Table Of Contents
Add and Remove Nodes
Before You Begin
NTP-B102 Add a BLSR Node
NTP-B213 Remove a BLSR Node
NTP-B105 Add a Path Protection Node
NTP-B106 Remove a Path Protection Node
NTP-B240 Add a Node to a Linear ADM Manually
NTP-B259 Add a Node to a Linear ADM Using the Wizard
NTP-B260 Remove an In-Service Node from a Linear ADM
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 nodes Cisco ONS 15327 nodes from bidirectional line switched rings (BLSRs), path protection configurations, and linear add-drop multiplexer (ADM) configurations.
Before You Begin
Before performing any of the following procedures, complete the "NTP-B195 Document Existing Provisioning" procedure on page 6-2. Also 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. B102 Add a BLSR Node—Complete as needed.
2. B213 Remove a BLSR Node—Complete as needed.
3. B105 Add a Path Protection Node—Complete as needed.
4. B106 Remove a Path Protection Node—Complete as needed.
5. B240 Add a Node to a Linear ADM Manually—Complete as needed to add a node to the end of a linear ADM. This procedure can be used to add a node between two linear ADM nodes, but requires that circuits be deleted and recreated. To add a node without disrupting traffic, use the following procedure.
6. B259 Add a Node to a Linear ADM Using the Wizard—Complete as needed to add a node between two linear ADM nodes.
7. B260 Remove an In-Service Node from a Linear ADM—Complete as needed to remove a node from a linear ADM without disrupting traffic.
NTP-B102 Add a BLSR Node
Caution 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 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 Slots 1 and 2 for the BLSR trunk cards.
Figure 13-1 Three-Node, Two-Fiber BLSR Before a Fourth Node Is Added
Step 2 According to local site practice, complete the "NTP-B108 Back Up the Database" procedure on page 14-2 for all the nodes in the ring.
Step 3 Verify the card installation on the new node using the "NTP-B24 Verify Card Installation" procedure on page 3-2. Verify that the OC-N cards that will be the BLSR trunk (span) cards match the BLSR optical rate. For example, if the BLSR is OC-48, the new node must have OC-48 cards installed. If the OC-N cards are not installed or the optical rates do not match the BLSR, complete the "NTP-B218 Install the Optical and Ethernet Cards" procedure on page 1-11.
Step 4 Verify that fiber is available to connect the new node to the existing nodes. See the diagram drawn in Step 1.
Step 5 Complete the "NTP-B35 Verify Node Turn Up" procedure on page 4-2. In order to have Cisco Transport Controller (CTC) visibility to the new node after it is added, 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 7.
•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: IP-address-of-the-CTC-computer-connected-to-the-new-node
•Net Mask: 255.255.255.255
•Next Hop: IP-address-of-the-Cisco-ONS-15327
•Cost: 1
Complete the "DLP-B65 Create a Static Route" task on page 16-60. To view Gateway Settings, refer to the "DLP-B249 Provision IP Settings" task on page 18-34.
Step 7 Complete the "DLP-B60 Log into CTC" task on page 16-52 at a node that is in the BLSR.
Step 8 Complete the "DLP-B298 Check the Network for Alarms and Conditions" task on page 18-64 to verify that the BLSR is free of major alarms or problems. If trouble is indicated (for example, a major alarm exists), resolve the problem before proceeding. Refer to the Cisco ONS 15327 Troubleshooting Guide for instructions.
Step 9 From the View menu, choose Go to Network View and click the Provisioning > BLSR tabs.
Step 10 On paper, record the Ring ID, Ring Type, Line Rate, and Ring Reversion.
Step 11 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 12 Log into the new node:
•If the node has a LAN connection and is displayed on the network map, from the View menu, choose Go to Other Node. Then, choose the new node from the Select Node to Go to drop-down list in the Select Node dialog box and click OK.
•If the new node is not connected to the network, log into it directly using the "DLP-B60 Log into CTC" task on page 16-52.
Step 13 Click the Alarms tab. Verify that no critical or major alarms are present, nor any facility alarms, such as loss of signal (LOS), loss of frame (LOF), alarm indication signal-line (AIS-L), signal fail (SF), and signal degrade (SD). If trouble is indicated (for example, a major alarm exists), resolve the problem before proceeding. Refer to the Cisco ONS 15327 Troubleshooting Guide as necessary.
