- About this Guide
- Chapter 1, Install the Shelf and Backplane Cable
- Chapter 2, Install Cards and Fiber-Optic Cable
- Chapter 3, Connect the PC and Log into the GUI
- Chapter 4, Turn Up Node
- Chapter 5, Turn Up a DWDM Node
- Chapter 6, Turn Up Network
- Chapter 7, Turn Up DWDM Network
- Chapter 8, Create Circuits and VT Tunnels
- Chapter 9, Manage Alarms
- Chapter 10, Monitor Performance
- Chapter 11, Manage Circuits
- Chapter 12, Change Node Settings
- Chapter 13, Change Card Settings
- Chapter 14, Upgrade Cards and Spans
- Chapter 15, Convert Network Configurations
- Chapter 16, Add and Remove BLSR and Path Protection Nodes
- Chapter 17, Maintain the Node
- Chapter 18, Power Down the Node
- Appendix A, CTC Information and Shortcuts
- Appendix B, Shelf Assembly Specifications
- Glossary
- Before You Begin
- NTP-A154 Convert a Point-to-Point to a Linear ADM
- NTP-A155 Convert a Point-to-Point or a Linear ADM to a Two-Fiber BLSR
- NTP-A156 Convert a Point-to-Point or Linear ADM to a Path Protection
- NTP-A210 Convert a Path Protection to a Two-Fiber BLSR
- NTP-A211 Convert a Two-Fiber BLSR to a Four-Fiber BLSR
- NTP-A159 Modify a BLSR
- NTP-A228 Manage BLSR Manual Ring Switches
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 in an ONS 15454 network. For initial network turn up, see "Turn Up Network."
Note The procedures and tasks in this chapter do not apply to DWDM (Software Release 4.5) nodes.
Before You Begin
This section lists the chapter procedures (NTPs). Turn to a procedure for applicable tasks (DLPs).
1. A154 Convert a Point-to-Point to a Linear ADM—Complete as needed.
2. A155 Convert a Point-to-Point or a Linear ADM to a Two-Fiber BLSR—Complete as needed.
3. A156 Convert a Point-to-Point or Linear ADM to a Path Protection—Complete as needed.
4. A210 Convert a Path Protection to a Two-Fiber BLSR—Complete as needed.
5. A211 Convert a Two-Fiber BLSR to a Four-Fiber BLSR—Complete as needed.
6. A159 Modify a BLSR—Complete as needed.
7. A228 Manage BLSR Manual Ring Switches—Complete as needed.
NTP-A154 Convert a Point-to-Point to a Linear ADM
Note Optical transmit and receive levels should be in their acceptable range as shown in the specifications section for each card in Table 2-3.
Note In a point-to-point configuration, two OC-N cards are connected to two OC-N cards on a second node. Slots 1 to 4 and 14 to 17 or Slots 5 to 6 and 12 to 13 can be used if connections between nodes are consistent. For example, Slot 5 on the first point-to-point node connects to Slot 5 on the second point-to-point node for the working path, and Slot 6 connects to Slot 6 for the protect path. The working OC-N ports have data communications channel (DCC) terminations, and the OC-N cards are in a 1+1 protection group.
Step 1 Complete the "DLP-A60 Log into CTC" task. If you are already logged in, continue with Step 2.
Step 2 Complete the "DLP-A298 Check the Network for Alarms and Conditions" task.
Step 3 Log into the node that will be added to the point-to-point configuration.
Step 4 Complete the "A24 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 "A35 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 "DLP-A73 Create a 1+1 Protection Group" task.
Step 8 Complete the "DLP-A253 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 DCC failure alarms appear until you create DCC terminations in the point-to-point node during Step 9.
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 "DLP-A73 Create a 1+1 Protection Group" task for instructions.
Step 12 Create DCC terminations on the working OC-N card that will connect to the new node. See the "DLP-A253 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 "A28 Set Up Timing" procedure for the new node. If the new node is using line timing, make the working OC-N card 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.
Step 17 Repeat the procedure to add an additional node to the linear ADM.
Stop. You have completed this procedure.
DLP-A298 Check the Network for Alarms and Conditions
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 15454 Troubleshooting Guide.
Step 5 Return to your originating procedure (NTP).
NTP-A155 Convert a Point-to-Point or a Linear ADM to a Two-Fiber BLSR
Purpose |
This procedure upgrades a point-to-point configuration (two nodes) or a linear ADM configuration (three or more nodes) to a two-fiber bidirectional line switched ring (BLSR). |
Tools/Equipment |
None |
Prerequisite Procedures |
A124 Provision a Point-to-Point Network or |
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
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 15454 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-A60 Log into CTC" task for instructions. If you are already logged in, continue with Step 2.
Step 2 Complete the "DLP-A298 Check the Network for Alarms and Conditions" task.
Step 3 Right-click a span adjacent to the node you are logged into.
Step 4 From the shortcut menu, 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-192, no more than 96 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.
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-A189 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-A155 Delete a Protection Group" task at each node that supports the point-to-point or linear ADM span.
