Cisco Systems 7401 Network Router User Manual
Contents
1. If you change from the GBIC to the rj 45 media type you must set speed and duplex after you have executed the media type command to ensure the interface will operate in the correct mode The media type GBIC mode will always default to 1000 M bps full duplex operation as this is the only configuration that is supported in this mode Any speed or duplex commands are ignored while using this media type even if present in the config for example show running config Debug Cisco 10S provides two commands to provide information on your interfaces show interface GigabitEthernet 0 X where X is either 0 or 1 and show controllers GigabitEthernet 0 X where X is either 0 or 1 The output of the show interface command is useful for determining the current operating mode of the interface speed duplex media type and the current interface statistics The output of the show controller command displays more information specific to the Cisco 7401ASR router Gigabit Ethernet interface For example it shows the detected link status speed and duplex and also determines the current status of autonegotiation and the link partners abilities if it is an autonegotiation capable interface The show controller command also displays the current operating state of the driver and the Ethernet controller hardware The show controller command is a very powerful debugging aid especially for Cisco engineers should you need help in debugging a problem If you2. 95134 1706 168 Robinson Road USA 1101 CH Amsterdam USA 22 01 to 29 01 www cisco com The Netherlands www cisco com Singapore 068912 Tel 408 526 4000 Wwww europe cisco com Tel 408 526 7660 www cisco com 800 553 NETS 6387 Tel 310 20357 1000 Fax 408 527 0883 Tel 65 6317 7777 Fax 408 526 4100 Fax 310203571100 Fax 65 6317 7799 Cisco Systems has more than 200 offices in the following countries Addresses phone numbers and fax numbers are listed on the Cisco Web site at www cisco com go offices Argentina Australia e Austria Bdgium Brazil Bulgaria Canada Chile e China PRC Colombia Costa Rica Croatia e Czech Republic e Denmark Dubai UAE Finland France e Germany Greece Hong Kong SAR Hungary India Indonesa Irdand Isad Italy Japan Korea Luxembourg Malaysia M exico TheN etherlands New Zealand Norway Peru Philippines e Poland Portugal e Puerto Rico e Romania Russia Saudi Arabia Scotland Singapore Slovakia Slovenia South Africa Spain e Sweden Switzerland Taiwan Thailand Turkey Ukraine United Kingdom United States e Venezuela Vietnam Zimbabwe CCVP the Cisco logo and the Cisco Square Bridge logo are trademarks of Cisco Systems Inc Changing the Way We Work Live Play and Learn is a service mark of Cisco Systems Inc and Access Registrar Aironet BPX Catalyst CCDA CCDP CCIE CCIP CCNA CCNP CCSP Cisco the Cisco Certified Internetwor
3. back until the brackets meet the mounting strips or posts on both sides of the rack Step5 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 Step6 For each bracket insert and tighten two 12 24 x 0 5 inch screws 3 to the rack 15 Tw o Post Rack Installation Figure 11 Installing the Cisco 7401ASR Router in a Two Post or Telco Rack 1 Two post or telco type rack 3 Four 12 24 x 0 5 inch screws 2 Screw hole for cable management bracket N 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 Step1 Make sure that the port adapter latch is in the locked position and the screw is tightened Step2 Make sure the rack brakes are locked or the rack 1 is stabilized Step3 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 Step4 Slide the chassis into the rack pushing it back until the brackets meet the mounting strips or posts on both sides of the rack Step5 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 Step6 For each bracket insert and
4. customer support services Access the Cisco Product Catalog at this URL http w ww 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 H andbook Internetworking Troubleshooting Guide and the Internetworking D esign 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 w ww 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 M agazine 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 privateinternets and intr
5. have any problems with your Gigabit Ethernet interfaces you will need to provide this information to Cisco for analysis 29 Reset the Interface Should you havea problem with your interface and wish to try and reset it use the command clear interface GigabitEthernet 0 X where X is either 0 or 1 Clear Counters Interface counters may be cleared reset by using the command clear counters GigabitEthernet 0 X where X is either 0 or 1 This will not reset the interface Configure Port Adapter Interfaces Following are the steps for configuring interfaces to allow communication over a LAN or WAN To configure the interface parameters you need your interface network addresses and subnet mask information Consult with your network administrator for this information Configure ATM Interfaces In the following example an ATM interface in slot 1 is configured for an ATM LAN using IP Follow these steps to configure an ATM interface Step 1 Using your own addresses and mask at the setup prompts respond to the prompts as follows Configuring interface parameters Configuring interface ATM1 0 Is this interface in use yes Configure IP on this interface yes IP address for this interface 1 1 1 10 Number of bits in subnet field 0 Class C network is 1 1 1 0 0 subnet bits mask is 24 Step2 Determine if you are going to enable IPX on this interface if you are enter the unique IPX network number Configure IPX on
