Table Of Contents
Install Cards and Fiber-Optic Cable
Before You Begin
NTP-14 Verify the Shelf Installation
DLP-35 Measure Voltage
NTP-15 Install the Common Control Cards
DLP-36 Install the TCC+ XC/XCVT/XC10G Cards
DLP-37 Verify System Software on the LCD
DLP-38 Install the Alarm Interface Controller (AIC) Card
NTP-16 Install the Optical Cards
NTP-17 Install the Electrical Cards
NTP-18 Install the Ethernet Cards
DLP-39 Install Ethernet Cards
DLP-40 Install Gigabit Interface Converters
NTP-19 Install the Fiber-Optic Cables
DLP-42 Install Fiber-Optic Cables on OC-N Cards
DLP-43 Install Fiber-Optic Cables for UPSR Configurations
DLP-44 Install Fiber-Optic Cables for BLSR Configurations
DLP-45 Install the Fiber Boot
DLP-46 Route Fiber-Optic Cables
NTP-20 Replace the Front Door
Install Cards and Fiber-Optic Cable
This chapter explains how to install the Cisco ONS 15454 cards and fiber-optic cable (fiber).
Before You Begin
Before beginning this chapter, complete Chapter 1, "Install the Shelf and Backplane Cable."
This section lists the chapter procedures (NTPs). Turn to a procedure for applicable tasks (DLPs).
1. 
NTP-14 Verify the Shelf Installation—Complete this procedure before beginning the remaining procedures in this chapter.
2. NTP-15 Install the Common Control Cards—Complete this procedure before continuing with the "NTP-16 Install the Optical Cards" task.
3. NTP-16 Install the Optical Cards—Complete this procedure before continuing with the "NTP-17 Install the Electrical Cards" task.
4. NTP-17 Install the Electrical Cards—Complete this procedure before continuing with the "NTP-18 Install the Ethernet Cards" task.
5. NTP-18 Install the Ethernet Cards—Complete this procedure before continuing with the "NTP-19 Install the Fiber-Optic Cables" task.
6. NTP-19 Install the Fiber-Optic Cables—Complete this procedure to install and route the fiber-optic cables.
7. NTP-20 Replace the Front Door—Complete this procedure to replace the front door and ground strap after installing cards, and installing and routing fiber-optic cables.
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Caution Unused card slots should be filled with a blank faceplate (Cisco P/N 15454-BLANK). The blank faceplate ensures proper airflow when operating the ONS 15454 without the front door attached, although Cisco recommends that the front door remain attached.
NTP-14 Verify the Shelf Installation
Step 1 Complete the "DLP-35 Measure Voltage" task.
Step 2 Continue with the "NTP-15 Install the Common Control Cards" procedure.
DLP-35 Measure Voltage
Purpose
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This task measures the power to verify correct power and returns.
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Tools/Equipment
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Voltmeter
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Prerequisite Procedures
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Complete Chapter 1.
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Required/As Needed
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Required
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Onsite/Remote
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Onsite
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Step 1 Using a voltmeter, verify the office ground and power:
a. Place the black lead (positive) on the frame ground on the bay. Hold it there while completing
Step b.
b. Place the red lead (negative) on the fuse power points and alarm panel to verify that they read between -40V DC and -57V DC (power) and 0 (return ground).
Step 2 Using a voltmeter, verify the shelf ground and power wiring ( Figure 2-1 shows the power terminals):
a. Place the black lead (positive) on the RET1 and the red lead on the BAT1 point. Verify a reading between -40 V DC and -57 V DC. If there is no voltage, check the following:
•Battery and ground reversed to the shelf
•Battery is open or missing
•Return is open or missing
b. Repeat Step 2 for the RET2 and BAT2 if the B power feed is provided.
Figure 2-1 ONS 15454 power terminals
NTP-15 Install the Common Control Cards
Purpose
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This procedure describes how to install the common control cards.