Step 9 Complete the "DLP-A214 Change the Service State for a Port" task to put the protect ports out of service at each node that supports the point-to-point or linear ADM span.
Step 10 (Linear ADM only) Physically remove the protect fibers from all nodes in the linear ADM; for example, the fiber running from Node 2/Slot 13 to Node 3/Slot 13 (as shown in Figure 15-1) can be removed.
Figure 15-1 Linear ADM to BLSR Conversion
Step 11 Create the ring by connecting the protect fiber from one end node to the protect port on the other end node. For example, the fiber between Node 1/Slot 5 and Node 2/Slot 5 (as shown in Figure 15-1) can be rerouted to connect Node 1/Slot 5 to Node 3/Slot 13.
Note If you need to physically remove any OC-N cards, do so now. In this example, cards in Node 2/Slots 5 and 13 can be removed. See the "A116 Remove and Replace a Card" procedure.
Step 12 From the network view, click the Circuits tabs and complete the "DLP-A139 Export CTC Data" task to save the circuit data to a file on your hard drive.
Step 13 Complete the "DLP-A253 Provision SONET DCC Terminations" task at the end nodes; provision the slot in each node that is not already in the SDCC Terminations list (in the Figure 15-1 example, Port 1 of Node 1/Slot 5 and Port 1 of Node 3/Slot 13).
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, STSs 25 to 48 for an OC-48 BLSR, and STSs 97 to 192 for an OC-192 BLSR), delete and recreate each circuit:
Note Deleting circuits is service affecting.
a. Complete the "A152 Delete Circuits" procedure for one circuit.
b. Create the circuit on STSs 1 to 6 for an OC-12 BLSR, STSs 1 to 24 for an OC-48 BLSR, or STSs 1 to 96 for an OC-192 BLSR on the fiber that served as the protect fiber in the linear ADM. See the "A189 Create a Manually Routed OC-N Circuit" procedure for instructions.
c. Repeat Steps a and b for each circuit residing on a BLSR protect STS.
Step 15 Complete the "A126 Create a BLSR" procedure to put the nodes into a BLSR.
Stop. You have completed this procedure.
DLP-A189 Verify that a 1+1 Working Slot is Active
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, perform a Manual switch on the working slot:
a. In the Selected Group area, choose the Protect/Active slot.
a. In the Switch Commands field, choose Manual.
b. 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 15454 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 revert to Standby, which might indicate a problem on the working span.
Step 7 Return to your originating procedure (NTP).
NTP-A156 Convert a Point-to-Point or Linear ADM to a Path Protection
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-A60 Log into CTC" task. If you are already logged in, continue with Step 2.
Step 2 Complete the "DLP-A298 Check the Network for Alarms and Conditions" task.
Step 3 Complete the "DLP-A189 Verify that a 1+1 Working Slot is Active" task for each node.
Step 4 Complete the "DLP-A155 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-A253 Provision SONET DCC Terminations" task at the protect cards in all nodes.
Step 6 Complete the "A152 Delete Circuits" procedure and the "A188 Create an Automatically Routed OC-N Circuit" procedure to delete and recreate the circuits one at a time.
Stop. You have completed this procedure.
NTP-A210 Convert a Path Protection to a Two-Fiber BLSR
This procedure is service affecting. All circuits on the ring are deleted and reprovisioned.
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 15454 Reference Manual.
Step 1 Complete the "DLP-A60 Log into CTC" task. If you are already logged in, continue with Step 2.
Step 2 Complete the "DLP-A298 Check the Network for Alarms and Conditions" task.
Step 3 From the View menu choose Go to Network View.
Step 4 Right-click a span adjacent to the node you are logged into.
Step 5 From the shortcut menu, 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-192, no more than 96 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.
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 options:
–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.
–Complete the "A195 Document Existing Provisioning" procedure.
Step 9 Delete the circuits:
Note This method uses the network view. To delete circuits one at a time from each node, see the "A152 Delete Circuits" procedure.
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 "A126 Create a BLSR" procedure to create the BLSR.
Step 11 Complete the "A175 Two-Fiber 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-A211 Convert a Two-Fiber BLSR to a Four-Fiber BLSR
Note Two-fiber OC-48 or OC-192 BLSRs can be converted to four-fiber BLSRs. To convert, install two additional OC-48 or OC-192 cards at each two-fiber BLSR node, then log into CTC and convert the BLSR from two-fiber to four-fiber. The fibers that were divided into working and protect bandwidths for the two-fiber BLSR are now fully allocated for working BLSR traffic. A span upgrade can be performed prior to the two-fiber to four-fiber BLSR conversion.
Note BLSR protection channel access (PCA) circuits, if present, will remain in their existing STSs. Therefore, they will be located on the working path of the four-fiber BLSR and will have full BLSR protection. To route PCA circuits on protection channels in the four-fiber BLSR, delete and recreate the circuits after the upgrade. For example, if you upgrade a two-fiber OC-48 BLSR to four-fiber, PCA circuits on the protection STSs (STSs 25 to 48) in the two-fiber BLSR will remain in their existing STSs which are working STSs in the four-fiber BLSR. Deleting and recreating the OC-48 PCA circuits moves the circuits to STSs 1 to 24 in the protect bandwidth of the four-fiber BLSR. To delete circuits, see the "A152 Delete Circuits" procedure. To create circuits, see "Create Circuits and VT Tunnels."
