Unpack and Install the Chassis


Note
The images in this chapter are only for representation purposes, unless specified otherwise. The chassis' actual appearance and size may vary.

Install the Bracket Mounting Adapter on 23-inch Rack Post

To install a chassis on a 23-inch 4-post or 2-post rack, you must first install the bracket mounting adapter on the rack. Perform these steps to install the bracket mounting adapter:

Rack Mount Kit

  • 4 Post: NC57-2RU-ACC-KIT3

  • 2 Post: NC57-2RU-ACC-KIT4

Procedure

Mount the Bracket mounting adapter on the 23-inch rack post. Use three 12-24 Phillips pan-head screws with 30 in-lb (3.39 N.m) to attach each Bracket mounting adapter to the rear and front rack post on either sides.

Figure 1. Mount Bracket Mounting Adapter on a 23-inch 2-Post Rack
Figure 2. Mount Bracket Mounting Adapter on a 23-inch 4-Post Rack

1

 Bracket mounting adapter

2

 Screws

What to do next

Continue with the installation of the router by referring to the procedures for the 19-inch rack post.

Install Bottom-Support Rails

The bottom-support rails support the weight of the router chassis in the rack. To maximize the stability of the rack, you must attach these rails at the lowest possible rack unit (RU).

Procedure

Step 1

Position the vertical rack rails at 32" depth to match with the length of the bottom-support rails. Check spacing considerations.

Step 2

Attach the bottom-support rail to the rack by using a Phillips torque screwdriver. Use an equivalent M5 x 12.45 mm or 12-24 x 1/2 inch screws for each end of the buttom-support rails and tighten each screw to 40 in-lbs (4.5 N-m) of torque.

Figure 3. Attach Bottom-Support Rails to Rack for Cisco 8711-32FH Router

1

M5 x 6-mm Phillips flat-head screws on the front (2)

2

M5 x 6-mm Phillips flat-head screws on the rear (6)

3

Bottom-support rails
Figure 4. Attach Bottom-Support Rails to Rack for Cisco 8712-MOD-M Router

1

Bottom-support rails

2

M4 x 6-mm Phillips flat-head screws (8)
Use two screws on each end of each bottom-support rail.

Step 3

Repeat Steps 1 and 2 to attach the other bottom-support rail to the rack.

Note

 
Ensure that the two bottom-support rails are level with one another. If they are not level, adjust the higher rail down to the level of the lower rail.

Rack Mount the Chassis

The chassis can be mounted on a 4-post or a 2-post rack.


Warning

Statement 1032—Lifting the Chassis

To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles on modules, such as power supplies, fans, or cards. These types of handles are not designed to support the weight of the unit.


Warning

Statement 1006—Chassis Warning for Rack-Mounting and Servicing

To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:

  • This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

  • When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.

  • If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.


Warning

Statement 1096—Headset Warning

High Sound Pressure—Avoid listening to high volume levels for long periods to prevent possible hearing damage.


Warning

Statement 1098—Lifting Requirement

people are required to lift the heavy parts of the product. To prevent injury, keep your back straight and lift with your legs, not your back.


Note

Statement 4023—Product Usage Restrictions

This product is designed for indoor usage only. Outdoor usage is not permitted.

Mount Cisco 8711-32FH-M Router in a 2-Post Rack with Sliders

This section describes how to use the rack-mount kit provided with the 8711-32FH-M router, to install the chassis into a cabinet or a 2-post 19-inch rack.


Caution
If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized.

For a complete list of items contained in the 2-post rack-mount kit (8700-1RU-2P-KIT) provided with the router, see Router Accessory Kits.

Before you begin

To install the router on a 23-inch rack, install the bracket mounting adapter on the 23-inch rack post (see Install the Bracket Mounting Adapter on 23-inch Rack Post ) and then continue with this procedure.

