Install the Redundant ESU11 or ESU2

Fiber Optic Cable

Ensure that the fiber connectors are properly cleaned per local standards. Dirty connectors may result in inaccurate measurements.

Caution 1: Fiber optic cable installation and maintenance should only be performed by trained service personnel.

Caution 2:  Do not bend the fiber optic cable to a diameter smaller than 7.5cm/3 inches. Doing so may damage the fiber or prevent the signal from passing through properly.

Electrostatic Discharge (ESD)

Observe and follow all ESD instructions while handling Tellabs plug-in equipment.

Caution! The Tellabs plug-in equipment uses semiconductor devices that can be damaged by electrostatic discharge (ESD). Do not remove a plug-in from a protective packing box or equipment rack until the time of installation or replacement. To equalize the static charge on the plug-in, establish a body path to the ground using an ESD wrist strap connected to an ESD ground. [If storing or shipping the plug-in becomes necessary, place the plug-in in a conductive shipping box to prevent static buildup.]

Apply the following precautions:

• Use grounded wrist straps, table mats, floor mats
• Handle static-sensitive devices in the nonconductive areas
• Place static-sensitive cards into an antistatic plastic bag    
• Use protective ESD-sensitive packing and shipping bags when returning repairable components

Note 1: The MDS shelf does not support a mix of ESU11s and ESU2s. Whatever type of ESU is installed in the "A" slot must also be installed in the "B" slot.

Note 2: This procedure assumes the technician has already installed and provisioned an ESU in the MDS slot labeled ESU A and is now installing a redundant ESU card in the slot labeled ESU B.

Note 3: The MDS5 and ESU11 are shown, for illustrative purposes only. This procedure applies regardless of the ESU or MDS shelf.

1. At the DC Rectifier Shelf, set the circuit breakers, A and B, for the MDS5 or MDS7 shelf to the ON position.
2. If not already open, open the cover to the MDS shelf.
3. Connect an ESD strap to the ESD jack on the MDS shelf.
4. Remove the blank faceplate from the slot labeled ESU A.
5. Unpack and inspect the ESU for any apparent damage. If there is apparent damage, notify the supervisor for assistance and do not proceed. The ESUs are shown below.

Figure 1: Ethernet Switch Units (ESU11 and ESU2)

6. Carefully insert the card into the upper and lower card guides of the MDS shelf until the card contacts the backplane connector. Apply equal pressure on both card ejectors.
7. Upon insertion, the STAT LED illuminates RED while performing internal power-up diagnostics. Upon successful completion of the power-up diagnostics, the STAT LED blinks GREEN for 2.5 minutes, at 0.5 second intervals, while initializing.

8. Did the STAT and ACTIVE LEDs illuminate as indicated in Step 7?
   • If YES, go to Step 9.
   • If NO, replace the ESU with a known good unit and repeat this procedure from Step 5. If the problem persists, contact the next level of support for technical assistance.
9. Insert the appropriate Small Form-Factor Pluggable (SFP or XFP) module(s) into the appropriate SFP/XFP port.

   Note 1: When inserting the SFP or XFP module, ensure that the bail is closed against the module. When the module is properly inserted, an audible click can be heard.

   Note 2: The LEDs on the SFP/XFP should be illuminated Amber (LOW) and Dark (LINK) until the ESU is provisioned.

10. Remove the dust covers from the SFP/XFP module installed in Step 9.

    Note: It is recommended that single-mode LC/UPC or SC/UPC, as appropriate, fiber optic jumper cables, with a pre-assembled 90° fiber optic strain relief boot clip be installed. Fiber optic jumper cables with the pre-assembled boot clip allow the shelf cover to close without causing damage to the installed fiber optic cables. A typical installation, with pre-assembled 90° fiber optic strain relief boot clips, is shown in the following illustration.

11. Remove the dust caps from the duplex Lucent® Connector (LC) connectors on one end of the duplex fiber jumper.
12. Uncap and clean, according to local practices, the fiber jumpers and insert the connector into the SFP/XFP module installed in Step 9.

    Note 1: When inserting fibers into the SFP/XFP module, the transmit side is the upper port and the receive side is the lower port.

    Note 2: The LC connector on the fiber jumper locks into the module, similar to an RJ-45 connector. When the connector is properly inserted, an audible click can be heard.

13. Route the fiber jumper(s) from the ESU to the fiber cross-connect shelf as follows (see Figure below):
    1. Down into the fiber tray.
    2. On the left side of the shelf.  
    3. Up the left rail to the fiber cross-connect shelf.
    4. Once at the fiber cross-connect shelf, route the fiber jumper on the left side of the shelf to the appropriate port.
        

Figure 7: Routing Fiber Jumper from the ESU

14. If redundant fiber jumpers are to be terminated at this time, repeat Step 9 through Step 13.
15. Go to Turn Up and Provision ESU11 or ESU2.

    Note: In configuring the ESU11 or ESU2, those users with the previous software version FP25.6, follow the instructions to upgrade the software release up to FP27.1. For those users with software version FP27.1, follow the original turnup procedures described in  section (refer to Turn Up and Provision ESU11 or ESU2)