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This chapter describes how to perform a basic configuration for your Cisco uBR7246 universal broadband router. The chapter contains the following sections:
This chapter guides you through a basic Cisco uBR7246 configuration, which is sufficient for you to access your network. Complex configuration procedures are beyond the scope of this publication and can be found in the configuration publications listed in the section "If You Need More Information."
To configure the Cisco uBR7246 from a console, you need to connect a terminal to the universal broadband router's console port. Configuration requires access to the console port on the universal broadband router's I/O controller.
The Cisco Internetwork Operating System (Cisco IOS) software running the Cisco uBR7246 contains extensive features and functionality. The effective use of these features is easier if you have more information at hand. For additional information on configuring the Cisco uBR7246 universal broadband router, the following documentation resources are available:
The Cisco uBR7246 universal broadband router is administered using the Cisco command interpreter, called the EXEC. You must boot and log in to the router before you can enter an EXEC command. For security purposes the EXEC has two levels of access to commands, user EXEC mode and privileged EXEC mode.
The commands available at the user level are a subset of those available at the privileged level. Because many privileged-level EXEC commands are used to set operating parameters, you should password-protect these commands to prevent unauthorized use.
There are two commands you can use to set the password protection:
You must enter the correct password to gain access to privileged-level commands. The passwords should be different for maximum security. If you enter the same password for both during the setup script, the system will accept it, but you will receive a warning message indicating that you should enter a different password.
An enable secret password can contain from 1 to 25 uppercase and lowercase alphanumeric characters; an enable password can contain any number of uppercase and lowercase alphanumeric characters. In both cases, a number cannot be the first character. Spaces are also valid password characters; for example, "two words" is a valid password. Leading spaces are ignored, trailing spaces are recognized, and alphanumeric characters are recognized as uppercase or lowercase.
You can configure the Cisco uBR7246 using one of the procedures described in the following sections:
Follow the procedure that best fits the needs of your network configuration.
Before continuing the configuration process, check the current state of the router by entering the show version command. The show version command displays the release of Cisco IOS software that is available on the router.
The AutoInstall process is designed to configure the Cisco uBR7246 automatically after connection to your wide-area network (WAN). For AutoInstall to work properly, a Transmission Control Protocol/Internet Protocol (TCP/IP) host on your network must be preconfigured to provide the required configuration files. The TCP/IP host can exist anywhere on the network as long as the following two conditions are maintained:
This functionality is coordinated by your system administrator at the site where the TCP/IP host is located. You should not use AutoInstall unless the required files are available on the TCP/IP host. See the publications Configuration Fundamentals Configuration Guide and Configuration Fundamentals Command Reference for information about how AutoInstall works.
Complete the following steps to prepare your Cisco uBR7246 for the AutoInstall process:
Step 1 Attach the appropriate synchronous serial cable to synchronous serial interface 0 on the router.
Step 2 Turn the power switch on each power supply to the ON (|) position. (This action turns on AC power to the router.)
The router loads the operating system image from Flash memory; this process can take several minutes. If the remote end of the WAN connection is connected and properly configured, the AutoInstall process begins.
Once the AutoInstall process is completed, use the copy running-config startup-config command to write the configuration data to the router's nonvolatile random-access memory (NVRAM). Perform the following step to complete this task.
Step 3 At the # prompt enter the following command:
copy running-config startup-config
Completing this step saves the configuration settings that the AutoInstall process created to NVRAM. If you fail to do this, your configuration will be lost the next time you reload the router.
If you do not plan to use AutoInstall, do not connect the router's WAN or LAN cable to the channel service unit/data service unit (CSU/DSU). If the WAN or LAN cable is connected to the CSU/DSU and the router does not have a configuration stored in NVRAM, the router attempts to run AutoInstall at start up. The router might take several minutes to determine that AutoInstall is not set up to a remote TCP/IP host.
Once the router has determined that AutoInstall is not configured, it will default to the setup facility. If the LAN or WAN cable is not connected, the router will boot from Flash memory and go into the setup facility automatically.
When you first start the setup program, you must configure the global parameters. These parameters are used for controlling system-wide settings. Complete the following steps to enter the global parameters:
Step 1 Connect a console terminal to the console port on the I/O controller, and then boot the router.
Step 2 After booting 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
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Cisco Internetwork Operating System Software IOS (tm) 7200 Software (C7200-I-M), Version 11.3(1) [kpfjrgiu 100] Copyright (c) 1986-1998 by cisco Systems, Inc. Compiled Sun 21-Dec-97 04:10 by asdhkj cisco 7200 (R4700) processor with 22528K/10240K bytes of memory. R4700 processor, Implementation 33, Revision 1.0 (Level 2 Cache) Last reset from power-on Bridging software. SuperLAT software copyright 1990 by Meridian Technology Corp). X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. TN3270 Emulation software (copyright 1994 by TGV Inc). 4 Ethernet/IEEE 802.3 interfaces. 5 FastEthernet/IEEE 802.3 interfaces. 8 Serial network interfaces. 125K bytes of non-volatile configuration memory. 20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K). 4096K bytes of Flash internal SIMM (Sector size 256K). Configuration register is 0x0
--- System Configuration Dialog ---
At any point you may enter a questions mark '?' for help.
