Cisco ASR 902 Manuale

Overview

The Cisco ASR 902 Router and the Cisco ASR 902U Router are collectively referred to as the Cisco ASR

902 Router in this document. Any differences between the routers are specifically called out.

Note

The Cisco ASR 902 Router is a full-featured aggregation platform designed for cost-effective delivery of

converged mobile and business services. With shallow depth, low power consumption, and an extended

temperature range, this compact 2-rack unit (RU) router provides high service scale and flexible hardware

configuration.

The Cisco ASR 902 Router expands the Cisco service provider product portfolio by providing a rich and

scalable feature set of Layer 2 VPN (L2VPN) and Layer 3 VPN (L3VPN) services in a compact package.

It also supports a variety of software features, including Carrier Ethernet features, Timing over Packet, and

pseudowire.

The Cisco ASR 902 Router is positioned as a preaggregation router in IP Radio Access Network (RAN)

(Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS),

Image Maximum (iMAX), Code division multiple access (CDMA), and Long Term Evolution (LTE))

networks or an aggregation router in Carrier Ethernet networks.

•Cisco ASR 902 Router Features, page 1

•Interface Numbering, page 36

•Regulatory Compliance, page 37

Cisco ASR 902 Router Features

The Cisco ASR 902 Router has the following hardware features:

•2-RU modular chassis designed for installation in a 300-mm European Telecommunications Standards

Institute (ETSI) cabinet

•Dedicated slots in the chassis that support the following:

◦Up to four interface modules

◦One Route Switch Processor (RSP)

◦Up to two DC or two AC or a combination of AC and DC power supply units

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

◦One fan tray

•Network frequency, phase, and time inputs and outputs for network interfaces (SyncE and TDM), BITS,

1 PPS or 10 MHz and Timing over Packet (IEEE 1588-2008)

•Adjustable front and rear rail mounting locations

•Front panel access to power supplies, fan tray, RSP, and interface modules

•Online insertion and removal (OIR) of interface modules, power supplies, and fan tray

•Discrete status LEDs on power supply, interface module, RSP, and fan tray units

•Two alarm dry contact inputs (either normally open or normally closed)

•Environmental-monitoring and environmental-reporting functions

•LED indicators for critical, major, and minor alarms

•Side-to-side forced air cooling

•Temperature range of -40 to 149 degrees F (-40 to 65 degrees C) with 550W DC power supply

•Temperature range of 32 to 122 degrees F (-5 to 55 degrees C) with 550W AC power supply

The figure below illustrates the Cisco ASR 902 Router chassis design.

Figure 1: Cisco ASR 902 Router Chassis Design

ComponentLabel

Interface modules1

RSP unit2

Fan tray3

Redundant power units (two DC power units are

shown)

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

Cisco ASR 902 Router Features

System Specifications

The table below summarizes the system specifications and environmental requirements for the Cisco ASR

902 Router.

Table 1: Cisco ASR 902 Router System Specifications

3.56 in. x17.44 in. x 10.565 in. (90.424 x 442.976 x

268.351 mm)

This measurement includes handles from the

power supply, fan tray, and interface

modules installed in the chassis.

Note

Dimensions (Height x Width x Depth)

24.030 pounds (10.9 kg)

This weight includes a power

supply.

Note

Weight

The Cisco ASR 902 Router supports the following

temperature ranges with the DC power supply:

•–60 to 4000 meters: –40 to 104ºF (–40 to +

40ºC)

•–60 to 1800 meters: –40 to 149ºF (–40 to +

65ºC)

The Cisco ASR 902 Router supports the following

temperature ranges with the AC power supply:

•–60 to 4000 meters: 32 to 104ºF (0 to 40ºC)

•–60 to 1800 meters: 23 to 140ºF(–5 to 55ºC)

Operating Temperature

–40 to 185ºF (–40 to +85ºC) storage temperature

Nonoperating Temperature

5 to 95% operating noncondensing relative humidityOperating Humidity

–60 to 1800m operating altitude for full operating

temperature range; up to 4000m at up to 40ºC.

Operating Altitude

4572m storage altitudeNonoperating Altitude

1.0 g from 1.0 to 150 HzVibration

30 G half sine 6 and 11 msShock

Random: 1.15 gRMS 3 to 200 Hz, 30 minutes/axis

Sine: 10 to 500 Hz @ 0.8 G peak/5 sweep cycles/axis

Nonoperating Vibration

< 68.5 dBa @ 27ºCOperating Acoustics

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

System Specifications

Power Supply Features

The Cisco ASR 902 Router supports AC and DC power supplies. For more information about installing the

Cisco ASR 902 Router power supplies, see the Installing the Power Supply section. The power sections

provide more information about the power supply:

Redundancy

The Cisco ASR 902 Router chassis includes a slot for optional redundant power supply. The redundant power

supply option provides a second power supply to ensure that power to the chassis continues uninterrupted if

one power supply fails or input power on one line fails. Redundancy is supported either with identical power

supplies or a combination of AC and DC power supply. The Cisco ASR 902 Router supports current sharing

between the power supplies.

A redundant power supply on the Cisco ASR 902 Router is recommended. Each power supply should be

connected to separate independent power sources to ensure that the router maintains power in the event of a

power interruption caused by an electrical failure, a wiring fault, or a tripped circuit breaker.

To comply with IEC 61850-3 (voltage interruptions), redundant power supplies with separately derived

power feeds are required.

