Cisco ASR 902, ASR 902U Hardware Installation Manual

Overview

Note

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.

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

1

Cisco ASR 902 Router Features

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

•

One fan tray

◦

Overview

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

4

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

2

Fan tray3

Redundant power units (two DC power units are
shown)

Overview

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

System Specifications

Dimensions (Height x Width x Depth)

Weight

Operating Temperature

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

268.351 mm)

Note

This measurement includes handles from the
power supply, fan tray, and interface
modules installed in the chassis.

24.030 pounds (10.9 kg)

Note

This weight includes a power
supply.

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)

Nonoperating Temperature

Operating Altitude

Nonoperating Vibration

–40 to 185ºF (–40 to +85ºC) storage 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.

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

< 68.5 dBa @ 27ºCOperating Acoustics

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

3

Power Supply Features

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.

Overview

Caution

Dying Gasp

Note

Status LEDs

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

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.

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

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

4

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

5

Power Supply Features

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

Overview

Table 2: DC Power Supply Specifications‘(550 W)

Nominal input voltage specification

Input voltage range

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

6

ComponentLabel

T-shaped connector1

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

+24 VDC/–48 VDC

–19.2 VDC to –72 VDC

Overview

Power Supply Features

+12 VDCOutput voltage

Wire gauge for DC input power connections

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

12 AWG minimum for –48/-60 VDC

8 AWG minimum for 24 VDC

Connector accepts 8 AWG maximum

550 WMaximum power output

ComponentLabel

T-shaped connector1

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

7

Power Supply Features

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

Overview

A900-PWR1200-DPart numbers

48V, GND, -48VNominal input voltage specification

-40.8 VDC to -72 VDCInput voltage range

+12 VDCOutput voltage

Wire gauge for DC input power connections

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)

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

Connector accepts 8 AWG maximum.

1200 W

975W with A902-FAN-E

A900-PWR550-APart number

115VAC/ 230VACInput power specification

• 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

8

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

Overview

Fan Tray

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)

Fan Tray

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

Maximum power output

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

The fan tray has the following hardware features:

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

9

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)

Overview

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)

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

10

ComponentLabelComponentLabel

Dummy cover4Label1

Pull tab5Alarm2

Overview

Air Plenum

ComponentLabelComponentLabel

Dust Filter (A902-FAN-F)

Air Plenum

Note

Dust filter3

The dust filter (as shown in the figure in Fan Tray (A902-FAN-E section) on the fan tray is a quadrafoam
45PPI filter that is 85 percent dust resistant. A dummy cover (A902-FAN-F-B) secures the dust filter in the
chassis. For installing the fan filter, see the Installing the Dust Filter section.

Use the pull tab to easily access the filter.Note

Air plenum or air baffle assembly is used to change the air flow pattern of the unit. When the router is installed
with the plenum, the air flow pattern is changed from side-side to front-back. The front-back air flow pattern
provides a rack installation bay with a cool front zone and a hot rear zone. For information about installing
the plenum, see Installing the Router Chassis in the Air Plenum.

When the air plenum and the fan filter are installed in the chassis, the system’s maximum operating
temperature should be 55 degrees Celsius.

——

RSP Modules

To order an air plenum, contact the Sales and Marketing staff at GAW (www.GawTechnology.net) (see Table

A-2).

The Cisco ASR 902 Router is designed to use a single RSP module to handle the data plane, network timing,
and control plane functionalities for the router. The RSP configuration allows you to use Cisco IOS software
to control chassis management, external management, and system status indications on the router.

RSP features include:

Loading software onto processor-based interface modules

•

Packet processing

•

Traffic management, including buffering, queuing, and scheduling, Ethernet MAC functions.

•

Network clocking functions, including phase and time-of-day for Building Integrated Timing Source

•

(BITS), 1 PPS, 10 MHz, and 1588 Precision Time Protocol (PTP) clock references.

Storage of software images, system configuration, Onboard Failure Logging (OBFL), syslog.

