Table of Contents

Maintenance

This chapter describes procedures needed to maintain the Cisco ONS 15454 SDH, including:

4.1 Air Filter Inspection

The ONS 15454 SDH contains a reusable filter that you should remove and visually inspect approximately every 30 days, depending on the cleanness of the operating environment. For more information about filter brackets and air filter installation, see Chapter 1 in the Cisco ONS 15454 SDH Installation and Operations Guide.

The air filter is made of gray, open-celled, polyurethane foam that is specially coated to provide fire and fungi resistance. Figure 4-1 illustrates a reusable fan tray air filter in an external filter bracket.

Procedure: Inspect and Clean Reusable Air Filter

Step 2   Visually inspect the filter for dirt and dust.

Step 3   If the air filter has a concentration of dirt and dust, vacuum the filter or wash the filter under a faucet with a light detergent.

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Note    If possible, clean the filter outside of the operating environment to avoid releasing dirt and dust near the equipment.

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Step 4   If you washed the filter, allow it to air-dry at least 8 hours (or use spare filter).

Caution    Do not put a damp filter back in the ONS 15454 SDH.

Step 5   Slide the filter to the back of the brackets.

4.2 System Reset

You can reset the ONS 15454 SDH TCC-I cards by using the Cisco Transport Controller (CTC) software or by physically resetting a TCC-I card (card pull). A software-initiated reset reboots the TCC-I card and reloads the operating system and the application software. If a card pull is performed, it carries out these tasks and temporarily powers down the TCC-I card, clearing all buffer memory.

You can initiate a software reset for an active TCC-I card or a standby TCC-I card without affecting traffic. But a card pull should only be performed on a standby TCC-I. If you need to pull an active TCC-I card, first you should initiate a software reset on a card to put it into standby mode.

Procedure: Initiate a Software Reset

Step 2   Right-click the TCC-I card to reveal a pull-down menu.

Step 3   Click Reset Card. (See Figure 4-2).

Step 4   Click Yes in the dialog box when the "Are You Sure?" prompt appears.

Step 5   Click OK in the dialog box when the "Lost connection to node, changing to Network View" prompt appears.

Step 6   Confirm that the TCC-I card is in standby mode after the reset.

Procedure: Reset the TCC-I using a Card Pull

Note   To determine whether the TCC-I card is in active mode or standby mode, view it in the CTC software and position the cursor over the TCC-I card graphic to display the status.

Caution   Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.

Step 2   When the TCC-I is in standby mode, unlatch the top and bottom ejector levers on the TCC-I card.

Step 3   Pull the card outward from the slot until the lighted LEDs turn off.

Step 4   Wait 30 seconds. Reinsert the card and close the ejector levers.

Note   The TCC-I card takes several minutes to reboot and display the amber standby LED after rebooting.

Note   During bootup of the reinserted TCC-I card, the FMEC cards in the system will not be visible in the CTC software. They will be visible in the software again after the TCC-I card has finished booting.

Note   When a second TCC-I card is inserted into the shelf, it will synchronize its software, its backup software, and its database with the active TCC-I. If its software version does not match the version on the active TCC-I, the newly inserted TCC-I will copy from the active TCC-I. This copying will take about 15 to 20 minutes. If its backup software version does not match the version on the active TCC-I, the newly inserted TCC-I will copy the backup software from the active TCC-I. This copying, again, will take about 15 to 20 minutes. Copying the database from the active TCC-I will take about 3 minutes. So, depending on the software existing in the new TCC-I, booting it up will take between 3 and about 40 minutes.

4.3 Database Backup and Restoration

When dual TCC-I cards are installed in the ONS 15454 SDH, each TCC-I card hosts a separate database. If the working TCC-I card database fails, the protect card database is available. You can store a backup version of the database on a CTC software workstation. This off-system storage should be part of regular ONS 15454 SDH maintenance at approximately weekly intervals. It should also be performed to prepare an ONS 15454 SDH for disasters.

Note   E100-2 cards lose traffic for approximately 30 seconds when an ONS 15454 SDH database is restored. The CARLOSS alarm appears and clears during this process. The traffic outage happens during the spanning-tree reconvergence.

Note   If you are restoring the database on multiple nodes, wait five minutes between each database restoration.

