Cisco ASR 920 series User manual

Installing the Cisco ASR 920 Series Router
This chapter describes how to install the Cisco ASR 920 Series Router and includes the following sections:
•Prerequisites, on page 1
•Installing the Router in a Rack, on page 1
•Wall Mounting the Cisco ASR 920 Series Router, on page 8
•Install the AC Power Cables, on page 11
•Install the DC Power Supply, on page 13
•Connect SFP Modules, on page 16
•Connect Gigabit Ethernet Ports, on page 20
•Install the Chassis Ground Connection, on page 21
•Power Connection Guidelines, on page 23
•Connect Chassis to Network, on page 25
Prerequisites
Before installing the Cisco ASR 920 Series Router, it is important to prepare for the installation by:
• Preparing the site (site planning) and reviewing the installation plans or method of procedures (MOP).
See “Site Planning” section on page 2-9 .
• Unpacking and inspecting the Cisco ASR 920 Series Router. See “Receiving the Cisco ASR 920 Series
Router” section on page 2-20 .
• Gathering the tools and test equipment required to properly install the Cisco ASR 920 Series Router. See
“Tools and Equipment” section on page 2-21 .
For more instructions on how to prepare for the installation of the Cisco ASR 920 Series Router, see Chapter
2, “Preparing for Installation.”
Installing the Router in a Rack
The following sections describe how to install the Cisco ASR 920 Series Router in a rack. The procedures in
this section apply to both horizontal and vertical mounting of the router in a rack:
Installing the Cisco ASR 920 Series Router
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Installing the Chassis Brackets
The chassis is shipped with mounting brackets that can be installed on the front or rear of the chassis. To
install the brackets on the front of the chassis, perform these steps:
SUMMARY STEPS
1. Remove the rack-mount brackets from the accessory kit and position them beside the router chassis.
2. Position one of the brackets against the chassis side, and align the screw holes.
3. Secure the bracket to the chassis with the screws removed when performing Step 1 . The recommended
maximum torque is 10 in.-lb.
4. Repeat Step 2 and Step 3 for the other bracket.
DETAILED STEPS
Step 1 Remove the rack-mount brackets from the accessory kit and position them beside the router chassis.
The figure below shows how to attach the brackets at the front, middle, and rear positions on the Cisco ASR 920 Series
Router for a 19-inch EIA rack.
Figure 1: Attaching Mounting Brackets for a 19-inch EIA Rack (Front, Middle, and Rear Positions)
Installing the Cisco ASR 920 Series Router
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Installing the Cisco ASR 920 Series Router
Installing the Chassis Brackets

Figure 2: Shows how to attach the brackets on the Cisco ASR 920 Series Router for a 23-inch cabinet.
Figure 3: Attaching Mounting Brackets for a 23-inch Cabinet (Front, Middle, and Rear Positions)
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Installing the Cisco ASR 920 Series Router
Installing the Chassis Brackets

Figure 4: Attaching Mounting Brackets for a 300 mm ETSI Cabinet (Front, Middle, and Rear Positions)
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Installing the Cisco ASR 920 Series Router
Installing the Chassis Brackets

Step 2 Position one of the brackets against the chassis side, and align the screw holes.
Step 3 Secure the bracket to the chassis with the screws removed when performing Step 1 . The recommended maximum torque
is 10 in.-lb.
Step 4 Repeat Step 2 and Step 3 for the other bracket.
Installing the Router Chassis in the Rack
Ensure adequate air flow when mounting the router in a rack. For more information, see the “Air Flow
Guidelines” section on page 11 .
Note
Install the cable guides before installing the router in a 19-inch EIA rack. See Attaching the Cable Guides.
Note
To install the router chassis in the equipment rack, perform these steps:
Installing the Cisco ASR 920 Series Router
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Installing the Cisco ASR 920 Series Router
Installing the Router Chassis in the Rack