•

PTP packet processing, including IEEE 1588-2008 for recovering network timing (frequency, phase,

•

and time) from upstream PTP clocks for generating PTP frequency and phase references as inputs to

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

11

RSP Modules

Supported RSPs

The Cisco ASR 902 Router supports the following RSPs:

Overview

the Synchronous Equipment Timing Source (SETS), and for distributing them to downstream PTP
clocks.

External management interfaces (RS232 console, management ENET, USB console, USB storage) and

•

system-status LED indicators.

• A900-RSP1A-55—Provides 2-GB of synchronous dynamic random access memory (SDRAM), 5 Mb

of Ternary content-addressable memory (TCAM), 3-Mb buffer table, 576-Mb forwarding memory, and
1,536-Mb packet buffer memory.

• A900-RSP1B-55—Provides 4-GB of SDRAM, 20 Mb of TCAM memory, 144-Mb buffer table, 1152-Mb

forwarding memory, and 1,536-Mb packet buffer memory.

• A900-RSP2A-128—Provides 4-GB double data rate type three (DDR3) memory and 128-Gbps aggregate

throughput.

• A900-RSP2A-64—Provides 4-GB double data rate type three (DDR3) memory and 64-Gbps aggregate

throughput.

• A900-RSP3C-200-S—Provides 8 GB DDR3 memory, 64MB flash memory, 20 Mb of TCAM memory,

8 GB of SDRAM, 200 Gbps throughput, and a USB port for mass storage on the faceplate.

The Cisco ASR 902U Router supports the following RSPs:

• A900U-RSP2A-128—Provides 4-GB double data rate type three (DDR3) memory and 128-Gbps

aggregate throughput.

• A900U-RSP2A-64—Provides 4-GB double data rate type three (DDR3) memory and 64-Gbps aggregate

throughput.

The SD memory card is not field replaceable. Do not try to remove or replace it.Caution

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

12

Overview

RSP Modules

The supported RSPs have different memory capacities, but they have the same interfaces and functionalities.Note

Figure 7: A900-RSP1 Module

Figure 8: A900-RSP2A-128 Module

Figure 9: A900-RSP3C-200-S RSP Module

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

13

RSP Modules

Overview

A900-RSP1-Supported Interface Modules

Table 6: A900-RSP1-Supported Interface Modules and Part Numbers

A900-RSP1A-55

A900-RSP1B-55

SFP Interface Module
(8x1GE)

RJ45 (Copper) Interface
Module (8x1GE)

Ethernet XFP Interface
Module (1x10GE)

Module

(OC-3) or 1-port
OC12/STM-4 (OC-12)
Interface Module

SlotPart NumberInterface ModuleRSP

AllA900-IMA8S8-port Gigabit Ethernet

A900-IMA8T8-port Gigabit Ethernet

A900-IMA1X1-port 10-Gigabit

A900-IMA16D16-port T1/E1 Interface

A900-IMA4OS4-port OC3/STM-1

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

14

A900-IMASER14A/S14-port Serial Interface

Module

Overview

A900-RSP2-Supported Interface Modules

Table 7: A900-RSP2-Supported Interface Modules and Part Numbers

RSP Modules

SlotsPart NumbersInterface ModulesRSP

A900-RSP2A-128

A900U-RSP2A-128

SFP Interface Module
(8x1GE)

RJ45 (Copper) Interface
Module (8x1GE)

Ethernet XFP Interface
Module (1x10GE)

Module

(OC-3) or 1-port
OC12/STM-4 (OC-12)
Interface Module

SFP Combo IM—8-port
Gigabit Ethernet (8x1GE)
+

1-port 10-Gigabit
Ethernet (1x10GE)

AllA900-IMA8S8-port Gigabit Ethernet

A900-IMA8T8-port Gigabit Ethernet

A900-IMA1X1-port 10-Gigabit

A900-IMA16D16-port T1/E1 Interface

A900-IMA4OS4-port OC3/STM-1

A900-IMA8S1Z

A900-IMA8T1ZCopper Combo

IM—8-port Gigabit
Ethernet (8x1GE)