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 15454 Reference Manual.
Step 1 Complete the "DLP-A60 Log into CTC" task to log into one of the two-fiber nodes that you want to convert.
Step 2 Complete the "DLP-A298 Check the Network for Alarms and Conditions" task.
Step 3 Install two OC-48 or OC-192 cards at each BLSR node. You must install the same OC-N card rate as the two-fiber BLSR. See "Install Cards and Fiber-Optic Cable," for installation procedures.
Step 4 Connect the fiber to the new cards. Use the same east-west connection scheme that was used to create the two-fiber connections.
Step 5 Complete the "DLP-A214 Change the Service State for a Port" task to enable (put in service) the ports for each new OC-N card.
Step 6 Test the new fiber connections using procedures standard for your site.
Step 7 Convert the BLSR:
a. Display the network view and click the Provisioning > BLSR tabs.
b. Choose the two-fiber BLSR you want to convert then click the Upgrade to 4 Fiber button.
c. In the Upgrade BLSR dialog box, set the amount of time that will pass before the traffic reverts to the original working path after the condition that caused the switch has been resolved. The default is 5 minutes.
d. Click Next.
e. Assign the east and west protection ports:
•West Protect—Select the west BLSR port that will connect to the west protect fiber from the drop-down menu.
•East Protect—Select the east BLSR port that will connect to the east protect fiber from the drop-down menu.
f. Click Finish.
Step 8 Click the Alarms tab. Make sure the Filter button is not selected. Verify that no critical or major alarms are present, nor any facility alarms, such as LOS, LOF, AIS-L, SF, and SD. If an alarm is present, resolve the problem before proceeding to the next step. Refer to the Cisco ONS 15454 Troubleshooting Guide for more information about alarms.
Step 9 Complete the "A176 Four-Fiber BLSR Acceptance Test" procedure.
Stop. You have completed this procedure.
NTP-A159 Modify a BLSR
Step 1 Log into a node in the BLSR you want to modify. See the "DLP-A60 Log into CTC" task for instructions. If you are already logged in, continue with Step 2.
Step 2 Check the BLSR for outstanding alarms and conditions. See the "DLP-A298 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 15454 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. In network view, 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.
–Span Reversion—(Four-fiber BLSRs only) If needed, change the amount of time that will pass before the traffic reverts to the original working path after a span switch.
d. Click Apply.
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 If you need to change a BLSR node ID, complete the "DLP-A326 Change a BLSR Node ID" task; otherwise, proceed to Step 5.
Step 5 In network view, 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.
Note For definitions of these alarms, see the Cisco ONS 15454 Troubleshooting Guide.
Stop. You have completed this procedure.
DLP-A326 Change a BLSR Node ID
Purpose |
This task changes a BLSR node ID. |
Tools/Equipment |
None |
Prerequisite Procedures |
|
Required/As Needed |
As needed |
Onsite/Remote |
Onsite or remote |
Security Level |
Provisioning or higher |
Step 1 From the View menu choose Go to Network View.
Step 2 On the network map, double-click the node with the node ID you want to change.
Step 3 Click the Provisioning > BLSR tabs.
Step 4 Choose a Node ID number. Do not choose a number already assigned to another node in the same BLSR.
Step 5 Click Apply.
Step 6 Return to your originating procedure (NTP).
NTP-A228 Manage BLSR Manual Ring Switches
Traffic is not protected during a Manual ring protection switch.
Step 1 Log into a node in the BLSR you want to modify. See the "DLP-A60 Log into CTC" task for instructions. If you are already logged in, continue with Step 2.
Step 2 (Optional) Initiate a BLSR manual ring switch. See "DLP-A301 Initiate a BLSR Manual Ring Switch" task.
Step 3 (Optional) Clear a BLSR manual ring switch. See "DLP-A241 Clear a BLSR Manual Ring Switch" task.
Stop. You have completed this procedure.
DLP-A301 Initiate a BLSR Manual Ring Switch
Purpose |
This task performs a BLSR Manual ring switch. |
Tools/Equipment |
None |
Prerequisite Procedures |
|
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Traffic is not protected during a Manual ring protection switch.
Step 1 From the View menu choose Go to 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 and drag and drop it in 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. For four-fiber BLSRs, the squares represent ports. Right-click either working port.
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 on the network view map. This confirms the Manual switch.
Step 8 From the File menu, choose Close.
Step 9 Return to your originating procedure (NTP).
DLP-A241 Clear a BLSR Manual Ring Switch
Purpose |
This task clears a Manual ring switch. |
Tools/Equipment |
None |
Prerequisite Procedures |
|
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Traffic is not protected during a Manual ring switch.
Step 1 From the View menu choose Go to 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 on the network view map.
Step 7 From the File menu, choose Close.
Step 8 Return to your originating procedure (NTP).
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