicable procedure for the circuit type you want to enter.
Stop. You have completed this procedure.
NTP-B159 Modify a BLSR
Purpose |
This procedure changes a BLSR ID, node ID, or ring and span reversion times. |
Tools/Equipment |
None |
Prerequisite Procedures |
126 Create a BLSR |
Required/As Needed |
As needed |
Onsite/Remote |
Onsite or remote |
Security Level |
Provisioning or higher |
Step 1 Log into a node in the BLSR you want to modify. See the "DLP-B60 Log into CTC" task for instructions.
Step 2 Check the BLSR for outstanding alarms and conditions. See the "DLP-B298 Check the Network for Alarms and Conditions" task for instructions.
Note Some or all of the following alarms display during BLSR setup: E-W MISMATCH, RING MISMATCH, APSCIMP, APSDFLTK, and BLSROSYNC. The alarms clear after you configure all the nodes in the BLSR. For definitions of these alarms, see the Cisco ONS 15327 Troubleshooting Guide.
Step 3 To change the BLSR ring ID or the ring or span reversion times, complete the following steps. If you want to change a node ID, go to Step 4.
a. Switch to network view and click the Provisioning > BLSR tabs.
b. Click the BLSR you want to modify and click Edit.
c. In the BLSR window, change any of the following:
–Ring ID—If needed, change the BLSR ring ID (a number between 0 and 9999). Do not choose a number that is already assigned to another BLSR.
–Reversion time—If needed, change the amount of time that will pass before the traffic reverts to the original working path after a ring switch.
d. Click Apply.
e. If you changed the ring ID, the BLSR window closes automatically. If you only changed a reversion time, close the window by choosing Close from the File menu.
Step 4 To change a BLSR node ID, complete the following steps; otherwise, proceed to Step 5.
a. On the network map, double-click the node with the node ID you want to change.
b. Click the Provisioning > BLSR tabs.
c. Choose a Node ID number. Do not choose a number already assigned to another node in the same BLSR.
d. Click Apply.
Step 5 Switch to network view and verify the following:
•A green span line appears between all BLSR nodes.
•All E-W MISMATCH, RING MISMATCH, APSCIMP, DFLTK, BLSROSYNC, and Node ID Mismatch alarms are cleared. Ensure that the alarm filter is not turned on.
Note For definitions of these alarms, see the Cisco ONS 15327 Troubleshooting Guide.
Stop. You have completed this procedure.
DLP-B301 Initiate a BLSR Manual Ring Switch
Purpose |
This task performs a BLSR Manual ring switch. |
Tools/Equipment |
None |
Prerequisite Procedures |
60 Log into CTC |
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Caution
Traffic is not protected during a Force protection switch.
Step 1 Display the network view.
Step 2 Click the Provisioning > BLSR tabs.
Step 3 Choose the BLSR and click Edit.
Tip To move an icon to a new location, for example, to see BLSR channel (port) information more clearly, click an icon on the Edit BLSR network graphic and while pressing Ctrl, drag the icon to a new location.
Step 4 Right-click any BLSR node channel (port) and choose Set West Protection Operation (if you chose a west channel) or Set East Protection Operation (if you chose an east channel).
Note For two-fiber BLSRs, the squares on the node icons represent the BLSR working and protect channels. You can right-click either channel.
Step 5 In the Set West Protection Operation dialog box or the Set East Protection Operation dialog box, choose MANUAL RING from the drop-down menu. Click OK.
Step 6 Click Yes in the two Confirm BLSR Operation dialog boxes.
Step 7 Verify that the channel (port) displays the letter "M" for MANUAL ring. Also verify that the span lines between the nodes where the Manual switch was invoked turn purple, and that the span lines between all other nodes turn green. This confirms the Manual switch.
Step 8 From the File menu, choose Close.
Step 9 Return to your originating procedure (NTP).
DLP-B241 Clear a BLSR Manual Ring Switch
Purpose |
This task clears a Manual ring switch. |
Tools/Equipment |
None |
Prerequisite Procedures |
60 Log into CTC |
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Caution
Traffic is not protected during a Force protection switch.
Step 1 Display the network view.
Step 2 Click the Provisioning > BLSR tabs.
Step 3 Choose the BLSR and click Edit.
Tip To move an icon to a new location, for example, to see BLSR channel (port) information more clearly, click an icon on the Edit BLSR network graphic and while pressing Ctrl, drag the icon to a new location.
Step 4 Right-click the BLSR node channel (port) where the Manual ring switch was applied and choose Set West Protection Operation or Set East Protection Operation, as applicable.
Step 5 In the dialog box, choose CLEAR from the drop-down menu. Click OK.
Step 6 Click Yes on the Confirm BLSR Operation dialog box. The letter "M" is removed from the channel (port) and the span turns green.
Step 7 From the File menu, choose Close.
Step 8 Return to your originating procedure (NTP).
Feedback