Step 14 Using the information recorded in Steps 10 and 11 and the diagram created in Step 1, create a BLSR on the new node. Refer to the "DLP-B242 Create a BLSR on a Single Node" task on page 18-28.
Step 15 (Optional.) Create test circuits, making sure they pass through the BLSR trunk cards, and run test traffic through the node to ensure that the cards are functioning properly. Refer to the "NTP-B262 Create a Manually Routed OC-N Circuit" procedure on page 5-41 for instructions.
Step 16 Create the data communications channel (DCC) terminations on the new node. See the "DLP-B253 Provision Section DCC Terminations" task on page 18-39.
Note Creating the DCC terminations causes the SDCC Termination Failure and Loss of Signal alarms to appear. These alarms remain active until you connect the node to the BLSR.
Step 17 Complete the "DLP-B60 Log into CTC" task on page 16-52 at a BLSR node that will connect to the new node.
Step 18 Referring to the diagram created in Step 1, complete the "DLP-B303 Initiate a BLSR Force Ring Switch" task on page 19-2 on the node that will connect to the new node via its west port.
Step 19 Referring to the diagram created in Step 1, complete the "DLP-B303 Initiate a BLSR Force Ring Switch" task on page 19-2 on the node that will connect to the new node via its east port.
Step 20 Click the Alarms tab. Complete the following steps:
a. Verify that the alarm filter is not on. See the "DLP-B227 Disable Alarm Filtering" task on page 18-22 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 15327 Troubleshooting Guide for procedures as necessary.
Step 21 Following the diagram created in Step 1, remove the fiber connections from the two nodes that will connect to the new node. Complete the following steps:
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 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 4/Slot 2.
Step 22 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.
Step 23 After the newly added node appears in network view, double-click it to display the node in node view.
Step 24 Click the Provisioning > BLSR tabs.
Step 25 Click Ring Map. Verify that the new node appears on the Ring Map with the other BLSR nodes, then click OK.
Step 26 From the View menu, choose Go to Network View and verify the following:
a. Click the Provisioning > BLSR tabs. Verify that the new node appears under 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) are not present.
If the new node does not appear in the Node column, or if BLSR alarms appear, log into the new node and verify that the BLSR is provisioned on it correctly with the information from Steps 10 and 11. If the node still does not appear, or if alarms persist, refer to the Cisco ONS 15327 Troubleshooting Guide as necessary.
Step 27 Click the Circuits tab. Wait until all the circuits are discovered. The circuits that pass through the new node will be shown as incomplete.
Step 28 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 displayed in the dialog box is correct.
Step 29 If incomplete circuits still appear, refer to the Cisco ONS 15327 Troubleshooting Guide as necessary.
Step 30 Click the History tab. Verify that BLSR_RESYNC conditions are present for every node in the BLSR.
Step 31 Complete the "DLP-B194 Clear a BLSR Force Ring Switch" task on page 17-56 to remove the ring switch from the east and west BLSR lines.
Step 32 (Optional.) Complete the "NTP-B175 BLSR Acceptance Test" procedure on page 4-12.
Stop. You have completed this procedure.
NTP-B213 Remove a BLSR Node
Purpose
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This procedure removes a node from a BLSR.
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Tools/Equipment
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None
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Prerequisite Procedures
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NTP-B108 Back Up the Database, page 14-2
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Required/As Needed
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As needed
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Onsite/Remote
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Onsite
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Security Level
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Provisioning or higher
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Caution The following procedure minimizes traffic outages during node removals. You will delete all circuits that originate and terminate on the node that will be removed.
Caution 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 1 According to local site practice, complete the "NTP-B108 Back Up the Database" procedure on page 14-2 for all the nodes in the ring.
Step 2 Complete the "DLP-B60 Log into CTC" task on page 16-52 at a node on the BLSR. Do not log into the node that you will remove.
Step 3 Create a diagram of the BLSR where you will remove the node. You can draw the BLSR manually, or print it from CTC by performing the following steps:
a. From the View menu, choose Go to Network View.
b. Click the BLSR tab, click the BLSR, then click Edit.
c. 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.
d. Complete the "DLP-B138 Print CTC Data" task on page 17-28.
e. Close the BLSR window by choosing Close from the File menu.