6. this interface no yes IPX network number 2 Step3 If you are using AppleTalk on the interface enter yes Enter yes to configure for extended AppleTalk networks and then enter the cable range number Enter the zone name and any other additional zones that are associated with your local zone Configure AppleTalk on this interface no yes Extended AppleTalk network no yes AppleTalk starting cable range 0 Step4 Save your settings to NVRAM See the Save the Running Configuration to NVRAM section on page 33 If you do not save the configuration settings that you created in the router using configuration mode and the setup facility your configuration will be lost the next time you reload the router Note If additional ATM interfaces are available in your system you are prompted for their configurations as well 30 Configure Fast Ethemet Interfaces In the following example a Fast Ethernet interfacein slot X is configured for a Fast Ethernet LAN using IP Follow these steps to configure Fast Ethernet interfaces Step 1 Step 2 Step 3 Step 4 Using your own addresses and mask at the setup prompts respond to the prompts as follows Configuring interface parameters Configuring interface FastEthernet1 0 Is this interface in use yes Use the 100 Base TX RJ 45 connector yes Operate in full duplex mode no Configure IP on this interface yes IP address for this interface 1 1 1 20 Numb
7. 7 Attaching the Mode Conditioning Patch Cord 57011 1 Beige color identifier 6 Multimode bar 2 To GE interface 7 Single mode bar 3 RX 8 Offset 4 ITX 9 iTo cable plant 5 Blue color identifier Step1 Attach the patch cord to the SC type receptacle on the GBIC 2 Step2 Attach thenetwork ends of your patch cord to the appropriate 1000BASEX equipment in your building cable plant 9 Note Ensure that you connect the TX and RX ports on one end of the patch cord to the RX and TX ports respectively on the other end Connect TX to RX and RX to TX A mode conditioning patch cord can be used with the GBIC LX LH to allow reliable laser transmission between the single mode laser source on the GBIC and a multimode optical fiber cable 21 Port Adapter Cable Connections The instructions for connecting the cables for each port adapter installed in the Cisco 7401ASR router are in the respective online note for each port adapter The documents are available on the Documentation CD ROM and on Cisco com at http w ww cisco com univercd cc td doc product core 7200vx portadpt index htm Also see the release notes for any information about a specific port adapter Release notes are found at http w ww cisco com univercd cc td doc product softw are index htm Alarm Port Connection Figure 18 Connecting the Alam Port Cable 57725 1 Alarm port Connect the dry relay alarm port cable connector t
8. Cisco SYSTEMS Cisco 7401ASR Router Documentation and Resources Prepare for Installation Install the Parts Rack M ount the Router Connect the Router to the Network Connect Power to the Router Configure the Router ON AU PWD B Obtain Technical Assistance Quick Start Guide Y 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 amp 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 7401licg index htm For other documentation see the following online documents that list other documentation and provide links to the documents e Cisco 7401 Router Documentation M aster Index at http w ww cisco com univercd cc td doc product core 7401 013514 htm e Cisco 7401 Router Port Adapter Documentation M aster Index at http w ww cisco com univercd cc td doc product core 7401 013533 htm Cisco 7401 Router Troubleshooting M aster ndex T his document provides links to troubleshooting documentation TAC Tech Notes and troubleshooting tools and utili
9. IOS tm 7400 Software C7400 JS M Version 12 2 Copyright c 1986 2001 by cisco Systems Inc Compiled Fri 19 May 01 13 12 by Biff Image text base 0x60008960 data base 0x617CA000 cisco 7401ASR NSE processor revision A with 245760K 16384K bytes of memory Processor board ID 4294967295 R7000 CPU at 375Mhz Implementation 39 Rev 3 3 256KB L2 2000KB L3 Cache 1 slot ASR midplane Version 2 0 Last reset from power on Bridging software X 25 software Version 3 0 0 SuperLAT software copyright 1990 by Meridian Technology Corp TN3270 Emulation software PXF processor tmc has been reset 8 Ethernet IEEE 802 3 interface s 2 Gigabit Ethernet IEEE 802 3 interface s 509K bytes of non volatile configuration memory 64256K bytes of ATA PCMCIA card at slot 0 Sector size 512 bytes 8192K bytes of Flash internal SIMM Sector size 256K Press RETURN to get started 26 Step 2 Step 3 Step 4 Step 5 Step 6 N Note Thefirst two sections of the configuration script the banner and the installed hardware appear only at initial system startup On subsequent uses of the setup command facility the script begins with a System Configuration Dialog as shown in the following example System Configuration Dialog At any point you may enter a question mark for help Use ctrl c to abort configuration dialog at any prompt Default settings are in square brackets When asked if you want to enter the i
10. Step3 PlugtheAC power supply cable into the AC power source Connect DC Input Power Note Thecolor coding of the DC input power supply leads depends on the color coding of the DC power source at your site M ake certain the lead color coding you choose for the DC input power supply matches lead color coding used at the DC power source A Warning Before completing any of the follow ing steps and to prevent short circuit or shock hazards ensure that pow er is removed from the DC circuit To ensure that all pow er 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 Step1 At the rear of the router check that the power switch is in the off O position 23 Step 2 Ensurethat no current is flowing through the DC power supply leads 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 Step3 Using a wire stripper strip approximately 0 55 inch 14 mm from the V and leads Figure 21 Attaching the Wires to the DC Plug and the DC Plug to the DC Connector 1 DC plug 4 Single DC power supply connector 2 jLead 5 Dual DC power supply connectors 3 and embossed on connector Step 4 T
11. ables 1 Auxiliary port 4 Cableto modem or DCE 2 Console port 5 Cableto console terminal or DTE 3 RJ 45 connector Console and Auxiliary Port Cable Connections N 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 DT E mode auxiliary port is for connecting a modem or other DCE device such as a CSU DSU or other router to your router Step1 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 8N 2 Step2 Usean auxiliary and console port cable An auxiliary port and console port cable and adapter kit is available from Cisco Systems Product N umber ACS 2500ASY N 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 G uide Gigabit Ethernet and Fast Ethernet Port Connections TheCisco 7401ASR router hastwo native 10 100 1000 M bps Ethernet interfaces Each interface consists of two physical ports an RJ 45 m
