- About this Guide
- Chapter 1, Install the Bay and Backplane Connections
- 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 Network
- Chapter 6, Create Circuits and VT Tunnels
- Chapter 7, Manage Circuits
- Chapter 8, Manage Alarms
- Chapter 9, Monitor Performance
- Chapter 10, Change Card Settings
- Chapter 11, Change Node Settings
- Chapter 12, Convert Network Configurations
- Chapter 13, Add and Remove Nodes
- Chapter 14, Maintain the Node
- Chapter 15, Power Down the Node
- Chapter 16, DLPs E1 to E99
- Chapter 17, DLPs E100 to E199
- Chapter 18, DLPs E200 to E299
- Appendix A, CTC Information and Shortcuts
Add and Remove Nodes
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 add and remove Cisco ONS 15600 nodes from bidirectional line switched rings (BLSRs), path protection configurations, and linear add-drop multiplexer (ADM) networks.
Before You Begin
See Chapter 8, "Manage Alarms" to investigate all alarms, and manually document existing provisioning. To clear trouble conditions, refer to Cisco ONS 15600 Procedure Guide, R6.0.
This section lists the chapter procedures (NTPs). Turn to a procedure for a list of its tasks (DLPs).
1. E168 Add a BLSR Node—Complete as needed.
2. E169 Remove a BLSR Node—Complete as needed.
3. E67 Add a Path Protection Node—Complete as needed.
4. E123 Remove a Path Protection Node—Complete as needed.
5. E178 Add a Node to a Linear ADM—Complete as needed to add an ONS 15600 node between two nodes in a 1+1 configuration.
6. E159 Remove an In-Service Node from a Linear ADM—Complete as needed to remove an ONS 15600 from a linear ADM without disrupting traffic.
NTP-E168 Add a BLSR Node
Purpose |
This procedure expands a BLSR by adding a node. |
Tools/Equipment |
Fiber for new node connections |
Prerequisite Procedures |
Cards must be installed and node turn-up procedures completed on the node that will be added to the BLSR. See Chapter 2, "Install Cards and Fiber-Optic Cable," and Chapter 4, "Turn Up Node." |
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Adding a BLSR node can be service-affecting and should be performed during a maintenance window.
Step 1 Draw a diagram of the BLSR where you will add the node. In the diagram, identify the east and west BLSR OC-N trunk (span) cards and ports that will connect to the new node. (This information is essential to complete this procedure without error.) Figure 13-1 shows a drawing of a three-node, two-fiber BLSR that uses Slot 4/Port 1 and Slot 12/Port 3 for the BLSR trunk cards and ports. The dashed arrows show where the new fiber connections will be made to add a fourth node to the BLSR.
Figure 13-1 Three-Node, Two-Fiber BLSR Before a Fourth Node Is Added
Figure 13-2 shows a sample drawing of a three-node, four-fiber BLSR. The dashed arrows show the new fiber connections that will be made to add the fourth node. For four-fiber BLSRs, two fiber sets will be reconnected; the working fiber and the protect fiber.
Figure 13-2 Three-Node, Four-Fiber BLSR Before a Fourth Node is Added
Step 2 According to local site practice, complete the "NTP-E69 Back Up the Database" procedure on page 14-4 for all the nodes in the ring.
Step 3 Verify the card installation on the new node by completing the "NTP-E21 Verify Card Installation" procedure on page 4-2. Verify that the OC-N ports to be used as the BLSR trunk ports match the BLSR optical rate. For example, if the BLSR is OC-48, the new node must have OC-48 ports installed. If the OC-N cards are not installed or the optical rates do not match the BLSR, complete the "NTP-E11 Install the OC-N Cards" procedure on page 2-4.
Step 4 Verify that fiber is available to connect the new node to the existing nodes. Refer to the diagram drawn in Step 1.
Step 5 Complete the "NTP-E32 Verify Node Turn-Up" procedure on page 5-2. In order to have Cisco Transport Controller (CTC) visibility to the new node after adding it, you must be an authorized user on the node and you must have IP connectivity to the node.
Step 6 Create a static route on the new node if the following conditions are present. If the conditions are not present, continue with Step 8.
•The IP address for the new node is on the same subnet as other nodes in the network.
•On the new node Provisioning > Network > General subtab, Craft Access Only is not checked under Gateway Settings.
