Cisco 7401 User manual

Quick Start Guide
Cisco 7401ASR Router
1Documentation and Resources
2Prepare for Installation
3Install the Parts
4Rack-Mount the Router
5Connect the Router to the Network
6Connect Power to the Router
7Configure the Router
8Obtain Technical Assistance

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1 Documentation and Resources
This section contains information to help you prepare for installing the Cisco 7401ASR router. It contains a list of online
documentation and resources.
Documentation Survey
Is Cisco documentation helpful? Click here or go to
http://forums.cisco.com/eforum/servlet/viewsflash?cmd=showform&pollid=rtgdoc01!rtgdoc to give us your feedback.
Related Documentation
For detailed hardware installation instructions, refer to the online Cisco 7401ASR Installation and Configuration
Guide—DOC-7812243 at: http://www.cisco.com/univercd/cc/td/doc/product/core/7401/7401icg/index.htm
For other documentation, see the following online documents that list other documentation and provide links to the documents:
•Cisco 7401 Router Documentation Master Index at:
http://www.cisco.com/univercd/cc/td/doc/product/core/7401/ol3514.htm
•Cisco 7401 Router Port Adapter Documentation Master Index at:
http://www.cisco.com/univercd/cc/td/doc/product/core/7401/ol3533.htm
•Cisco 7401 Router Troubleshooting Master Index—This document provides links to troubleshooting documentation, TAC
Tech Notes, and troubleshooting tools and utilities at:
http://www.cisco.com/univercd/cc/td/doc/product/core/7401/ol3517.htm
Other Useful Links
•For Cisco IOS Configuration documentation including release notes and feature modules, see:
http://www.cisco.com/univercd/cc/td/doc/product/software/index.htm
Obtain Documentation
Cisco provides several ways to obtain documentation, technical assistance, and other technical resources. These sections explain
how to obtain technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation on the World Wide Web at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
http://www.cisco.com
International Cisco websites can be accessed from this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which may have
shipped with your product. The Documentation CD-ROM is updated regularly and may be more current than printed
documentation. The CD-ROM package is available as a single unit or through an annual or quarterly subscription.
Registered Cisco.com users can order a single Documentation CD-ROM (product number DOC-CONDOCCD=) through the
Cisco Ordering tool:
http://www.cisco.com/en/US/partner/ordering/ordering_place_order_ordering_tool_launch.html

3
All users can order monthly or quarterly subscriptions through the online Subscription Store:
http://www.cisco.com/go/subscription
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
You can order Cisco documentation in these ways:
•Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Networking Products
MarketPlace:
http://www.cisco.com/en/US/partner/ordering/index.shtml
•Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems
Corporate Headquarters (California, U.S.A.) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS
(6387).
Documentation Feedback
You can submit comments electronically on Cisco.com. On the Cisco Documentation home page, click Feedback at the top of
the page.
You can e-mail your comments to [email protected].
You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the
following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
Obtain Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
•The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as ordering and customer
support services. Access the Cisco Product Catalog at this URL:
http://www.cisco.com/en/US/products/products_catalog_links_launch.html
•Cisco Press publishes a wide range of networking publications. Cisco suggests these titles for new and experienced users:
Internetworking Terms and Acronyms Dictionary, Internetworking Technology Handbook, Internetworking
Troubleshooting Guide, and the Internetworking Design Guide. For current Cisco Press titles and other information, go to
Cisco Press online at this URL: http://www.ciscopress.com
•Packet magazine is the Cisco quarterly publication that provides the latest networking trends, technology breakthroughs,
and Cisco products and solutions to help industry professionals get the most from their networking investment. Included
are networking deployment and troubleshooting tips, configuration examples, customer case studies, tutorials and training,
certification information, and links to numerous in-depth online resources. You can access Packet magazine at this URL:
http://www.cisco.com/go/packet
•iQ Magazine is the Cisco bimonthly publication that delivers the latest information about Internet business strategies for
executives. You can access iQ Magazine at this URL: http://www.cisco.com/go/iqmagazine
•Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in
designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal
at this URL: http://www.cisco.com/en/US/about/ac123/ac147/about_cisco_the_internet_protocol_journal.html
•Training—Cisco offers world-class networking training. Current offerings in network training are listed at this URL:
http://www.cisco.com/en/US/learning/le31/learning_recommended_training_list.html

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2 Prepare for Installation
This section contains information about tools and parts, warnings, site preparation information, and information for
workbench or tabletop installation and rack-mount installation.