Note   The following parameters are not backed up and restored: node name, IP address, mask and gateway, and IIOP port. If you change the node name and then restore a backed up database with different node names, the circuits will map to the new node name. Cisco recommends keeping a record of the old and new node names.

Procedure: Back up the Database

Step 2   Click the Maintenance > Database tabs (Figure 4-3).

Step 3   Click Backup.

Step 4   Save the database to the workstation hard drive or to network storage. Use an appropriate file name with the file extension db, for example, "database.db."

Step 5   Click Save.

Step 6   Click OK in the Backup Database dialog box (Figure 4-4).

Procedure: Restore the Database

Step 2   Click the Maintenance > Database tabs (Figure 4-5).

Step 3   Click Restore.

Step 4   Locate the database file stored on the workstation hard drive or in network storage area.

Step 5   Click the database file to highlight it.

Step 6   Click Open. The DB Restore dialog box (Figure 4-6) appears.

Caution   Traffic will be affected when you restore a local database from another node.

Step 7   Click Yes. The Restore Database dialog box (Figure 4-7) monitors the file transfer.

Step 8   Wait for the selected file to be completely transferred to the TCC-I card.

Step 9   Click OK in the dialog box when the "Lost connection to node, changing to Network View" prompt appears. Wait for the node to reconnect.

4.4 Card Replacement

To replace an ONS 15454 SDH card with another card of the same type, you do not need to change the database. Pull the old card and replace it with a new one. To replace a card with a different-type card, pull the card and replace it with the new one. Then delete the original card in the CTC software.

Note   An improper removal (IMPROPRMVL) alarm occurs whenever a card pull is performed unless the card is deleted in the CTC software first. The alarm will clear after the card replacement is complete.

Caution   Always use an ESD wristband when working with an ONS 15454 SDH. Plug the wristband cable into the ESD jack located on the mid-right outside of the shelf assembly.

Note   Traffic can be interrupted when you pull an active card from the ONS 15454 SDH. Use caution when replacing cards and verify that only inactive or standby cards are being replaced. If an active card needs to be replaced, switch it to standby mode as shown in the "Replace an In-Service XC10G Card" section, the "Replace an In-Service STM-N Card" section, or the "Replace an In-Service Electrical Card (E1-N-14, DS3i-N-12, or E3-12)" section, before pulling the card from the node.

Procedure: Replace an In-Service XC10G Card

Caution   Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.

Note   Resetting an XC10G card can cause a linear 1+1 STM-N protection switch or an MS-SPRing protection switch.

Note   Traffic can be interrupted when you pull an active card from the ONS 15454 SDH. Use caution when replacing cards and verify that only inactive or standby cards are being replaced. If an active card needs to be replaced, follow the procedure to switch the XC10G card to standby mode before you pull the card from the node.

<------East [Node A] West------East [Node B] West------East [Node C] West------>

In a 1+1 protection scheme, place a lockout on the protect card and verify that traffic is traveling over the working span before setting the lockout.

Step 2   Determine which XC10G card is active. The active card ACT/STBY LED is green. The standby card ACT/STBY LED is yellow.

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Note    You can determine whether the XC10G card is in active mode or standby mode by viewing it in the CTC software and positioning the cursor over the XC10G card graphic to display the status.

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Step 3   Switch the active XC10G card to standby:

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Note    After the active XC10G goes into standby mode, the original standby slot becomes active. This causes the former standby card ACT/STBY LED to become green.

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Step 4   Pull the new standby XC10G card from the ONS 15454 SDH.

Step 5   Insert the replacement XC10G card into the empty slot. The replacement card boots up and becomes ready for service after approximately one minute.

Step 6   Release the protection lockouts.

Procedure: Replace a TCC-I Card

Caution   Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.

Step 2   Pull the TCC-I card to be replaced from the ONS 15454 SDH.

Step 3   Insert the replacement TCC-I card into the empty slot. The replacement card boots up and becomes ready for service after about three to fourty minutes.

Note   When a second TCC-I card is inserted into the shelf, it will synchronize its software, its backup software, and its database with the active TCC-I. If its software version does not match the version on the active TCC-I, the newly inserted TCC-I will copy from the active TCC-I. This copying will take about 15 to 20 minutes. If its backup software version does not match the version on the active TCC-I, the newly inserted TCC-I will copy the backup software from the active TCC-I. This copying, again, will take about 15 to 20 minutes. Copying the database from the active TCC-I will take about 3 minutes. So, depending on the software existing in the new TCC-I, booting it up will take between 3 and about 40 minutes.