•A CTC computer is directly connected to the new node.
•CTC computers are directly connected to other nodes on the same subnet.
If these conditions are present, add static routes on the node that will be added to the BLSR, using the following settings:
•Destination IP address: Local-PC-IP-address
•Net Mask: 255.255.255.255
•Next Hop: IP-address-of-the-Cisco-ONS-15600
•Cost: 1
Step 7 To view Gateway Settings, see the "DLP-E30 Provision IP Settings" task on page 16-44.
Step 8 Complete the "DLP-E26 Log into CTC" task on page 16-39 at a node in the BLSR.
Step 9 Complete the "DLP-E147 Check BLSR or Path Protection Alarms and Conditions" task on page 17-39 to verify that the BLSR is free of service-affecting alarms or problems. If trouble is indicated (for example, a service-affecting alarm exists), resolve the problem before proceeding. See Chapter 8, "Manage Alarms" or, if necessary, refer to the Cisco ONS 15600 Troubleshooting Guide for information.
Step 10 From the View menu, choose Go to Network View and click the Provisioning > BLSR tabs.
Step 11 On paper, record the Ring Name, Ring Type, Line Rate, Ring Reversion, and Span Reversion (4 Fiber).
Step 12 From the Node column, record the Node IDs in the BLSR. The Node IDs are the numbers in parentheses next to the node name.
Step 13 Log into the new node:
•If the node has a LAN connection and appears on the network map, from the View menu, choose Go to Other Node, then enter the new node.
•If the new node is not connected to the network, log into it using the "DLP-E26 Log into CTC" task on page 16-39.
Step 14 Click the Alarms tab.
a. Verify that the alarm filter is not on. See the "DLP-E157 Disable Alarm Filtering" task on page 17-46 as necessary.
b. Verify that no unexplained alarms appear on the network. If alarms appear, investigate and resolve them before continuing. Refer to the Cisco ONS 15600 Troubleshooting Guide for procedures.
Step 15 Using the information recorded in Steps 11 and 12 and the diagram created in Step 1, create a BLSR on the new node. See the "DLP-E231 Create a BLSR on a Single Node" task on page 18-41.
Step 16 (Optional) Create test circuits, making sure they pass through the BLSR trunk cards/ports, and run test traffic through the node to ensure the cards are functioning properly. See the "NTP-E161 Create a Manually Routed Optical Circuit" procedure on page 6-9 and the "NTP-E85 Test Optical Circuits" procedure on page 6-15 for information.
Step 17 Create the data communications channel (DCC) terminations on the new node. See the "DLP-E114 Provision Section DCC Terminations" task on page 17-14.
Note Creating the DCC terminations causes the SDCC Termination Failure and Loss of Signal alarms to appear. These alarms will remain active until you connect the node to the BLSR.
Note If you map the K3 byte to another byte (such as E2), you must remap the ports on each side of the new node or span to the same byte. See the "DLP-E116 Remap the K3 Byte" task on page 17-17.
Step 18 Complete the "DLP-E26 Log into CTC" task on page 16-39 at a BLSR node that will connect to the new node.
Step 19 Referring to the diagram created in Step 1, complete the "DLP-E232 Initiate a BLSR Force Ring Switch" task on page 18-42 on the node that will connect to the new node on its west line (port).
Step 20 Referring to the diagram created in Step 1, complete the "DLP-E232 Initiate a BLSR Force Ring Switch" task on page 18-42 on the node that will connect to the new node on its east line (port).
Step 21 Click the Alarms tab.
a. Verify that the alarm filter is not on. See the "DLP-E157 Disable Alarm Filtering" task on page 17-46 as necessary.
b. Verify that no unexplained alarms appear on the network. If alarms appear, investigate and resolve them before continuing. Refer to the Cisco ONS 15600 Troubleshooting Guide for procedures.
Step 22 Following the diagram created in Step 1, remove the fiber connections from the two nodes that will connect to the new node.
a. Remove the west fiber from the node that will connect to the east port of the new node. In the Figure 13-1 example, this is Node 1/Slot 4/Port 1.
b. Remove the east fiber from the node that will connect to the west port of the new node. In the Figure 13-1 example, this is Node 3/Slot 12/Port 3.
Step 23 Connect fibers from the adjacent nodes to the new node following the diagram created in Step 1. Connect the west port to the east port and the east port to the west port. For four-fiber BLSRs, connect the protect fibers.