Procedure

Step 1

Install the slider assembly on the rack as follows:

  1. Align the left slider assembly to the rear post rack holes. The slider rail should be at the bottom.

  2. Use four M5 12.45-mm Phillips dome-head screws with 27.44 in-lb (3.1 N-m) to attach the slider assembly to the rear post.

  3. Repeat Steps 1a and 1b with the other slider assembly on the other side of the router.

    Figure 5. Rack-Mount Slider Assembly on a 19-inch 2-Post Rack

    1

    2 x M5 12.45-mm Phillips dome-head screws. One screw on each side.

    4 x M5 12.45-mm Phillips dome-head screws on the rear side. Two screws on each side.

    2

    Slider assembly

    Note

     

    In case of a 23-inch 2-post rack, mount the slider assembly on the bracket mounting adapter following the same procedure outlined in Step 2.

Step 2

Install the ground lug extension bracket on the chassis. Use two M4 x 5.7-mm Phillips flat-head screws with 13.28 in-lbs (1.5 N-m).

Figure 6. Install the Ground Lug Extension Bracket on the Cisco 8711-32FH-M Router

1

 Ground lug extension bracket

2

2 x M4 x 5.7-mm Phillips flat-head screws

Step 3

Install slider brackets to the router as follows:

  1. Determine which end of the chassis is to be located in the cold aisle as follows:

    • If the router has port-side intake modules, position the router so that the ports are in the cold aisle.

    • If the router has port-side exhaust modules, position the router so that the fan and power supply modules are in the cold aisle.

  2. With the slider bracket ears aligned to the front of the chassis as shown in the image, use twelve M4 x 5.7 mm flat head screws with 13.28 in-lbs (1.5 N-m). to attach the bracket to the chassis.

  3. Repeat the step with the other slider bracket on the other side of the router.

    Figure 7. Mount Slider Brackets in a 19-inch 2-Post Cisco 8711-32FH-M Router
    Align the slider bracket with router face plate.
    Figure 8. Mount Slider Brackets in a 19-inch 2-Post Cisco 8711-32FH-M Router along the Marking Line
    Align the slider brackets with the marking line. Refer this image for marking line details.

    1

    		 Slider brackets

    2

    		 6 x M4 5.7-mm Phillips flat head screws on each side

Step 4

Install the router onto the 2-post rack as follows:

  1. Holding the router with both hands, position the back of the router between the front posts of the rack.

  2. Move the router until the slider brackets come in contact with slider rails installed in the rack. Slide the slider brackets onto the slider rails, and then gently move the router all the way into the rack.

  3. Hold the chassis level while the second person inserts six pan-head screws (M5) in each of the two rack-mount brackets (using a total of twelve screws) and into the cage nuts or threaded holes in the vertical rack-mounting rails.

  4. Tighten the M5 12.45-mm Phillips dome-head screws to 27.44 in-lb (3.1 N-m).

Figure 9. Slide the Chassis into the 19-inch 2-Post Rack

1

 2 x M5 12.45-mm Phillips dome-head screws. Two screws on each side.

2

Slider assembly
Figure 10. Chassis Mounted into the 19-inch 2-Post Rack

Mount Cisco 8711-32FH-M Router in a 4-Post Rack with Sliders

This section describes how to use the rack-mount kit provided with the Cisco 8711-32FH-M router, to install the chassis into a cabinet or a 4-post 19-inch rack.


Caution
If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized.

For a complete list of items contained in the 4-post rack-mount kit (8700-1RU-4P-KIT) provided with the router, see Router Accessory Kits.

Before you begin

To install the router on a 23-inch rack, install the bracket mounting adapter on the 23-inch rack post (see Install the Bracket Mounting Adapter on 23-inch Rack Post ) and then continue with this procedure.

Procedure

Step 1

Install the slider assembly on the rack as follows:

  1. Align the outer slider of the left slider assembly to the rear post rack holes and the inner slider of the left slider assembly to the front post rack holes. The slider rail should be at the bottom.

  2. Use four M5 12.45-mm Phillips dome-head screws (three on the rear side and one on the front side) with 27.44 in-lb (3.1 N-m) to attach the slider assembly to the rear and front rack post.