Procedure: Reset an STM-N Card

Note   An STM-N reset can cause a linear 1+1 STM-N protection switch or an MS-SPRing protection switch.

Note   Traffic can be interrupted if you pull an active card from the ONS 15454 SDH. Use caution when replacing cards and verify that only inactive or standby cards are being replaced. If an active card needs to be replaced, follow the procedure to switch the STM-N card to standby mode before you pull the card from the node.

Warning Class I (21 CFR 1040.10 and 1040.11) and Class 1M (IEC 60825-1 2001-01) laser products.

Warning Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do not stare into the beam or view directly with optical instruments. Viewing the laser output with certain optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm may pose an eye hazard. Use of controls or adjustments or performance of procedures other than those specified may result in hazardous radiation exposure.

The STM-N card should be replaced if a red FAIL LED appears.

Take these precautions before initiating an STM-N card reset to avoid causing a linear 1+1 or MS-SPRing protection switch:

Step 2   Ensure that the working (active) span is carrying error-free traffic without FAIL alarms or SF alarms.

Step 3   Perform a lockout on the protection span in the CTC software before initiating an STM-N card reset. In an MS-SPRing, place a lockout on the East and West node cards adjacent to the XC10-G switch node. For example, if you are switching the XC10-G on Node B, place a lockout on the Node A West card and on the Node C East card. You do not need to place lockouts on Node B. Before settingthe lockout, verify that the MS-SPRing is not switched. Traffic can be lost if the MS-SPRing is switched when the lockout is set.

<------East [Node A] West------East [Node B] West------East [Node C] West------>

In a 1+1 protection scheme, place a lockout on the protect card and verify that traffic is traveling over the working span before setting the lockout.

Procedure: Replace an In-Service STM-N Card

Caution   Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this, perform an external switch if a switch has not already occurred. Consult the ONS 15454 SDH Installation and Operations Guide for information.

Caution   Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.

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Note    You can determine whether the card is in active mode or standby mode by viewing it in the CTC software and positioning the cursor over the card graphic to display the status.

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Step 2   Switch the active STM-N card to standby:

a. In the node view, select the Maintenance > STM Cards tabs.

b. From the Cross Connect Cards menu, choose Switch.

c. Click Yes on the Confirm Switch dialog box.

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Note   After the working STM-N card goes into protection, the protection slot becomes working. This causes the former working card ACT LED to switch off.

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Step 3   Pull the protection STM-N card from the ONS 15454 SDH.

Step 4   Insert the replacement STM-N card into the empty slot. The replacement card boots up and becomes ready for service after approximately one minute. After this procedure the card is ready for protection function.

Procedure: Reset an Electrical Card (E1-N-14, DS3i-N-12, or E3-12)

Note   An electrical card reset can cause a linear 1:1 or 1:N protection switch or an MS-SPRing protection switch.

Note   Traffic can be interrupted if you pull an active card from the ONS 15454 SDH. Use caution when replacing cards and verify that only inactive or standby cards are being replaced. If an active card needs to be replaced, follow the procedure to switch the electrical card to standby mode before you pull the card from the node.

The cards should be replaced when the red FAIL LED appears.

Take these precautions before performing an electical card reset to avoid causing a linear 1:1, 1:N or MS-SPRing protection switch:

Step 2   Ensure that the working span is carrying error-free traffic without SF alarms.

Step 3   Place a lockout on the protection span before initiating an electrical card reset. In an MS-SPRing, place a lockout on the East and West cards of the nodes adjacent to the electrical card switch node; for example, to switch the electrical card on Node B, place the lockout on the West card of Node A and on the East card of Node C. No lockout is necessary on Node B. Before the lockout is set, verify that the MS-SPRing is not switched. Traffic can be lost if a lockout is set when the MS-SPRing is switched.

<------East [Node A] West------East [Node B] West------East [Node C] West------>

In a 1:1 protection scheme, place a lockout on the protect card and verify that traffic is traveling over the working span before setting the lockout.

Procedure: Replace an In-Service Electrical Card (E1-N-14, DS3i-N-12, or E3-12)

Caution   Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.

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Note    You can determine whether the card is in active mode or standby mode by viewing it in the CTC software and positioning the cursor over the card graphic to display the status.