Step 4 Referring to the BLSR diagram, identify the following:
•The node that is connected through its west port to the node that will be removed. For example, if you were removing Node 3 in Figure 13-2, Node 1 is the node connected through its west port to Node 3.
•The node that is connected via its east port to the target (removed) node. In Figure 13-2, Node 3 is the node connected via its east port to Node 4.
Figure 13-2 Four-Node, Two-Fiber BLSR Before a Node Is Removed
Step 5 Complete the "DLP-B298 Check the Network for Alarms and Conditions" task on page 18-64 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 15327 Troubleshooting Guide.
Step 6 From the View menu, choose Go to Other Node. Choose the node that you will remove and click OK.
Step 7 Click the Circuits tab. If the Scope setting is set to Network, choose Node from the Scope drop-down list in the lower right corner of the Circuits window. Make sure that the Filter button is off (not indented) to ensure that all circuits are visible.
Step 8 Delete all circuits that originate or terminate on the node. See the "DLP-B13 Delete Circuits" task on page 16-9.
Step 9 Complete the "DLP-B39 Verify Pass-Through Circuits" task on page 16-30 to verify that circuits passing through the target node enter and exit the node on the same synchronous transport signal (STS) and/or Virtual Tributary (VT).
Step 10 From the View menu, choose Go to Network View.
Step 11 Referring to the diagram created in Step 3, complete the "DLP-B303 Initiate a BLSR Force Ring Switch" task on page 19-2 at each node that connects to the target node to force traffic away from the target node. You must perform a Force switch at each port connected to the target node. For example, in Figure 13-2, you would perform a Force switch on the east port of Node 4 and the west port of Node 1.
Step 12 Click the Alarms tab. Complete the following steps:
a. Verify that the alarm filter is not on. See the "DLP-B227 Disable Alarm Filtering" task on page 18-22 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 15327 Troubleshooting Guide for procedures as necessary.
Step 13 Remove the fiber connections between the target node and the two neighboring nodes.
Step 14 Reconnect the fiber of the two neighboring nodes directly, west port to east port.
Step 15 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 16 On the removed node, complete the "DLP-B196 Delete a BLSR from a Single Node" task on page 17-57 to remove the BLSR from the former BLSR trunk card.
Step 17 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.) Delete the node from the login node group:
a. From the CTC Edit menu, choose Preferences.
b. In the Preferences dialog box, click the Login Node Groups tab.
c. Click the login node group tab containing the node you want to remove.
d. Click the node you want to remove, then click Remove.
e. Click OK.
Step 18 Click the History tab. Verify that the BLSR_RESYNC condition is present for every node in the BLSR.
Step 19 Complete the "DLP-B194 Clear a BLSR Force Ring Switch" task on page 17-56 for both switches.
Step 20 Complete the "DLP-B195 Verify Timing in a Reduced Ring" task on page 17-56.
Step 21 (Optional.) Complete the "NTP-B175 BLSR Acceptance Test" procedure on page 4-12.
Stop. You have completed this procedure.
NTP-B105 Add a Path Protection Node
Purpose
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This procedure adds a node to a path protection.
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Tools/Equipment
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None
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Prerequisite Procedures
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Cards must be installed and node turn-up procedures completed on the node that will be added to the path protection. See Chapter 1, "Install Hardware," and Chapter 3, "Turn Up Node."
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Required/As Needed
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As needed
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Onsite/Remote
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Onsite
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Security Level
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Provisioning or higher
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Step 1 According to local site practice, complete the "NTP-B108 Back Up the Database" procedure on page 14-2 for all the nodes in the ring.
Step 2 Verify the card installation on the new node. See the "NTP-B24 Verify Card Installation" procedure on page 3-2.
Step 3 Verify that the OC-N cards that will serve as the path protection trunk (span) cards match the path protection optical rate of the trunk cards to which the new node will be connected. For example, if the adjacent nodes have OC-48 line cards, the new node must have OC-48 cards installed. If the OC-N cards are not installed or the rate does not match the rate of the adjacent node trunk cards, complete the "NTP-B218 Install the Optical and Ethernet Cards" procedure on page 1-11 to install them.