Step 24 After the newly added node appears in network view, double-click it to display the node in node view.
Step 25 Click the Provisioning > BLSR tabs.
Step 26 Click Ring Map. Verify that the new node appears on the Ring Map with the other BLSR nodes, then click OK.
Step 27 From the View menu, choose Go to Network View and perform the following steps:
a. Click the Provisioning > BLSR tabs. Verify that the new node appears in the Node column.
b. Click the Alarms tab. Verify that BLSR alarms such as RING-MISMATCH, E-W-MISMATCH, PRC-DUPID (duplicate node ID), and APSCDFLTK (default K) do not appear.
If the new node does not appear in the Node column, or if BLSR alarms are displayed, log into the new node and verify that the BLSR is provisioned on it correctly with the information from Steps 11 and 12. If the node still does not appear, or if alarms persist, refer to the Cisco ONS 15600 Troubleshooting Guide.
Step 28 Click the Circuits tab. Wait until all the circuits are discovered. The circuits that pass through the new node are incomplete.
Step 29 In network view, right-click the new node and choose Update Circuits With The New Node from the shortcut menu. Verify that the number of updated circuits in the dialog box is correct.
Step 30 If incomplete circuits still appear, refer to the Cisco ONS 15600 Troubleshooting Guide.
Step 31 Click the History tab. Verify that BLSR_RESYNC conditions are present for every node in the BLSR.
Step 32 Complete the "DLP-E150 Clear a BLSR Force Ring Switch" task on page 17-39 to remove the ring switch from the east BLSR span.
Step 33 Complete the "DLP-E150 Clear a BLSR Force Ring Switch" task on page 17-39 to remove the ring switch from the west BLSR span.
Step 34 According to local site practice, complete the "NTP-E89 Two-Fiber BLSR Acceptance Test" procedure on page 5-10 or the "NTP-E165 Four-Fiber BLSR Acceptance Test" procedure on page 5-12.
Stop. You have completed this procedure.
NTP-E169 Remove a BLSR Node
The following procedure minimizes traffic outages during node removals. You will delete all circuits that originate and terminate on the node being removed. In addition, you will verify that circuits passing through the node do not enter and exit the node on different STSs. If they do, you will delete and recreate the circuits, and traffic will be lost on that circuit during this time.
Step 1 According to local site practice, complete the "NTP-E69 Back Up the Database" procedure on page 14-4 for all the nodes in the ring.
Step 2 Complete the "DLP-E26 Log into CTC" task on page 16-39 at the node you want to remove from the BLSR.
Step 3 Complete the "DLP-E98 Verify Timing in a Reduced Ring" task on page 16-97.
Note If you remove a node that is the only building integrated timing supply (BITS) timing source for the ring, you also remove the only source of synchronization for all the nodes in that ring. Circuits that leave the ring to connect to other networks synchronized to a Stratum 1 clock will experience a high level of pointer adjustments, which might adversely affect traffic performance.
Step 4 Create a diagram of the BLSR where you will remove the node. You can draw the BLSR manually or complete the following to print the BLSR map from CTC:
a. From the View menu, choose Go to Network View.
b. Click the Provisioning > BLSR tabs.
c. Choose the desired BLSR, then click Edit.
d. In the BLSR window, verify that all the port information is visible. If not, press Ctrl and drag the node icons to a new location so the information can be viewed.
e. Complete the "DLP-E214 Print CTC Data" task on page 18-18.
f. Close the BLSR window by choosing Close from the File menu.
Step 5 Referring to the BLSR diagram, identify the following:
•The node that is connected through its west port to the target (removal) node; for example, if you were removing Node 4 in Figure 13-3, Node 1 is the node connected through its west port to Node 4.
•The node that is connected through its east port to the target (removal) node: in Figure 13-3, Node 3 is the node connected through its east port to Node 4.
Record the slot and port of the BLSR ring in the node.
Figure 13-3 Four-Node, Two-Fiber BLSR Before a Node Is Removed
Step 6 Complete the "DLP-E147 Check BLSR or Path Protection Alarms and Conditions" task on page 17-39 to verify that the BLSR is free of alarms. If trouble is indicated (for example, a major alarm exists), resolve the problem before proceeding. Refer to the Cisco ONS 15600 Troubleshooting Guide for instructions.