12. anets You can access the Internet Protocol Journal at this URL http www cisco com en US about acl123 acl47 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 w ww cisco com en US learning le31 learning_recommended_training_list html 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 A Warning Only trained and qualified personnel should install replace or service this equipment A Warning Read the installation instructions before you connect the system to its power source A Warning This unitis intended for installation in restricted access areas A restricted access area is where access can only 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 an
13. ate LED flashes when there is No LED Label LED Color the LED is traffic 1 GBIC 0 ENABLE GBIC ENABLE 0 Green ON No remains constantly on 2 LINK GBIC LINK 0 Green Yes 3 FE O LINK FE LINK 0 Green Yes 4 100 M bps FE 0 Green ON No remains constantly on 5 GBIC 1 ENABLE GBIC ENABLE 1 Green No remains constantly on 6 LINK GBIC LINK 1 Green ON Yes 7 FE 1LINK FE LINK 1 Green Yes 8 100 M bps FE 1 Green ON No remains constantly on 9 STATUS System Status Green ON No remains constantly on 10 COM PACT FLASH CompactFlash Disk Green ON if the CompactFlash No remains constantly on Disk is inserted and functioning Step 3 During the boot process observe the system LEDs The STATUS LED comes on immediately as amber then turns to Step 4 green when the IOS is booted Port adapter LEDs go on and off irregularly Observe the initialization process The LEDs on the port adapter behave differently most flash on and off The ENABLED LED on each port adapter goes on when initialization is completed and the console screen displays a script and system banner 7 Configure the Router Perform a Basic Configuration Using the Setup Facility If you do not plan to useAutolnstall do not connect the router s serial WAN cableto the channel service unit data service unit CSU DSU If the WAN cable is not connected the router boots from Flash memory and goes autom
14. atically into the setup facility You can run the setup facility any time you are at the enable prompt by entering the setup command If the serial WAN cable is connected to the CSU DSU and the router does not have a configuration stored in NVRAM the router attempts to run Autolnstall at startup The router may take several minutes to determine that A utolnstall is not set up to a remote TCP IP host Once the router determines that Autolnstall is not configured it defaults to the setup facility Configure Global Parameters When you first start the setup program you must configure the global parameters T hese parameters are used for controlling system wide settings Complete the following steps to enter the global parameters Step1 Connect a console terminal to the console port and then boot the router The system boots from Flash memory The following information appears after about 30 seconds When you see this information you have successfully booted your router Restricted Rights Legend Use duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph c of the Commercial Computer Software Restricted Rights clause at FAR sec 52 227 19 and subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS sec 252 227 7013 cisco Systems Inc 170 West Tasman Drive San Jose California 95134 1706 Cisco Internetwork Operating System Software
15. ations After you haveinstalled your Cisco 7401ASR router hardwareand minimally configured the system you might need to perform more complex configurations which are beyond the scope of this publication For specific information on system and interface configuration refer to the modular configuration and modular command reference publications in the Cisco 10S software configuration documentation set that corresponds to the software release installed on your Cisco hardware These publications contain additional information on using the configure command Replace or Recover a Lost Password See the Cisco 7401ASR Installation and Configuration Guide Chapter 3 Starting and Configuring for instructions It is possible to recover the enable or console login password The enable secret password is encrypted and must be replaced with a new enable secret password Troubleshooting Information For system start up troubleshooting information see the online Cisco 7401ASR Installation and Configuration G uide at http w ww cisco com univercd cc td doc product core 7401 7401licg index htm 34 8 Obtain Technical Assistance Cisco provides Cisco com which includes the Cisco Technical Assistance Center TAC website as a starting point for all technical assistance Customers and partners can obtain online documentation troubleshooting tips and sample configurations from the Cisco TAC website Cisco com registered users have complete access to th
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17. d 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 O ne 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 N umber 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 wirereceptacle large enough to accept a 6 AWG multistrand copper wire Two Phillips machine screws with locking washers M 5 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
18. e DIMM Use the notches on the DIM M to align the DIMM in the DIMM socket before inserting it Step5 Locate the notches and align the DIMM with the socket before inserting it Step6 Gently insert the new DIMM taking care not to damage the pins on the edge of theDIMM Step7 Press the spring latches to lock the DIM M in place Step8 Replace the cover lower it onto the chassis and push the cover toward the rear of the chassis to lock it in place Step9 Replace and tighten the four cover screws Step 10 Replace the Cisco 7401ASR router in the rack See the Rack M ount 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 havea DC power supply attach the V and V leads to the power supply Repeat this step if you havea 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 w ww cisco com univercd cc td doc product core 7401 7401licg 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 1 Port adapter
