Cisco ASR-920-12SZ-IM and ASR-920U-12SZ-IM Aggregation Services Router Quick Start Guide


Note

The Cisco ASR-920-12SZ-IM and Cisco ASR-920U-12SZ-IM are collectively referred to as the Cisco ASR-920-12SZ-IM Router in this document. Any differences between the routers are specifically called out.

The Cisco ASR 920 Series Aggregation Services Router is a family of fixed configuration routers that provides common network architecture to the Service Providers for macro and small cell networks.

This router acts as an access device for mobile backhaul services—macro Cell Site Router (CSR) and Small Cell Router (SCR). As an access device, it provides capabilities like 1GE/10GE, MPLS, H-QoS, Services, GPS clocking, PoE and fit within ETSI 300 mm depth cabinet. It can easily be integrated into the Unified MPLS for Mobile Transport (UMMT) and Fixed Mobile Convergence (FMC) solution.

Overview

The following figures show the port numbering for the Cisco ASR 920 router:

Figure 1. Front Panel of Cisco ASR-920-12SZ-IM Router—With DC Power Supply
Figure 2. Front Panel of Cisco ASR-920-12SZ-IM Router—With AC Power Supply

1

Power Supply 0 (AC or DC)

10

Alarm port

2

Power Supply 1 (AC or DC)

11

Eight Copper port (1G PoE)

Note 

Port 0 is located at the bottom right, port 1 is located at the top right, and so on.

3

Front Air-Inlet Area

12

ToD port

4

GNSS RF IN (SMA threaded connector)

13

Management Port

5

DIN 1.0/2.3 Snap-in connector (10MHZ)

14

USB Memory port

6

DIN 1.0/2.3 Snap-in connector (1PPS)

15

USB Console port

7

Four 1G/10G SFP+

16

Zero Touch Provisioning button

8

Interface Module

17

RS232 Console port

9

Four 1G SFP

18

RS232 Aux Console port

Figure 3. Rear View of Cisco ASR-920-12SZ-IM Router

1

Fan tray

3

Air vents

2

Grounding lug

—

The following table describes the other features of Cisco ASR-920-12SZ-IM (AC and DC) Router.

Table 1. Cisco ASR-920-12SZ-IM Router Specifications

Specification

ASR-920-12SZ-IM

DimensionWidth x Depth x Height

17.5 x 9.88 x 1.73 inches

Weight

Total weight: 4.83 kg

Weight of PSU: 0.59 kg

Weight of Fan: 0.33 kg

Rack Unit

One RU

Airflow

Front to back

Cable access

Front cable access

System throughput

60 Gbps, 95 Mpps

Power Supply

Redundant

Yes

AC

Yes

Voltage Range

85V AC to 264V AC, nominal 100/240 VAC

Frequency Range

47 Hz to 63 Hz, nominal 50/60 Hz

Maximum Power

360 W

DC

Yes

Voltage Range

-18 VDC to -32 VDC or -40 VDC to -72 VDC

Nominal Voltage Range

-24 VDC/-48 VDC/-60 VDC

Maximum Power

375 W

Operating Temperature

–40º C to 70º C

Alarms

  • 4 alarm dry contact inputs (normally open)

  • LED indicators for critical, major, and minor alarms

Supported Interface Modules

For more information on these IM modules, see the Cisco ASR 903 Aggregation Series Router Hardware Installation Guide.

For more information on the supported IMs, see the Cisco ASR920 Data sheet.

