Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
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This chapter describes how to install the Cisco ASR 902 Router.
Prerequisites
Before installing the
Cisco ASR 902 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).
Unpacking and inspecting the
Cisco ASR 902 Router.
Gathering the tools and test
equipment required to properly install the Cisco ASR 902 Router.
For more instructions
on how to prepare for the installation of the Cisco ASR 902 Router, see
Preparing for Installation.
Installing the Router in a Rack
The following sections describe how to install the Cisco ASR 902 Router in a rack. The procedures in this section apply to
both horizontal and vertical mounting of the router in a rack:
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:
Procedure
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 on the Cisco ASR 902 Router for a
19-inch EIA rack.
The figure
below shows how to attach the brackets on the Cisco ASR 902 Router for a 300-mm
ETSI cabinet.
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 28 in.-lb (3.16 N-m).
Step 4
Repeat Step 2
and Step 3 for the other bracket.
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.
Note
Install the
cable guides before installing the router in a 19-inch EIA rack.
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.
Caution
Do not use
interface module or power supply ejector handles to lift the chassis; using
these handles to lift the chassis can deform or damage the handles.
The figure
below shows how to install the Cisco ASR 902 Router in a 19-inch EIA rack.
The figure
below shows how to install the Cisco ASR 902 Router in a 300-mm ETSI Cabinet.
Step 3
Install the 8
or 12 (4 or 6 per side) 12-24 x 3/4-inch or 10-32 x 3/4-inch 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 the
Router Chassis in the Air Plenum
Note
Ensure that the
router is not installed in the Air Plenum while mounting it on the rack.
Position the
chassis so that the rear of the chassis is at the front of the plenum. See the
figure below .
Step 2
Slide the
chassis into the plenum so that the front of the chassis is in flush with the
mounting rails and brackets.
1
Cisco
ASR 902 router
2
Air
plenum
Attaching the Cable
Guides
The Cisco ASR 902
Router supports the following cable guides:
A902-CABLE
GUIDE-LEFT—This guide helps in routing the cables from the interface modules,
thereby enabling a proper cable-bending radius. (See the figure below.)
A902-CABLE
GUIDE-RIGHT—This guide helps in routing the cables from the power supplies and
the RSP module, thereby enabling a proper cable-bending radius. (See the figure
below.)
Note
If the chassis is
mounted using 19-inch brackets, you must assemble the cable guides before
installing the chassis on the rack.
Note
The cable guides
should be assembled together. We recommend that the cable guides be installed
before the chassis is installed in the air plenum.
To install a cable
guide, perform these steps:
Procedure
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 figure below.
Label
Component
1
Cable
guide-left
2
Cable
guide-right
Step 2
Secure the cable
guides with the four M3.5 screws supplied with the cable kit. The recommended
maximum torque is 10 in.-lb (1.12 N-m).
Installing the
Chassis Ground Connection
Before you connect
the power or turn on the power to the Cisco ASR 902 Router, you must provide an
adequate chassis ground (earth) connection to your router.
This section
describes how to ground the Cisco ASR 902 Router chassis. The router provides
two locations for attaching a 2-hole grounding lug according to the
rack-mounting brackets you use to install the router. The Cisco ASR 902 Router
supports the following rack-mounting types:
EIA 19-inch rack—Attach the
grounding lug to the rear of the router, as shown in the figure below .
1
Grounding-lug (19-inch EIA rack)
300-mm ETSI cabinet—Attach
the grounding lug on the rack-mount bracket on the front of the router, as
shown in the figure below .
1
Grounding
lug (300 mm ETSI cabinet)
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
pressure 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 Cisco ASR 902 Router, ensure that you disconnect the power
at the circuit breaker. Otherwise, severe injury to you or damage to the router
may occur.
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
or replacing the unit, the ground connection must always be made first and
disconnected last. Statement 1046
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 Cisco ASR 902 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) ( the figure below ).
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 figure below.
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. For a 19-inch EIA rack, attach
the 2-hole ground lug to the rear of the router.
Step 5
Connect the
other end of the ground wire to a suitable grounding point at your site.
Installing the Fan
Tray
The fan tray is a
modular unit that provides cooling to the Cisco ASR 902 Router. Follow these
steps to install the fan tray in the chassis:
Procedure
Step 1
Orient the fan
tray so that the captive screws are on the left side of the fan tray’s front
panel. The figure below shows how to orient the fan tray.
Step 2
Guide the fan
tray into the chassis until it is fully seated.
Caution
The fans are
exposed on the left side of the fan tray. Keep your fingers, clothing, and
jewelry away from the fans. Always handle the fan tray by the handle.
Note
When
installing the cabling to the RSP, we recommend that you leave a service loop
of extra cabling sufficient to allow for fan tray removal.
Step 3
Secure the fan
tray to the chassis using the attached captive installation screws. The
recommended maximum torque is 5.5 in.-lb (.62 N-m).
This completes
the procedure for installing or replacing the fan tray in a Cisco ASR 902
Router.
For information about connecting cables to the fan tray alarm port, see the Connecting the Fan Tray Alarm Port section in the Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide. For a summary of the LEDs on the fan tray, see the LED Summary section in the Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide. For more information about air flow guidelines, see the Air Flow Guidelinessection in the Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide.
The dust filter must be removed for a replacement.
Note
The dust filter is a single-use component.
Dust Filter
Maintenance
A periodic health
check of the filter, every three months based on the level of dust in the
environment, helps in avoiding over clogging of the filters and provide a
better life. This product's filter is used as a single-use component. If the
product is installed in a controlled environment, check and replace the filter
every three months, otherwise replace the filter every month.
Procedure
Step 1
Remove the
dummy cover from the fan tray.
Step 2
Remove the dust
filter from the fan.
Note
The filter
can be accessed by pulling the pull tab by using fingers or pliers.
Step 3
Slide the
replacement dust filter onto the fan tray
Step 4
Insert the
dummy cover onto the fan tray to secure the filter within the chassis.
Removing and
Replacing the Fan Tray
The fan tray
supports online insertion and removal (OIR). There is no need to power down the
Cisco ASR 902 Router to remove or replace the fan tray. However, there is a
finite time to replace the fan tray. This time depends upon the specific RSP
module used and the ambient temperature. The following table provides the time
interval for replacing the fan tray. At higher ambient temperatures, the
replacement time is lower.
Table 1. Fan Replacement
Time
RSP Module
Replacement
Time at 25°C Ambient
RSP2
5 minutes
RSP3
2 minutes
Caution
To avoid erroneous
failure messages, allow at least 2 minutes for the system to reinitialize after
the fan tray has been removed or replaced.