Step 7 From the View menu, choose Go to Other Node. Choose the node that you will remove and click OK.
Step 8 Click the Circuits tab. If the Scope setting is set to Network, choose Node from the Scope drop-down list. Make sure the Filter button is off (not indented) to ensure that all circuits are visible.
Step 9 Delete all circuits that originate or terminate on the node. See the "DLP-E163 Delete Circuits" task on page 17-49.
Step 10 Complete the "DLP-E212 Verify Pass-Through Circuits" task on page 18-17 to verify that circuits passing through the target node enter and exit the node on the same STS and/or VT.
Step 11 If K3 extension byte mapping is supported on adjacent nodes, complete the "DLP-E160 Verify BLSR Extension Byte Mapping" task on page 17-47. K3 extension byte mapping is supported on all ONS 15600 OC-48 and OC-192 ports, as well as the ONS 15454 OC-48 any slot (AS) card.
Step 12 From the View menu, choose Go to Network View.
Step 13 Referring to the diagram created in Step 4, complete the "DLP-E232 Initiate a BLSR Force Ring Switch" task on page 18-42 at each node that connects to the target (removal) node to force traffic away from it. You must perform a Force switch at each port connected to the target node. For example, in Figure 13-3, you would perform a Force switch on the east port of Node 3 and the west port of Node 1.
Step 14 Click the Alarms tab.
a. Verify that the alarm filter is not on. See the "DLP-E157 Disable Alarm Filtering" task on page 17-46 as necessary.
b. Verify that no unexplained alarms appear on the network. If alarms appear, investigate and resolve them before continuing. Refer to the Cisco ONS 15600 Troubleshooting Guide for procedures.
Step 15 Remove the fiber connections between the node being removed and the two neighboring nodes.
Step 16 Reconnect the fiber of the two neighboring nodes directly, west port to east port. For example in Figure 13-3, the east port of Node 3 (Slot 12) connects to the west port of Node 1 (Slot 5).
Step 17 Complete the following substeps:
a. From the View menu, choose Go to Other Node. Choose one of the newly connected nodes and click OK.
b. Click the Provisioning > BLSR tabs.
c. Choose the BLSR that originally contained the removed node, and then click Ring Map.
d. Wait until the removed node is no longer listed.
e. Repeat steps a through d for the other newly connected node in the BLSR.
Step 18 Complete the "DLP-E235 Delete a BLSR from a Single Node" task on page 18-49.
Step 19 Click the History tab. Verify that the BLSR_RESYNC condition appears for every node in the BLSR.
Step 20 Complete the "DLP-E150 Clear a BLSR Force Ring Switch" task on page 17-39 to remove the Force protection switches.
Step 21 According to local site practice, complete the "NTP-E89 Two-Fiber BLSR Acceptance Test" procedure on page 5-10.
Step 22 Complete the "DLP-E186 Remove Pass-through Connections" task on page 17-66.
Step 23 Log back into a node on the reduced ring. In the CTC Login dialog box, uncheck the Disable Network Discovery check box.
Note The deleted node will appear in network view until all SDCC terminations are deleted. To delete SDCC terminations, complete the "DLP-E7 Delete a Section DCC Termination" task on page 16-10.
Step 24 Click the Circuits tab and verify that no incomplete circuits are present. If incomplete circuits appear, repeat Steps 22 and 23.
Step 25 If you delete a node that was in a login node group, you will see incomplete circuits for that node in the CTC network view. Although it is no longer part of the ring, the removed node still reports to CTC until it is no longer in a login node group. If necessary, complete the "DLP-E187 Delete a Node from a Specified Login Node Group" task on page 17-67.
Step 26 To remove another node from a BLSR, repeat this procedure for the desired node.
Stop. You have completed this procedure.
NTP-E67 Add a Path Protection Node
Purpose |
This procedure adds a node to an existing path protection. |
Tools/Equipment |
None |
Prerequisite Procedures |
|
Required/As Needed |
As needed |
Onsite/Remote |
Onsite |
Security Level |
Provisioning or higher |
Note You can add only one node at a time. Perform these steps onsite and not from a remote location.