Mounting option

  • Front or rear rail 19 or 23 inches

  • ETSI 300 mm open cabinet

  • Wall mount

Port Configuration

12x1G and 4x10G/1G ports

Port Numbering

4x10G SFP+ – Port [12:15]

4x1G SFP – Port [8:11]

8x1G PoE RJ45/Cu ports [0:7]

Combo Ports

Ports 12 to 15 are Dual Rate ports

Copper/1G/10G Port LEDs

Link/Activity/Fault

Temperature Sensors

Four temperature sensors

1PPS/ToD

External ports for 1PPS/TOD

PoE

Provides power over Ethernet

GNSS

Connects to the external GPS

Figure 4. Cisco ASR-920-12SZ-IM Router—Dimensions

External Interfaces

The external physical interfaces on the front panel of the router are:

  • Network Interfaces

  • Network Timing Interfaces

  • External Alarm Inputs

  • Management Interfaces

    • Mangement ENET Port

    • RS232 Console Port

    • USB Console

    • USB Mass Storage

    • Zero Touch Provisioning (ZTP)

    • RS232 Auxiliary Console Port

Power Supply

The router supports AC, DC, or a combination of both power supplies in a 1+1 redundant configuration. For information on installing the power supplies, see the Installing the Power Supply section.


Note
If only one PSU is present, a successful firmware upgrade to either primary or secondary microcontroller unit (MCU) triggers a reload of device and is reloaded before any warning messages are displayed.
Table 2. Power Supply Specification

Specification

AC (A920-PWR400-A)

DC (A920-PWR400-D)

Input Voltage

85–264, nominal 100VAC, 240VAC

47–63 Hz, nominal 50/60 Hz

18–32 VD or -40 to -72 VDC

Nominal - 24V VDC, or -48VDC, or -60VDC

Maximum Input Power

375W (with PoE power of 180W)

150W Max (No PoE)

375W (with PoE power of 180W)

150W Max (No PoE

Redundant

Yes

Yes

How Swap

Yes

Yes

Current sharing

Yes

Yes

Input Connector

IEC60320, C15 style receptacle

Two-position terminal block

Note
This product requires surge protection as part of the building installation. To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, an external surge protective device (SPD) is required at the AC power service equipment.

Note
For DC systems, if a surge of more than 500 V is expected, add an appropriate external surge protective device.

Note

The routers support AC and DC power supplies in a 1+1 redundant configuration.

One AC and one DC power supply in the same router is also a supported configuration.

The router has a single fan-tray with four fans. The system is designed to operate at its maximum operating temperature of 70º C, in case of failure of a single fan operating temperature of 65º C. The fan tray is field-replaceable.

Licensing

The router supports the following types of licenses:

  • Port Licensing—Port Upgrade license is available as a "Pay as you Grow" model.
    • 6 ports 1GE upgrade license
    • 2 ports 10G upgrade license
    • Bulk License to enable 12x1port 1GE and 4x10GE ports
  • Advanced Metro IP Access
  • Metro IP Access
  • Metro Access (default)
  • Feature licensing

The following methods are used to activate the above licenses:

  • Cisco Software Licensing—The Cisco Software License Activation feature is a set of processes and components to activate Cisco software feature sets by obtaining and validating fee-based Cisco software licenses.

Note
Licenses generated by the Cisco Software Licensing are tied to the UDI of the chassis and a corresponding watchtower device certificate (WDC) is stored in the system.
  • Cisco Smart Licensing—Smart Licensing is usage-based licensing where devices register with the Cisco Secure server.

Installing the Router in a Rack

Each Cisco ASR 920 Series Aggregation Services Router router includes rack-mounting brackets. Using the rack-mounting brackets, you can mount the router in a 19-inch, 23-inch, or an ETSI rack that conforms to the EIA-310-D specification.

Using the two rack-mounting brackets for mounting, you can recess the router in the equipment rack. This arrangement provides extra space in front of the router for the cables and allows you to close the doors of racks equipped with front-close doors.

To attach or replace the rack-mounting brackets, see the Attaching Brackets to the Router section.

The rack-mounting brackets are slotted to allow the router to be mounted in racks with EIA 1.25-inch (3.175-cm) or WECO 1.0-inch (2.54-cm) hole spacing. When installed in the rack, the router requires one EIA 1.75-inch (4.4-cm) vertical mounting space (or 1 rack unit [RU]) for mounting (see the Mounting the Router in a Rack section).


Caution

Allow clearance on either side of the router for cooling air to be drawn in through the right side and circulated through the chassis and out the three-fan exhaust ports mounted on the other side of chassis.