  3. Repeat Steps 1a and 1b with the other slider assembly on the other side of the router.

    Figure 11. Rack-Mount Slider Assembly on a 19-inch 4-Post Rack

    1

    		 Front screws – 2 x M5 12.45-mm Phillips dome-head screws. One screw on each side.

    2

    Rear screws – 6 x M5 12.45-mm Phillips dome-head screws. Three screws on each side.

    3

    Slider assembly

    Note

     

    In case of a 23-inch 2-post rack, mount the slider assembly on the bracket mounting adapter following the same procedure outlined in Step 1.

Step 2

Install slider brackets to the router as follows:

  1. Determine which end of the chassis is to be located in the cold aisle as follows:

    • If the router has port-side intake modules, position the router so that the ports are in the cold aisle.

    • If the router has port-side exhaust modules, position the router so that the fan and power supply modules are in the cold aisle.

  2. Install the ground lug extension bracket on the chassis. Use two M4 x 5.7-mm Phillips flat-head screws with 13.28 in-lbs (1.5 N-m).

    Figure 12. Install the Ground Lug Extension Bracket on the Cisco 8711-32FH-M Router

    1

    		 Ground lug extension bracket

    2

    2 x M4 x 5.7-mm Phillips flat-head screws
    Figure 13. Install the Ground Lug Extension Bracket Along Marking Line on a 19-inch 4-Post Cisco 8711-32FH-M Router

    1

    		 Marking line for alignment

    2

    Slider brackets

    3

    Ground lug extension bracket

  3. With the slider bracket ears aligned to the front of the chassis as shown in the image, use six M4 x 5.7-mm Phillips flat-head screws with 13.28 in-lbs (1.5 N-m) to attach the bracket to the chassis.

  4. Repeat 2c with the other slider bracket on the other side of the router.

    Figure 14. Mount Slider Brackets on the Cisco 8711-32FH-M Router
    Align the slider bracket with router face plate.
    Figure 15. Mount Slider Brackets on the Cisco 8711-32FH-M Router along the Marking Line
    Align the slider brackets with the marking line. Refer this image for marking line details.

    1

    		 Slider bracket

    2

    6 x M4 x 5.7-mm Phillips flat- head screws on each side

Step 3

Install the router onto the 4-post rack as follows:

  1. Holding the router with both hands, position the back of the router between the front posts of the rack.

  2. Move the router until the slider brackets come in contact with slider rails installed in the rack. Slide the slider brackets onto the slider rails, and then gently move the router all the way into the rack.

  3. Hold the chassis level while the second person inserts two screws M5 12.45-mm Phillips dome-head screws in each of the two rack-mount brackets (using a total of four screws) and into the cage nuts or threaded holes in the vertical rack-mounting rails.

  4. Tighten the M5 12.45-mm Phillips dome-head screw to 27.44 in-lb (3.1 N-m).

Figure 16. Slide the Cisco 8711-32FH-M Router in 19-inch 4-Post Rack

1

 Chassis

3

 4 x M5 12.45-mm Phillips dome-head screws. Two screws on each side.

2

Slider assembly

Ground the Cisco 8711-32FH-M Router


Warning

Statement 1101—Connected To Grounded Outlet

In the Scandinavian countries (Denmark, Finland, Iceland, Norway, and Sweden) the appliance must be connected to a grounded outlet.


Warning

Statement 1024—Ground Conductor

This equipment must be grounded. To reduce the risk of electric shock, never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.


Warning

Statement 1046—Installing or Replacing the Unit

To reduce risk of electric shock, when installing or replacing the unit, the ground connection must always be made first and disconnected last.

If your unit has modules, secure them with the provided screws.


Warning

Statement 2004—Grounded Equipment

This equipment is intended to be grounded to comply with emission and immunity requirements. Ensure that the switch functional ground lug is connected to earth ground during normal use.