Step 1 Verify the card installation on the new node. See the "NTP-E21 Verify Card Installation" procedure on page 4-2. Verify that the OC-N cards that will serve as the path protection line cards match the path protection optical rate. For example, if the path protection is OC-48, the new node must have OC-48 cards installed. If the OC-N cards are not installed or the rate does not match the path protection, complete the "NTP-E11 Install the OC-N Cards" procedure on page 2-4 to install them.
Step 2 Verify that fiber is available to connect the new node to the existing nodes.
Step 3 Complete the "NTP-E32 Verify Node Turn-Up" procedure on page 5-2.
Step 4 Log into a node in the network where you want to add a path protection node. See the "DLP-E26 Log into CTC" task on page 16-39 for instructions. In order to have CTC visibility to the node after it is added, you must be an authorized user on the node and you must have IP connectivity to the node.
Step 5 Check to see if the new node IP address is on the same subnet as other nodes in the network. If two or more PCs are directly connected to different nodes that belong to the same subnet and Craft Access Only is not checked under Gateway Settings, add static routes on the gateway ONS 15600 nodes, using the following settings:
•Destination IP address: Local-PC-IP-address
•Net Mask: 255.255.255.255
•Next Hop: IP-address-of-the-Cisco-ONS-15600
•Cost: 1
See the "DLP-E31 Create a Static Route" task on page 16-46.
Step 6 Complete the "DLP-E147 Check BLSR or Path Protection Alarms and Conditions" task on page 17-39. If trouble is indicated (for example, a major alarm exists), resolve the problem before proceeding. Refer to the Cisco ONS 15600 Troubleshooting Guide, for instructions.
Step 7 Count the total number of circuits on the fiber that is cut between the existing nodes. To count the number of circuits, right click on the fiber that is cut, and click circuits.
Step 8 In network view, click the Circuits tab.
To view Partial circuits, click the Filter button and select PARTIAL from the Status drop-down list. The Partial circuits, if any, are displayed.
To view Partial_TL1 circuits, click the Filter button and select PARTIAL_TL1 from the Status drop-down list. The Partial_TL1 circuits, if any, are displayed.
Resolve any partial circuits (both Partial and Partial_TL1) in the network before proceeding. However, if you want to continue with Step 9, match the number of partial circuits and circuit names that existed before and after adding a path protection node. This ensures that no additional partial circuits are created after this procedure is completed.
Step 9 Log into the new node. If the node has a LAN connection and appears on the network map, from the View menu, choose Go to Other Node, then enter the new node. If the new node is not connected to the network, you will need to log into it directly. See the "DLP-E26 Log into CTC" task on page 16-39.
Step 10 Click the Alarms tab. Verify that no Critical or Major alarms are present, nor any facility alarms, such as LOS, LOF, AIS-L, SF, and SD. If trouble is indicated (for example, a major alarm exists), resolve the problem before proceeding. Refer to the Cisco ONS 15600 Troubleshooting Guide, for instructions.
Step 11 In network view, click the Circuits tab.
To view Partial circuits, click the Filter button and select PARTIAL from the Status drop-down list. The Partial circuits, if any, are displayed.
To view Partial_TL1 circuits, click the Filter button and select PARTIAL_TL1 from the Status drop-down list. The Partial_TL1 circuits, if any, are displayed.
Resolve any partial circuits (both Partial and Partial_TL1) in the network before proceeding. However, if you want to continue with Step 12, match the number of partial circuits and circuit names that existed before and after adding a path protection node. This ensures that no additional partial circuits are created after this procedure is completed.
Step 12 (Optional) Create test circuits, making sure they pass through the path protection line cards, and run test traffic through the node to ensure the cards are functioning properly. See the "NTP-E161 Create a Manually Routed Optical Circuit" procedure on page 6-9.
Step 13 Create the DCC terminations on the new node. See the "DLP-E114 Provision Section DCC Terminations" task on page 17-14.
Step 14 Complete the "DLP-E96 Switch All Path Protection Circuits on a Span" task on page 16-95 to switch traffic away from the span that will be broken to connect to the new node.
Traffic is not protected during a protection switch.
Step 15 Two nodes will connect directly to the new node; remove their fiber connections:
a. Remove the east fiber connection from the node that will connect to the west port of the new node.
b. Remove the west fiber connection from the node that will connect to the east port of the new node.
Step 16 Replace the removed fibers with fibers connected to the new node.