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Tools/Equipment
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None
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Prerequisite Procedures
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NTP-14 Verify the Shelf Installation
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Required/As Needed
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Required
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Onsite/Remote
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Onsite
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Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool due to electrical hazard.
Caution Always use the supplied ESD wristband when working with a powered ONS 15454. Plug the wristband cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
Step 1 Complete the "DLP-36 Install the TCC+ XC/XCVT/XC10G Cards" task.
Step 2 Complete the "DLP-37 Verify System Software on the LCD" task.
Step 3 Complete the "DLP-38 Install the Alarm Interface Controller (AIC) Card" task, if necessary.
Step 4 Turn to the table of contents, list of procedures, or index to locate any other procedures that you need to perform for your site.
DLP-36 Install the TCC+ XC/XCVT/XC10G Cards
Although the installation procedure is the same for both TCC+ and XC/XCVT/XC10G (cross-connect) cards, you must install the TCC+ card and let it initialize before installing any cross-connect cards. The TCC+ card houses the ONS 15454 software. For a detailed explanation, refer to the Cisco ONS 15454 Reference Manual. Repeat this procedure to install redundant TCC+ and XC/XCVT/XC10G cards.
Purpose
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This task installs the TCC+ and XC/XCVT/XC10G cards.
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Tools/Equipment
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•TCC+ card
•XC/XCVT/XC10G (cross-connect) cards
•AIC card
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Prerequisite Procedures
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DLP-35 Measure Voltage
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Required/As Needed
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Redundant TCC+ cards and redundant cross-connect cards are required.
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Onsite/Remote
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Onsite
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Note This is not the procedure to use when upgrading from XC to XCVT cards or from XCVT to XC10G cards. If you are performing an XC to XCVT upgrade, an XCVT to a XC10G upgrade, or a TCC to TCC+ upgrade, see "Upgrade Cards and Spans."
Step 1 Open the card ejectors.
Step 2 Slide the card along the guide rails into the correct slot (Slot 8 or 10 for the XC/XCVT/XC10G and Slot 7 or 11 for the TCC+).
Step 3 Close the ejectors.
Step 4 Verify the LED activity as described in Table 2-1.
Table 2-1 LED Activity during TCC+ and XC/XCVT/XC10G Card Installation
Card Type
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LED Activity
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TCC+
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1. The red FAIL LED turns on and remains illuminated for 20 to 30 seconds.
2. The red FAIL LED blinks for 35 to 45 seconds.
3. The red FAIL LED remains illuminated for 5 to 10 seconds.
4. All LEDs (including the CRIT, MAJ, MIN, REM, SYNC, and ACO LEDs) blink once and turn off for 5 to 10 seconds.
5. The ACT/STBY LED turns on. (On the TCC+ card, the ACT/STBY LED
may take several minutes to illuminate while the DCC processor boots.)
|
XC/XCVT/XC10G
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1. The red LED turns on and remains illuminated for 20 to 30 seconds.
2. The red LED blinks for 35 to 45 seconds.
3. The red LED remains illuminated for 5 to 10 seconds.
4. All LEDs blink once and turn on.
5. The ACT/STBY LED turns on.
|
Note If the FAIL LED is illuminated continuously on the TCC+ card, see the tip below about the TCC+ automatic upload.
Note If you insert a card into a slot provisioned for a different card, all LEDS turn off.
Note If the red FAIL LED does not illuminate, check the power.
Step 5 Verify that the ACT/STBY LED is the correct color for the card (green for active and amber for standby). The IP address for the node, the temperature of the ONS 15454, and the time of day will be displayed on the LCD. The default time and date is 12:00 AM, January 1, 1970.
Step 6 Repeat this task for each TCC+, XC, XCVT, or XC10G card you need to install.