The sections describe how to install the router in a rack. The procedures in this section apply to both horizontal and vertical mounting of the router in a rack:

Attaching Brackets to the Router

To attach the router on a 19-inch rack, use the 19-inch brackets (part number 700-39959-01).


Note
The bracket mounting screws are pre-installed on the router. Depending on the bracket mounting position of the chassis, you must remove the appropriate screws, fix the bracket, and install the screws again.

For more information on brackets, see the Cisco ASR-920-12SZ-IM and ASR-920U-12SZ-IM Aggregation Services Router Hardware Installation Guide.

Attaching Brackets for 19-Inch Racks

The following figure shows how to attach brackets for 19-inch racks on the router.

Figure 5. Attaching Brackets for 19-Inch Racks

1

Phillips flat-head screws

2

Front-mounting position

3

Mid-mounting position

4

Rear-mounting position

Mounting the Router in a Rack

Perform the steps given below to mount the router into the equipment rack.


Note
To secure the router to the equipment rack, you must use the two mounting screws (provided) for each side or follow your local practices for installing the router into your equipment rack. Ensure that the rack-mount brackets are securely fastened. For more information, see the Attaching Brackets to the Router section in the Cisco ASR-920-12SZ-IM and ASR-920U-12SZ-IM Aggregation Services Router Hardware Installation Guide.

SUMMARY STEPS

  1. Locate the equipment rack position where you plan to install the router.
  2. Verify that there are no obstructions and ensure that the equipment rack is stabilized.
  3. Locate the mounting holes of the router.
  4. Align the rack-mounting bracket with the router and position with the four #6-32 x 0.25-inch screws (provided).
  5. Insert the screws (four places) and tighten using a Number 2 Phillips screwdriver (each side).
  6. Position the router in the equipment rack lining up the bracket holes on the router with the holes on the rack and secure with four #6-32 x 0.25-inch mounting screws (two on each side).
  7. Tighten the screws using a 1/4-inch flat-blade screwdriver (each side). The recommended maximum torque is 10 in.-lb.

DETAILED STEPS

Step 1

Locate the equipment rack position where you plan to install the router.

Step 2

Verify that there are no obstructions and ensure that the equipment rack is stabilized.

Step 3

Locate the mounting holes of the router.

Step 4

Align the rack-mounting bracket with the router and position with the four #6-32 x 0.25-inch screws (provided).

Step 5

Insert the screws (four places) and tighten using a Number 2 Phillips screwdriver (each side).

Step 6

Position the router in the equipment rack lining up the bracket holes on the router with the holes on the rack and secure with four #6-32 x 0.25-inch mounting screws (two on each side).

Step 7

Tighten the screws using a 1/4-inch flat-blade screwdriver (each side). The recommended maximum torque is 10 in.-lb.

Installing the Router Chassis in the Rack


Note
Ensure adequate air flow when mounting the router in a rack. For more information, see the Air Flow Guidelines section in the Cisco ASR-920-12SZ-IM and ASR-920U-12SZ-IM Aggregation Services Router Hardware Installation Guide.

Note
Install the cable guides before installing the router in a 19-inch EIA rack. See the Attaching the Cable Guides section in the Cisco ASR-920-12SZ-IM and ASR-920U-12SZ-IM Aggregation Services Router Hardware Installation Guide.

To install the router chassis in the equipment rack, perform these steps:

Procedure

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 router in a 19-inch EIA rack.

Figure 6. 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.

Installing SFP Modules

The following figure shows an SFP module that has a bale-clasp latch.


Caution
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.
Figure 7. SFP Module with a Bale-Clasp Latch

To insert an SFP module into the module slot, follow these steps:

Procedure

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.

Figure 8. Installing an SFP Module into an SFP Module Slot
Caution 

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.

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.

Installing the Chassis Ground Connection

Before you connect the power or turn on the power to the router, you must provide an adequate chassis ground (earth) connection to your router.