Caution

Dying Gasp

The Cisco ASR 902 Router DC power supply supports the Dying Gasp feature, which allows the router to

provide an input power loss notification to the RSP so that the RSP can send appropriate SNMP traps or OAM

messages and update log files on the router. With the DC power supply, the router supports a minimum input

power loss detection time of 2 milliseconds (DC) and continued operation of at least 6 milliseconds (DC)

after the notification.

Continued DC power supply operation may vary for voltages other than +24/–48V.

Note

Dying Gasp is not supported on the ASR 900 RSP3 module with the 1200 W DC power supply.Note

Status LEDs

LEDs are also provided on each power supply to indicate the status of the input power and the health of the

power supply. For more information about the LEDs on the Cisco ASR 902 Router, see Troubleshooting.

DC Power Specifications

The Cisco ASR 902 Router uses a +24/-48 DC voltage power supply (with DC voltage tolerance from -19 to

-72 VDC).

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

Power Supply Features

The power supply provides 550W output power for the system. The power supply is field replaceable, hot

swappable, and operates separately from the fan tray. The power supply contains a front panel with mounting

screws, a handle for insertion and removal, and two status LEDs. No ON/OFF switch is provided.

The DC PSU models supported on the router are:

•A900-PWR550-D—Uses an Euro-style three-position terminal block connector ( Figure 1-2 )

•A900-PWR550-D-E—Uses a T-shaped connector ( Figure 1-3 )

•A900-PWR1200-D—Provides 975 W output power for system 12 V power with the A902-FAN-E

module. As most of the system configurations using A900-RSP3C-200-S RSP modules require power

exceeding 550 W, we recommend using the A900-PWR1200-D power supply with A900-RSP3C-200-S

RSP modules. ( Figure 1-4 )

Figure 2: DC PSU Module (A900-PWR550-D) with Euro-Style Connector

ComponentLabel

Euro-style connector1

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

Power Supply Features

Figure 3: DC PSU (A900-PWR550-D-E) with T-Shaped Connector

ComponentLabel

T-shaped connector1

Table 2: DC Power Supply Specifications

‘

(550 W)

A900-PWR550-D, A900-PWR550-D-EPart numbers

+24 VDC/–48 VDC

Nominal input voltage specification

–19.2 VDC to –72 VDC

Input voltage range

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

Power Supply Features

+12 VDCOutput voltage

12 AWG minimum for –48/-60 VDC

8 AWG minimum for 24 VDC

Connector accepts 8 AWG maximum

Wire gauge for DC input power connections

550 WMaximum power output

Figure 4: DC PSU Module (A900-PWR1200-D)

ComponentLabel

T-shaped connector1

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

Power Supply Features

Table 3: DC Power Supply Specifications (A900-PWR1200-D)

A900-PWR1200-DPart numbers

48V, GND, -48VNominal input voltage specification

-40.8 VDC to -72 VDCInput voltage range

+12 VDCOutput voltage

8-10 AWG minimum for -48/-60 VDC.

Connector accepts 8 AWG maximum.

Wire gauge for DC input power connections

1200 W

975W with A902-FAN-E

Maximum power output

AC Power Specifications

The AC PSU models supported on the router are:

•A900-PWR550-A—Provides 550 W power

•A900-PWR1200-D—Provides 1200 W power

The table below summarizes the input power specifications for the Cisco ASR 902 Router AC power supply

units.

Table 4: AC Power Supply Specifications (A900-PWR550-A)

A900-PWR550-APart number

115VAC/ 230VACInput power specification

85/264 VACInput voltage

85 VACMinimum input voltage

264 VACMaximum input voltage

12 VDCMinimum output voltage

12.4 VDCMaximum output voltage

550 WMaximum power output

•A900-PWR1200-A—Provides 975 W output power for system 12 V power with the A902-FAN-E

module. As most of the system configurations using A900-RSP3C-200-S RSP modules require power

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

Power Supply Features

exceeding 550 W, we recommend using the A900-PWR1200-A power supply with A900-RSP3C-200-S

RSP modules. ( see the figure below )

Figure 5: Power Supply (A900-PWR1200-A)

Table 5: AC Power Supply Specifications (A900-PWR1200-A)

A900-PWR1200-APart number

115VAC/ 230VACInput power specification

85/264 VACInput voltage

85 VACMinimum input voltage

264 VACMaximum input voltage

12VMinimum output voltage

12.4VMaximum output voltage

1200 W

975W with A902-FAN-E

Maximum power output

Fan Tray

The fan tray has the following hardware features:

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

Fan Tray

•It provides side-to-side forced air cooling

•It provides redundant fans

•It is field replaceable

•It contains status LEDs

•It contains two alarm ports with two external alarm inputs

The fan tray modules supported on the router are:

•A902-FAN-E ( Figure 1-6 )

For more information about air flow guidelines, see the Air Flow Guidelines section . For instructions on how

to install the fan tray, see the Installing the Fan Tray section. For a summary of the LEDs on the fan tray, see

the LED Summary section .

Fan Tray (A902-FAN-E)

The Cisco ASR 902 Router uses a modular fan tray that is separate from the power supply. The A902-FAN-E

is a fan tray containing eight (40 x 40 x 20 mm) fans and provides sufficient capacity to maintain operations

indefinitely in the event of an individual fan failure. It has a 8-mm fan dust filter that prevents dust from

entering the unit and avoids possible damage to the components. The fan tray is IEC60950-1 compliant.

Figure 6: Cisco ASR 902 Fan Tray with Dust Filter and Dummy Cover (A902-FAN-E)

ComponentLabelComponentLabel

Dummy cover4Label1

Pull tab5Alarm2

Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide

Overview

Fan Tray

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