Follow these steps
to remove and replace the fan tray on the Cisco ASR 902 Router:
Procedure
Step 1
Using a No. 2
Phillips screwdriver or your fingers, loosen the captive installation screw
that secures the fan tray to the chassis. The figure below shows the front of
the fan tray, including the captive installation screws.
Label
Component
1
Captive installation screw
2
Handle
Step 2
Grasp the fan
tray handle with one hand and the outside of the chassis with the other hand.
the figure below shows the front of the fan tray, including the handle.
Caution
The fans are exposed on the left side of the fan tray. Keep
your fingers, clothing, and jewelry away from the fans. Always handle the fan
tray by the handle.
Step 3
Pull the fan
tray backward towards you, no more than 1 inch, to disengage it from the power
receptacle on the midplane, as shown in the figure below.
Warning
The fans might
still be turning when you remove the fan assembly from the chassis. Keep
fingers, screwdrivers, and other objects away from the openings in the fan
assembly’s housing. Statement 263
Step 4
Wait at least 5
seconds to allow the fans to stop spinning. Then, pull the fan tray backward
towards you and out of the chassis..
Note
As the fan
tray slides out of the chassis, support the bottom of the fan tray with one
hand and keep your other hand on the fan tray handle.
This completes
the steps for removing the fan tray from the chassis.
Follow these steps pertaining to handling an RSP module in the Cisco ASR 902 Router:
Installing an RSP
Module
To install an RSP
module in the router chassis, perform the following steps:
Procedure
Step 1
Make sure that
there is enough clearance to accommodate any equipment that will be connected
to the ports on the module. If a blank module filler plate is installed in the
slot in which you plan to install the module, remove the plate by removing its
2 Phillips pan-head screws.
Step 2
Fully open both
the ejector levers on the new module, as shown in the figure below .
Caution
To prevent
ESD damage, handle modules by carrier edges only.
Step 3
Position the
module in the slot. Make sure that you align the sides of the module with the
guides on each side of the slot, as shown in the figure below .
Step 4
Carefully slide
the module into the slot until the EMI gasket on the module makes contact with
the module in the adjacent slot and both the ejector levers have closed to
approximately 45 degrees with respect to the module faceplate.
Step 5
While pressing
down, simultaneously close both the ejector levers to fully seat the module in
the backplane connector. The ejector levers are fully closed when they are
flush with the module faceplate.
Step 6
Tighten the two
captive installation screws on the module. The recommended maximum torque is
5.5 in.-lb (.62 N-m).
Note
Make sure
that the ejector levers are fully closed before tightening the captive
installation screws.
Step 7
Verify that the
captive installation screws are tightened on all of the modules installed in
the chassis. This step ensures that the EMI gaskets on all the modules are
fully compressed in order to maximize the opening space for the new or
replacement module.
Note
If the
captive installation screws are loose, the EMI gaskets on the installed modules
will push adjacent modules towards the open slot, which reduces the size of the
opening and makes it difficult to install the new module.
Note
When
installing the cabling to an RSP, we recommend that you leave a service loop of
extra cabling sufficient to allow for fan tray removal.
Note
Close all unused RJ-45 and USB ports on the RSP module using the appropriate dust caps to prevent dust from accumulating
inside the cage. For information on dust caps, see the Installing the Dust Caps section.
Removing an RSP
Module
Before you remove
an RSP module from the router, you should save the current configuration using
the
write{hostfile|network|terminal} command. This saves you time when
bringing the module back online.
If the module is
running Cisco IOS software, save the current running configuration by entering
the
copyrunning-configstartup-config command.
Warning
Hazardous voltage
or energy is present on the backplane when the system is operating. Use caution
when servicing. Statement 1034
Warning
Invisible laser
radiation may be emitted from disconnected fibers or connectors. Do not stare
into beams or view directly with optical instruments. Statement 1051
To remove an RSP
module, perform the following steps:
Procedure
Step 1
Disconnect any
cables attached to the ports on the module.
Step 2
Verify that the
captive installation screws on all the modules in the chassis are tight. This
step ensures that the space created by the removed module is maintained.
Note
If the
captive installation screws are loose, the EMI gaskets on the installed modules
will push the modules towards the open slot, which in turn reduces the size of
the opening and makes it difficult to remove the module.
Step 3
Loosen the two
captive installation screws on the module you plan to remove from the chassis.
Step 4
Place your
thumbs on the ejector levers ( the figure below ) and simultaneously rotate the
ejector levers outward to unseat the module from the backplane connector.
Step 5
Grasp the front
edge of the module and slide the module straight out of the slot. If the
chassis has horizontal slots, place your hand under the module to support its
weight as you slide it out from the slot. Do not touch the module circuitry.
Caution
To prevent
ESD damage, handle modules by the carrier edges only.
Step 6
Place the
module on an antistatic mat or antistatic foam.
Interface Module Installation
The following sections describe the various tasks associated with interface module installation on the Cisco ASR 902 Router:
Installing an
Interface Module
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 the Cisco ASR 902 Router, see the figure shown
in the
Interface Numbering
section.
Procedure
Step 1
Before
inserting an interface module, make sure that the chassis is grounded.
Step 2
To insert the
interface module, carefully align the edges of the interface module between the
upper and lower edges of the router slot.
Step 3
Carefully slide
the interface module into the router slot until the interface module makes
contact with the backplane. The figure below shows how to install the interface
module.
Step 4
Tighten the
locking thumbscrews on both sides of the interface module. The recommended
maximum torque is 5.5 in.-lb (.62 N-m).
Step 5
Connect all the
cables to each interface module.
Caution
Do not use
interface module or power supply ejector handles to lift the chassis; using
these handles to lift the chassis can deform or damage the handles.
Note
Close all
unused SFP ports using SFP dust caps to prevent dust from accumulating inside
the cage. The dust caps (Cisco part number A900-DCAP-SFP-S= (24 caps per
package) or Cisco part number A900-DCAP-SFP-L= (240 caps per package)) can be
ordered from Cisco. For information on dust caps, see
Installing
Dust Caps.
Note
Close all
unused RJ-45, SFP, XFP, and QSFP ports on the interface module using the
appropriate dust caps to prevent dust from accumulating inside the cage. For
information on dust caps, see
Installing
Dust Caps.
Removing an
Interface Module
Procedure
Step 1
To remove an
interface module, disconnect all the cables from each interface module.
Step 2
Loosen the
locking thumbscrews on both sides of the interface module.
Step 3
Slide the
interface module out of the router slot by pulling on the handles. If you are
removing a blank filler plate, pull the blank filler plate completely out of
the router slot using the captive screws.