Note

Statement 7015—Equipment Bonding and Grounding

When you use thread-forming screws to bond equipment to its mounting metalwork, remove any paint and nonconductive coatings and clean the joining surfaces. Apply an antioxidant compound before joining the surfaces between the equipment and mounting metalwork.


Caution
Grounding the chassis is required, even if the rack is already grounded. A grounding pad with two threaded holes is provided on the chassis for attaching either a grounding lug or grounding plate. The ground lug must be NRTL-listed. In addition, a copper conductor (wires) must be used and the copper conductor must comply with NEC code for ampacity.

Caution
When terminating the frame ground, do not use soldering lug connectors, screwless (push-in) connectors, quick connect connectors, or other friction-fit connectors.

Procedure

Step 1

Use a wire-stripping tool to remove approximately 0.75 inches (19 mm) of the covering from the end of the #6 AWG grounding cable.

Step 2

Insert the stripped end of the grounding cable into the open end of the grounding lug.

Step 3

Use the crimping tool to secure the grounding cable in the grounding lug.

Step 4

Attach the ground cable. Attach one end of the shelf ground cable (#6 AWG cable) to the ground lug extension bracket using the specified dual-hole lug connector.

Step 5

Attach the ground lug extension bracket to the chassis.

Figure 17. Cisco 8711-32FH-M Ground Lug Extension Bracket

1

Ground lug extension bracket

2

2 x M4 5.7-mm Phillips flat-head screws

Step 6

Tighten the M4 5.7-mm Phillips flat-head screws to torque value of 13.28 in-lbs (1.5 N-m).

Step 7

Attach the washer and ground lug to the chassis. Tighter the two M4 5.7-mm Phillips flat-head screws to torque value of 13.28 in-lbs (1.5 N-m). Ensure that the ground lug and cable do not interfere with other equipment.

Figure 18. Install Ground Lug on Cisco 8711-32FH-M Router

1

Ground lug

2

2 x M5 7.93-mm Phillips dome-head screws

3

M5 washer

Step 8

Prepare the other end of the grounding cable, and connect it to an appropriate grounding point in your site to ensure adequate earth ground.

Mount the Cisco 8712-MOD-M Chassis in a 2-Post Rack with Sliders

This section describes how to use the rack-mount kit provided with the Cisco 8712-MOD-M chassis, to install the chassis into a cabinet or a 2-post 19-inch rack.


Caution
If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized.

The following table lists the items contained in the rack-mount kit provided with the routers.

Table 1. 2 Post Rack-Mount Kit - NC57-2RU-ACC-KIT2 (19 inch) and NC57-2RU-ACC-KIT4 (23 inch)

Quantity

Part Description

2

Slider assembly - left and right

2

Slider brackets - left and right

20

12-24 Phillips pan-head screws

26

M4 x 5.7-mm Phillips flat head screws

4

Bracket mounting adapter (available only 23-inch rack-mount kit)

1

Ground lug

Before you begin

To install the router on a 23-inch rack, install the extension brackets on the 23-inch rack post (see Install the Extension Plate on 23-inch Rack Post ) and then continue with this procedure.

Procedure

Step 1

Install the slider assembly on the rack as follows:

  1. Align the left slider assembly to the rear post rack holes. The slider rail should be at the bottom.

  2. Use four 12-24 Phillips pan-head screws with 30 in-lb (3.39 N.m) to attach the slider assembly to the rear post.

  3. Repeat Steps 2a and 2b with the other slider assembly on the other side of the router.

    Figure 19. Rack-Mount Slider Assembly on a 19-inch 2-Post Rack

    1

    		 Slider assembly

    2

    Screws

    3

    Slider rail

    Note

     

    In case of a 23-inch 2-post rack, mount the slider assembly on the extension brackets following the same procedure outlined in Step 2.

Step 2

Install slider brackets to the router as follows:

  1. Determine which end of the chassis is to be located in the cold aisle as follows:

    • If the router has port-side intake modules, position the router so that the ports are in the cold aisle.