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Step 2   Switch the active card to standby:

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Note    A minor alarm appears on the manually-switched slot. After the active electrical card goes into standby, the original standby slot becomes active. This causes the former standby card ACT/STBY LED to become green.

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Step 3   Pull the new standby card from the ONS 15454 SDH.

Step 4   Insert the replacement card into the empty slot. The replacement card boots up and becomes ready for service after approximately one minute. Release the protection lockout.

Procedure: Replace an FMEC Card

Caution   Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.

Note   Traffic will be interrupted if active FMEC (E1, E3/DS3, DS1/E1) cards are removed from the ONS 15454 SDH.

Note   To disconnect the cable from the FMEC, pull the ring of the connector using the coaxial removal tool.

Step 2   Pull the damaged FMEC card from the shelf assembly.

Step 3   Insert the new FMEC card into the empty slot.

Step 4   Gently push the cable connector down until the cable connector slides into the FMEC connector with a click. The replacement card is now ready for traffic. The traffic starts automatically.

Procedure: Replace an MIC-A/P Card or MIC-C/T/P Card

Caution   Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.

Note   Pulling an active MIC-A/P card or MIC-C/T/P card from the ONS 15454 SDH causes alarms. Traffic is affected if an active MIC-A/P card or an active MIC-C/T/P card is replaced while there is no redundant power supply.

Note   To disconnect the cable from the FMEC, pull the ring of the connector using the coaxial removal tool.

Step 2   Pull the damaged MIC-A/P card or MIC-C/T/P card from the shelf assembly.

Step 3   Insert the new MIC-A/P card or MIC-C/T/P card into the empty slot

Step 4   Gently push the cable with the 1.0/2.3 miniature coax connector down until the cable connector slides into the 1.0/2.3 miniature coax connector with a click.

Step 5   Gently push the other cable connector down until the cable connector slides into the 1.0/2.3 miniature coax connector. The replacement card is ready for operation.

Note   For proper system operation, both the MIC-A/P card and the MIC-C/T/P card must be installed in the shelf.

4.5 Span Upgrade

A span includes the set of optical fiber ("lines") between two ONS 15454 SDH nodes. A span upgrade raises theSTM-N signal transmission rate of all the lines constituting the spans. It is done by coordinated line upgrades that move traffic from lower-rate optical card(s) to higher rate optical card(s). No other span attributes are changed. You can upgrade the following ONS 15454 SDH cards in an in-service span:

When a span is upgraded, the higher-rate line card must replace the lower-rate card in the same slot. If the spans to be upgraded are part of a ring topology, all spans in the ring must be upgraded. The protect configuration (two-fiber MS-SPRing, four-fiber MS-SPRing, MSP, or 1+1) that was used with lower-rate optical card is retained in the higher-rate upgrade.

Span upgrades can be performed using the CTC software upgrade wizard, or they can be performed manually. To use the wizard, follow the procedure in the "Span Upgrade Wizard" section. To upgrade a span manually, follow the procedures in the "Manual Span Upgrades" section.

Note   Span upgrades do not change SDH topologies. For example, a 1+1 scheme is not upgraded to a two-fiber MS-SPRing during a span upgrade. See the "SDH Topologies" chapter in the Cisco ONS 15454 SDH Installation and Operations Guide for topology upgrade procedures.

4.5.1 Span Upgrade Wizard

The Span Upgrade Wizard automates all steps in the manual span upgrade procedure (MS-SPRing, MSP, and 1+1). The Wizard can upgrade both lines on one side of a four-fiber MS-SPRing or both lines of a 1+1 group. The Wizard upgrades MSPs and two-fiber MS-SPRings one line at a time. The Span Upgrade Wizard requires that spans have DCC enabled.

Note   The CTC software Span Upgrade Wizard only supports STM-N span upgrades. It does not support electrical card upgrades.

Note   During the span upgrade, minor alarms and conditions will occur and clear automatically. However, no service-affecting alarms (SA, Major, or Critical) should be expected. If any service-affecting alarms occur, Cisco recommends backing out of the procedure.