19. e 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 19 N Note Both native Fast Ethernet Ethernet ports and Gigabit Ethernet ports are reported as GE0 0 and GEO 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 N ative 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 M bps optical interface in the form of an SC type duplex port that supports IEEE 802 3z interfaces compliant with the LOOOBASEX standard Gigabit Interface Converter models WS G5486 or GBIC SX WS G5484 or GBIC LX LH and WS G5487 or GBIC Z X 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 7401
20. e prompts as follows Configuring interface parameters Configuring interface serial 1 0 Is this interface in use yes Configure IP on this interface yes IP address for this interface 1 1 1 30 Number of bits in subnet field 0 Class A network is 1 1 1 0 0 subnet bits mask is 24 Determine if you are going to enable IPX on this interface if you are enter the unique IPX network number Configure IPX on this interface no yes IPX network number 2 31 Step 3 Step 4 If you are using AppleTalk on the interface enter yes Enter yes to configure for extended AppleTalk networks and then enter the cable range number Enter the zone name and any other additional zones that are associated with your local zone Configure AppleTalk on this interface no yes Extended AppleTalk network no yes AppleTalk starting cable range 0 Save your settings to NVRAM See the Save the Running Configuration to NVRAM section on page 33 If you do not save the configuration settings that you created in the router using configuration mode and the setup facility your configuration will be lost the next time you reload the router N Note If additional synchronous serial interfaces are available in your system you are prompted for their configurations as well The following sample display includes a continuous listing of all interface configuration parameters selected for ATM Fast Ethernet and synchron
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22. edia port and a GBIC media port The RJ 45 media ports provides 10 100 M bps connectivity while the GBIC media ports provides 1000 M bps connectivity Note TheRJ 45 media is not capable of 1000 M bps 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 18 For more information see the online Cisco 7401ASR Installation and Configuration Guide Figure 14 Gigabit Ethemet and Fast Ethemet Ethemet Port Identification 1 Gigabit Ethernet GBIC port 0 3 Fast Ethernet Ethernet 100 M bps port 1 2 Fast Ethernet Ethernet 100 M bps port 0 4 Gigabit Ethernet GBIC port 1 Fast Ethernet RJ 45 Connections Figure 15 Attaching the Fast Ethemet Cables 1 Fast Ethernet Ethernet port O RJ 45 connector 3 Fast Ethernet Ethernet cables 2 Fast Ethernet Ethernet port 1 RJ 45 connector Intra Building Lightning Protection Shielded cables which are grounded at both ends are required to beused on the 10 100 Ethernet port in order to bein compliance with requirement R 4 11 in GR 1089 Core for a Central O ffice environment This is not a requirement for customer premise installations A Warning To avoid electric shock do not connect safety extra low voltage SELV circuits to telephone netw ork voltage TNV circuits LAN ports contain SELV circuits and WAN ports contain TNV circuits Some LAN and WAN ports both us
23. er of bits in subnet field 0 Class C network is 1 1 1 0 0 subnet bits mask is 24 Determine if you are going to enable IPX on this interface if you are enter the unique IPX network number Configure IPX on this interface no yes PX network number 2 If you are using AppleTalk on the interface enter yes Enter yes to configure for extended AppleTalk networks and then enter the cable range number Enter the zone name and any other additional zones that are associated with your local zone Configure AppleTalk on this interface no yes Extended AppleTalk network no yes AppleTalk starting cable range 0 Save your settings to NVRAM See the Save the Running Configuration to NVRAM section on page 33 If you do not save the configuration settings that you created in the router using configuration mode and the setup facility your configuration will be lost the next time you reload the router Note If additional Ethernet interfaces are available in your system you are prompted for their configurations as well Configure Synchronous Serial Interfaces Synchronous serial interfaces are configured to allow connection to WAN s through a CSU DSU In the following example a synchronous serial interface in slot X is configured for a WAN connection using IP Follow these steps to configure synchronous serial interfaces Step 1 Step 2 Using your own addresses and mask at the setup prompts respond to th
24. ews 2 Repeat Steps 1 and 2 on the other side of the router Step4 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 12 Attach the Rack M ount Brackets Chassis Rear M ounted Figure 8 Attaching the Rack Mount Brackets to the Rear of the Chassis Gr Crt E qu N 8 8 1 Rack mount bracket 2 4 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 Depending on how the rack mount brackets are attached to the chassis it either protrudes from the rack or is recessed in the rack Step1 Locate the rack mount brackets and screws and a N umber 2 Phillips screwdriver Step2 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 Installat