Hot-Swapping an Interface Module
The Cisco ASR 902 Router provides a feature that allows you to remove
and replace an interface module without powering down the router. This feature,
called hot-swapping or Online Insertion and Removal (OIR), allows you to remove
and replace a redundant module without disrupting router operation.
Note
The Cisco ASR 902 Router does not support hot-swapping an interface
module with another module of a different type. For example, you cannot swap an
SFP Gigabit Ethernet module with a copper Gigabit Ethernet module without
disrupting router operation.
Note
If you perform OIR on an interface module and move the module to a
different slot, the router does not retain the module configuration; you must
reconfigure the interface module.
When you remove or insert a redundant module while the router is
powered on and running, the router does the following:
Determines if there is
sufficient power for the module.
Scans the backplane for
configuration changes.
Initializes the newly inserted module. In addition, the system notes
any removed modules and places those modules in the administratively shutdown
state.
Places any previously configured interfaces on the module back to
the state they were in when they were removed.
The router runs diagnostic tests on any new interfaces and the test
results indicate the following:
If the tests are successful it means the router is operating
normally.
If the new module is faulty, the router resumes normal operation,
but leaves the new interfaces disabled.
If the diagnostic tests fail, the router stops operating, which
usually indicates that the new module has a problem in the bus and should be
removed.
Caution
To avoid erroneous failure messages, note the current configuration
of all the interfaces before you remove or replace an interface module, and
allow at least 2 minutes for the system to reinitialize after a module has been
removed or replaced. This time is recommended in order to allow for
synchronization between components within the interface module and for
synchronization with the RSP.
Installing the Power Supply
The Cisco ASR 902 Router provides the choice of two different power
supplies:
DC power
550 W Power Supply—19.2VDC to -72VDC
The DC power supply uses 3 position terminal block-style connector with
positive latching/securing and labeled connections for +24/48V, GRD, -24/48V.
The terminal block connector is of suitable size to carry the appropriate AWG
wire size to handle the input current of the power supply. No ON/OFF switch is
provided.
1200 W Power Supply—40.8VDC to -72VDC
The power supplies are hot-swappable. They are enclosed to prevent
exposure to high voltages, and therefore, no power cable interlock is required.
However the power supplies are automatically shut down when removed from the
chassis. The power supplies are rated to deliver 975 W (~81 A) to the other
FRUs in the system, and are rated for operation at 5ºC above the chassis
operating temperature
AC power
550 W Power Supply—85VAC to 264VAC
1200 W Power Supply—85VAC to 264VAC
The power supplies are hot-swappable. They are enclosed to prevent
exposure to high voltages, and therefore, no power cable interlock is required.
However the power supplies are automatically shut down when removed from the
chassis. The power supplies are rated to deliver 975 W (~81 A) to the other
FRUs in the system, and are rated for operation at 5ºC above the chassis
operating temperature.
The AC power supply has an IEC 320-type power receptacle and a 15 Amp
service connector. You can use standard right angle power cords with the AC
power supply. The power supply includes a power cord retainer. No ON/OFF switch
is provided.
LEDs are also provided on each power supply to indicate the status of
the input power and the health of the power supply. Each power supply also
includes a board ID EEPROM which is accessible by the active RSP.
Each power supply provides a single primary input power connection. You
can install dual-power supplies for redundancy.
DANGER
Read the installation instructions before connecting the system to
the power source. Statement 1004
Note
Products that have an AC power connection are required to have an
external surge protective device (SPD) provided as part of the building
installation to comply with the Telcordia GR-1089 NEBS standard for
electromagnetic compatibility and safety.
Caution
Do not use power supplies of different capacities together in the
router for prolonged durations.
Caution
Do not use interface module or power supply ejector handles to lift
the chassis; using these handles to lift the chassis can deform or damage the
handles.
Preventing Power
Loss
Use the following
guidelines to prevent power loss to the router:
To prevent loss of input
power, ensure that the total maximum load on each circuit supplying the power
supplies is within the current ratings of the wiring and breakers.
In some systems, you can use
an UPS to protect against power failures at your site. Avoid UPS types that use
ferroresonant technology. These UPS types can become unstable with systems such
as the Cisco ASR 902 Router, which can have substantial current-draw
fluctuations due to bursty data traffic patterns.
Use the information
in the
DC Power Specifications to estimate the
power requirements and heat dissipation of a Cisco ASR 902 Router based on a
given configuration of the router. Determining power requirements is useful for
planning the power distribution system needed to support the router.
Power Connection Guidelines
This section provides guidelines for connecting the Cisco ASR 902
Router power supplies to the site power source.
Warning
This equipment is intended to be grounded to comply with emission and
immunity requirements. Ensure that the switch functional ground lug is
connected to earth ground during normal use. Statement 1064
Warning
The plug-socket combination must be accessible at all times because
it serves as the main disconnecting device. Statement 1019
Warning
This product requires short-circuit (overcurrent) protection, to be
provided as part of the building installation. Install only in accordance with
national and local wiring regulations. Statement 1045
Guidelines for DC-Powered Systems
Basic guidelines for DC-powered systems include the following:
Each chassis power supply
should have its own dedicated input power source. The source must comply with
the safety extra-low voltage (SELV) requirements in the UL 60950, CSA 60950, EN
60950, and IEC 60950 standards.
The circuit must be
protected by a dedicated two-pole circuit breaker. The circuit breaker should
be sized according to the power supply input rating and local or national code
requirements.
The circuit breaker is considered the disconnect device and should
be easily accessible.
The system ground is the power supply and chassis ground.
Do not connect the DC return wire to the system frame or to the
system-grounding equipment.
Use the grounding lug to attach a wrist strap for ESD protection
during servicing.
Guidelines for AC-Powered Systems
Basic guidelines for AC-powered systems include the following:
Each chassis power supply
should have its own dedicated branch circuit.
The circuit breaker should
be sized according to the power supply input rating and local or national code
requirements.
The AC power receptacles used to plug in the chassis must be the
grounding type. The grounding conductors that connect to the receptacles should
connect to protective earth ground at the service equipment.
Installing a DC Power Supply
Note
This equipment is suitable for installation in Network Telecommunications Facilities and locations where the NEC applies.
The equipment is suitable for installation as part of the Common Bonding Network (CBN).
Caution
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. Minimal steady state DC operating voltage is 19.2 VDC.
Installing a DC
Power Supply Module
Perform the
following procedure to install a power supply module:
Procedure
Step 1
Ensure that the
system (earth) ground connection has been made. For ground connection
installation instructions, see the
Installing
the Chassis Ground Connection.