    • If the router has port-side exhaust modules, position the router so that the fan and power supply modules are in the cold aisle.

  2. With the slider bracket ears aligned to the front of the chassis as shown in the image, use twelve M4 x 5.7 mm flat head screws with 12 in-lbs (1.4 N-m). to attach the bracket to the chassis.

  3. Repeat Step 3c with the other slider bracket on the other side of the router.

    Figure 20. Mount Slider Brackets

    1

    		 Slider brackets

    2

    		 Screws

Step 3

Install the router onto the 2-post rack as follows:

  1. Holding the router with both hands, position the back of the router between the front posts of the rack.

  2. Move the router until the slider brackets come in contact with slider rails installed in the rack. Slide the slider brackets onto the slider rails, and then gently move the router all the way into the rack.

  3. Hold the chassis level while the second person inserts six pan-head screws (12-24) in each of the two rack-mount brackets (using a total of twelve screws) and into the cage nuts or threaded holes in the vertical rack-mounting rails.

  4. Tighten the 12-24 Phillips pan-head screws to 30 in-lb (3.39 N.m).

Figure 21. 19-inch 2-Post Rack Mount Chassis

1

 Screws 2 Grounding pad location

Step 4

Install the grounding pad on the chassis. Use two M4 x 5.7 mm screws with 12 in-lbs (1.4 N-m).

Figure 22. Install the Grounding Pad

1

 Grounding pad

2

Screws

Mount the Cisco 8712-MOD-M Chassis in a 4-Post Rack with Sliders

This section describes how to use the rack-mount kit provided with the CIsco 8712-MOD-M chassis, to install the chassis into a cabinet or a 4-post 19-inch rack.


Caution
If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized.

The following table lists the items contained in the rack-mount kit provided with the routers.

Table 2. 4 Post Rack-Mount Kit - NC57-2RU-ACC-KIT (19 inch) and NC57-2RU-ACC-KIT3 (23 inch)

Quantity

Part Description

2

Slider assembly - left and right

2

Slider brackets - left and right

22

12-24 Phillips pan-head screws

22

M4 x 5.7-mm Phillips flat head screws

4

Bracket mounting adapter (available only 23-inch rack-mount kit)

1

Ground lug

Before you begin

To install the router on a 23-inch rack, install the extension brackets on the 23-inch rack post (see Install the Extension Plate on 23-inch Rack Post ) and then continue with this procedure.

Procedure

Step 1

Install the slider assembly on the rack as follows:

  1. Align the outer slider of the left slider assembly to the rear post rack holes and the inner slider of the left slider assembly to the front post rack holes. The slider rail should be at the bottom.

  2. Use six 12-24 Phillips pan-head screws (five on the rear side and one on the front side) with 30 in-lb (3.39 N.m) to attach the slider assembly to the rear and front rack post.

  3. Repeat Steps 2a and 2b with the other slider assembly on the other side of the router.

    Figure 23. Rack-Mount Slider Assembly on a 19-inch 4-Post Rack

    1

    		 Outer slider (of the slider assembly)

    2

    Inner slider (of the slider assembly)

    3

    Screws

    4

    Slider rail

    Note

     

    In case of a 23-inch 2-post rack, mount the slider assembly on the extension brackets following the same procedure outlined in Step 2.

Step 2

Install slider brackets to the router as follows:

  1. Determine which end of the chassis is to be located in the cold aisle as follows:

    • If the router has port-side intake modules, position the router so that the ports are in the cold aisle.

    • If the router has port-side exhaust modules, position the router so that the fan and power supply modules are in the cold aisle.

  2. Install the grounding pad on the chassis. Use two M4 x 5.7 mm screws with 12 in-lbs (1.4 N-m).

    Figure 24. Install the Grounding Pad

    1

    		 Grounding pad

    2

    Screws

  3. With the slider bracket ears aligned to the front of the chassis as shown in the image, use ten M4 x 5.7 mm flat-head screws with 12 in-lbs (1.4 N-m) to attach the bracket to the chassis.