This section describes how to ground the chassis. The grounding lug location is on the back panel of the router.


Tip

Ensure that the grounding lug wire does not cover the fan opening.

Figure 9. Attaching a Grounding Lug to the Rear of the Router

1

Grounding-lug

To ensure that the chassis ground connection that you provide is adequate, you need the following parts and tools:

  • Ratcheting torque screwdriver with Phillips head that exerts up to 15 in.-lb (1.69 N-m) of torque for attaching the ground wire to the router
  • Crimping tool as specified by the ground lug manufacturer
  • 6-AWG or larger copper wire for the ground wire
  • Wire-stripping tools appropriate to the wire you are using

Caution

Before making connections to the router, ensure that you disconnect the power at the circuit breaker. Otherwise, severe injury to you or damage to the router may occur.


Caution

Electric Shock Hazard: This fan tray has to be serviced by trained personnel only.


Warning

This equipment must be grounded. 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. Statement 1024


Warning

Use copper conductors only. Statement 1025


Warning

When installing the unit, the ground connection must always be made first and disconnected last. Statement 42

This unit is to be installed in a restrictive access location and must be permanently grounded to a minimum 6-AWG copper ground wire.

Perform the following procedure to ground the router using a 2-hole lug and the corresponding mounting point. Most carriers require a minimum 6-AWG ground connection. Verify your carrier’s requirements for the ground connection.

Procedure

Step 1

If your ground wire is insulated, use a wire-stripping tool to strip the ground wire to 0.5 inch ± 0.02 inch (12.7 mm ±0.5 mm).

Figure 10. Stripping a Ground Wire
Step 2

Slide the open end of your 2-hole ground lug over the exposed area of the ground wire.

Step 3

Using a crimping tool (as specified by the ground lug manufacturer), crimp the ground lug to the ground wire as shown in the following figure.

Figure 11. Crimping a Ground Lug on to the Ground Wire
Step 4

Use a Phillips head screwdriver to attach the 2-hole ground lug and wire assembly to the router with the 2 pan-head Phillips head screws.

Step 5

Connect the other end of the ground wire to a suitable grounding point at your site.

Installing the Fan Tray

Follow these steps to install the fan tray in the chassis:


Caution

Electric Shock Hazard: This fan tray has to be serviced by trained personnel only.


Caution

Always wear the ESD wrist strap when installing or uninstalling the fan tray.


Caution

Unplug all power sources before performing this procedure.

Procedure

Step 1

Orient the fan tray so that the captive screws are aligned to the chassis cavity on the back panel. See the following figure.

Figure 12. Installing the Fan Tray in the Chassis
Step 2

Push the fan assembly into the chassis until the power connector seats in the backplane and the captive installation screws make contact with the chassis.

Step 3

Tighten the captive installation screws, using a flat-blade or number 2 Phillips-head screwdriver.

Installing an Interface Module


Caution

Before inserting an interface module, make sure that the chassis is grounded.

Procedure

Step 1

To insert the interface module, carefully align the edges of the interface module between the upper and lower edges of the router slot.

Step 2

Carefully slide the interface module into the router slot until the interface module makes contact with the backplane.

Step 3

Tighten the locking thumbscrews on both sides of the interface module. The recommended maximum torque is 5.5 in.-lb (.62 N-m).

Step 4

Connect all the cables to each interface module.

Installing the DC Power Supply Module

This equipment is suitable for installation in Network Telecommunications Facilities and locations where the NEC applies.

This equipment is suitable for installations utilizing the Common Bonding Network (CBN).

The grounding architecture of this product is DC-Isolated (DC-I) for DC-powered products. DC-powered products have a nominal operating DC voltage of 48 VDC.

Perform the following procedure to install the power supply module:

Procedure

Step 1

Ensure that the system (earth) ground connection has been made. See the following figure.

Step 2

If necessary, remove the blank power supply filler plate from the chassis power supply bay opening by loosening the captive installation screws.