+ 1-port 10-Gigabit
Ethernet Interface Module
(1x10GE)

A900-IMA2Z2-port 10 Gigabit Ethernet
Interface Module
(2x10GE)

A900-IMASER14A/S14-port Serial Interface
Module

A900-IMA4C37944-port C37.94 Interface
Module

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

15

RSP Modules

Overview

SlotsPart NumbersInterface ModulesRSP

A900-RSP2A-64

A900U-RSP2A-64

0-2A900-IMA1X1-port 10 Gigabit Ethernet
XFP Interface Module
(1x10GE)

A900-IMA2Z2-port 10 Gigabit Ethernet
Interface Module
(2x10GE)

A900-IMA4OS4-port OC3/STM-1
(OC-3) or 1-port
OC12/STM-4

(OC-12) Interface Module

0, 2 and 3A900-IMA8S8-port Gigabit Ethernet
SFP Interface Module
(8x1GE)

A900-IMA8T8-port Gigabit Ethernet
RJ45 (Copper) Interface
Module (8x1GE)

A900-IMA16D16-port T1/E1 Interface
Module

Module

Module

Module

Module

Module

A900-IMA32D32-port T1/E1 Interface

A900-IMA8D8-port T1/E1 Interface

A900-IMA6EM6-port E & M Interface

A900-IMASER14A/S14-port Serial Interface

A900-IMA4C37944-port C37.94 Interface

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

16

Overview

A900-RSP3C-200-S Supported Interface Modules

Table 8: A900-RSP3C-200 Supported Interface Modules and Part Numbers

RSP Modules

RSP Module

A900-RSP3C-200-S

Modules

SFP Interface Module
(8x1GE)

RJ45 (Copper) Interface
Module (8x1GE)

XFP Interface Module
(1x10GE)

SFP Combo IM—8-port
Gigabit Ethernet (8x1GE)
+

1-port 10 Gigabit Ethernet
(1x10GE)

IM—8-port Gigabit
Ethernet (8x1GE)

+ 1-port 10 Gigabit
Ethernet Interface Module
(1x10GE)

SlotPart NumbersSupported Interface

1

A900-IMA8S8-port Gigabit Ethernet

All

A900-IMA8T8-port Gigabit Ethernet

0 and 1A900-IMA1X1-port 10 Gigabit Ethernet

AllA900-IMA8S1Z

A900-IMA8T1ZCopper Combo

1

There are restrictions using the interface modules in different slots with RSP3 module. Contact Cisco Sales/Support for the valid combinations..

A900-IMA2Z2-port 10 Gigabit Ethernet
Interface Module
(2x10GE)

0A900-IMA8Z8-port 10 Gigabit Ethernet
Interface Module
(8x10GE)

A900-IMA2F2-port 40 Gigabit Ethernet
QSFP Interface Module
(2x40GE)

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

17

RSP Modules

Supported RSP Features

The following are the RSP features supported on the Cisco ASR 902 Router:

Centralized data plane, timing, and control plane functions for the system

•

High-level control of interface modules

•

Management functionalities for the router

•

Control plane (host) CPU and associated memory in which Cisco IOS-XE and platform-control software

•

run

Nonvolatile memory for storage of software images, configurations, and system files

•

Enabling and monitoring the health and presence of fan trays, interface modules, and power supplies

•

Field replacement

•

Network Timing Interfaces

Overview

The RSP supports the following network timing interfaces:

RSP Interfaces

The figure below summarizes the interfaces on an RSP module.