Warning Only trained and qualified personnel should install, replace, or service this equipment.
Warning Read the installation instructions before you connect the system to its power source.
Warning This unit is intended for installation in restricted access areas. A restricted access area is where access canonly
be gained by service personnel through the use of a special tool, lock and key, or other means of security, and is
controlled by the authority responsible for the location.
Before beginning this router installation, read the Cisco 7401ASR Regulatory Compliance and Safety Information.
Site Preparation and Unpacking
•Lift the router safely out of the packing container.
•Ensure the power service at the site is suitable for the router you are installing.
•Check the packing slip to ensure that all the proper components are present.
•Locate and have accessible the Site Log for recording information about this installation.
Tools and Parts
Use the following list of tools and parts as a checklist for preparing for installing the Cisco 7401ASR router:
•ESD-preventative wrist strap
•Power cord
•Appropriate cables to connect the router to the network and console terminal
•One serial port adapter cable for each serial port to connect the port with the remote device or network Ethernet transceiver
•Data service unit (DSU) to connect each serial port to an external network
•Tape measure and level
•Screwdrivers: Number 2 Phillips screwdriver and 3/16-inch flat-blade screwdriver
•Grounding lug and wires:
– A grounding lug with two number-10 screw holes with a 0.63-inch (16.002-mm) spacing between them
– A wire receptacle large enough to accept a 6-AWG multistrand, copper wire
– Two Phillips machine screws with locking washers—M5 (metric), 0.031-inch (.08-mm) pitch, 0.315-inch (8-mm) length
– A crimping tool to fit the grounding lug wire receptacle
– One grounding wire—6-AWG, 0.162-inch (4.115-mm) diameter, with approximately 0.108-inch (2.743-mm)
insulation, for a total wire diameter of approximately 0.27 inches (6.858 mm). The wire length depends on your router
location and site environment.
•The rack-mount and cable-management kit:
– Two rack-mount brackets and one cable management bracket
– Screws: Four 12-24 x 0.5-inch screws, four 8-18 x .37-inch screws for use with a 19-inch rack, four 8 x .375-inch screws
for use in a 21–23-inch rack, and one M4 x 20-mm screw

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•T1 channel service unit/data service unit (CSU/DSU) that converts the High-Level Data Link Control (HDLC) synchronous
serial data stream into a T1 data stream with the correct framing and ones density to connect a serial port to a T1 network.
(Some telephone systems require a minimum number of 1 bits per time unit in a data stream, called ones density.) Several
T1 CSU/DSU devices are available as additional equipment, and most provide a V.35, EIA/TIA-449, or EIA-530 electrical
interface.
Prepare for Workbench or Tabletop Installation
For a workbench or tabletop installation, verify the following before installing the router:
•The router is off the floor and has adequate ventilation.
•An adequate chassis ground (earth) connection exists for the router.
•The router has at last 3 inches (7.62 cm) of clearance at the inlet and exhaust vents (sides of router).
•The router has 19 inches (48.3 cm) clearance at the front and rear to allow for CompactFlash Disk, Gigabit Interface
Converter (GBIC), and port adapter replacement or installation, or to access cables or equipment.
•The port adapter filler panel is installed if a port adapter is not installed. The slot must not be empty.
For cable-management bracket installation instructions, see page 14.
Prepare for Rack-Mount Installation
Make these decisions before you begin the rack-mounting tasks:
•Decide whether or not you want to front- or rear-mount the chassis.
•Decide whether or not you want to attach the cable-management bracket.
•Determine the type of rack—four-post or two-post—that you will be using.
Identify I/O Panel Ports
1Port adapter slot (installed port adapter shown) 8Console port
2Port adapter latch 9Alarm port
3GBIC port 0 10 Ground for ESD wrist strap with banana jack
4FE port 0 11 Power switch
5FE port 1 12 CompactFlash Disk slot
6GBIC port 1 13 Power connector
7Auxiliary port
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3 Install the Parts
This section provides installation instructions for the CompactFlash Disk, Gigabit Interface Converter, and port adapter.
Install the CompactFlash Disk
Figure 1 Inserting the CompactFlash Disk
Insert the CompactFlash Disk into the CompactFlash Disk slot (1) with the label with the vendor name and memory size facing
up. The CompactFlash Disk protrudes when completely inserted.
To remove the CompactFlash Disk, grasp and pull it from the slot (2).
About the CompactFlash Disk
Note Only the CompactFlash Disk is supported in a Cisco 7401ASR router. Other types of Flash Disks are not supported.