Tip When a newly installed TCC+ card has a different version of the ONS 15454 software installed than the version running on the active TCC+, the newly-installed TCC+ card automatically copies the software version running on the active TCC+. You do not need to do anything in this situation. However, the loading TCC+ card will not boot up in the normal manner. When the card is first inserted, the red FAIL LED stays on for a short period. The FAIL LED then blinks normally and all LEDs go dark. The FAIL LED and the ACT/STBY LED flash alternately every 30 to 45 seconds as the new software loads onto the new TCC+ card. After loading the new software for approximately 30 minutes, the TCC+ card becomes the standby card and the amber LED is illuminated.
DLP-37 Verify System Software on the LCD
Step 1 View the LCD on the front panel of the ONS 15454 to make sure it shows the correct software version.
Step 2 If the LCD does not show the correct software version or displays XXXXXX, replace the TCC+ card.
DLP-38 Install the Alarm Interface Controller (AIC) Card
Step 1 Open the card ejectors.
Step 2 Slide the card along the guide rails into Slot 9.
Step 3 Close the ejectors.
Step 4 Verify the following:
•The red FAIL LED remains illuminated for 1 second, then blinks for 1 to 5 seconds.
•After 1 to 5 seconds, all LEDs blink once and turn off.
•The ACT LED turns on.
Note If the red FAIL LED does not illuminate, check the power.
Note If you insert a card into a slot provisioned for a different card, all LEDS turn off.
NTP-16 Install the Optical Cards
Purpose
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This procedure describes how to install the optical cards (OC-3, OC-12, OC-48, and OC-192).
|
Tools/Equipment
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OC-3, OC-12, OC-48, and OC-192 cards (as applicable)
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Prerequisite Procedures
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NTP-14 Verify the Shelf Installation
NTP-15 Install the Common Control Cards
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Required/As Needed
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Required if the node will carry optical traffic. Install according to site plan, if available.
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Onsite/Remote
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Onsite
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Note To simplify UPSR to BLSR conversion and node addition, equip optical cards according to a high-speed east (Slots 12 and 13) and west (Slots 5 and 6) configuration. This configuration is not mandatory.
Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool due to electrical hazard.
Caution Always use the supplied ESD wristband when working with a powered ONS 15454. Plug the wristband cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
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.
Warning On the OC192LR 1550 card, the laser is active when the card is booted and the safety key is in the on position (labeled 1). The port does not have to be in service for the laser to be on. The laser is off when the safety key is off (labeled 0).
Step 1 Open the card ejectors.
Step 2 Slide the card along the guide rails into the correct slot:
•Slots 1 - 4 and 14 - 17 are multispeed slots. They can host any ONS 15454 traffic card, except the OC48IR 1310, OC48LR 1550, OC48ELR 1550, and OC192LR 1550 cards.
•Slots 5, 6, 12 and 13 are high-speed slots. They can host any traffic ONS 15454 card, except the OC12/STM4-4 (four-port OC-12) card.
•You can install the OC48 IR/STM16 SH AS 1310 and the OC48 LR/STM16 LH AS 1550 cards in any multispeed or high-speed card slot.
•You must install the OC12/STM4-4 card in Slots 1 - 4 and 14 - 17.
Warning Before installing an OC-192 card, make sure the safety key on the faceplate is in off position (labeled 0). When in the on position (labeled 1), the laser is activated.
Step 3 Close the ejectors.
Step 4 Verify the LED activity, as described below.
1. The red FAIL LED turns on and remains illuminated for 20 to 30 seconds.
2. The red FAIL LED blinks for 35 to 45 seconds.
3. All LEDs blink once and turn off for 5 to 10 seconds.
4. The ACT or ACT/STBY LED turns on. The signal fail (SF) LED can persist until all card ports connect to their far end counterparts and a signal is present.
Note If the red FAIL LED does not illuminate, check the power.
Note If you insert a card into a slot provisioned for a different card, all LEDS turn off.
Step 5 Complete the "DLP-42 Install Fiber-Optic Cables on OC-N Cards" task.
Step 6 Turn to the table of contents, list of procedures, or index to locate any other procedures that you need to perform for your site.