Figure 10: RSP Interfaces Summary

• BITS input/output port—RJ48 jack

• 1 PPS input and output—Mini coax connectors

• 2.048 or 10 MHz input and output—Mini coax connectors

• Time of Day (ToD) —Shielded RJ45 jack

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

18

InterfaceLabel

USB memory port1

USB console port2

Overview

RSP Modules

InterfaceLabel

Console port3

1-PPS input timing port4

1-PPS output timing port5

10-MHz input timing port6

10-MHz output timing port7

ToD timing port8

BITS timing port9

Ethernet management port10

The A900-RSP2A has the following front panel interfaces. For information on cable pinouts, see Pinouts.

Figure 11: Cisco A900-RSP2A Interface Summary

1 USB Type-A Connector for USB flash (Label = MEM)

•

1 USB Type-A Connector for alternate console port (Label = CONSOLE)

•

RJ45 Connector for Con/Aux (Label = CONSOLE)

•

RJ48 Jack for BITS interface (Label = BITS)

•

RJ48 Jack for Time-of-Day interface (Label= TOD)

•

RJ45 Connector for Con/Aux (Label = MGMT ENET)

•

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

19

GNSS Module (A900-CM-GNSS)

4 Mini-Coax Connectors (Label = 1PPS IN, 1PPS OUT, 10MHZ IN, 10MHZ OUT)

•

Figure 12: Cisco A900-RSP3C-200-S Interfaces

Overview

InterfaceLabel

GNSS module slot (optional)1

USB memory port2

For more information about installing an RSP, see the RSP Installation section. For more information about
RSP LEDs, see the RSP LEDs section.

GNSS Module (A900-CM-GNSS)

USB console port3

Console port4

1-PPS input timing port5

1-PPS output timing port6

10-MHz input timing port7

10-MHz output timing port8

ToD timing port9

BITS timing port10

Ethernet management port11

The GNSS module is present on the RSP3 modules. It is a pluggable module that allows direct interface with
the external antenna.

To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord. Statement 1023Danger

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

20

Overview

The GNSS module is not hot swappable.Note

GNSS Module RF Input Requirements

The GNSS module requires an active GPS/GNSS antenna with built-in Low-Noise Amplifier (LNA)

•

for optimal performance. The antenna LNA amplifies the received satellite signals for two purposes:

Compensation of losses on the cable

◦

Lifting the signal amplitude in the suitable range for the receiver frontend

◦

The Amplification required is 22dB gain + cable/connector loss + Splitter signal loss.

The recommended range of LNA gain (LNA gain minus all cable and connector losses) at the connector
of the receiver module is 22dB to 30dB with a minimum of 20dB and a maximum of 35dB.

GNSS module provides 5V to the active antenna through the same RF input.

•

GNSS Module (A900-CM-GNSS)

Surge requirement:

•

GNSS modules have built-in ESD protections on all pins, including the RF-input pin. However,

•

additional surge protection may be required if rooftop antennas are being connected, to meet the
regulations and standards for lightning protection in the countries where the end-product is installed.

A lightning protection must be mounted at the place where the antenna cable enters the building.

•

The primary lightning protection must be capable of conducting all potentially dangerous electrical
energy to PE (Protective Earth).

Surge arrestors should support DC-pass and suitable for the GPS frequency range (1.575GHz)

•

with low attenuation.

Antenna Sky visibility:

•

GPS signals can only be received on a direct line of sight between antenna and satellite. The antenna

◦

should see as much as possible from the total sky. For proper timing, minimum of four satellites
should be locked.

Note

The antenna terminal should be earthed at the building entrance in accordance with the
ANSI/NFPA 70, the National Electrical Code (NEC), in particular Section 820.93,
Grounding of Outer Conductive Shield of a Coaxial Cable.

Use a passive splitter if more than one GNSS modules are fed from a single antenna.

•

Note

The splitter should have all the RF ports capable of DC-pass, if the antenna needs to feed power from
GNSS module.

For information on pinout, see GPS Port Pinouts .

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

21

Interface Modules

Interface Modules

The Cisco ASR 902 Router interface modules are field-replaceable units.