Step 4 Verify that fiber is available to connect the new node to the existing nodes.
Step 5 Complete the "NTP-B35 Verify Node Turn Up" procedure on page 4-2.
Step 6 Log into a node in the path protection where you want to add a node. See the "DLP-B60 Log into CTC" task on page 16-52 for instructions. In order to have CTC visibility to the new node after it is added, you must be an authorized user on the node and you must have IP connectivity to the node.
Step 7 Complete the "DLP-B298 Check the Network for Alarms and Conditions" task on page 18-64 to verify that the path protection is free of major alarms or problems. If trouble is indicated (for example, a major alarm exists), resolve the problem before proceeding. Refer to the Cisco ONS 15327 Troubleshooting Guide.
Step 8 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, choose the new node from the Select Node to Go to drop-down list in the Select Node dialog box and click OK.
•If the new node is not connected to the network, log into it directly using the "DLP-B60 Log into CTC" task on page 16-52.
Step 9 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 15327 Troubleshooting Guide for instructions.
Step 10 Check to see if the following conditions are met:
•The node is on the same subnet as other path protection nodes.
•The node is not provisioned as an end network element (ENE) (refer to the "NTP-B169 Set Up CTC Network Access" procedure on page 3-5 for information).
•A CTC computer will directly connect to the node while other CTC computers are directly connected to other path protection nodes.
If the conditions are met, complete the following steps. If not, continue with Step 11.
a. Click the Provisioning > Network > General tabs. View the IP Address and Net/Subnet Mask Length fields to verify that the node is on the same subnet as other path protection nodes.
b. Click the Static Route tab and click Create.
c. In the Create Static Route dialog box, enter the following settings:
•Destination IP address: Local-PC-IP-address
•Net Mask: 255.255.255.255
•Next Hop: IP-address-of-the-Cisco-ONS-15327
•Cost: 1
d. Click OK.
Step 11 (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-B262 Create a Manually Routed OC-N Circuit" procedure on page 5-41 and the "NTP-B62 Test OC-N Circuits" procedure on page 5-47 for information.
Step 12 Create the DCC terminations on the new node. See the "DLP-B253 Provision Section DCC Terminations" task on page 18-39.
Step 13 From the View menu, choose Go to Network View.
Step 14 Complete the "DLP-B197 Initiate a Path Protection Force Switch" task on page 17-58 to switch traffic away from the span that will be broken to connect to the new node.
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 the fibers that are connected to the new node.
Step 17 Log out of CTC and log back into a node in the network.
Step 18 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 for a few minutes to allow all the nodes to appear.
Step 19 Click the Circuits tab and wait for all the circuits to appear, including spans. Count the number of incomplete circuits.
Step 20 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 in the dialog box is correct.
Step 21 Click the Circuits tab and verify that no incomplete circuits appear.
Step 22 Complete the "DLP-B198 Clear a Path Protection Switch" task on page 17-59.
Step 23 (Optional.) Complete the "NTP-B177 Path Protection Acceptance Test" procedure on page 4-19.
Stop. You have completed this procedure.
NTP-B106 Remove a Path Protection Node
Purpose
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This procedure removes a node from a path protection.
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Tools/Equipment
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None
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Prerequisite Procedures
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NTP-B108 Back Up the Database, page 14-2
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Required/As Needed
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As needed
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Onsite/Remote
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Onsite
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Security Level
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Provisioning or higher
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Caution The following procedure minimizes traffic outages during node removals.
Caution If you remove a node that is the only BITS timing source for the ring, you also remove the only source of synchronization for all the nodes in that ring. Circuits that connect to other networks that are synchronized to a Stratum 1 clock 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 target node)
•The node that is connected through its east port to the target node
Step 2 Log into a node in the network where you want to remove a path protection node. See the "DLP-B60 Log into CTC" task on page 16-52 for instructions.
Step 3 Complete the "DLP-B298 Check the Network for Alarms and Conditions" task on page 18-64 to verify that the path protection is free of alarms. If trouble is indicated (for example, a major alarm exists), resolve the problem before proceeding. Refer to the Cisco ONS 15327 Troubleshooting Guide for instructions.