25. ion section on page 15 or the Two Post Rack Installation section on page 16 13 Attach the Cable M anagement Bracket Figure 9 Attaching the Cable Management Bracket 1 Cable management bracket 2 M4x 20 mm screw Step1 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 M 4 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 14 Four Post Rack Installation Figure 10 Installing the Cisco 7401ASR Router in a Four Post Rack Pe 1 1 Four post rack 3 Four 12 24 x 0 5 inch screws 2 Screw hole for cable management bracket N 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 Step1 Make sure that the port adapter latch is in the locked position and the screw is tightened Step2 Makesuretherack brakes are locked or the rack is stabilized Step3 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 Step4 Slide the chassis into the rack pushing it
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27. latch 3 Port adapter slot guide 2 Port adapter partially removed 4 Ground for ESD wrist strap banana jack A 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 10 Step1 Usean ESD wrist strap to ground yourself to the router A banana jack ground is to the left of the power switch Step2 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 360 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 A 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 Step5 To insert the port adapter carefully align the port adapter carrier in the slot guides 3 and slide the ne
28. licg index htm Note All Gigabit Ethernet GBIC ports have SC type connectors A Warning Because invisible laser radiation may be emitted from the aperture of the port w hen no fiber cable is connected avoid exposure to laser radiation and do not stare into open apertures A Warning Class 1 laser product A Warning Class 1 LED product Figure 16 Inserting the Gigabit Ethemet Cables into the GBIC 1 To external LOOOBASEX network 5 RX GBIC port 0 2 1 duplex connector TX and RX 6 TX GBIC port 0 3 iTo external 1OOOBASEX network 7 GBIC port 1 4 2 simplex connectors N Note Thereisno support for copper based GBICs 1000BASET as these do not conform to the GBIC standard and have not been validated by Cisco Step1 Remove the GBIC plug 20 Step 2 Attach the appropriate optical fiber cable directly to the SC type port on the GBIC You can use either simplex or duplex connectors for most devices Two cables are required for simplex connectors one cable for transmit TX and one for receive RX One cable that has both TX and RX connectors is required for duplex connectors A Caution If you plan to usea GBIC LX LH at distances greater than 984 25 feet 300 meters over 50 125 micron or 62 5 125 micron multimode fiber to prevent data transmission problems you must use the mode conditioning patch cord Attach a Mode Conditioning Patch Cord Figure 1
29. movethe Cisco 7401ASR router from the rack if it is rack mounted Figure 3 Removing the Screws and Loosening the Cover t t oOo o 1 Cover screws 2 Cover removal slot and screwdriver Step 4 Remove the four screws holding the cover to the chassis Note If needed usea Phillips recess flat head screw M 3 5 x 6 mm long type B thread steel with black zinc coating as a replacement Step5 Insert a flat blade screwdrivers in each of the side cover removal slots Step6 Push the screwdriver blade against the cover latches to release the cover as shown in Figure 3 T he cover moves forward about one quarter inch Figure 4 Removing the Cover Step7 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 EEL ay 66284 1 Latch on DIMM socket 3 Notch 2 DIMM Step1 Attach an ESD preventative wrist strap between you and an unpainted router surface Step2 LocatetheDIMM Step3 Press both spring latches outward to release the DIM M See Figure 5 Step4 Gently pull the DIM M free from the DIM M socket taking care not to touch the pins that insert into the socket Place the DIMM in an anti static bag A Caution Forcing the DIMM into the socket can damage th
30. nitial configuration dialog and see the current interface summary enter yes or press Return Would you like to enter the initial configuration dialog yes First would you like to see the current interface summary yes In the following example the summary shows a Cisco 7401ASR router at first time startup that is nothing is configured Any interface listed with OK value NO does not have a valid configuration Interface IP Address OK Method Status Protocol ATM1 0 unassigned NO unset down down FastEthernet1 0 unassigned NO unset down down Choose which protocols to support on your interfaces For Internet Protocol IP only installations you can accept the default values for most of the questions A typical configuration using IP IPX and AppleTalk follows and continues through Step 5 Configuring global parameters Enter host name Router Enter enable secret enable and virtual terminal passwords The enable secret password is a one way cryptographic secret password used instead of the enable password when it exists Enter enable secret barney The enable password is used when there is no enable secret password and when using older software and some boot images Enter enable password betty Enter virtual terminal password fred The Simple N etwork M anagement Protocol SN M P is the most widely supported open standard for network management It provides a means to access and set configuration and run time parameter
31. o determine which lead to connect to which screw in the DC plug align the DC plug 1 with the DC connector 4 5 in the chassis as shown in the illustration above Do not insert the plug in the connector N otice the symbols A embossed on the connector 3 Use the symbols and the orientation of the plug to guide you when inserting the leads into the plug Step5 Loosen the screws in the DC plug 1 insert the V and V leads and tighten the screws Step6 Insert the DC plug 1 into the DC connector 4 in the chassis Step 7 Repeat Step 5 and Step 6 if you have a dual DC power supply 5 Step8 Switch the circuit breaker to the ON position Observe System Startup and Performing a Basic Configuration Check conditions prior to system startup Step 1 Check that all hardware parts and cables are securely attached to the chassis Step 2 Check that port adapter configuration information is available if needed Step 3 Check that a CompactFlash Disk is installed Step4 Check that the console terminal is turned on 24 Start the Router Step 1 Step 2 Place the power switch in the on position Listen for the fans they should be operating as soon as power is turned on AS Note After powering off the router wait at least 30 seconds before powering it on again The following table provides information about the LEDs as the system starts Figure 22 Identifying LEDs and LED Status In the Power Up st