Overview

Note

On RSP-1, Slot 2 Port 0 cannot be used for traffic flow on 8X1-G copper and 8X1-G SFP interface modules.
To identify Slot 2 on a Cisco ASR 902 Router, see the figure in the Interface Numbering, on page 36
section.

In addition to the ports provided on an RSP, the Cisco ASR 902 Router supports the following interface
modules:

Gigabit Ethernet SFP Interface Module

The Gigabit Ethernet Small Form-Factor Pluggable (SFP) interface module provides eight Gigabit Ethernet
SFP modules. The figure below shows the 8-port 1Gigabit Ethernet SFP interface module.

Figure 13: 8 x 1-Gigabit Ethernet SFP Interface Module

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing an SFP Gigabit Ethernet module, see the Interface Module Installation.

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

22

Overview

Gigabit Ethernet RJ45 Interface Module

The Gigabit Ethernet RJ45 interface module provides eight Gigabit Ethernet copper ports. The figure below
shows the interface module.

Figure 14: 8 x 1-Gigabit Ethernet RJ45 (Copper) Interface Module

Interface Modules

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing an RJ45 Gigabit Ethernet module, see the Interface Module Installation.

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

23

Interface Modules

1-Port 10-Gigabit Ethernet XFP Interface Module

The 10-Gigabit Ethernet XFP interface module provides a single port supporting a 10-Gigabit Ethernet XFP
module. The figure below shows the interface module.

Figure 15: 1 x 10-Gigabit Ethernet XFP Interface Module

Overview

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing a 10-Gigabit Ethernet XFP module, see the Interface Module Installation.

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

24

Overview

16-Port T1/E1 Interface Module

The 16-port T1/E1 interface module provides connectivity for up to 16 T1/E1 ports through a 100-pin Amplimite
connector. The T1/E1 interface module requires the use of a patch panel to provide RJ48 (T1) or BNC (E1)
connectors. The figure below shows the interface module.

Figure 16: 16 x T1/E1 Interface Module

Interface Modules

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing a T1/E1 interface module, see theInterface Module Installation.

4-port OC3/STM-1 (OC-3) or 1-port OC12/STM-4 (OC-12) Interface Module

The 4-port OC3/STM-1 (OC-3) or 1-port OC12/STM-4 (OC-12) interface module can operate as up to four
STM-1 interfaces.

Note

The optical interface module is designed for both OC-3 and OC-12 traffic. OC-12 is only supported on
the RSP1 module on the router.

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

25

Interface Modules

Overview

The figure below shows the 4-port OC-3 interface module.

Figure 17: 4-port OC-3 Interface Module

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing an optical interface module, see the Interface Module Installation.

For more information about using the LEDs to troubleshoot the Cisco ASR 902 Router, see Troubleshooting.

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

26

Overview

Interface Modules

8x1 Gigabit Ethernet SFP + 1x10 Gigabit Ethernet SFP+ Combination Interface Module

The 8-port 1 Gigabit Ethernet SFP interface module with the 1-port 10 Gigabit Ethernet interface module is
a high-density combination interface module. This module supports eight 1-Gigabit Ethernet SFP ports and
one 10-Gigabit Ethernet SFP+ port.

Figure 18: 8x1 GE SFP + 1x10 GE SFP+ Interface Module

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing the 8X1 GE SFP + 1X10 SFP Gigabit Ethernet module, see the Interface

Module Installation.

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

27

Overview

Interface Modules

8x1 Gigabit Ethernet RJ45 + 1x10 Gigabit Ethernet SFP+ Combination Interface Module

This 8-port 1 Gigabit Ethernet RJ45 (Copper) interface module with the 1-port 10 Gigabit Ethernet interface
module is a high-density combination interface module. This module supports eight 1 Gigabit Ethernet Copper
ports and one 10 Gigabit Ethernet SFP+ port.