Step 17 Check to see if your new node's IP address is on the same subnet as other nodes in the network. If two or more PCs are directly connected to different nodes that belong to the same subnet, you need to add static routes on the gateway ONS 15600 nodes, following these rules:
•Destination IP-address: Local-PC-IP-address
•Net Mask: 255.255.255.255
•Next Hop: IP-address-of-the-Cisco-ONS-15600
•Cost: 1
See the "DLP-E31 Create a Static Route" task on page 16-46.
Step 18 Log out of CTC and log back into a node in the network. Refer to "DLP-E26 Log into CTC" task on page 16-39 for instructions.
Step 19 From the View menu, choose Go to Network View to display the path protection nodes. The new node should appear in the network map. Wait a few minutes to allow all the nodes to appear.
Step 20 Click the Circuits tab and wait for all the circuits to appear, including spans. Count the number of incomplete circuits.
Step 21 Ensure that nodes involved in the node addition operation are in the initialized state. This is because, CTC does not consider nodes that are not initialized (they appear as gray icons in the CTC network map) when evaluating the circuits.
Note Step 22 is recommended to be performed only on nodes (the newly added node, and the existing two nodes in the network between which the new node is added) involved in the node addition operation. Disable network discovery while launching CTC, add only those nodes involved in the node addition operation.
Note CTC automatically creates VT Tunnels. The cross connects should not be created manually in the intermediate nodes.
Note Step 22 does not create the overlay ring circuits that route traffic around multiple rings passing through one or more nodes more than once, on the new node.
Step 22 In the network view, right-click the new node and choose Update Circuits With New Node from the list of options. Wait for the confirmation dialog box to appear. Verify that the number of updated circuits displayed in the dialog box is correct (the circuit count should be same as obtained in Step 7).
Step 23 Click the Circuits tab and verify that no incomplete circuits are present. However, if the partial circuits still exist in the network, verify whether they were present in Step 8 and Step 11. This will ensure that no additional partial circuits are created by this procedure.
Step 24 Use the "DLP-E97 Clear a Switch for all Path Protection Circuits on a Span" task on page 16-96 to clear the protection switch. This will clear switches for both spans.
Step 25 Complete the "NTP-E36 Path Protection Acceptance Test" procedure on page 5-19.
Stop. You have completed this procedure.
NTP-E123 Remove a Path Protection Node
The following procedure minimizes traffic outages during node removals.
If you remove a node that is the only BITS timing source for the ring, you will remove the only source of synchronization for all the nodes in that ring. Circuits that leave the ring to connect to other networks that are synchronized to Stratum 1 timing reference will experience a high level of pointer adjustments, which might adversely affect customer service.
Step 1 Draw a diagram of the path protection where you will remove the node. In the diagram, identify the following:
•The node that is connected through its west port to the node that will be removed
•The node that is connected through its east port to the node that will be removed
Step 2 Complete the "DLP-E26 Log into CTC" task on page 16-39 at a node in the network where you will remove the path protection node.
Step 3 Complete the "DLP-E147 Check BLSR or Path Protection Alarms and Conditions" task on page 17-39 to verify that the path protection is free of alarms. If trouble is indicated (for example, a critical or major alarm exists), resolve the problem before proceeding. Refer to the Cisco ONS 15600 Troubleshooting Guide.
Step 4 At each path protection node, all fibers are securely connected to the appropriate ports.
Step 5 Complete the "DLP-E163 Delete Circuits" task on page 17-49 for circuits that originate or terminate in the node you will remove. (If a circuit has multiple drops, delete only the drops that terminate on the node you are deleting.)
Step 6 Complete the "DLP-E212 Verify Pass-Through Circuits" task on page 18-17 to verify that circuits passing through the target node enter and exit the node on the same STS and/or VT.
Step 7 Complete the "DLP-E96 Switch All Path Protection Circuits on a Span" task on page 16-95 for all spans connected to the node you are removing.
Traffic is not protected during a Force protection switch.
Step 8 Remove all fiber connections between the node being removed and the two neighboring nodes.
Step 9 Reconnect the fiber of the two neighboring nodes directly, west port to east port.
Step 10 Exit CTC and log back in. Refer to "DLP-E26 Log into CTC" task on page 16-39 for instructions.
Step 11 Complete the "DLP-E147 Check BLSR or Path Protection Alarms and Conditions" task on page 17-39.