Step 2
If present,
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,
as shown in the figure below . 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 (.62 N-m).
If you are
installing a redundant DC power supply, repeat these steps for the second power
source too.
Installing DC Power
Supply Unit (A900-PWR550-D)
Perform the
following procedure to install the terminal block.
Procedure
Step 1
Locate the
terminal block plug.
Step 2
Use a
wire-stripping tool to strip the ends of each of the two wires coming from the
DC-input power source to 0.27 inch (6.6 mm) ± 0.02 inch (0.5 mm) and the wire
for grounding. Do not strip more than 0.29 inch (7.4 mm) of insulation from the
wire. Stripping more than the recommended amount of wire can leave behind
exposed wire from the terminal block plug after installation.
Step 3
Identify the
ground, positive, and negative feed positions pertaining to the terminal block
connection. The recommended wiring sequence is (the figure below):
Ground lead
wire (left)
Negative (-)
lead wire (middle)
Positive (+)
lead wire (right)
Label
Component
Label
Component
1
Ground
lead wire
3
Positive (+) lead wire
2
Negative (–) lead wire
—
—
Step 4
Insert the
exposed wire of one of the three DC-input power source wires into the terminal
block plug. Make sure that you cannot see any wire lead. Only wires with
insulation should extend from the terminal block.
Caution
Do not
overtorque the plug-captive screws of the terminal block. The recommended
maximum torque is from 4.425 in.-lb (.5 N-m) to 5.310 in-lb (.6 N-m).
Step 5
Use a
ratcheting torque screwdriver to torque the terminal block plug captive screw
(above the installed wire lead) from 4.425 in.-lb (.5 N-m) to 5.310 in-lb (.6
N-m), as shown in the figure below.
Step 6
Repeat Step 4
through Step 5 for the remaining DC input power source wire and the ground
wire. the figure below. shows that wiring is completed for a terminal block
plug.
Caution
Secure the
wires coming in from the terminal block plug so that they cannot be disturbed
by casual contact.
Step 7
Ensure that the
terminal block plug is fully seated in the terminal block header on the DC
power supply panel. The plug has a locking feature. You should hear a snap or
click when it is installed properly.
Step 8
Use a tie wrap
to secure the wires to the rack, so that the wires are not pulled from the
terminal block plug by casual contact. Make sure the tie wrap allows for some
slack in the ground wire, as shown in the figure below.
Step 9
Use a tie wrap
to secure the wires to the handle. Leave a service loop on the ground wire
between the handle and the connector such that it is the last to receive strain
if the wires are pulled.
Installing DC Power Supply Unit (A900-PWR550-D-E and A900-PWR1200-D)
Installing DC Power
Supply Unit (A900-PWR550-D-E and A900-PWR1200-D)
Before you begin
The following tools
are required:
Cables of suitable gauge
required for each type of PSU
10 AWG to 16 AWG for 550 W
PSU
8 AWG to 10 AWG for 1200 W
PSU)
Lugs fork-type or ring-type
(Burndy, see Troubleshooting )—TP10-6 or TP10-8F (recommended)
Procedure
Step 1
If the power
supply unit is already installed in the chassis, follow the steps described in
Removing
and Replacing a DC Power Supply to remove the power supply unit.
Step 2
Locate the
T-shaped terminal block plug on the DC power supply unit. See figure “DC PSU
Module (A900-PWR550-D-E) with T-Shaped Connector” in the
DC Power Specifications
section.
Step 3
Use a
wire-stripping tool to strip the ends of each of the two wires coming from the
DC-input power source to 0.27 inch (6.6 mm) ± 0.02 inch (0.5 mm) and the wire
for grounding. Do not strip more than 0.29 inch (7.4 mm) of insulation from the
wire. Stripping more than the recommended amount of wire can leave behind
exposed wire from the terminal block after installation.
Step 4
Prepare the
cables by attaching the lugs to the cables.
Step 5
Identify the
ground, positive, and negative feed positions for the terminal block
connection. The recommended wiring sequence is:
Negative (-) lead wire (top)
Ground lead wire (left)
Positive (+) lead wire (right)
Step 6
Insert the
lugged end of the cables to the connector and secure the cables using the
captive screws.
Note
The
recommended torque for securing the captive screws is 0.7 N-m.
Step 7
Ensure that the
terminal block plug is fully seated in the terminal block header on the DC
power supply panel. See the
Installing
a DC Power Supply section for installing the power supply unit into the
chassis.
Activating a DC
Power Supply
Perform the
following procedure to activate a DC power supply:
Procedure
Step 1
Remove the tape
from the circuit-breaker switch handle, and restore power by moving the
circuit-breaker switch handle to the On (|) position.
Step 2
Verify power
supply operation by checking if the power supply front panel LEDs are in the
following states:
INPUT OK LED is green
OUTPUT FAIL LED is red
If the LEDs indicate a power problem, see Troubleshooting section in the Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide.
If you are
installing 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.
If you are
installing a redundant DC power supply, repeat these steps for the second power
source.
Removing and
Replacing a DC Power Supply
This section
provides information about removing and replacing a DC power supply in the
Cisco ASR 902 Router.
Note
The Cisco ASR
902 Router power supplies are hot-swappable. If you have installed redundant
power supplies, you can replace a single power supply without interrupting
power to the router.
Caution
To avoid
erroneous failure messages, allow at least 2 minutes for the system to
reinitialize after a power supply has been removed or replaced.
Warning
When you install
the unit, the ground connection must always be made first and disconnected
last. Statement 1046
Warning
Before performing
any of the following procedures, ensure that power is removed from the DC
circuit. Statement 1003
Warning
Only trained and
qualified personnel should be allowed to install, replace, or service this
equipment. Statement 1030
Warning
Installation of
the equipment must comply with local and national electrical codes. Statement
1074
Follow these steps
to remove and replace the DC power supply on the Cisco ASR 902 Router:
Procedure
Step 1
Before
servicing the power supply, switch off the circuit breaker in your equipment
area. As an additional precaution, tape the circuit-breaker switch in the Off
position.
Step 2
Slip on the
ESD-preventive wrist strap that was included in the accessory kit.
Step 3
Switch the
power supply circuit-breaker switch to the Off (O) position.
Step 4
Pull the
terminal block plug connector out of the terminal block head in the power
supply.
Step 5
Loosen the
captive screws on the DC power supply.
Step 6
Grasping the
power supply handle with one hand, pull the power supply out from the chassis
while supporting it with the other hand.
Step 7
Replace the DC
power supply within 5 minutes. If the power supply bay is to remain empty,
install a blank filler plate (Cisco part number A900-PWR-BLANK) over the
opening, and secure it with captive installation screws.