SUMMARY STEPS
1. Position the chassis in the rack as follows:
2. Align the mounting holes in the bracket (and optional cable guide) with the mounting holes in the equipment
rack.
3. Install the four M6x12mm zinc-plated steel screws through the holes in the bracket and into the threaded
holes in the equipment rack posts.
4. Use a tape measure and level to verify that the chassis is installed straight and level.
DETAILED STEPS
Step 1 Position the chassis in the rack as follows:
• If the front of the chassis (front panel) is at the front of the rack, insert the rear of the chassis between the mounting
posts.
• If the rear of the chassis is at the front of the rack, insert the front of the chassis between the mounting posts.
Step 2 Align the mounting holes in the bracket (and optional cable guide) with the mounting holes in the equipment rack.
The following figure shows how to install the Cisco ASR 920 Series Router in a 19-inch EIA rack.
Figure 5: Installing the Chassis in a 19-inch EIA Rack
Step 3 Install the four M6x12mm zinc-plated steel screws through the holes in the bracket and into the threaded holes in the
equipment rack posts.
Step 4 Use a tape measure and level to verify that the chassis is installed straight and level.
Attaching the Cable Guides
The Cisco ASR 920 Series Router supports the following cable guides:
• A920-CBL-GUIDE (left and right)—help in routing the cables from all components on the front panel
thereby enabling a proper cable-bending radius.
Installing the Cisco ASR 920 Series Router
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Installing the Cisco ASR 920 Series Router
Attaching the Cable Guides

If the chassis is mounted using 19-inch brackets, you must assemble the cable guides before installing the
chassis on the rack.
Note
To install the cable guides, perform these steps:
SUMMARY STEPS
1. Position the cable guide-left and cable guide-right against the front of the chassis and align the four screw
holes, as shown in the fgure below.
2. Secure the cable guides with the four M6x12mm screws supplied with the cable kit. The recommended
maximum torque is 3N-m.
DETAILED STEPS
Step 1 Position the cable guide-left and cable guide-right against the front of the chassis and align the four screw holes, as shown
in the fgure below.
Figure 6: Cable Guide Installation For 19-inch Rack Brackets
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Installing the Cisco ASR 920 Series Router
Attaching the Cable Guides

Figure 7: Cable Guide Installation For ETSI Rack Brackets
Step 2 Secure the cable guides with the four M6x12mm screws supplied with the cable kit. The recommended maximum torque
is 3N-m.
Figure 8: Installing the Cable Guides (As Per the Standard Kit)
Wall Mounting the Cisco ASR 920 Series Router
To install the Cisco ASR 920 Series Router on a wall, follow the instructions in these procedures:
Attaching the Brackets to the Router for Wall-Mounting
While wall mounting the Cisco ASR 920 Series Router, always ensure that the power supplies are at the top
position.
Note
Installing the Cisco ASR 920 Series Router
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Installing the Cisco ASR 920 Series Router
Wall Mounting the Cisco ASR 920 Series Router

The figure below shows how to attach a 19-inch bracket to one side of the router. Follow the same steps to
attach the second bracket to the opposite side.
Figure 9: Attaching 19-inch Brackets for Wall Mounting
Mounting Cisco ASR 920 Series Router on the Wall
For the best support of the Cisco ASR 920 Series Router and cables, ensure the router is attached securely to
wall studs or to a firmly attached plywood mounting backboard.
Suitable for mounting on and over a concrete or other non-combustible surface only. Statement 345
Warning
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Installing the Cisco ASR 920 Series Router
Mounting Cisco ASR 920 Series Router on the Wall

Before mounting the router, ensure that all unused holes at the sides of the router are always protected by
screws.
Figure 10: Installing Screws in Unused Holes Before Wall Mounting the Router
Caution
Mount the router with the front panel as shown in the following figure.
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Installing the Cisco ASR 920 Series Router
Mounting Cisco ASR 920 Series Router on the Wall

Figure 11: Mounting the Router on the Wall
When mounting the router vertically, ensure that the power supplies are at the top.
Caution
Install the AC Power Cables
To install the AC power cables in the power supply slots:
SUMMARY STEPS
1. Attach the AC power retainer chord as shown in the figure below.
2. Lift the power retainer and plug in the AC power supply.
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Installing the Cisco ASR 920 Series Router
Install the AC Power Cables