Step 12 Complete the "DLP-E98 Verify Timing in a Reduced Ring" task on page 16-97.
Step 13 Complete the "DLP-E97 Clear a Switch for all Path Protection Circuits on a Span" task on page 16-96 to clear the protection switch.
Step 14 Complete the "NTP-E36 Path Protection Acceptance Test" procedure on page 5-19.
Step 15 Verify that circuits passing through the target node enter and exit the node on the same STS.
Step 16 Complete the "DLP-E186 Remove Pass-through Connections" task on page 17-66.
Step 17 Log back into a node on the reduced ring. In the CTC Login dialog box, uncheck the Disable Network Discovery check box.
Note The deleted node will appear in network view until all SDCC terminations are deleted. To delete SDCC terminations, complete the "DLP-E7 Delete a Section DCC Termination" task on page 16-10.
Step 18 Click the Circuits tab and verify that no incomplete circuits are present. If incomplete circuits appear, repeat Steps 17 and 18.
Step 19 If you delete a node that was in a login node group, you will see incomplete circuits for that node in the CTC network view. Although it is no longer part of the ring, the removed node still reports to CTC until it is no longer in a login node group. If necessary, complete the "DLP-E187 Delete a Node from a Specified Login Node Group" task on page 17-67.
Step 20 To remove another node from a path protection, repeat this procedure for the desired node.
Stop. You have completed this procedure.
NTP-E178 Add a Node to a Linear ADM
Note OC-N transmit and receive levels should be in their acceptable range as shown in the specifications for each card in the "NTP-E15 Install the Fiber-Optic Cables" procedure on page 2-9.
Note If overhead circuits exist on the network, an in-service topology upgrade procedure is service-affecting. The overhead circuits will drop traffic and have a status of PARTIAL after the upgrade is complete.
Step 1 Complete the "DLP-E26 Log into CTC" task on page 16-39 at either node in the 1+1 configuration. If you are already logged in, continue with Step 2.
Step 2 In network view, right-click the span between the two nodes where you want to add the new node. A dialog box appears.
Step 3 Select Upgrade Protection. A drop-down list appears.
Step 4 Select Terminal to Linear and a dialog box appears.
Step 5 The dialog box lists the following conditions for adding a new node:
•The terminal network has no Critical or Major alarms.
•The node that you will add has no Critical or Major alarms.
•The node has compatible software version with that of the terminal nodes.
•The node has four unused optical ports matching the speed of the 1+1 protection and no DCC has been provisioned on these four ports.
•Fiber is available to connect the added node to the terminal nodes.
If all of these conditions are met and you wish to continue with the procedure, click Next.
Note If you are attempting to add an unreachable node, you must first log in to the unreachable node using a separate CTC session and configure that node. Delete any existing protection groups as described in the "DLP-E87 Delete a 1+1 Protection Group" task on page 16-91. Delete any existing DCC terminations as described in the "DLP-E198 Delete a Section DCC Termination" task on page 17-76 or the "DLP-E199 Delete a Line DCC Termination" task on page 17-76.
Step 6 Enter the node host name or IP address, or choose the name of the new node from the drop-down list. If you type in the name, make sure it is identical to the actual node name. The node name is case sensitive.
Step 7 Click Next. The Select Protection Group Ports page appears.
Step 8 From the drop-down lists, select the working and protect ports on the new node that you want to connect to each terminal node.
Step 9 Click Next. The Re-fiber the Protected Path dialog box appears. Follow the instructions in the dialog box for connecting the fibers between the nodes.
Step 10 When the fibers are connected properly, click Next. The Update Circuit(s) on Node-Name dialog box appears.
Note The Back button is not enabled in the wizard. You can click the Cancel button at this point and choose the Yes button if you want to cancel the upgrade protection procedure. If the procedure fails after you have physically moved the fiber-optic cables, you must restore the fiber-optic cables to their original positions and verify (through CTC) that traffic is on the working path of the nodes before restarting the process. To check the traffic status, go to node view and click the Maintenance > Protection tabs. In the Protection Groups area, click the 1+1 protection group. You can see the status of the traffic in the Selected Group area.
Step 11 Click Next on the Update Circuit(s) on Node-Name page to continue with the procedure.
Step 12 The Force Traffic to Protect Path page states that it is about to force the traffic from the working to protect path for the terminal nodes. When you are ready to proceed, click Next.