Installing an AC power Supply
DANGER
This product requires short-circuit (over current) protection, to be provided as part of the building installation. Install
only in accordance with national and local wiring regulations.
Statement 1045
The following sections describe how to install an AC power supply in the Cisco ASR 902 Router:
Installing an AC
Power Supply Module
Follow these steps
to install an AC power supply module:
Procedure
Step 1
Ensure that the
system (earth) ground connection has been made. For ground connection
installation instructions, see the
Installing
the Chassis Ground Connection section.
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
Grasp the power
supply handle with one hand. Place your other hand underneath the power supply,
as shown in the figure below . Slide the power supply into the power supply
bay. Make sure that the power supply is fully seated in the bay.
Step 4
Tighten the
captive installation screws of the power supply. The recommended maximum torque
is 5.5 in.-lb (.62 N-m).
Warning
Power supply
captive installation screws must be tight to ensure protective grounding
continuity. Statement 289
Recommended Power Cables
We recommend the following power cables for Cisco ASR 902 routers:
Table 2. Power Cable PIDs for A900-PWR550-A (550 W)
PID
Description
CAB-AC
AC POWER CORD, UNITED STATES, 125V, 10A, 2.5m, C13,NEMA, 5-15P
CAB-AC-RA
AC POWER CORD, UNITED STATES, 125V, 10A, 2.5m, RA-C13, NEMA, 5-15P
CAB-ACA
AC Power Cord (Australia), C13, AS 3112, 2.5m
CAB-ACA-RA
AC Power Cord, Australian, 10A, Right Angle
CAB-ACC
AC Power Cord (China), C13, GB15934, CCC, 2.5m
CAB-ACC-RA
AC Power Cord China, Right Angle
CAB-ACE
AC Power Cord (Europe), C13, CEE 7, 1.5M
CAB-ACE-RA
AC Power Cord Europe, Right Angle
CAB-ACI
AC Power Cord (Italy), C13, CEI 23-16, 2.5m
CAB-ACI-RA
AC Power Cord, Italian, Right Angle
CAB-ACR
AC Power Cord (Argentina), C13, EL 219 (IRAM 2073), 2.5m
CAB-ACR-RA
AC POWER CORD ARGENTINA, Right Angle
CAB-ACS
AC Power Cord (Switzerland), C13, IEC 60884-1, 2.5m
CAB-ACS-RA
AC Power Cord, Switzerland, Right Angle
CAB-ACU
AC Power Cord (UK), C13, BS 1363, 2.5m
CAB-ACU-RA
AC Power Cord UK, Right Angle
CAB-IND
AC Power Cord (India), C13
CAB-IND-RA
AC Power Cord (India), RA-C13
CAB-JPN
AC Power Cord (Japan), C13, JIS C 8303, 2.5m
CAB-JPN-RA
AC Power Cord (Japan), RA-C13, JIS C 8303, 2.5m
Activating an AC
Power Supply
Follow these steps
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 that the power supply LEDs are in the following
states:
INPUT OK LED is green
OUTPUT FAIL LED is green
Step 4
If the LEDs
indicate a power problem, see
Troubleshooting
for troubleshooting information.
Step 5
If you are
installing a redundant power supply, repeat these steps for the second power
source.
Note
If you are
installing 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.
Removing and
Replacing an AC Power Supply
This section
describes how to remove and replace an AC power supply.
Note
The Cisco ASR
902 Router power supplies are hot-swappable. If you have installed redundant
power supplies, you can replace a single power supply without interrupting
power to the router.
Caution
To avoid
erroneous failure messages, allow at least 2 minutes for the system to
reinitialize after a power supply has been removed or replaced.
Warning
When you install
the unit, the ground connection must always be made first and disconnected
last. Statement 1046
Warning
Before performing
any of the following procedures, ensure that power is removed from the DC
circuit. Statement 1003
Warning
Only trained and
qualified personnel should be allowed to install, replace, or service this
equipment. Statement 1030
Warning
Installation of
the equipment must comply with local and national electrical codes. Statement
1074
Follow these steps
to remove and replace an AC power supply:
Procedure
Step 1
Disconnect the
power cord from the power source. Do not touch the metal prongs on the power
cord when it is still connected to the power supply.
Step 2
Remove the
power cord from the power connection on the power supply. Do not touch the
metal prongs embedded in the power supply.
Step 3
Loosen the
captive installation screws.
Step 4
Grasp the AC
power supply with one hand, and slide it part of the way out of the chassis.
Place your other hand underneath the power supply, and slide it completely out
of the chassis.
Installing Dust
Caps
The following list
provides the product IDs (PIDs) for the dust caps that are available for each
port type:
RJ-45—A900-DCAP-RJ45-S= (24
dust caps per package) or A900-DCAP-RJ45-L= (240 caps per package)
SFP—A900-DCAP-SFP-S= (24
caps per package) or A900-DCAP-SFP-L= (240 caps per package)
USB—A900-DCAP-USB-S= (12 dust caps
per package) or A900-DCAP-USB-L= (120 dust caps per package)
XFP/QSFP—A900-DCAP-XFP-S= (12 dust
caps per package) or A900-DCAP-XFP-L= (120 dust caps per package)
1
Dust cap
—
To install the dust
cap:
Hold the dust cap
by its handle.
Insert the dust
cap in to the appropriate unused ports (RJ-45, SFP, USB, or XFP/QSFP) on the
chassis front panel.
Connecting a Cisco ASR 902 Router to the Network
Note
When installing the cables to the RSPs, we recommend that you leave a service loop of extra cabling for fan tray removal.
The following sections describe how to connect a Cisco ASR 902 Router to the network:
Connecting Console Cables
The following sections describe how to connect to the Cisco ASR 902 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.
Procedure
Step 1
Connect the end
of the console cable with the RJ45 connector to the light blue console port on
the router.
or
Connect a USB
Type A-to-Type A cable to the USB console port, as shown in the figure below.
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:
Installing
the Cisco USB Device Driver
Uninstalling
the Cisco USB Device Driver
Note
You cannot use
the USB port and the EIA port concurrently. See the Connecting to the Auxiliary
Port. When the USB port is used, it takes priority over the RJ45 EIA port.
Note
The USB Type
A-to-Type A cable is not included with the Cisco ASR 902 Router; it is ordered
separately.
Step 2
Connect the end
of the cable with the DB-9 connector (or USB Type-A) to the terminal or PC. If
your terminal or PC has a console port that does not accommodate a DB-9
connector, you must provide an appropriate adapter for that port.