Step 4 Complete the "DLP-B13 Delete Circuits" task on page 16-9 for circuits that originate or terminate in the target node. (If a circuit has multiple drops, delete only the drops that terminate on the node you are deleting.)
Step 5 Complete the "DLP-B39 Verify Pass-Through Circuits" task on page 16-30 to verify that circuits passing through the target node enter and exit the node on the same STS and/or VT.
Step 6 Complete the "DLP-B197 Initiate a Path Protection Force Switch" task on page 17-58 for all spans connected to the node you are removing.
Step 7 Remove all fiber connections between the target node and the two neighboring nodes.
Step 8 Reconnect the fiber of the two neighboring nodes directly, west port to east port.
Note If you delete a node that was in a login node group, you will see incomplete circuits for that node in 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.)
Step 9 Exit CTC and log back in. See the "DLP-B60 Log into CTC" task on page 16-52 for instructions.
Step 10 Log into each newly connected node and open the Alarms tab. Verify that the trunk cards are free of alarms. Resolve any alarms before proceeding. Refer to the Cisco ONS 15327 Troubleshooting Guide as necessary.
Step 11 Complete the "DLP-B195 Verify Timing in a Reduced Ring" task on page 17-56.
Step 12 Complete the "DLP-B198 Clear a Path Protection Switch" task on page 17-59.
Step 13 Click the Circuits tab and verify that no incomplete circuits are present.
Step 14 (Optional.) Complete the "NTP-B177 Path Protection Acceptance Test" procedure on page 4-19.
Stop. You have completed this procedure.
NTP-B240 Add a Node to a Linear ADM Manually
Purpose
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This procedure adds a single ONS 15327 node to the end of an ONS 15327 linear ADM network. If the linear ADM carries traffic, you cannot add a node between two linear ADM nodes using this procedure unless you delete and recreate the circuits. To avoid deleting and recreating the circuits, complete the "B259 Add a Node to a Linear ADM Using the Wizard" procedure to add a node between two linear ADM nodes.
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Tools/Equipment
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None
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Prerequisite Procedures
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NTP-B38 Provision a Linear ADM Network, page 4-6
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Required/As Needed
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As needed
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Onsite/Remote
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Onsite
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Security Level
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Provisioning or higher
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Note Optical transmit and receive levels should be in their acceptable range as shown in the specifications section for each card in Table 1-1 on page 1-15.
Note In a linear ADM configuration, two OC-N cards in 1+1 protection are connected to two OC-N cards in 1+1 protection on a second node. On the second node, two more OC-N cards are connected to a third node. The third node can be connected to a fourth node, and so on, depending on the number of nodes in the linear ADM. 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 linear ADM node connects to Slot 5 on the second linear ADM node for the working path, and Slot 6 connects to Slot 6 for the protect path. The working OC-N ports have DCC terminations, and the OC-N cards are in a 1+1 protection group.
Step 1 According to local site practice, complete the "NTP-B108 Back Up the Database" procedure on page 14-2 for all the nodes in the ring.
Step 2 At the new node, complete one of the following procedures:
•If the node has not been turned up, complete all procedures in Chapter 3, "Turn Up Node."
•If the node has been turned up, complete the "NTP-B35 Verify Node Turn Up" procedure on page 4-2.
Step 3 Verify that the new node has two OC-N cards with the same rate as the linear ADM. If the OC-N cards are not installed, complete the "NTP-B218 Install the Optical and Ethernet Cards" procedure on page 1-11.
Step 4 Complete "NTP-B170 Create 1+1 Protection Groups" procedure on page 3-8 for the two OC-N cards that will connect to the linear ADM node.
Step 5 Complete the "DLP-B253 Provision Section DCC Terminations" task on page 18-39 for the working OC-N card at the new node. Make sure to set the Port State in the Create SDCC Termination dialog box to IS. (Do not create a DCC termination on the protect card.)
Note DCC failure alarms appear until you create DCC terminations in the linear ADM node and connect the fiber during Step 12.
Step 6 Complete the "DLP-B60 Log into CTC" task on page 16-52 at the linear ADM node that will connect to the new node. If you are already logged in, continue with Step 7.
Step 7 Complete the "DLP-B298 Check the Network for Alarms and Conditions" task on page 18-64.