Step 3

Verify that power to the DC circuit connected to the power supply you are installing is off. To ensure that power has been removed from the DC circuits, locate the circuit breakers for the DC circuits, switch the circuit breakers to the OFF position, and tape the circuit-breaker switches in the OFF position.

Step 4

Grasp the power supply handle with one hand. Place your other hand underneath the power supply. Slide the power supply into the power supply bay. Make sure that the power supply is fully seated in the bay.

Step 5

Tighten the captive installation screws of the power supply. The recommended maximum torque is 5.5 in.-lb (0.62 N-m).

Figure 13. Installing the DC Power Supply Module

Activate a DC Power Supply Module

Perform the following procedure to activate a DC power supply:

Procedure
Step 1

Remove the tape from the circuit-breaker router handle, and restore power by moving the circuit-breaker router handle to the On (|) position.

Step 2

Verify power supply operation by checking if the respective power supply front panel LED (PS0 or PS1) is green.

Step 3

If the LEDs indicate a power problem, see Troubleshooting.

Step 4

If you are connecting a redundant DC power supply, repeat these steps for the second power source.

Note 
If you are connecting a redundant DC power supply, ensure that each power supply is connected to a separate power source in order to prevent power loss in the event of a power failure.

Install the AC Power Cables

To install the AC power cables in the power supply slots:

Procedure

Step 1

Plug the power supply cord in the power supply module.

Step 2

Insert the power supply cord into the tie [1,3] and tighten the tie around the power supply cord as shown in [2,4] in the figure below.

Figure 14. Attach the AC Power Tie-and-Clip Cord
Note 
These images are for only representation purposes. Certain variants of Cisco NCS 540 do not include a tie for the power supply cord.

Activate an AC Power Supply Module

Perform the following procedure to activate an AC power supply:

Procedure
Step 1

Plug the power cord into the power supply.

Step 2

Connect the other end of the power cord to an AC-input power source.

Step 3

Verify power supply operation by checking if the respective power supply front panel LED (PS0 or PS1) is green.

Step 4

If the LEDs indicate a power problem, see Troubleshooting for troubleshooting information.

Step 5

If you are connecting a redundant AC power supply, repeat these steps for the second power source.

Note 
If you are connecting a redundant AC power supply, ensure that each power supply is connected to a separate power source in order to prevent power loss in the event of a power failure.

Connecting Console Cables

The sections describe how to connect to the router using console cables:

Connecting to the USB Serial Port Using Microsoft Windows

This procedure shows how to connect to the USB serial port using Microsoft Windows.


Note
Install the USB device driver before establishing a physical connection between the router and the PC, by using the USB console cable plugged into the USB serial port. Otherwise, the connection will fail. For more information, see the Installing the Cisco USB Device Driver section in the Cisco ASR-920-12SZ-IM and ASR-920U-12SZ-IM Aggregation Services Router Hardware Installation Guide.
Procedure
Step 1

Connect a USB Type A-to-Type A cable to the USB console port. If you are using the USB serial port for the first time on a Windows-based PC, install the USB driver now according to the instructions in the following sections:

Note 
You cannot use the USB port and the EIA port concurrently. When the USB port is used, it takes priority over the EIA port.
Step 2

Connect the USB Type A cable to the PC.

Step 3

To communicate with the router, start a terminal emulator application, such as Microsoft Windows HyperTerminal. This software should be configured with the following parameters:

  • 9600 baud
  • 8 data bits
  • no parity
  • 1 stop-bit
  • no flow control

Connecting a USB Flash Device

To connect a USB flash device to the router, insert the memory stick in the USB port labeled USB MEM. The Flash memory module can be inserted only one way, and can be inserted or removed regardless of whether the router is powered up or not.

The following figure shows the USB port connector on the Cisco ASR 920 Series Router.
Figure 15. Flash Token Memory Stick

Configuring the Router at Startup

This section explains how to create a basic running configuration for your router.


Note
You must acquire the correct network addresses from your system administrator or consult your network plan to determine the correct addresses before you can complete the router configuration.