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 flow
control
no parity
1 stop-bit
Connecting to the
Console Port Using Mac OS X
This procedure
describes how to connect a Mac OS X system USB port to the console using the
built-in OS X terminal utility.
Procedure
Step 1
Use the Finder
to choose
Applications >
Utilities >
Terminal.
Step 2
Connect the OS
X USB port to the router.
Step 3
Enter the
following commands to find the OS X USB port number:
Example:
macbook:user$ cd /dev
macbook:user$ ls -ltr /dev/*usb*
crw-rw-rw- 1 root wheel 9, 66 Apr 1 16:46 tty.usbmodem1a21 DT-macbook:dev user$
Step 4
Connect to the
USB port with the following command followed by the router USB port speed:
Example:
macbook:user$ screen /dev/tty.usbmodem1a21 9600
To disconnect
the OS X USB console from the terminal window, enter Ctrl-A followed by Ctrl-\
Connecting to the
Console Port Using Linux
This procedure
shows how to connect a Linux system USB port to the console using the built-in
Linux terminal utility.
Procedure
Step 1
Open the Linux
terminal window.
Step 2
Connect the
Linux USB port to the router.
Step 3
Enter the
following commands to find the Linux USB port number:
Example:
root@usb-suse# cd /dev
root@usb-suse /dev# ls -ltr *ACM*
crw-r--r-- 1 root root 188, 0 Jan 14 18:02 ttyACM0
root@usb-suse /dev#
Step 4
Connect to the
USB port with the following command, followed by the router USB port speed:
Example:
root@usb-suse /dev# screen /dev/ttyACM0 9600
To disconnect
the Linux USB console from the terminal window, enter Ctrl-A followed by : then
quit.
Installing the Cisco
USB Device Driver
A USB device driver
must be installed the first time a Microsoft Windows-based PC is connected to
the USB serial port on the router.
This procedure
describes how to install the Microsoft Windows USB device driver in Microsoft
Windows XP / Windows Vista / Windows 2000 / Windows 7 / Windows 8. Download the
driver for your router model from the Tools and Resources Download Software
site, USB Console Software category, at:
To Download the
driver, you must have a valid service contract associated to your Cisco.com
profile.
Procedure
Step 1
Unzip the file
asr-9xx_usbconsole_drivers.zip.
Step 2
Double-click
xrusbser_ver2100_installer.exe in the XR21x141x-Win-DriversOnly-Vers2.1.0.0/EXE
folder. Installation Wizard GUI is displayed.
Step 3
Click
Next. The InstallShield Wizard Completed window is
displayed.
Step 4
Click
Finish.
Step 5
Connect the USB
cable to the PC and router USB console ports. Follow the on-screen instructions
to complete the installation of the driver.
Step 6
XR21V1401 USB
UART Device driver successfully installed message is displayed.
The USB console
is ready for use.
Uninstalling the
Cisco USB Device Driver
This procedure
describes how to uninstall the Microsoft Windows USB device driver in Microsoft
Windows XP / Windows Vista / Windows 2000 / Windows 7 / Windows 8.
Note
Disconnect the
router console terminal before uninstalling the driver.
Procedure
Step 1
Choose
Start >
Control
Panel >
Add or
Remove Programs (Uninstall a program).
Step 2
Scroll to
Windows Driver Package - Exar corporation (xrusbser) Ports and click
Remove. The Program Maintenance window is displayed.
Step 3
Click
Yes to uninstall the driver.
Connecting to the
Auxiliary Port
When a modem is
connected to the auxiliary port, a remote user can dial in to the router and
configure it. Use a light blue console cable and the DB-9-to-DB-25 connector
adapter.
Note
The console cable
and DB-9-to-DB-25 connector are not included with the Cisco ASR 902 Router;
they can be ordered separately from Cisco.
To connect a modem
to the auxiliary port on the router, follow these steps:
Procedure
Step 1
Connect the
RJ45 end of the adapter cable to the black AUX port on the router, as shown in
the figure below.
Label
Component
Label
Component
1
RJ45
AUX port
3
DB-9
to DB-25 adapter
2
RJ45
to DB-9 cable
4
Modem
Step 2
Connect the DB-9
end of the console cable to the DB-9 end of the modem adapter.
Step 3
Connect the
DB-25 end of the modem adapter to the modem.
Step 4
Make sure that
your modem and the router auxiliary port are configured for the same
transmission speed (up to 115,200 bps is supported) and for mode control with
data carrier detect (DCD) and data terminal ready (DTR) operations.
Connecting a Management Ethernet Cable
When using the Ethernet Management port in the default mode (speed-auto
and duplex-auto) the port operates in the auto-MDI/MDI-X mode. The port
automatically provides the correct signal connectivity through the
Auto-MDI/MDI-X feature. The port automatically senses a crossover or
straight-through cable and adapts to it.
However, when the Ethernet Management port is configured to a fixed
speed (10 or 100 Mbps) through command-line interface (CLI) commands, the port
is forced to the MDI mode.
When in a fixed-speed configuration and MDI mode:
Use a crossover cable to
connect to an MDI port
Use a straight-through cable to connect to an MDI-X port
Warning
To comply with the Telcordia GR-1089 NEBS standard for
electromagnetic compatibility and safety, connect the Management Ethernet ports
only to intra-building or unexposed wiring or cable. The intrabuilding cable
must be shielded and the shield must be grounded at both ends. The
intra-building port(s) of the equipment or subassembly must not be metallically
connected to interfaces that connect to the OSP or its wiring. These interfaces
are designed for use as intra-building interfaces only (Type 2 or Type 4 ports
as described in GR-1089-CORE) and require isolation from the exposed OSP
cabling. The addition of Primary Protectors is not sufficient protection in
order to connect these interfaces metallically to OSP wiring. Statement
Installing and
Removing SFP and XFP Modules
The Cisco ASR 902
Router supports a variety of SFP and XFP modules, including optical and
Ethernet modules. For information on how to install and remove SFP and XFP
modules, see the documentation for the SFP or XFP module at:
We recommend that
you wait for 30 seconds between the removal and insertion of an SFP on an
interface module. We recommend this to allow the transceiver software to
initialize and synchronize with the RSP. Changing an SFP more quickly could
result in transceiver initialization issues that disable the SFP.
Connecting a USB
Flash Device
To connect a USB
flash device to the Cisco ASR 902 Router, insert the memory stick in the USB
port labeled 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 figure below
shows the USB port connector on the Cisco ASR 902 Router.
Removing a USB Flash
Device
To remove and
replace a USB flash token memory stick from and into a Cisco ASR 902 Router,
follow these steps:
Procedure
Pull the memory
stick from the USB port.