Step 8 Install the OC-N cards that will connect to the new node. See "NTP-B218 Install the Optical and Ethernet Cards" procedure on page 1-11 for instructions. If the cards are already installed, continue with Step 9.
Step 9 Connect the working card at the existing linear ADM node to the working card at the new node. Refer to the "DLP-B42 Install Fiber-Optic Cables in a 1+1 Configuration" task on page 16-30 for instructions.
Step 10 Connect the protect card at the existing linear ADM node to the protect card at the new node.
Step 11 Complete "NTP-B170 Create 1+1 Protection Groups" task on page 3-8 for the two OC-N cards that connect to the new node.
Step 12 Complete the "DLP-B253 Provision Section DCC Terminations" task on page 18-39 for the working OC-N card that connects to the working card on the new node. Make sure to set the Port State in the Create SDCC Termination dialog box to IS. (Do not create a DCC termination for the protect card.)
Step 13 From the View menu, choose Go to Network View. Verify that the newly created linear ADM configuration is correct. If so, two green span lines should appear between each linear node.
Step 14 Complete the "DLP-B298 Check the Network for Alarms and Conditions" task on page 18-64 to verify that no unexpected alarms or conditions are present.
Stop. You have completed this procedure.
NTP-B259 Add a Node to a Linear ADM Using the Wizard
Purpose
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This procedure adds a node between two nodes in a 1+1configuration without losing traffic.
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Tools/Equipment
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None
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Prerequisite Procedures
|
The in-service topology upgrade procedure requires that the node to be added is reachable (has IP connectivity with CTC).
If the PC running CTC and the ONS 15327s are not at the same location, two technicians who can communicate with each other during the upgrade might be needed.
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Required/As Needed
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As needed
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Onsite/Remote
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Onsite
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Security Level
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Provisioning or higher
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Note OC-N transmit and receive levels should be in their acceptable range as shown in the specifications for each card in Table 1-1 on page 1-15.
Note If overhead circuits exist on the network, an In-Service Topology Upgrade 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-B60 Log into CTC" task on page 16-52 at a node on the linear ADM. 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 the new node. The Select Upgrade Protection dialog box appears.
Step 3 Select Terminal to Linear in the drop-down list. The first page of the wizard, Upgrade Protection: Terminal to Linear, appears.
Step 4 The Upgrade Protection: Terminal to Linear page lists the following conditions that must be met before 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 a 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 "DLP-B155 Delete a 1+1 Protection Group" task on page 17-36. Delete any existing DCC terminations as described in the "DLP-B27 Delete a Section DCC Termination" task on page 16-23 task and the "DLP-B28 Delete a Line DCC Termination" task on page 16-24.
Step 5 Select the name of the new node from the drop-down list. If the node you want to add is not in the list, you can enter the name. If you enter the name, make sure it is identical to the actual node name. The node name is case-sensitive.
Step 6 Click Next. The Select Protection Group Ports page appears.
Step 7 Select the working and protect ports on the new node that you want to connect to each terminal node from the drop-down lists.
Step 8 Click Next. The Re-fiber the Protected Path dialog box appears.
Step 9 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 the original positions and verify (through CTC) that traffic is on the working path of the nodes before restarting the process. To check 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 re-fibering 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-B260 Remove an In-Service Node from a Linear ADM
Purpose
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This procedure removes a single ONS 15327 from a linear ADM with disrupting traffic.
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Tools/Equipment
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None
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Prerequisite Procedures
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NTP-B38 Provision a Linear ADM Network, page 4-6
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Required/As Needed
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As needed
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Onsite/Remote
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Onsite
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Security Level
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Provisioning or higher
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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 the "DLP-B154 Modify a 1+1 Protection Group" task on page 17-35 to change it to unidirectional. After you have removed the node from the linear group you can then change the protection setting back to bidirectional.
Step 1 Complete the "DLP-B60 Log into CTC" task on page 16-52 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. Complete the following steps:
a. Verify that the alarm filter is not on. Refer to the "DLP-B227 Disable Alarm Filtering" task on page 18-22 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 15327 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 15327 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 of 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.
a. Next to Switch Commands, click Clear.
b. 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:
c. Next to Switch Commands, click Clear.
d. In the Confirm Clear Operation dialog box, click Yes.
e. 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.