Figure 19: 8x1 GE RJ45 + 1x10 GE SFP+ Interface Module

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing the 8X1 GE RJ45 + 1X10 SFP Gigabit Ethernet module, see the Interface

Module Installation.

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

28

Overview

8-Port 10 Gigabit Ethernet Interface Module (8x10GE)

Figure 20: 8x10 Gigabit Ethernet Interface Module

Interface Modules

The high density 8x10 Gigabit Ethernet interface module supports eight 10 Gigabit Ethernet ports using SFP+
transceivers cages on the faceplate.

It does not support XFP transceivers on the ports.Note

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing a 8X10GE module, see the Interface Module Installation.

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

29

Interface Modules

2-Port 10 Gigabit Ethernet SFP+ Interface Module (2x10 GE)

The 2-port 10 Gigabit Ethernet interface module provides a dual port supporting a 10 Gigabit Ethernet SFP+
and XFP module.

Figure 21: 2-port 10 Gigabit Ethernet Interface Module

Overview

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing the 2X10 GE SFP Gigabit Ethernet module, see the Interface Module

Installation.

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

30

Overview

2-Port 40 Gigabit Ethernet QSFP Interface Module (2x40 GE)

The dual port 40 Gigabit Ethernet interface module supports the 40 Gigabit Ethernet port. The 40G interface
is supported using QSFP+ optics. The figure below shows the interface module.

Figure 22: 2x40 Gigabit Ethernet Interface Module

Interface Modules

For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data

Sheet.

For more information about installing a 2X40GE module, see the Interface Module Installation.

14-Port Serial Interface Module

The Cisco (A900-IMASER14A/S) is a 14-port serial interface module for the router. The Cisco ASR 902
Router module has the following interfaces:

• 12-in-1 Connector (6)—Supports synchronous and asynchronous RS-232 interfaces using EIA/TIA-232

DB-25 connectors.

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

31

Interface Modules

Overview

• 68-Pin Connector (2)—Supports up to 8 RS-232 interfaces in full or half duplex mode using 4 RS-232

connectors (DB-25, DB-9, or RJ-45).

Figure 23: 14-Port Serial Interface Module

Supported Standards

The 14-port serial interface module supports the following standards:

Table 9: General Standard

IEEE 1613 2009

68-Pin Connector (2)2Captive screws (2)1

Status (STAT) LED412-in-1 Connector (6)3

6Power (PWR) LED5

LEDs—The LEDs are as follows:

• J0–J3 and J4–J7—Indicate the function

of the 68-pin connectors

• J8–J13—Indicate the status of the

12-in-1 connectors

DefinitionStandard

IEEE Standard for Environmental and Testing
Requirements for Communications Networking
Devices in Electric Power Substations

IEC 61850-3

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

32

IEC standard specifying general requirements for
substation automation systems (SAS) communications
and related system requirements.

IEC standard for substation environmental conditionsIEC 60870-2-1:1995

Overview

Interface Modules

DefinitionStandard

IEC standard for substation environmental conditionsIEC 60870-2-2:1996

IEC 61000-6-5:2001

For more information about installing the module, see the Interface Module Installation.

For information on LEDs, see 14-Port Serial Interface Module LEDs.

For information on cables and pinouts see, Connecting Serial Cables and Serial Interface Modules Pinouts.

6-Port E and M Interface Module

The Cisco A900-IMA6EM is a 6-port Ear and Mouth (E&M) interface module. The interface module provides
the router with connectivity to tele-protection equipments. The front panel of the module consists of:

six port RJ45 connectors

•

two LED that display Power and Status

•

one LED per RJ45 port

•

Figure 24: E and M Interface Module

IEC standard defining immunity for power station

and substation environments

For more information about installing the module, see the Interface Module Installation section.

4-Port C37.94 Interface Module

The Cisco (A900-IMA4C3794) is a 4-port interface module that provides IEEE C37.94-2002 compliant Nx64
kbps optical interface ports to the router. The interfaces support 50/62.5 multimode fiber at 850 nm. The
physical interfaces use 2.5 mm ST connectors.