To replace the
Cisco USB Flash memory stick, simply insert the module into the USB port
labeled MEM, as shown in Figure “Cisco ASR 902 Router Flash Token Memory
Stick”. 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.
Note
You can
insert or remove the memory stick whether the router is powered on or not.
This completes
the USB Flash memory installation procedure.
Connecting Timing Cables
Note
When installing the cables to the RSPs, we recommend that you leave a service loop of extra cable to enable fan tray removal.
The following sections describe how to connect timing cables to the Cisco ASR 902 Router:
Connecting a Cable
to the BITS Interface
The following steps
describe how to connect a cable to the router’s BITS port:
Procedure
Step 1
Confirm that
the router is powered off.
Step 2
Connect one end
of the cable to the BITS port using a straight-through, shielded RJ48C-to-RJ48C
cable.
Step 3
Connect the
other end to the BTS patch or demarcation panel at your site.
Step 4
Turn on the
power to the router.
For information about the BITS port pinouts, see Troubleshooting.
Note
Use of two
BITS sources or a Y-cable is optional. Each BITS input port is routed to both
the RSPs, so that the SETS device on each RSP has visibility to both the BITS
inputs.
Warning
To comply
with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and
safety, connect the BITS ports only to intra-building or unexposed wiring or
cable. The intrabuilding cable must be shielded and the shield must be grounded
at both ends. The intra-building port(s) of the equipment or subassembly must
not be metallically connected to interfaces that connect to the OSP or its
wiring. These interfaces are designed for use as intra-building interfaces only
(Type 2 or Type 4 ports as described in GR-1089-CORE) and require isolation
from the exposed OSP cabling. The addition of Primary Protectors is not
sufficient protection in order to connect these interfaces metallically to OSP
wiring. Statement
Connecting Cables to a GPS Interface
Note
When installing the cables to the RSP, we recommend that you leave a service loop of extra cable to enable fan tray removal.
The following sections describe how to connect cables from the Cisco ASR 902 Router to a GPS unit for input or output timing
of frequency:
Connecting a Cable
to the Input 10-MHz or 1-PPS Interface
Procedure
Step 1
Connect one end
of a mini-coax cable to the GPS unit.
Step 2
Connect the
other end of the mini-coax cable to the 10-MHz or 1-PPS port on the RSP of the
Cisco ASR 902 Router.
Connecting a Cable
to the Output 10-MHz or 1-PPS Interface
Procedure
Step 1
Connect one end
of a mini-coax cable to the Slave unit.
Step 2
Connect the
other end of the mini-coax cable to the 10-MHz or 1-PPS port on the RSP of the
Cisco ASR 902 Router.
Connecting a Cable
to the ToD Interface
Procedure
Step 1
Connect one end
of a straight-through Ethernet cable to the GPS unit.
Step 2
Connect the
other end of the straight-through Ethernet cable to the ToD or 1-PPS port on
the RSP of the Cisco ASR 902 Router.
Note
For
instructions on how to configure clocking, see the Cisco ASR 900 Series
Aggregation Services Routers Configuration Guide.
Warning
To comply
with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and
safety, connect the ToD ports only to intra-building or unexposed wiring or
cable. The intrabuilding cable must be shielded and the shield must be grounded
at both ends. The intra-building port(s) of the equipment or subassembly must
not be metallically connected to interfaces that connect to the OSP or its
wiring. These interfaces are designed for use as intra-building interfaces only
(Type 2 or Type 4 ports as described in GR-1089-CORE) and require isolation
from the exposed OSP cabling. The addition of Primary Protectors is not
sufficient protection in order to connect these interfaces metallically to OSP
wiring.
Note
For more
information about GPS-port pinouts, see Troubleshooting.
Connecting a Cable
to the GNSS Antenna Interface
Note
The GNSS module
is not hot swappable.
Procedure
Step 1
Connect one end
of a shielded coaxial cable to the GNSS RF IN port.
Step 2
Connect the
other end of the shielded coaxial cable to the GNSS antenna after the primary
protector.
Note
The GNSS RF
In port should have a primary protector installed to meet the Local Safety
guidelines.
The GNSS RF In
coaxial cable shield must be connected to the Facility Equipment Ground through
the chassis. The chassis must have the ground wire connected to the Facility
Equipment Ground.
1
Screw
on the GNSS Module
2
Inserting the GNSS Module
Connecting Ethernet
Cables
The Cisco ASR 902
Router interface modules support RJ45 and Ethernet SFP ports. For instructions
on how to connect cables to Ethernet SFP ports, see the Connecting Cables to
SFP Modules .
The RJ45 port
supports standard straight-through and crossover Category 5 unshielded
twisted-pair (UTP) cables. Cisco does not supply Category 5 UTP cables; these
cables are available commercially.
Warning
To comply with
the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and
safety, connect the Gigabit Ethernet ports only to intra-building or unexposed
wiring or cable. The intrabuilding cable must be shielded and the shield must
be grounded at both ends. The intra-building port(s) of the equipment or
subassembly must not be metallically connected to interfaces that connect to
the OSP or its wiring. These interfaces are designed for use as intra-building
interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE) and
require isolation from the exposed OSP cabling. The addition of Primary
Protectors is not sufficient protection in order to connect these interfaces
metallically to OSP wiring.
Note
When installing
the cables to the RSPs, we recommend that you leave a service loop of extra
cable to enable fan tray removal.
Follow these steps
to connect a cable to a copper Gigabit Ethernet port:
Procedure
Step 1
Confirm that
the router is powered off.
Step 2
Connect one end
of the cable to the Gigabit Ethernet port on the router.
Step 3
Connect the
other end to the BTS patch or demarcation panel at your site.
Connecting Cables to SFP Modules
For information on connecting cables to Cisco optical and Ethernet SFP interfaces, see:
The physical layer
interface for the Cisco ASR 902 Router T1/E1 port is a customer-installed
high-density connector. The high-density connector has thumbscrews that should
be screwed into the interface when the cable is installed.
The figure below
shows the T1/E1 cable connector, and Figure 3-28 shows the connection between
the T1/E1 interface and the patch panel.
Note
A patch panel is
required in order to connect the high-density interface connector to individual
T1/E1 lines.
Installing the Cable
Connector
One end of the cable
has a 100-pin connector that plugs into the T1/E1 interface module. Use the
thumbscrews on either side of the connector to secure the cable to the
interface.
The other end of the
cable has two 50-pin Telco connectors that are attached to the rear of a
24-port RJ45 patch panel. Both connectors are identical: one is for Transmit
(TX) and the other is for Receive (RX).