Before continuing the configuration process, check the current state of the router by entering the show version command. This command displays the release of Cisco IOS software that is available on the router.

For information on modifying the configuration after you create it, see the Cisco IOS configuration and Cisco IOS Master Command List, All Releases guides.

To configure a Cisco ASR 920 Series Router from the console, you must connect a terminal or terminal server to the console port on the Cisco ASR 920 Series Router. To configure the router using the management Ethernet port, you must have the router’s IP address.

Accessing the CLI Using the Console

To access the command line interface using the console, follow these steps:

Procedure

Step 1

When your system is booting, type No at the prompt.

Example:


--- System Configuration Dialog ---
Would you like to enter the initial configuration dialog? [yes/no]: no
Step 2

Press Return to enter the user EXEC mode.

The following prompt is displayed:

Example:


Router>
Step 3

From the user EXEC mode, enter the enable command, as shown in the following example:

Example:


Router> enable
Step 4

At the password prompt, enter your system password, as shown in the following example. If an enable password has not been set on your system, you can skip this step.

Example:


Password: enablepass

When your password is accepted, the privileged EXEC mode prompt is displayed:

Example:


Router#

You now have access to the CLI in the privileged EXEC mode. You can enter the necessary commands to complete the required tasks.

Step 5

To exit the console session, enter the quit command, as shown in the following example:

Example:


Router# quit

Configuring Global Parameters

When you first start the setup program, configure the global parameters. These parameters are used for controlling system-wide settings. Perform the following steps to enter the global parameters:

Procedure

Step 1

Connect a console terminal to the console port, and then boot the router. For more information on connecting a console terminal, see Connecting Console Cables section.

Step 2

The first sections of the configuration script appear only at an initial system startup. On subsequent uses of the setup facility, the script begins with a System Configuration Dialog as shown below: When you are prompted about whether you want to enter the initial configuration dialog, enter yes.

Example:


Would you like to enter the initial configuration dialog? [yes/no] yes
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Basic management setup configures only enough connectivity for management of the system, extended setup will ask you to configure each interface on the system.

Basic management setup configures enough connectivity for managing the system; extended setup will ask you to configure each interface on the system.

Checking the Running Configuration Settings

To check the value of the settings you have entered, enter the show running-config command at the Router# prompt:


Router# show running-config

To review the changes you have made to the configuration use the show startup-config command in the user EXEC mode to see the changes and copy run-start stored in the NVRAM.

Saving the Running Configuration to NVRAM

To store the configuration or changes to your startup configuration in NVRAM, enter the copy running-config startup-config command at the prompt:

Router# copy running-config startup-config

Using this command saves the configuration settings that you created in the router using the configuration mode and the setup facility. If you fail to do this, your configuration will be lost, and will not be available when you reload the router next.

Safely Powering Off the Router

This section explains how to shut down the router. We recommend that before turning off all power to the chassis, you issue the reload command. This ensures that the operating system cleans up all the file systems. After the reload operation is complete, the router can be powered off safely.

To power off the router safely,:

Procedure

Step 1

Slip on the ESD-preventive wrist strap included in the accessory kit.

Step 2

Enter the reload command.

Step 3

Confirm the reload command.

Example:


Rmcp-6ru-1#reload
Proceed with reload? [confirm]
Aug 17 00:06:47.051 R0/0: %PMAN-5-EXITACTION: Process manager is exiting: prs exit with reload chassis code
Step 4

After confirming the reload command, wait until the system bootstrap message is displayed before powering off the system:

Example:


System Bootstrap, Version 15.4(3)S1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2012 by cisco Systems, Inc.
Current image running: Boot ROM0
Last reset cause: RSP-Board
UEA platform with 2097152 Kbytes of main memory
Step 5

Remove power cables, if any, from the Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router:

  • For power supplies with a circuit breaker switch, position the switch to the Off (O) position.
  • For power supplies with a standby switch, place the standby switch in the Standby position.
Note 
After powering off the router, wait for a minimum of 30 seconds before powering it on again.