32. o select the media type either Gigibit Ethernet gbic or Fast Ethernet Ethernet rj45 Step1 To beableto usea particular media port use Cisco 10 S to select the media type This is done by using the media type interface command media type gbic rj45 Example interface GigabitEthernet 0 0 media type rj45 end Step2 After changing the media type configure the speed and duplex to appropriately match the new interface characteristics Changing the speed and duplex of a Cisco 7401ASR router Gigabit Ethernet interface is done using the speed and duplex interface commands Note These commands are only applicable when using the RJ 45 media speed 10 100 1000 auto duplex full half auto The following speed duplex settings are supported Media Type Speed Duplex RJ45 10 100 auto full half auto GBIC ignored 1000 ignored full By default on this interface When using the GBIC media there is also the additional negotiation auto command that is used to enable the IEEE 801 1z Gigabit Ethernet 1000 M bps autonegotiation protocol Step3 To turn the negotiation auto feature off it is on by default issue the interface command no negotiation auto This is useful for connecting to other Gigabit Ethernet equipment that does not support 802 1z autonegotiation Note The negotiation auto feature is not supported when using the media type rj 45 and will be ignored if implementation is attempted
33. o the alarm port It cannot be inserted incorrectly The dry relay alarm port operates at 50V AC DC maximum and up to 80 mA maximum Total power dissipation should not exceed 300 milliwatts The normally closed position will have from 15 to 30 ohms resistance The open position will be greater than 1 megohom Thealarm condition is the closed position This port is a switch so that the cable connector can be inserted in either orientation Cable Management Figure 19 Inserting the Cables Through the Cable Management Bracket i 57581 1 Input output cables 2 Cable management bracket If you have not already done so run the port adapter and input output cables through the cable management bracket 22 6 Connect Power to the Router This section provides instructions for attaching the power cables to the router and powering on the router A Warning This unit might have more than one power cord To reduce the risk of electric shock disconnect the two power supply cords before servicing the unit A Warning The AC power supply has double pole neutral fusing The Cisco 7401ASR router comes with either an AC or DC power supply A dual DC power supply option is available Connect AC Input Power Figure 20 Attaching the AC Power Cable 1 AC power connector 2 Power switch Step1 Check that the power switch 2 is in the off O position Step 2 Plug the power cable into the AC connector 1 on the router
34. ork number 1 32 The following configuration command script was created hostname Router enable secret 5 1 u8z3SPMYY8em 8sszhzk78p Y0O enable password betty line vty 0 4 password fred snmp server community public I ip routing no vines routing ipx routing appletalk routing no apollo routing no decnet routing no xns routing no clns routing no bridge 1 Turn off IPX to prevent network conflicts interface ATM1 0 ip address 1 1 1 10 255 0 0 1 appletalk cable range 0 0 0 0 appletalk discovery I interface FastEthernet1 0 media type 100BaseX half duplex ip address 1 1 1 20 255 0 0 2 appletalk cable range 0 0 0 0 appletalk discovery I interface serial3 0 ip address 1 1 1 30 255 0 0 3 ip route cache cbus no keepalive l router igrp 15 network 1 0 0 0 I 1 end Use this configuration yes no yes Building configuration Use the enabled mode configure command to modify this configuration Press RETURN to get started Your router isnow minimally configured and ready to use You can use the setup command if you want to modify the parameters after the initial configuration To perform more complex configurations use the configure command For information on additional interface configuration and specific system configurations refer to the modular configuration and modular command reference publications in the Cisco 10S software configuration documentation set that corresponds to the
35. ot 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 IA Ko O oO N wo 1 Port adapter slot installed port adapter shown 8 Console port 2 Port adapter latch 9 Alarm port 3 GBIC port 0 10 Ground for ESD wrist strap with banana jack 4 FE port 0 11 Power switch 5 FE port 1 12 CompactFlash Disk slot 6 GBIC port1 13 Power connector 7 Auxiliary port 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 1 Insert the CompactFlash Disk 2 Remove 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 N Note Only the CompactFlash Disk is supported in a Cisco 7401ASR router Other types of Flash Disks are not supported Thelarger the CompactFlash Disk size the longer the system boot time The CompactFlash Disk supports online insertion and removal OIR e Usethe CompactFlash Disk to
36. ous serial interfaces Configuring interface parameters Configuring interface ATM1 0 Is this interface in use yes Configure IP on this interface yes IP address for this interface 1 1 1 10 Number of bits in subnet field 0 0 Class C network is 1 1 1 0 0 subnet bits mask is 24 Configure IPX on this interface yes IPX network number 2 Configure AppleTalk on this interface no yes Extended AppleTalk network no yes AppleTalk starting cable range 0 Configuring interface FastEthernet1 0 Is this interface in use yes Use the 100 Base TX RJ 45 connector yes Operate in full duplex mode no Configure IP on this interface yes IP address for this interface 1 1 1 20 Number of bits in subnet field 0 Class C network is 1 1 1 0 0 subnet bits mask is 24 Configure IPX on this interface yes IPX network number 2 Configure AppleTalk on this interface no yes Extended AppleTalk network no yes AppleTalk starting cable range 0 Configuring interface Seriall1 0 Is this interface in use no yes Configure IP on this interface no yes Configure IP unnumbered on this interface no IP address for this interface 1 1 1 30 Number of bits in subnet field 0 Class A network is 1 0 0 0 0 subnet bits mask is 255 0 0 0 Configure IPX on this interface no yes IPX network number 2 Configure AppleTalk on this interface no yes Extended AppleTalk network no AppleTalk netw