DETAILED STEPS
Step 1 Attach the AC power retainer chord as shown in the figure below.
Figure 12: Attaching the AC Power Retainer Chord
Step 2 Lift the power retainer and plug in the AC power supply.
Push the retainer chord towards the power supply chord to lock it in place.
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Installing the Cisco ASR 920 Series Router
Install the AC Power Cables

Figure 13: Locking the Power Retainer Chord
Install the DC Power Supply
When installing DC power supply, use 14 AWG, 90°C wires. Always ensure that the building’s installation
for short-circuit (overcurrent) protection does not exceed 15A.
Note
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Installing the Cisco ASR 920 Series Router
Install the DC Power Supply

The DC connector or terminal block has an inbuilt screw and cage nut to which a torque of 1.3 to 1.8 N-m
can be applied.
Note
Figure 14: DC Connector With Inbuilt Screw
0.27 inchesC0.97 inchesA
0.81 inchesM0.31 inchesB
To attach the DC power supplies:
SUMMARY STEPS
1. Open the DC power supply guard.
2. Attach the DC supply wires in the designated screws. See the figure below.
3. Close the DC power supply guard.
DETAILED STEPS
Step 1 Open the DC power supply guard.
Step 2 Attach the DC supply wires in the designated screws. See the figure below.
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Installing the Cisco ASR 920 Series Router
Install the DC Power Supply

Figure 15: Using the DC Power Supply Guard
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Installing the Cisco ASR 920 Series Router
Install the DC Power Supply

Figure 16: Attaching the DC Power Supply
Step 3 Close the DC power supply guard.
Power on the Device
After the device is mounted, perform these tasks to complete the installation:
• Power on the device.
• Connect the front-panel ports.
Connect SFP Modules
Before you begin this task, ensure that you have read and understood the safety warnings in the Safety
Precautions for Module Installation and Removal section of the Safety Warnings chapter.
Use only Cisco SFP modules on a Cisco device. Each SFP module has an internal serial EEPROM that is
encoded with security information. This encoding provides a way for Cisco to identify and validate that the
SFP modules meet the requirements of the device.
We recommend that you wait for 30 seconds between the removal and insertion of an SFP module from the
device. The wait period allows the transceiver software to initialize and synchronize with the device. Changing
an SFP before this wait period could result in transceiver initialization issues that disable the SFP.
Caution
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Installing the Cisco ASR 920 Series Router
Power on the Device

This section provides procedures for installing and connecting SFP modules. Also, it provides the procedure
for removing SFP modules.
Install SFP Modules
The figure below shows an SFP module that has a bale-clasp latch.
We strongly recommend that you do not install or remove fiber-optic SFP modules with cables attached
because of the potential damage to the cables, the cable connector, or the optical interfaces in the SFP module.
Disconnect all cables before removing or installing an SFP module.
Removing and installing an SFP module can shorten its useful life. Do not remove and insert SFP modules
more often than is absolutely necessary.
Caution
Figure 17: SFP Module with a Bale-Clasp Latch
To insert an SFP module into the module slot, follow these steps:
SUMMARY STEPS
1. Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.
2. If the SFP module that you are using has the markings, use them to identify the top side of the module.
3. Align the SFP module in front of the slot opening.
4. Insert the SFP module into the slot until you feel the connector on the module snap into place in the rear
of the slot.
5. Insert the cable connector into the SFP module:
DETAILED STEPS
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.
Some SFP modules identify the top side of the module with send (TX) and receive (RX) markings or arrows that show
the direction of the connection.
Step 2 If the SFP module that you are using has the markings, use them to identify the top side of the module.
Step 3 Align the SFP module in front of the slot opening.
Step 4 Insert the SFP module into the slot until you feel the connector on the module snap into place in the rear of the slot.
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Installing the Cisco ASR 920 Series Router
Install SFP Modules