Procedure: Span Upgrade Wizard

Note   If an abnormal error occurs while you are using the Span Upgrade Wizard, you must exit the wizard and initiate the manual procedure to finish the upgrade, or you must back out of the procedure. If you continue the upgrade manually, examine the standing conditions and alarms to identify the stage where the wizard failure occurred. If it is necessary to back out of the procedure while using the wizard, it can be carried out by downgrading. This is performed exactly as the procedure for upgrading, but you select lower-rate cards instead of higher-rate cards.

Note   If you are upgrading a 1+1 group, upgrade the protect line first, regardless which line is active.

Note   You cannot downgrade if circuits exist on the STM-Ns that would be removed (i.e. the higher STM-Ns).

Step 2   In network view, right-click the span to be upgraded.

Step 3   Choose Span Upgrade from the pull-down menu (Figure 4-8).

A Span Upgrade Dialog box appears showing Step 1 of the wizard (Figure 4-9).

Step 4   Select the upgrade card from the pull-down menu and click Next>. A Span Upgrade Dialog box appears showing Step 2 of the wizard (Figure 4-10).

Step 5   Click Next> to send a force switch command, forcing the traffic onto the working lines. Or click <Back to return to the previous dialog box. A Span Upgrade Dialog box appears showing Step 3 of the wizard (Figure 4-11).

Note   This is the only step in the Span Upgrade Wizard that has the <Back button enabled.

Step 6   Wait 5 to 10 seconds for the command to take effect and click Next>. An error dialog box appears if more time is needed. A Span Upgrade Dialog box appears showing Step 4 of the wizard (Figure 4-12).

Step 7   Remove the fiber from the lower-rate card and ensure that traffic is still running.

Step 8   Remove the lower rate STM-N cards from the protect slots and click Next>. A Span Upgrade Dialog box appears showing Step 4 of the wizard (Figure 4-13).

Step 9   Install the higher-rate STM-N cards into the protect slots.

Step 10   Install the fiber and click Next>. The Span Upgrade Dialog box appears showing Step 5 of the wizard (Figure 4-14).

Step 11   Click Next> to send a force switch command, forcing traffic to the protect lines. The Span Upgrade Dialog box appears showing Step 7 of the wizard (Figure 4-15).

Step 12   Wait 5 to 10 seconds for the command to take effect and click Next>. An error dialog box appears if more time is needed. The Span Upgrade Dialog box appears showing Step 8 of the wizard (Figure 4-16).

Step 13   Remove the fiber and ensure that traffic is still running.

Step 14   Remove the lower-rate STM-N cards from the working slots and click Next>. The Span Upgrade Dialog box appears showing Step 9 of the wizard (Figure 4-17).

Step 15   Insert the higher-rate STM-N cards in the working slots.

Step 16   Install the fiber and click Next>. The Span Upgrade Dialog box appears showing Step 10 of the wizard (Figure 4-18).

Step 17   Click Next> to send a Clear command. The Span Upgrade Dialog box appears showing Step 11 of the wizard (Figure 4-19).

Step 18   Click Finish.

4.5.2 Manual Span Upgrades

The manual upgrade procedures require at least two technicians (one at each end of the span). The technicians must be able to communicate with each other during the upgrade. The upgrade procedures do not affect service. They cause no more than three switches with switch times of less than 50 ms.

During upgrade, some minor alarms and conditions occur and clear automatically. However, no service-affecting alarms (SA, Major, or Critical) should be expected. If any service-affecting alarms occur, Cisco recommends backing out of the procedure. Choose from four manual span upgrade options:

Procedure: Manually Upgrade a Span on a Two-Fiber MS-SPRing

Note   All lines connecting the nodes in an MS-SPRing must be upgraded before the added bandwidth is available.

Step 2   Click the Retrieve Conditions. Ensure no alarms or abnormal conditions are present on the span to be upgraded.

Step 3   Apply a forced switch on the ports that you will upgrade.

Step 4   Remove the fiber from both ends and ensure that traffic is still running.

Step 5   Pull the STM-N cards from both nodes.

Step 6   In node view of the software, right-click each STM-N card slot and choose Change Card.

Step 7   In the Change Card dialog box, choose the new STM-N card type.

Step 8   Click OK.

Step 9   Insert the new STM-N cards in both nodes.

Step 10   Install the fiber in both nodes.

Step 11   Wait for the IMPROPRMVL alarm to clear and for the cards to become active.

Step 12   If cards on each side of the line have been successfully upgraded, remove the forced switch:

Step 13   Repeat these steps for each line in the MS-SPRing.