NTP-17 Install the Electrical Cards
Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool due to electrical hazard.
Caution Always use the supplied ESD wristband when working with a powered ONS 15454. Plug the wristband cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
Step 1 Open the card ejectors.
Step 2 Slide the card along the guide rails into the correct slot.
Step 3 Close the ejectors.
Step 4 Verify the LED activity, as described below.
1. The red FAIL LED turns on and remains illuminated for 10 to 15 seconds.
2. The red FAIL LED blinks for 30 to 40 seconds.
3. All LEDs blink once and turn off for 1 to 5 seconds.
4. The ACT or ACT/STBY LED turns on. The signal fail (SF) LED can persist until all card ports connect to their far end counterparts and a signal is present
Note If the red FAIL LED fails to turn on, check the power.
Note If you insert a card into a slot provisioned for a different card, all LEDs turn off.
Step 5 Turn to the table of contents, list of procedures, or index to locate any other procedures that you need to perform for your site.
NTP-18 Install the Ethernet Cards
Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool due to electrical hazard.
Caution Always use the supplied ESD wristband when working with a powered ONS 15454. Plug the wristband cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
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.
Step 1 Complete the "DLP-39 Install Ethernet Cards" task.
Step 2 Complete the "DLP-40 Install Gigabit Interface Converters" task if you are using E1000-2, E1000-2G, or G1000-4 cards.
Step 3 Turn to the table of contents, list of procedures, or index to locate any other procedures that you need to perform for your site.
DLP-39 Install Ethernet Cards
Step 1 Open the card ejectors.
Step 2 Slide the card along the guide rails into the correct slot.
Step 3 Close the ejectors.
Step 4 Verify the LED activity, as described below.
1. The red FAIL LED turns on and remains illuminated for 20 to 30 seconds.
2. The red FAIL LED blinks for 35 to 45 seconds.
3. All LEDs blink once and turn off for 1 to 5 seconds.
4. The ACT or ACT/STBY LED turns on. The signal fail (SF) LED can persist until all card ports connect to their far end counterparts and a signal is present.
Note If the red FAIL LED fails to turn on, check the power.
Note If you insert a card into a slot provisioned for a different card, all LEDs turn off.
DLP-40 Install Gigabit Interface Converters
Purpose
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This task installs the gigabit interface converters (GBICs) and attaches fiber.
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Tools/Equipment
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GBICs
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Prerequisite Procedures
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DLP-39 Install Ethernet Cards
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Required/As Needed
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Required if you are using E1000-2, E1002-G, or G1000-4 cards.
|
Onsite/Remote
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Onsite
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Step 1 Remove the GBIC from its protective packaging.
Step 2 Check the part number (15454-GBIC-LX or 15454-GBIC-SX) to verify that the GBIC is the correct type for your network.
Step 3 Grip the sides of the GBIC with your thumb and forefinger and insert it into the slot on the front panel of the Gigabit Ethernet card (shown in Figure 2-2).
GBICs are hot-swappable and can therefore be installed/removed while the card/shelf assembly is powered and running.
Note GBICs are keyed to prevent incorrect installation.
Figure 2-2 Installing a GBIC on an E1000-2 card
Step 4 Slide the GBIC through the cover flap until you hear a click.
The click indicates the GBIC is locked into the slot.
Warning GBICs are Class I laser products. These products have been tested and comply with Class I limits.
Warning Invisible laser radiation may be emitted from the aperture ports of the single-mode fiber optic modules when no cable is connected. Avoid exposure and do not stare into open apertures.
Step 5 When you are ready to attach the fiber-optic cable, remove the plug from the GBIC and save the plug for future use.
Step 6 Install and route the cable. See the "DLP-46 Route Fiber-Optic Cables" section for routing instructions.
NTP-19 Install the Fiber-Optic Cables
Note To install fiber-optic cables on an Ethernet card GBIC, see the "DLP-40 Install Gigabit Interface Converters" task.