  4. Repeat 3c with the other slider bracket on the other side of the router.

    Figure 25. Mount Slider Brackets

    1

    		 Slider bracket

    2

    		 Screws

    3

    Grounding pad

Step 3

Install the router onto the 4-post rack as follows:

  1. Holding the router with both hands, position the back of the router between the front posts of the rack.

  2. Move the router until the slider brackets come in contact with slider rails installed in the rack. Slide the slider brackets onto the slider rails, and then gently move the router all the way into the rack.

  3. Hold the chassis level while the second person inserts five screws (12-24) in each of the two rack-mount brackets (using a total of ten screws) and into the cage nuts or threaded holes in the vertical rack-mounting rails.

  4. Tighten the 12-24 screws (pan-head) to 30 in-lb (3.39 N.m).

Figure 26. 19-inch 4-Post Rack Mount Chassis

1

 Screws

2

Grounding pad

Ground the Cisco 8712-MOD-M Router


Warning

Statement 1024—Ground Conductor

This equipment must be grounded. To reduce the risk of electric shock, never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.


Warning

Statement 1046—Installing or Replacing the Unit

To reduce risk of electric shock, when installing or replacing the unit, the ground connection must always be made first and disconnected last.

If your unit has modules, secure them with the provided screws.


Caution
Grounding the chassis is required, even if the rack is already grounded. A grounding pad with two threaded holes is provided on the chassis for attaching either a grounding lug or grounding cover plate. The ground lug must be NRTL-listed. In addition, a copper conductor (wires) must be used and the copper conductor must comply with NEC code for ampacity.

Caution
When terminating the frame ground, do not use soldering lug connectors, screwless (push-in) connectors, quick connect connectors, or other friction-fit connectors.

Procedure

Step 1

Use a wire-stripping tool to remove approximately 0.75 inches (19 mm) of the covering from the end of the #6 AWG grounding cable.

Step 2

Insert the stripped end of the grounding cable into the open end of the grounding lug.

Step 3

Use the crimping tool to secure the grounding cable in the grounding lug.

In Cisco 8712-MOD-M routers, vertical crimping is required to secure the grounding cable.

Step 4

Attach the ground cable:

  1. Remove the adhesive label from the grounding pad on the chassis.

  2. Place the grounding lug against the grounding pad so that there is solid metal-to-metal contact, and insert the provided screws with washers through the holes in the grounding lug and into the grounding pad.

    Figure 27. 8712-MOD-M Ground Lug

    1

    Ground lug

    2

    Pan-head screws

    3

    Washer

    4

    Grounding pad

  3. Attach one end of the shelf ground cable (#6 AWG cable) to the grounding cover plate using the specified dual-hole lug connector.

Step 5

Tighten the pan-head screws to torque value of 11.5 in-lbs (1.3 N-m).

Step 6

Ensure that the lug and cable do not interfere with other equipment.

Step 7

Prepare the other end of the grounding cable and connect it to an appropriate grounding point in your site to ensure adequate earth ground.

Install Cable Management Brackets

Install a Cable Management Bracket on Cisco 8711-32FH-M

To install a cable-management bracket, follow these steps:

Before you begin

The chassis must be installed and secured to the rack.

Required tools and equipment:

  • Phillips screwdriver with a torque capability (customer supplied)

  • Cable management bracket


Note

  • The cable management bracket is shipped with the chassis.

  • The cable management bracket for Cisco 8711-32FH-M router supports only fiber-optics cables.

Procedure

Step 1

Remove the middle screw from the left side of the chassis. Save the screw for re-installation.

Step 2

Align the cable management bracket with the chassis on the left side as shown in the image.

Note

 

The right side of the chassis is reserved for installing the ground lug.
Figure 28. Install Cable Management Bracket on the Cisco 8711-32FH-M Router

1

Cable management bracket

2

Screws

Step 3

Tighten the M5 (12-24) screws to 27.88 in-lb (3.1 N.m) on the left side.