The front panel of the module consists of:

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

33

Blank Deflector (A900-IMA-BLNK-DEF)

four ports of IEEE C37.94 interfaces

•

Figure 25: C37.94 Interface Module

Overview

Figure 26: C37.94 Interface Module Front Panel

For more information about installing the module, see the Interface Module Installation section .

Blank Deflector (A900-IMA-BLNK-DEF)

The A900-IMA-BLNK-DEF is a special type of blank filler plate that can be used in empty interface module
slots. In addition to just acting as a filler for the empty slots in the router, this blank deflects additional air
towards the interface modules in the slot below it, thereby enhancing the cooling for the interface module.

The A900-IMA-BLNK-DEF module should not be used in slot 0 in the Cisco ASR 902 Router.Caution

For slot 0, always use the filler blank (A900-IMA-BLANK) when a blank filler needs to be used.

For more information on operating temperature, see Maximum Operating Ambient Temperature Support for

RSP3 Modules .

Maximum Operating Ambient Temperature Support for RSP3 Modules

The router supports multiple fan trays with different cooling capacities. The maximum operating temperature
of the router using the RSP3 modules, depends on the fan tray and the interface modules used in the router.

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

34

Overview

Temperature Sensor

The table below provides an overview of the operating ambient temperature limits for different interface
modules with A900-RSP3C-200-S in the router.

The temperature range could be further restricted by the optical modules used in the router.Note

Table 10: Operating Temperature for A900-RSP3C-200-S Module

Operating Temperature Limit (°C)Fan TrayInterface Modules

A900-IMA8T

A900-IMA8S

A900-IMA2Z

A900-IMA8T1Z

A900-IMA8S1

A900-IMA8Z

A900-IMA2F

Temperature Sensor

The Cisco ASR 902 Router has a temperature sensor to detect overtemperature conditions inside the chassis.
The overtemperature detection trips at 75°C +/– 5% with the ambient (inlet) trip point at 67°C. This condition
is reported to the processor as an interrupt, and the software takes action to generate the appropriate alarms.

Temperature Sensors on the A900 RSP3 modules

A902-FAN-EA900-IMA1X

–40 to 65

–40 to 50

–40 to 45

The maximum operating temperature of the RSP3 module and the interface modules is less than the maximum
operating temperature of the router. The IOS software decides the appropriate temperature thresholds to
generate warnings, and shuts down the system when abnormally high temperature is detected.

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

35

Serial Number Label Location

Serial Number Label Location

The figure below shows the serial number label location on the Cisco ASR 902 Router.

Figure 27: Cisco ASR 902 Router Serial Number Location

Overview

Interface Numbering

The Cisco ASR 902 Router chassis includes:

Four interface module slots

•

One RSP module slot

•

Two power supply slots

•

One fan tray slot

•

Each network interface on a Cisco ASR 902 Router is identified by a slot number and a port number.

The figure below shows interface numbering on a Cisco ASR 902 Router.

Figure 28: Cisco ASR 902 Router Slot Numbers

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

36

Overview

Regulatory Compliance

Slot IdentificationLabel

RSP slot1

Fan tray slot2

Power supply slot 13

Power supply slot 04

Interface module slot 05

Interface module slot 16

Interface module slot 27

Interface module slot 38

The following is an explanation of the interface module slot and port numbering:

The numbering format is interface type slot or interface (port) number. Interface (port) numbers begin

•

at logical 0 for each interface type.

Interface module slots are numbered from bottom to top, with logical interfaces on each module numbered

•

from left to right. Interfaces are hardwired. Therefore, port 0 is always logical interface 0/0, port 1 is
always logical interface 0/1, and so on.

Regulatory Compliance

For regulatory compliance and safety information, see the Product Documentation and Compliance for the
Cisco ASR 900 Series Aggregation Services Routers document.

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

37

Regulatory Compliance

Overview

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

38