Caution Always use the supplied ESD wristband when working with a powered ONS 15454. Plug the wristband cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
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.
Warning The laser is active when the card is booted and the safety key is in the on position (labeled 1). The port does not have to be in service for the laser to be on. The laser is off when the safety key is off (labeled 0).
Warning Follow all directions and warning labels when working with optical fibers. To prevent eye damage, never look directly into a fiber or connector.
Caution Do not user fiber loopbacks with the OC192 LR 1550 card unless you are using a 20 dB attentuator. Never connect a direct fiber loopback. Using fiber loopbacks causes irreparable damage to the OC-192 card.
Note Fiber boots are not recommended for the OC192 or the OC48AS because of the downward angle of the optical ports.
Step 1 Complete the "DLP-42 Install Fiber-Optic Cables on OC-N Cards" task.
Step 2 As needed, complete the "DLP-43 Install Fiber-Optic Cables for UPSR Configurations" task.
Step 3 As needed, complete the "DLP-44 Install Fiber-Optic Cables for BLSR Configurations" task.
Step 4 Complete the "DLP-45 Install the Fiber Boot" task.
Step 5 Complete the "DLP-46 Route Fiber-Optic Cables" task.
Step 6 Turn to the table of contents, list of procedures, or index to locate any other procedures that you need to perform for your site.
DLP-42 Install Fiber-Optic Cables on OC-N Cards
Note Inspect and clean all fiber connectors thoroughly. See the "NTP-112 Clean Fiber Connectors" section on page 15-15 for instructions. Dust particles can degrade performance. Put caps on any fiber connectors that are not used.
Step 1 Align the keyed ridge of the cable connector with the receiving SC connector on the faceplate connection point. Each card supports at least one transmit and one receive connector to create an optical carrier port. Figure 2-3 shows the cable location.
Figure 2-3 Installing fiber-optic cables
Note The OC12/STM4-4 card faceplate has four ports.
Step 2 Gently push the cable connector into the faceplate connection point until the connector snaps into place.
Step 3 If you are installing fiber-optic cables on a OC12/STM4-4 card, repeat Steps 1 and 2 until all SC connectors are in place.
DLP-43 Install Fiber-Optic Cables for UPSR Configurations
Note To avoid error, connect fiber-optic cable so that the farthest slot to the right represents the east port, and the farthest slot to the left represents the west port. Fiber connected to an east port at one node must plug into the west port on an adjacent node.
Step 1 Plug the fiber into the transmit (Tx) connector of an OC-N card at one node and plug the other end of the fiber into the receive (Rx) connector of an OC-N card at the adjacent node. The card will display a signal fail (SF) LED if the transmit and receive fibers are mismatched.
Step 2 Repeat Step 1 until you have configured the ring.
Figure 2-4 shows fiber connections for a four-node UPSR with trunk cards in Slot 5 (west) and Slot 12 (east).
Figure 2-4 Connecting fiber to a four-node UPSR
DLP-44 Install Fiber-Optic Cables for BLSR Configurations
Note To avoid error, connect fiber-optic cable so that the farthest slot to the right represents the east port, and the farthest slot to the left represents the west port. Fiber connected to an east port at one node must plug into the west port on an adjacent node.
Step 1 Plan your fiber connections. Use the same plan for all BLSR nodes.
Step 2 Plug the fiber into the transmit (Tx) connector of an OC-N card at one node and plug the other end into the receive (Rx) connector of an OC-N card at the adjacent node. The card will display a signal fail (SF) LED if the transmit and receive fibers are mismatched.
Note Do not mix working and protect card connections (such as connect working cards to working cards and protect cards to protect cards). The BLSR will not function if working and protect cards are interconnected.
Step 3 Repeat Step 2 until you have configured the ring.
Figure 2-5 shows fiber connections for a two-fiber BLSR with trunk cards in Slot 5 (west) and Slot 12 (east).