•The larger the CompactFlash Disk size, the longer the system boot time.
•The CompactFlash Disk supports online insertion and removal (OIR).
•Use the CompactFlash Disk to store your configuration files and Cisco IOS software image. The Cisco 7401ASR router has
no onboard Flash memory.
For more information on CompactFlash Disks, see the Cisco 7401 Installation and Configuration Guide.
1Insert the CompactFlash Disk 2Remove the CompactFlash Disk
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Install the Gigabit Interface Converter
Warning Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected,
avoid exposure to laser radiation and do not stare into open apertures.
Warning Class 1 laser product.
Warning Class 1 LED product.
•Only two of the four Gigabit Ethernet or Fast Ethernet/Ethernet ports may be used at the same time.
•GBIC port 0, FE port 0, and the port adapter are on PCI bus 0. GBIC port 1 and FE port 1 are on PCI bus 1.
•The Gigabit Interface Converter supports online insertion and removal (OIR).
•Both native Gigabit Ethernet ports and Fast Ethernet/Ethernet ports are reported as GE0/0 and GE0/1 in software. You must
use the media-type command to select which media type you want to use before you configure these ports. See page 26.
•For more information on GigabitEthernet GBICs, mode conditioning patch cords, cabling specifications, see the Cisco 7401
Installation and Configuration Guide.
Figure 2 Installing a Gigabit Ethernet GBIC
Step 1 Turn the Gigabit Ethernet Gigabit Interface Convertor (GBIC) (1) so the label side is up and the alignment groove (2)
is down.
Note The GBIC is keyed so that it cannot be inserted incorrectly.
Step 2 Insert the GBIC into GBIC port 0 or 1. Repeat Step 2 if you are inserting a second GBIC.
Do not remove the GBIC plugs until you are ready to install the cables.
1GBIC 4GBIC port1
2Alignment groove 5Plug
3GBIC port 0
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Replace the SDRAM DIMM
The SDRAM DIMM comes installed with your Cisco 7401ASR router. To replace the SDRAM, follow these instructions:
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the
power at the circuit breaker on DC units.
Warning When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the card. Some
platforms have an ESD connector for attaching the wrist strap. Do not directly touch the system board with your
hand or any metal tool, or you could shock yourself.
Removing the Cover
Step 1 Power off the router.
Step 2 Remove any cables from the Cisco 7401ASR router, including the power cables. For AC power supplies, unplug the AC
power cord from the power outlet. For DC power supplies, to ensure that all power is off, locate the circuit breaker on
the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle
of the circuit breaker in the OFF position.
Step 3 Remove the Cisco 7401ASR router from the rack, if it is rack-mounted.
Figure 3 Removing the Screws and Loosening the Cover
Step 4 Remove the four screws holding the cover to the chassis.
Note If needed, use a Phillips recess flat-head screw, M3.5 x 6-mm long, type B thread, steel with black zinc coating,
as a replacement.
Step 5 Insert a flat-blade screwdrivers in each of the side cover removal slots.
Step 6 Push the screwdriver blade against the cover latches to release the cover, as shown in Figure 3. The cover moves forward
about one-quarter inch.
1Cover screws 2Cover removal slot and screwdriver
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Figure 4 Removing the Cover
Step 7 Slide the cover forward about one-half inch and then lift it from the chassis.
Remove and Install the DIMM
Follow these steps to remove and install the SDRAM DIMM.
Figure 5 Removing and Replacing the DIMM
Step 1 Attach an ESD-preventative wrist strap between you and an unpainted router surface.
Step 2 Locate the DIMM.
Step 3 Press both spring latches outward to release the DIMM. See Figure 5.
Step 4 Gently pull the DIMM free from the DIMM socket, taking care not to touch the pins that insert into the socket. Place
the DIMM in an anti-static bag.
1Latch on DIMM socket 3Notch
2DIMM
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Caution Forcing the DIMM, into the socket can damage the DIMM. Use the notches on the DIMM to align the DIMM in
the DIMM socket before inserting it.
Step 5 Locate the notches and align the DIMM with the socket before inserting it.
Step 6 Gently insert the new DIMM, taking care not to damage the pins on the edge of the DIMM.
Step 7 Press the spring latches to lock the DIMM in place.
Step 8 Replace the cover; lower it onto the chassis and push the cover toward the rear of the chassis to lock it in place.
Step 9 Replace and tighten the four cover screws.
Step 10 Replace the Cisco 7401ASR router in the rack. See the “Rack-Mount the Router” section on page 12 for instructions.