37. rameters Enter host name Router router The enable secret is a one way cryptographic secret password used instead of the enable password when it exists Enter enable secret barney The enable password is used when there is no enable secret password and when using older software and some boot images Enter enable password betty Enter virtual terminal password fred Configure SNMP Network Management yes Community string public Configure Vines no Configure LAT no Configure AppleTalk no yes Multizone networks no yes Configure DECnet no Configure IP yes Configure IGRP routing yes Your IGRP autonomous system number 1 15 Configure RIP routing no Configure CLNS no n Configure bridging no Configure IPX no yes Configure XNS no Configure Apollo no Save your settings to NVRAM See the Save the Running Configuration to NVRAM section on page 33 If you do not save the configuration settings that you created in the router using configuration mode and the setup facility your configuration will be lost the next time you reload the router Configure the Native Gigabit Ethemet and Fast Ethemet Ethemet Interfaces Changing the Media Type SN a Note The Cisco 7401ASR router reports both the Fast Ethernet Ethernet and the Gigabit Ethernet ports as GE 0 0 and 28 GE 0 1 Before configuring either port type you must first use the media type interface command t
38. s by using the Cisco TAC website you can open a case online at this URL http w ww cisco com tac caseopen If you have Internet access we recommend that you open P3 and P4 cases online so that you can fully describe the situation and attach any necessary files 35 Cisco TAC Escalation Center The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues These classifications are assigned when severe network degradation significantly impacts business operations When you contact the TAC Escalation Center with a P1 or P2 problem a Cisco TAC engineer automatically opens a case To obtain a directory of toll free Cisco TAC telephone numbers for your country go to this URL http w ww cisco com warp public 687 Directory DirTAC shtml Beforecalling please check with your network operations center to determine the Cisco support services to which your company is entitled for example SM ART net SM ARTnet Onsite or Network Supported Accounts NSA When you call the center please have available your service agreement number and your product serial number 36 37 38 39 Cisco SYSTEMS FA Corporate H eadquarters European H eadquarters Americas H eadquarters Asia Pacific H eadquarters Cisco Systems Inc Cisco Systems International BV Cisco Systems Inc Cisco Systems Inc 170 West Tasman Drive H aarlerbergpark 170 West Tasman Drive Capital Tower San Jose CA 95134 1706 H aarlerbergweg 13 19 San Jose CA
39. s of routers and communication servers SN M P defines a set of functions that can be used to monitor and control network elements Enter yes or press Return to accept SN M P management enter no to refuse it Configure SNMP Network Management yes Community string public For the following queries do not enable VINES LAT DECnet CLNS bridging XN S or Apollo Configure Vines no Configure LAT no Configure DECnet no Configure CLNS no Configure bridging no Configure XNS no Configure Apollo no 27 Step 7 Step 8 Step 9 For the following queries enable routing on AppleTalk and IPX Configure AppleTalk no yes Multizone networks no yes Configure IPX no yes In most cases you use IP routing If you are using IP routing you must also select an interior routing protocol You can specify only one of two interior routing protocols to operate on your system using the setup facility Interior Gateway Routing Protocol IGRP or Routing Information Protocol RIP To configure IP routing enter yes the default or press Return and then select an interior routing protocol Configure IP yes Configure IGRP routing yes Your IGRP autonomous system number 1 15 The following sample display includes a continuous listing of all configuration parameters selected in Step 3 through Step 8 Only IP IPX and AppleTalk are the selected protocols for this example Configuring global pa
40. software release installed on your Cisco hardware Save the Running Configuration to NVRAM To store the configuration or changes to your startup configuration in NVRAM enter the copy running config startup config command at the router prompt Router copy running config startup config Using this command saves the configuration settings that you created in the router using configuration mode and the setup facility If you fail to do this your configuration will be lost the next time you reload the router 33 Check the Running Configuration Settings To check the value of the settings you have entered enter the show running config command at the Router prompt Router show running config To review changes you make to the configuration usethe EX EC mode show startup config command to display theinformation stored in NVRAM View Your System Configuration You can use the show version or show hardware and the show diag commands to display the system hardware the software version the names and sources of configuration files and the boot images Use the show diag command to determine what type of port adapter is installed For specific information on the show version show diag and other commands refer to the modular configuration and modular command reference publications in the Cisco 10 S software configuration documentation set that corresponds to the software release installed on your Cisco hardware Perform Complex Configur