Figure 2-5 Connecting fiber to a four-node, two-fiber BLSR
Figure 2-6 shows fiber connections for a four-fiber BLSR. Slot 5 (west) and Slot 12 (east) carry the working traffic. Slot 6 (west) and Slot 13 (east) carry the protect traffic.
Figure 2-6 Connecting fiber to a four-node, four-fiber BLSR
DLP-45 Install the Fiber Boot
Note You can install the fiber boots on the fiber-optic cables before or after the fibers are attached to the optical card.
Step 1 Position the open slot of the fiber boot underneath the fiber cable.
Push the fiber cable down into the fiber boot. Figure 2-7 shows the fiber boot attachment.
Step 2 Twist the fiber boot to lock the fiber cable into the tail end of the fiber boot.
Slide the fiber boot forward along the fiber cable until the fiber boot fits snugly onto the end of the SC cable connector.
Figure 2-7 Attaching a fiber boot
DLP-46 Route Fiber-Optic Cables
Purpose
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This task describes how to route fiber-optic cables.
|
Tools/Equipment
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None
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Prerequisite Procedures
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NTP-19 Install the Fiber-Optic Cables
|
Required/As Needed
|
Required
|
Onsite/Remote
|
Onsite
|
Step 1 Open the fold-down front door on the cable-management tray.
Step 2 Route the fiber cable on the card faceplate through the fiber clip on the faceplate. Fiber clips are factory-attached to the faceplate of the optical card.
GBICs do not have fiber clips; therefore, if you are routing optical cable from an E1000-2-G, E1000-2, or G1000-4 card, skip to Step 3.
Step 3 Route the fiber cables into the cable-management tray.
Step 4 Route the fiber cables out either side of the cable-management tray through the cutouts on each side of the shelf assembly. Use the reversible fiber guides to route cables out the desired side.
Step 5 Close the fold-down front door when all fiber cables in the front compartment are properly routed.
Figure 2-8 shows the fold-down front door of the shelf assembly open to display the cable routing channel.
Figure 2-8 Fold-down front door of the cable-management tray (displaying the cable routing channel)
NTP-20 Replace the Front Door
Purpose
|
The following procedure explains how to replace the front door and door ground strap after installing cards and fiber-optic cables.
|
Tools/Equipment
|
•#2 Phillips screw driver
•Medium slot head screw driver
•Small slot head screw driver
|
Prerequisite Procedures
|
Not applicable
|
Required/As Needed
|
As needed
|
Onsite/Remote
|
Onsite
|
Step 1 Insert the front door (removed in the "DLP-9 Remove the Front Door" task on page 1-13) into the hinges on the shelf assembly.
Step 2 Attach one end of the ground strap terminal lug (72-3622-01) to the male stud on the inside of the door. Attach and tighten the #6 Kepnut (49-0600-01) using the open end wrench. See Figure 2-9.
Figure 2-9 Installing the Door Ground Strap Retrofit Kit
Step 3 Attach the other end of the ground strap to the longer screw on the fiber guide.
a. Attach the lock washer.
b. Attach the terminal lug.
c. Using the open end wrench, attach and tighten the #4 Kepnut (49-0337-01) on the terminal lug.
Note To avoid interference with the traffic (line) card, make sure the ground strap is in a flat position when the door is open. To move the ground strap into a flat position, rotate the terminal lug counterclockwise before tightening the Kepnut.
Step 4 Replace the left cable-routing channel.
Step 5 Using a Phillips screwdriver, insert and tighten the screws for the cable-routing channel.
Figure 2-10 shows the shelf assembly with the front door and ground strap installed.
Figure 2-10 Shelf assembly with Door Ground Strap Retrofit Kit installed
Step 6 Swing the door closed. Figure 2-11 shows the front door.
Note The ONS 15454 comes with a pinned hex key tool for locking and unlocking the front door. Turn the key counterclockwise to unlock the door and clockwise to lock it.
Figure 2-11 The ONS 15454 front door