Step 13 Follow each step as instructed by the wizard as it guides you through the process of refibering the working path between nodes and forcing the traffic back to the working path.
Step 14 The Force Traffic to Working Path page states that it is about to force the traffic from the protect to working path for the terminal nodes. When you are ready to proceed, click Next.
Step 15 The Completed page appears. This page is the final one in the process. Click Finish.
Stop. You have completed this procedure.
NTP-E159 Remove an In-Service Node from a Linear ADM
Note The 1+1 protection group must be unidirectional in order to delete a node from a linear ADM. If your 1+1 protection group is bidirectional, refer to "DLP-E86 Modify a 1+1 Protection Group" task on page 16-90 to change it to unidirectional. After you have removed the node from the linear group, you can change the protection setting back to bidirectional.
Step 1 Complete the "DLP-E26 Log into CTC" task on page 16-39 at a node in the network where you will remove the node.
Step 2 From the View menu, choose Go to Network View.
Step 3 Click the Alarms tab, then complete the following steps:
a. Verify that the alarm filter is not on. See the "DLP-E157 Disable Alarm Filtering" task on page 17-46 as necessary.
b. Verify that no unexplained alarms appear on the network. If unexplained alarms appear, resolve them before continuing. Refer to the Cisco ONS 15600 Troubleshooting Guide if necessary.
Step 4 Click the Conditions tab. Verify that no unexplained conditions appear on the network. If unexplained conditions appear, resolve them before continuing. Refer to the Cisco ONS 15600 Troubleshooting Guide if necessary.
Step 5 On the network map, double-click a node in the 1+1 protection group that is adjacent to the node you intend to remove from the group (the target node).
Step 6 In node view, click the Maintenance > Protection tabs.
Step 7 Initiate a Force switch on the working port:
a. In the Protection Groups area, click the 1+1 protection group.
b. In the Selected Group area, click the working port.
c. Next to Switch Commands, click Force.
d. In the Confirm Force Operation dialog box, click Yes.
e. In the Selected Group area, verify that the following appears:
•Protect port—Protect/Active [FORCE_SWITCH_TO_PROTECT] [PORT STATE]
•Working port—Working/Standby [FORCE_SWITCH_TO_PROTECT], [PORT STATE]
Step 8 Repeat Step 5 through Step 7 for the node that is connected directly to the other side of the target node.
Step 9 Remove the fiber from the working ports on the target node.
Step 10 Connect the fiber between the working ports of the two nodes that were directly connected to either side of the target node.
Step 11 On the node where you initiated a Force switch in Step 8, clear the switch:
a. Next to Switch Commands, click Clear.
b. In the Confirm Clear Operation dialog box, click Yes.
Step 12 Initiate a Force switch on the protect port:
a. In the Selected Group area, click the protect port. Next to Switch Commands, click Force.
b. In the Confirm Force Operation dialog box, click Yes.
c. In the Selected Group area, verify that the following appears:
•Protect port—Protect/Standby [FORCE_SWITCH_TO_WORKING], [PORT STATE]
•Working port—Working/Active [FORCE_SWITCH_TO_WORKING], [PORT STATE]
Step 13 From the View menu, choose Go to Network View.
Step 14 On the network map, double-click the other node where you initiated a Force switch.
Step 15 In node view, click the Maintenance > Protection tabs.
Step 16 Clear the Force switch on the working port:
a. In the Protection Groups area, click the 1+1 protection group.
b. In the Selected Group area, click the working port.
c. Next to Switch Commands, click Clear.
d. In the Confirm Clear Operation dialog box, click Yes.
Step 17 Complete Step 12 to initiate a Force switch on the protect port.
Step 18 Remove the fiber from protect ports of the target node.
Step 19 Connect the fiber between the protect ports of the two nodes on each side of the target node.
Step 20 Clear the Force switch:
a. Next to Switch Commands, click Clear.
b. In the Confirm Clear Operation dialog box, click Yes.
c. In the Selected Group area, verify the following states:
•Protect port — Protect/Standby
•Working port — Working/Active
Step 21 Repeat Step 13 through Step 16 to clear the switch on the other node.
Step 22 Exit CTC.
Step 23 Relaunch CTC at any one of the nodes that were adjacent to the target node. The nodes will now show the circuit status as DISCOVERED when checked.
Stop. You have completed this procedure.
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