Procedure: Manually Upgrade a Span on a Four-Fiber MS-SPRing

When upgrading a four-fiber MS-SPRing, you can upgrade both working and protect lines with a single force switch.

Note   All lines in an MS-SPRing must be upgraded before added bandwidth will be available.

Step 2   Click Retrieve Conditions. Ensure no alarms or abnormal conditions are present on the span to be upgraded.

Step 3   Apply a forced switch on the ports that you will upgrade:

Step 4   Remove the fiber from both ends and ensure that traffic is still running.

Step 5   Pull the STM-N cards from both nodes.

Step 6   In node view, right-click each STM-N card slot and choose Change Card.

Step 7   In the Change Card dialog box, choose the new STM-N card type.

Step 8   Click OK.

Step 9   Insert the new STM-N cards in both nodes.

Step 10   Install the fiber at both ends.

Step 11   Wait for the IMPROPRMVL alarm to clear and for the cards to become active.

Step 12   If cards on each side of the line have been successfully upgraded, remove the forced switch:

Step 13   Repeat these steps for each line in the MS-SPRing.

Procedure: Manually Upgrade a Span on an MSP

Step 2   Click the Retrieve Conditions button. Ensure no alarms or abnormal conditions are present on the span to be upgraded.

Step 3   Apply a forced switch on the ports that you will upgrade:

Step 4   Remove the fiber from both ends and ensure that traffic is still running.

Step 5   Pull the STM-N cards from both nodes.

Step 6   In node view, right-click each STM-N card slot and choose Change Card.

Step 7   In the Change Card dialog box, choose the new STM-N card type.

Step 8   Click OK.

Step 9   Insert the new STM-N cards in both nodes.

Step 10   Install the fiber at both ends.

Step 11   Wait for the IMPROPRMVL alarm to clear and for the cards to become active.

Step 12   If cards on each side of the span have been successfully upgraded, remove the forced switch:

Procedure: Manually Upgrade a Span on a 1+1 group

When upgrading a 1+1 group, upgrade the working and protect lines regardless of which line is active. Both lines in a 1+1 group must be upgraded before added bandwidth will be available.

Step 2   In the node view of the CTC software, click the Conditions tab

Step 3   Click Retrieve Conditions.

Step 4   Apply a forced switch on the ports that you will upgrade:

Step 5   Remove the fiber from both nodes and ensure that traffic is still running.

Step 6   Pull the STM-N cards from both nodes.

Step 7   In node view, right-click each STM-N card slot and choose Change Card.

Step 8   In the Change Card dialog box, choose the new STM-N card type.

Step 9   Click OK.

Step 10   Insert the new STM-N cards in both nodes.

Step 11   Install the fibers at both ends.

Step 12   Wait for the IMPROPRMVL alarm to clear and for the card to become standby.

Step 13   If cards on each side of the span have been successfully upgraded, remove the forced switch:

The forced switch clears, and traffic begins running. If you have lost traffic, downgrade. The procedure to downgrade is identical to the upgrading procedure, except that you choose a lower-rate card type.

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Note    You cannot downgrade if circuits exist on the STM-Ns that would be removed (i.e., the higher STM-Ns).

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Step 14   Repeat these step if there are other lines in the 1+1 group.

4.6 Fiber Cleaning

All optical connectors must be handled with great care and be kept absolutely clean to prevent serious transmission breakdowns. As soon as a connector or inter-connector has been opened, the free ends must be protected with anti-dust caps. The following materials and equipment are necessary to clean the surface of the fiber ends and inspect the fiber afterwards:

Caution   Before cleaning the optical connectors in an optical card, remove the card from the subrack and place it on a suitable anti-static mat.

Procedure: Inspection

Step 2   Check the connector end surface under the microscope. Any dark spots seen on the surface of the ends are caused by dirt or possible damage. Pay special attention to the core-surface.

Step 3   If you cannot eliminate the spots by cleaning, this indicates damage to the glass fibre. You must replace the connector.

Procedure: Clean an Optical Connector

Step 2   Remove any dust with compressed air.

Step 3   Inspect again. If there is resistant dirt or grease ( e.g. finger prints etc.), wipe the endface with the cletop cleaning cassette.

Step 4   Inspect again. If necessary, repeat step 3.

