Cisco ASR 902 Manual
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
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◦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)
4
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
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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
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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
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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
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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
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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
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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
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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
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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
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Overview
Fan Tray
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