Figure 18: Installing an SFP Module into an SFP Module Slot
Do not remove the dust plugs from the fiber-optic SFP module port or the rubber caps from the fiber-optic
cable until you are ready to connect the cable. The plugs and caps protect the SFP module ports and cables
from contamination and ambient light. Store the dust plugs for later use.
Caution
Step 5 Insert the cable connector into the SFP module:
• For fiber-optic SFP modules, insert the LC cable into the SFP module.
• For copper 1000BASE-T SFP modules, insert the RJ-45 cable connector into the SFP module.
Remove SFP Modules
To remove an SFP module from a module receptacle, follow these steps:
SUMMARY STEPS
1. Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.
2. Disconnect the cable from the SFP module, and insert a dust plug into the cable end.
3. Unlock and remove the SFP module, as shown in the following figure.
4. Grasp the SFP module between your thumb and index finger, and carefully remove it from the module
slot.
5. For fiber-optic SFP modules, insert a dust plug into the optical ports of the SFP module to keep the optical
interfaces clean.
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Installing the Cisco ASR 920 Series Router
Remove SFP Modules

6. Place the removed SFP module in an antistatic bag or other protective environment.
DETAILED STEPS
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.
Step 2 Disconnect the cable from the SFP module, and insert a dust plug into the cable end.
For reattachment, note which cable connector plug is send (TX) and which is receive (RX).
Tip
Step 3 Unlock and remove the SFP module, as shown in the following figure.
If the module has a bale-clasp latch, pull the bale out and down to eject the module. If the bale-clasp latch is obstructed
and you cannot use your index finger to open it, use a small, flat-blade screwdriver or other long, narrow instrument to
open the bale-clasp latch.
Figure 19: Removing a Bale-Clasp Latch SFP Module
Step 4 Grasp the SFP module between your thumb and index finger, and carefully remove it from the module slot.
Step 5 For fiber-optic SFP modules, insert a dust plug into the optical ports of the SFP module to keep the optical interfaces
clean.
Step 6 Place the removed SFP module in an antistatic bag or other protective environment.
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Installing the Cisco ASR 920 Series Router
Remove SFP Modules

Connect Gigabit Ethernet Ports
You can choose to connect either a copper or a fiber cable in the Gigabit Ethernet ports.
The device 10/100/1000 ports configure themselves to operate at the speed of devices to which they are
attached. Autonegotiation is enabled by default in the chassis. You can manually set the speed and the duplex
parameters. If the device to which the ports are attached, does not autonegotiate, low performance or no linkage
may result.
Note
To maximize performance, choose one of these methods for configuring Ethernet ports:
• Have ports autonegotiate both speed and duplex.
• Set the port speed and duplex parameters on both ends of the connection.
You can use the mdix auto command in interface configuration mode in CLI to enable automatic
media-dependent interface with crossover detection. After you enable, the device detects the required cable
type for copper Ethernet connections and configures the interfaces accordingly. Therefore, you can use either
a crossover or a straight-through cable for connecting to a copper 10/100/1000 port. If the mdix auto command
is not enabled, connect the cable through SFP module.
Note
SUMMARY STEPS
1. Connect to workstations, servers, and devices, connect a straight-through cable to an RJ-45 connector on
the front panel. When connecting to devices or repeaters, use a crossover cable.
2. Connect the other end of the cable to an RJ-45 connector on the other device. The port LED turns on when
both the device and the connected device have established a link.
3. Reconfigure and reboot the connected device if necessary.
4. Repeat Steps 1 to 3 for each device that is to be connected.
DETAILED STEPS
Step 1 Connect to workstations, servers, and devices, connect a straight-through cable to an RJ-45 connector on the front panel.
When connecting to devices or repeaters, use a crossover cable.
Step 2 Connect the other end of the cable to an RJ-45 connector on the other device. The port LED turns on when both the device
and the connected device have established a link.
If the port LED does not turn on, check whether the device at the other end is turned on or whether there is any failure.
On user network interface (UNI) ports, the port LED turns green after the link is established.
Note
Step 3 Reconfigure and reboot the connected device if necessary.
Step 4 Repeat Steps 1 to 3 for each device that is to be connected.
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Installing the Cisco ASR 920 Series Router
Connect Gigabit Ethernet Ports