Step 11 Attach the cables and thread them through the cable management bracket if appropriate.
Step 12 Attach the power cables. If you have a DC power supply, attach the –V and +V leads to the power supply. Repeat this
step if you have a dual-DC power supply. Then switch the circuit breaker to the ON position.
Step 13 Power on the router.
For memory specifications and configurations, see the online Cisco 7401ASR Installation and Configuration Guide at
http://www.cisco.com/univercd/cc/td/doc/product/core/7401/7401icg/index.htm.
Replace the Port Adapter or Service Adapter
The port adapter or service adapter ships installed. These instructions are provided for future use. Cabling information is
included with the specific port adapter documentation.
Figure 6 Inserting the Port Adapter
Warning When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the card. Some
platforms have an ESD connector for attaching the wrist strap. Do not directly touch the midplane or backplane
with your hand or any metal tool, or you could shock yourself.
1Port adapter latch 3Port adapter slot guide
2Port adapter partially removed 4Ground for ESD wrist strap banana jack
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Step 1 Use an ESD wrist strap to ground yourself to the router. A banana jack ground is to the left of the power switch.
Step 2 To remove a port adapter, use a Phillips screwdriver to turn the screw holding the port adapter latch. The screw should
be loose enough to allow the latch to rotate to an unlocked position (1). The latch can rotate 360o.
Step 3 Grasp the handle and pull the port adapter (2) from the router, about halfway out of its slot. If you are removing a
blank port adapter, pull the blank port adapter completely out of the chassis slot.
Step 4 With the port adapter halfway out of the slot, disconnect all cables from the port adapter. After disconnecting the
cables, pull the port adapter from its chassis slot.
Caution The port adapter must slide into the slot guides (3) close to the chassis lid. Do not allow the port adapter
components to come in contact with the system board or the port adapter could be damaged.
Step 5 To insert the port adapter, carefully align the port adapter carrier in the slot guides (3), and slide the new port adapter
halfway into the chassis.
Step 6 Connect all required cables to the port adapter. After connecting all required cables, carefully slide the port adapter all
the way into the slot until the port adapter is seated.
Step 7 After the port adapter is properly seated, turn and secure the port adapter latch in the upright, locked position (1).
Tighten the screw to ensure the port adapter remains firmly in place.
Also see the appropriate port adapter documentation at:
http://www.cisco.com/univercd/cc/td/doc/product/core/7401port_adp/index.htm.

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4 Rack-Mount the Router
This section provides information for rack-mounting the router.
Attach the Rack-Mount Brackets—Chassis Front-Mounted
Figure 7 Attaching the Rack-Mount Brackets to the Front of the Chassis
Depending on how the rack-mount brackets are attached to the chassis, the chassis either protrudes from the rack or is recessed
in the rack.
Step 1 Locate the rack-mount and cable-management brackets and screws and a Number 2 Phillips screwdriver.
Step 2 Align the rack-mount bracket (1) to the side of the router. Depending on which set of rack-mount bracket holes you
choose to use to attach the rack-mount bracket to the router, the chassis will either be recessed in the rack, or protrude
from the rack.
Step 3 Insert and tighten the two screws (2). Repeat Steps 1 and 2 on the other side of the router.
Step 4 To install the cable-management bracket, see page 11. If you are not installing the cable-management bracket, skip to
the “Four-Post Rack Installation” section on page 15 or the “Two-Post Rack Installation” section on page 16 for
rack-mount instructions.
1Rack-mount bracket 24 screws, 8-18 x .37 in., for use with a 19-inch rack
4 screws, 8 x .375 in., for use in a 21–23-inch rack
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Attach the Rack-Mount Brackets—Chassis Rear-Mounted
Figure 8 Attaching the Rack-Mount Brackets to the Rear of the Chassis
Depending on how the rack-mount brackets are attached to the chassis, it either protrudes from the rack or is recessed in the
rack.
Step 1 Locate the rack-mount brackets and screws and a Number 2 Phillips screwdriver.
Step 2 Align the rack-mount bracket (1) to the side of the router and insert and tighten the screws (2). Depending on which
set of holes on the rack-mount bracket that you use, the router will either be recessed in the rack or protrude from the
rack.
Note To use the cable-management bracket with the Cisco 7401ASR router rear-mounted, you must purchase a second
rack-mount kit, attach a rack-mount bracket to the left front of the chassis, and attach the cable-management bracket
to it. See page 14 for cable-management bracket installation instructions.