41. store your configuration files and Cisco 1O S 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 Install the Gigabit Interface Converter A 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 A Warning Class 1 laser product A 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 GEO 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 moreinformation on Gigabit Ethernet GBICs mode conditioning patch cords cabling specifications seethe Cisco 7401 Installation and Configuration Guide Figure 2 Installing a Gigabit Ethemet GBIC 1 GBIC 4 GBIC portl 2 Alignment groove 5 Plug 3 GBIC port 0 Step1 Turn the Gigabit Ethernet Gigabit Interface Convertor GBIC 1 so the label side is up and
42. the alignment groove 2 is down Note TheGBIC is keyed so that it cannot be inserted incorrectly Step2 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 Replace the SDRAM DIMM TheSDRAM DIMM comes installed with your Cisco 7401ASR router To replace the SDRAM follow these instructions A Warning Only trained and qualified personnel should be allowed to install replace or service this equipment A 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 A 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 Step2 Removeany 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 Re
43. ties at http w ww cisco com univercd cc td doc product core 7401 013517 htm Other Useful Links For Cisco IOS Configuration documentation including release notes and feature modules see http w ww cisco com univercd cc td doc product softw are index htm Obtain Documentation Cisco provides several ways to obtain documentation technical assistance and other technical resources T hese 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 w ww cisco com univercd home home htm You can access the Cisco website at this URL http w ww cisco com International Cisco websites can be accessed from this URL http w ww cisco com public countries_languages shtm 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 5 through the Cisco Ordering tool http w ww cisco com en US partner ordering ordering_place order_ordering_tool_launch html All users can order monthly or quarterly subscriptions through the online Su
44. tighten two 12 24 x 0 5 inch screws 3 to the rack 16 Chassis Ground Connection Installation Figure 12 Attaching the Grounding Lug and Wire to the Chassis 1 Chassis ground connector 3 Screws 2 Grounding lug 4 Wire Note The grounding lug and Phillips screws are not available from Cisco Systems Get the grounding lug from an Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 electrical connector vendor and the screws from a hardware vendor See Page 4 for the parts needed Locate the chassis ground connector 1 on the rear of your router chassis Use the wire stripper to strip one end of the 6 AWG wire approximately 0 75 inches 19 05 mm Insert the 6 AWG wire 4 into the wire receptacle on the grounding lug Use the crimping tool to carefully crimp the wire receptacle around the wire this step is required to ensure a proper mechanical connection Insert the two screws 3 through the holes in the grounding lug 2 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 Connect the opposite end of the grounding wire to the appropriate grounding point at your site to ensure an adequate chassis ground 17 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 C
45. vel 3 P3 Operational performance of the network is impaired but most business operations remain functional You and Cisco are willing to commit resources during normal business hours to restore service to satisfactory levels Priority level 2 P2 Operation of an existing network is severely degraded or significant aspects of your business operations are negatively impacted by inadequate performance of Cisco products You and Cisco will commit full time resources during normal business hours to resolve the situation Priority level 1 P1 An existing network is down or there is a critical impact to your business operations You and Cisco will commit all necessary resources around the clock to resolve the situation Cisco TAC Website The Cisco TAC website provides online documents and tools to help troubleshoot and resolve technical issues with Cisco products and technologies To access the Cisco TAC website go to this URL http w w w cisco com tac All customers partners and resellers who have a valid Cisco service contract have complete access to the technical support resources on the Cisco TAC website Some services on the Cisco TAC website require a Cisco com login ID and password If you have a valid service contract but do not havea login ID or password go to this URL to register http tools cisco com R PF register register do If you are a Cisco com registered user and you cannot resolve your technical issue
46. w port adapter halfway into the chassis Step6 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 Step7 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 w ww cisco com univercd cc td doc product core 7401port_adp index htm 11 4 Rack Mountthe Router This section provides information for rack mounting the router Attach the Rack M ount Brackets Chassis Front M ounted Figure 7 Attaching the Rack Mount Brackets to the Front of the Chassis 1 Rack mount bracket 4 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 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 N umber 2 Phillips screwdriver Step2 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 Step3 Insert and tighten the two scr
47. x 375 inch screws for use in a 21 23 inch rack and one M 4 x 20 mm screw T1 channel service unit data service unit CSU D SU that converts the High Level Data Link Control H DLC synchronous serial data stream into a T1 data stream with the correct framing and ones density to connect a serial port to aT 1 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 Therouter 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 M ount Installation M ake these decisions before you begin the rack mounting tasks Decide whether or n
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