The figure below
shows how the cable is connected between the T1/E1 interface module and the
patch panel.
Label
Interface
1
Patch panel
interfaces
For information about
the pinout of the cable connecting the T1/E1 interface to the rear of the patch
panel, see the
T1/E1 Port Pinouts.
RJ45 Cable
Pinouts
T1 lines from
individual subscribers are attached to RJ45 connectors on the front of the
24-port patch panel. Each RJ45 port accommodates an individual T1 subscriber
line.
For information about
the T1/E1 ports, see the
T1/E1
Port Pinouts section.
Patch Panel Dimensions
Following are the various patch panel dimensions.
Connecting Cables to the Patch Panel
If you are connecting two T1/E1 interfaces to each other, you must
cable both interfaces’ patch panels together using a T1 crossover cable or a T1
straight-through cable. Use shielded cables. The type of cable you use
(crossover or straight-through) depends on how the T1/E1 interfaces are cabled
to their patch panels:
If both the T1/E1
interfaces are connected to their patch panels in the same manner (TX to
Transmit and RX to Receive, or TX to Receive and RX to Transmit), use a T1
crossover cable to connect the patch panels.
If both the T1/E1 interfaces are connected to their patch panels in
a different configuration (TX to Transmit and RX to Receive on one interface,
and TX to Receive and RX to Transmit on the other interface), use a T1
straight-through cable (standard RJ45 patch cable) to connect the patch panels.
Warning
To comply with the Telcordia GR-1089 NEBS standard for
electromagnetic compatibility and safety, connect the T1/E1 ports only to
intra-building or unexposed wiring or cable. The intrabuilding cable must be
shielded and the shield must be grounded at both ends. The intra-building
port(s) of the equipment or subassembly must not be metallically connected to
interfaces that connect to the OSP or its wiring. These interfaces are designed
for use as intra-building interfaces only (Type 2 or Type 4 ports as described
in GR-1089-CORE) and require isolation from the exposed OSP cabling. The
addition of Primary Protectors is not sufficient protection in order to connect
these interfaces metallically to OSP wiring.
Recommended Patch Panel
We recommend using the following T1/E1 patch panels:
The following patch panels are introduced:
CABLE-16T1E1—Cable for
16-Port T1/E1 Interface Module, 12 feet
CABLE-32T1E1—Cable for
32-Port T1/E1 Interface Module
PANEL-16-BNC—Breakout panel with 16 T1/E1 75-ohm BNC ports
PANEL-32-RJ4—Breakout panel with 32 T1/E1 100/120- ohm RJ48 ports8
Also, the following patch panels are available from Optical Cable
Corporation (http://www.occfiber.com).
48-port T1 RJ45 patch panel (part number DCC4884/25T1-S)
16-port E1 BNC patch panel (part number DCC16BNC/25T1-S)
To order a patch panel, contact the Sales and Marketing Support staff
at Optical Cable Corporation:
800-622-7711 (toll-free in the U.S.A.)
540-265-0690 (outside the U.S.A.)
Connecting Serial Cables
The figure below shows the supported serial connectors, and the tables
below detail the supported cables with the Cisco ASR 902 Router.
Caution
The Cisco ASR 902 Router currently only supports the EIA/TIA-232
connector.
Note
The Cisco ASR 902 Router currently supports only the EIA/TIA-232
connector.
Table 3. Interface Cables for 12-in-1 Connector
Cable Type
Product Number
Length
Male/Female
Connector
V.35 DTE
CAB-SS-V35MT
10 ft.
Male
M34
V.35 DCE
CAB-SS-V35FC
10 ft.
Female
M34
EIA/TIA-232 DTE
CAB-SS-232MT
10 ft.
Male
DB-25
EIA/TIA-232 DCE
CAB-SS-232FC
10 ft.
Female
DB-25
EIA/TIA-449 DTE
CAB-SS-449MT
10 ft.
Male
DB-37
EIA/TIA-449 DCE
CAB-SS-449FC
10 ft.
Female
DB-37
X.21 DTE
CAB-SS-X21MT
10 ft.
Male
DB-15
X.21 DCE
CAB-SS-X21FC
10 ft.
Female
DB-15
EIA/TIA-530 DTE
CAB-SS-530MT
10 ft.
Male
DB-25
EIA/TIA-530 DTE
CAB-SS-530FC
10 ft.
Female
DB-25
Table 4. Interface Cables for 68-Pin Connector
Cable Type
Product Number
Length
Male/Female
Connector
4-port EIA-232 DTE
CAB-HD4-232MT
10 ft.
Male
DB-25
4-port EIA-232 DCE
CAB-HD4-232FC
10 ft.
Female
DB-25
4-port EIA-232 DTE
CAB-QUAD-ASYNC-F
10 ft.
Female
RJ-45
4-port EIA-232 DTE
CAB-QUAD-ASYNC-M
10 ft.
Male
RJ-45
4-port EIA-232 DTE
CAB-9AS-M
10 ft.
Male
DB-9
Connecting the Fan
Tray Alarm Port
The fan tray includes
an alarm port that maps to 2 dry contact alarm inputs.
The pins on the alarm
port are passive signals, and can be configured as Normally Open (an alarm is
generated when current is interrupted) or Normally Closed (an alarm is
generated when a circuit is established) alarms. You can configure each alarm
input as critical, major, or minor. An alarm triggers alarm LEDs and alarm
messages. The relay contacts can be controlled through an appropriate
third-party relay controller. The open/close configuration is an option
controlled in Cisco IOS.
Warning
To comply with the
Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the alarm ports only to intra-building or unexposed wiring or cable.
The intrabuilding cable must be shielded and the shield must be grounded at
both ends. The intra-building port(s) of the equipment or subassembly must not
be metallically connected to interfaces that connect to the OSP or its wiring.
These interfaces are designed for use as intra-building interfaces only (Type 2
or Type 4 ports as described in GR-1089-CORE) and require isolation from the
exposed OSP cabling. The addition of Primary Protectors is not sufficient
protection in order to connect these interfaces metallically to OSP wiring.
Only pins 1, 2 and 8
are available for customer use. The remaining pins are for Cisco manufacturing
test, and should not be connected. Use a shielded cable for connection to this
port for EMC protection. For a summary of pinouts on the alarm port see
Troubleshooting.
Connecting a Cable
to the Fan Tray Alarm Port
This procedure
describes how to connect a cable to the Cisco ASR 902 Router fan tray port.
Procedure
Step 1
Attach an RJ45
cable to the alarm port.
Step 2
Attach the
other end of the RJ45 cable to the relay controller.