Go to the “Four-Post Rack Installation” section on page 15 or the “Two-Post Rack Installation” section on page 16.
1Rack-mount bracket 24 screws, 8-18 x .37 in., for use with a 19-inch rack
4 screws, 8 x .375 in., for use in a 21–23-inch rack
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Attach the Cable-Management Bracket
Figure 9 Attaching the Cable-Management Bracket
Step 1 Align the cable-management bracket (1) to the rack-mount bracket on the left side of the Cisco 7401ASR router.
Step 2 Using a Phillips screwdriver and the M4 x 20-mm screw (2), thread and tighten the screw to the cable-management
bracket.
Go to the “Four-Post Rack Installation” section on page 15 or the “Two-Post Rack Installation” section on page 16.
1Cable-management bracket 2M4 x 20-mm screw
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Four-Post Rack Installation
Figure 10 Installing the Cisco 7401ASR Router in a Four-Post Rack
Note Inner clearance (the width between the inner sides of the two posts or rails) must be at least 17.3 inches (43.9 cm) The
height of the chassis is 1.72 inches (4.37 cm). Airflow through the chassis is from front to back.
Step 1 Make sure that the port adapter latch is in the locked position and the screw is tightened.
Step 2 Make sure the rack brakes are locked or the rack is stabilized.
Step 3 Position the router so the front is closest to you and lift it carefully into the rack. To prevent injury, avoid any sudden
twists or moves.
Step 4 Slide the chassis into the rack, pushing it back until the brackets meet the mounting strips or posts on both sides of the
rack.
Step 5 Keeping the brackets flush against the posts or mounting strips, align the holes in the brackets with the holes on the
rack or mounting strip.
Step 6 For each bracket, insert and tighten two 12-24 x 0.5-inch screws (3) to the rack.
1Four-post rack 3Four 12-24 x 0.5-inch screws
2Screw hole for cable-management bracket
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Two-Post Rack Installation
Figure 11 Installing the Cisco 7401ASR Router in a Two-Post or Telco Rack
Note Inner clearance (the width between the inner sides of the two posts or rails), must be at least 17.3 inches (43.9 cm) The
height of the chassis is 1.72 inches (4.37 cm). Airflow through the chassis is from front to back.
Step 1 Make sure that the port adapter latch is in the locked position and the screw is tightened.
Step 2 Make sure the rack brakes are locked or the rack (1) is stabilized.
Step 3 Position the router so the front is closest to you and lift it carefully into the rack. To prevent injury, avoid any sudden
twists or moves.
Step 4 Slide the chassis into the rack, pushing it back until the brackets meet the mounting strips or posts on both sides of the
rack.
Step 5 Keeping the brackets flush against the posts or mounting strips, align the holes in the brackets (3) with the holes on the
rack or mounting strip.
Step 6 For each bracket, insert and tighten two 12-24 x 0.5-inch screws (3) to the rack.
1Two-post or telco-type rack 3Four 12-24 x 0.5-inch screws
2Screw hole for cable-management bracket
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Chassis Ground Connection Installation
Figure 12 Attaching the Grounding Lug and Wire to the Chassis
Note The grounding lug and Phillips screws are not available from Cisco Systems. Get the grounding lug from an
electrical-connector vendor and the screws from a hardware vendor. See Page 4 for the parts needed.
Step 1 Locate the chassis ground connector (1) on the rear of your router chassis.
Step 2 Use the wire stripper to strip one end of the 6-AWG wire approximately 0.75 inches (19.05 mm).
Step 3 Insert the 6-AWG wire (4) into the wire receptacle on the grounding lug.
Step 4 Use the crimping tool to carefully crimp the wire receptacle around the wire; this step is required to ensure a proper
mechanical connection.
Step 5 Insert the two screws (3) through the holes in the grounding lug (2).
Step 6 Use the Number 2 Phillips screwdriver to carefully tighten the screws until the grounding lug is held firmly to the
chassis. Do not overtighten the screws.
Step 7 Connect the opposite end of the grounding wire to the appropriate grounding point at your site to ensure an adequate
chassis ground.
1Chassis ground connector 3Screws
2Grounding lug 4Wire
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5 Connect the Router to the Network
This section provides information about cables and ports and attaching the router to the network.
Figure 13 Attaching the Console and Auxiliary Port Cables
Console and Auxiliary Port Cable Connections
Note Both the console and auxiliary ports are asynchronous serial ports; any devices connected to these ports must be capable
of asynchronous transmission. The DCE-mode console port is for connecting a console terminal and the DTE-mode
auxiliary port is for connecting a modem or other DCE device (such as a CSU/DSU or other router) to your router.