Procedure: Clean a Feedthrough Connector

Step 2   Remove any dust with compressed air.

Step 3   Inspect again. If there is resistant dirt or grease, or if there are mechanical defects, replace the connector.

4.7 Powering Down a Node

Note   Always use the ESD wristband when working with the Cisco ONS 15454 SDH. Plug the wristband into the ESD jack located on the right outside of the shelf assembly. The front door is grounded to prevent electrical shock.

Note   The procedure minimizes traffic outages when nodes are powered down, but traffic will be lost if you delete and recreate circuits that passed through a working node.

Procedure: Power Down a Node

Step 2   From the CTC software network view, verify the node is not connected to a working network. If the node is part of a working network, log out of the node andrefer to the "Remove an MS-SPRing Node" procedure or the "Remove a MSP Node" procedure in Chapter 5 of the Cisco ONS 15454 SDH Installation and Operations Guide, Release 3.3. Then continue with Step 3. If the node is not connected to a working network and the current configurations are no longer required, go to Step 3.

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Note    Current configurations will be saved if Steps 3 - 8 are skipped.

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Step 3   From the node view, choose the Circuits tab and verify that no circuits are displayed. If circuits are displayed, delete all the circuits that originate or terminate in the node:

If no circuits are displayed, skip to Step 4.

Step 4   From the node view, choose the Provisioning > Protection tabs and delete all protection groups.

Step 5   From node view, choose the Provisioning > SDH DCC tabs and delete all SDCC terminations.

Step 6   For each installed line card, from card view, click the Provisioning > Line tabs and place all ports in "Out of Service" mode.

Step 7   Remove all fiber connections to the cards.

Step 8   Right-click the installed line card and click Delete. Click Yes.

Step 9   After you have deleted the line card, open the card ejector handles and pull it from the node. Repeat Steps 6 - 9 for each installed line card.

Step 10   Turn off the power of the power supply that feeds the node.

Step 11   Disconnect the node from its external source.

Step 12   Disconnect the power cables from the MIC-A/P and MIC-C/T/P cards.

Step 13   Remove all the remaining common cards and FMEC cards from the node.

Step 14   Store all pulled cards and update inventory records according to local site practice.

4.8 Powering Up a Node

Note   Always use the ESD wristband when working with the Cisco ONS 15454 SDH. Plug the wristband into the ESD jack located on the fan-tray assembly or on the lower right outside edge of the shelf assembly. To access the ESD plug on the shelf assembly, open the front door of the Cisco ONS 15454 SDH. The front door is grounded to prevent electrical shock.

Procedure: Power Up a Node

Step 2   Install the first TCC-I card in the shelf.

Step 3   Install the MIC-A/P in slot 23 and the MIC-C/T/P card in slot 24 of the shelf.

Step 4   Connect the power cables to the power supply inputs of the MIC-A/P and the MIC-C/T/P.

Step 5   Connect the other ends of the power cables to the power distribution panel. Refer to ONS 15454 SDH Installation and Operations Guide.

Step 6   Turn on both power switches on the power power distribution panel.

Step 7   Wait until the first TCC-I card has finished its startup procedure. The startup procedure takes about three minutes and is finished when the IP address is to displayed on the LCD of the fan unit.

Step 8   Install the second TCC-I.

Note   When a second TCC-I card is inserted into the shelf, it will synchronize its software, its backup software, and its database with the active TCC-I. If its software version does not match the version on the active TCC-I, the newly inserted TCC-I will copy from the active TCC-I. This copying will take about 15 to 20 minutes. If its backup software version does not match the version on the active TCC-I, the newly inserted TCC-I will copy the backup software from the active TCC-I. This copying, again, will take about 15 to 20 minutes. Copying the database from the active TCC-I will take about 3 minutes. So, depending on the software existing in the new TCC-I, booting it up will take between 3 and about 40 minutes.

Step 9   Install the first and the second XC10G cards.

Step 10   Install the optical line cards required for the configuration to be set up.

Step 11   Install the electrical line cards required for the configuration to be set up.

Step 12   Install the FMECs required for the configuration to be set up.

Step 13   Check with the fiber video microscope and, if necessary, clean each fiber connector.

Step 14   Install all fiber connections to the cards as required for the configuration to be set up.

Step 15   Configure the node according to the Cisco ONS 15454 SDH Installation and Operations Guide, R3.3.