Step 1 Before connecting a terminal to the console port, configure the terminal to match the router console port as follows:
9600 baud, 8 data bits, no parity, 2 stop bits (9600 8N2).
Step 2 Use an auxiliary and console port cable. (An auxiliary port and console port cable and adapter kit is available from
Cisco Systems—Product Number ACS-2500ASYN=.) Use the console cable to connect the terminal to the console port.
After you establish normal router operation, you can disconnect the terminal.
Note You must supply your own interface cable between the auxiliary port and the equipment you are connecting. For
console and auxiliary port pinouts, see the online Cisco 7401ASR Installation and Configuration Guide.
Gigabit Ethernet and Fast Ethernet Port Connections
The Cisco 7401ASR router has two native 10/100/1000-Mbps Ethernet interfaces. Each interface consists of two physical ports,
an RJ-45 media port and a GBIC media port. The RJ-45 media ports provides 10/100-Mbps connectivity while the GBIC media
ports provides 1000-Mbps connectivity.
Note The RJ-45 media is not capable of 1000 Mbps. This is only available via the Gigabit Ethernet GBIC media.
Note Any two of the four Ethernet ports may be used at the same time.
1Auxiliary port 4Cable to modem or DCE
2Console port 5Cable to console terminal or DTE
3RJ-45 connector
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For more information, see the online Cisco 7401ASR Installation and Configuration Guide.
Figure 14 Gigabit Ethernet and Fast Ethernet/Ethernet Port Identification
Fast Ethernet RJ-45 Connections
Figure 15 Attaching the Fast Ethernet Cables
Intra-Building Lightning Protection
Shielded cables which are grounded at both ends are required to be used on the 10/100 Ethernet port in order to be in compliance
with requirement R4-11 in GR-1089-Core for a Central Office environment. This is not a requirement for customer premise
installations.
Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage
(TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports
both use RJ-45 connectors. Use caution when connecting cables.
To identify the RJ-45 cable type, hold the two ends of the cable next to each other so you can see the colored wires inside the
ends. The straight-through wire type has colored wires in the same sequence at both ends. In the crossover wire type, the first
colored wire at the far left is the third colored wire at the other end. The second colored wire at the far left is the sixth colored
wire at the other end.
Attach RJ-45 Ethernet cables to the appropriate connector.
1Gigabit Ethernet (GBIC) port 0 3Fast Ethernet/Ethernet (100 Mbps) port 1
2Fast Ethernet/Ethernet (100 Mbps) port 0 4Gigabit Ethernet (GBIC) port 1
1Fast Ethernet/Ethernet port 0—RJ-45 connector 3Fast Ethernet/Ethernet cables
2Fast Ethernet/Ethernet port 1—RJ-45 connector
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Note Both native Fast Ethernet/Ethernet ports and Gigabit Ethernet ports are reported as GE0/0 and GE0/1 in software. You
must use the media-type command to select which media type you want to use before you configure these ports. See
“Configure the Native Gigabit Ethernet and Fast Ethernet/Ethernet Interfaces” section on page 28.
GBIC Cabling and Connection Equipment
The Gigabit Interface Converter (GBIC) port is a 1000-Mbps optical interface in the form of an SC-type duplex port that
supports IEEE 802.3z interfaces compliant with the 1000BASEX standard. Gigabit Interface Converter models WS-G5486 or
GBIC-SX=, WS-G5484 or GBIC-LX/LH=, and WS-G5487 or GBIC-ZX-SM= are supported in the Cisco 7401ASR router. For
cabling distances, specifications, and other information, see the online Cisco 7401ASR Router Installation and Configuration
Guide at http://www.cisco.com/univercd/cc/td/doc/product/core/7401/7401icg/index.htm.
Note All Gigabit Ethernet GBIC ports have SC-type connectors.
Warning B ecause invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid
exposure to laser radiation and do not stare into open apertures.
Warning Class 1 laser product.
Warning Class 1 LED product.
Figure 16 Inserting the Gigabit Ethernet Cables into the GBIC
Note There is no support for copper-based GBICs (1000BASET) as these do not conform to the GBIC standard and have not
been validated by Cisco.
Step 1 Remove the GBIC plug.
1To external 1000BASEX network 5RX (GBIC port 0)
21 duplex connector (TX and RX) 6TX (GBIC port 0)
3To external 1000BASEX network 7GBIC port 1
42 simplex connectors
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