Default settings are in square brackets '[]'.
continue with configuration dialog? [yes/no]:
Step 3 When asked if you want to enter the initial configuration dialog and see the current interface summary, enter yes or press Return:
In the following example, the summary shows a Cisco uBR7246 at first-time startup; that is, nothing is configured.
Step 4 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 follows and continues through Step 7:
Step 5 Enter the enable secret password, the enable password, and the virtual terminal password:
barney
betty
wilma
Enter yes to accept SNMP management; enter no to refuse it:
Step 7 In all cases you will use IP routing. When 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 setup: 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:
15
Step 8 Configure your port adapter interface parameters. In this example, an 8-port Ethernet port adapter is installed in port adapter slot 1. The setup program will determine the status of all interfaces.
To configure each active interface port for IP, enter yes (the default) or press Return. For all inactive ports, the default will be no. You can press Return to accept the default.
Step 9 Configure your cable modem card interface parameters. In this example, an MC11 cable modem card is installed in cable modem card slot 3. The setup program will determine the status of all interfaces.
The configuration program displays the command interface script just created:
The following command script was created: hostname router enable secret 5 $1$f0fc$A38P/KN/9yD3sEKSt6hKQ/ enable password betty line vty 0 4 password wilma snmp-server community public ! ip routing ! interface Ethernet1/0 ip address 19.2.22.4 255.255.0.0 ! interface Ethernet1/1 shutdown no ip address ! interface Ethernet1/2 shutdown no ip address ! interface Ethernet1/3 shutdown no ip address ! interface Ethernet1/4 shutdown no ip address ! interface Ethernet1/5 shutdown no ip address ! interface Ethernet1/6 shutdown no ip address ! interface Ethernet1/7 shutdown no ip address ! interface cable 3/0 ip address 19.2.22.5 255.255.0.0 interface cable 3/1 ip address 19.2.22.6 255.255.0.0 router igrp 15 network 19.0.0.0 ! end
Step 10 When asked if you want to enter use this configuration, enter yes or press Return.
Use this configuration? [yes/no]: yes
Step 11 Save your settings to NVRAM. (Refer to the section "Saving Your Settings to NVRAM" later in this chapter.)
Following are the steps for configuring interfaces to allow communication over a local-area network (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.
Step 1 In the following example, the system is being configured for an Ethernet LAN using IP. Respond to the prompts as follows, using your own addresses and mask at the setup prompts:
yes
yes
1.1.1.10
Step 2 Determine if you are going to enable IPX on this interface; if you are, enter the unique IPX network number:
no
Step 3 Save your settings to NVRAM. (Refer to the section "Saving Your Settings to NVRAM" later in this chapter.)
If additional Ethernet interfaces are available in your system, you are prompted for their configuration as well.
Step 1 To configure serial port 0 enter yes:
yes
Step 2 Determine which protocols you want on the synchronous serial interface and enter the appropriate responses:
1.1.1.20
Step 3 Save your settings to NVRAM. (Refer to the section "Saving Your Settings to NVRAM" later in this chapter.)
If additional synchronous serial interfaces are available in your system, you are prompted for their configuration as well.
The following sample display includes a continuous listing of all interface configuration parameters selected for Ethernet and synchronous serial interfaces. These parameters are shown in the order in which they appear on your console terminal. Only one Ethernet and one synchronous serial interface are configured for this example.
Configuring interface parameters: Configuring interface Ethernet0/0: Is this interface in use? [no]:yesConfigure IP on this interface? [no]:yesIP address for this interface:1.1.1.10Number 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]: Configure AppleTalk on this interface? [no]:noConfiguring interface Serial0/0: Is this interface in use? [no]:yesConfigure IP on this interface? [no]:yesConfigure IP unnumbered on this interface? [no]: IP address for this interface:1.1.1.20Number 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]: Configure AppleTalk on this interface? [no]: The following configuration command script was created: hostname Router enable secret 5 $1$u8z3$PMYY8em./8sszhzk78p/Y0 enable password wilma line vty 0 4 password s snmp-server community public ! ip routing no vines routing no ipx routing no 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 Ethernet0/0 no ipx network interface Ethernet0/1 no ipx network ! interface Ethernet0/0 ip address 1.1.1.10 255.0.0.0 no mop enabled ! interface serial0/0 ip address 1.1.1.20 255.0.0.0 ip route-cache cbus no keepalive ! ! router igrp 15 network 1.0.0.0 ! end Use this configuration? [yes/no]:yes[OK] Use the enabled mode 'configure' command to modify this configuration. Press RETURN to get started!
Your Cisco uBR7246 is now minimally configured and is 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 section "If You Need More Information" earlier in this chapter.
Step 1 Connect a console terminal to the console port on the I/O controller.
Step 2 When asked if you want to enter the initial dialog, answer no to go into the normal operating mode of the router:
no
Step 3 After a few seconds the user EXEC prompt (Router>) is displayed. Type enable to enter enable mode (configuration changes can only be made in enable mode):
enable
The prompt changes to the privileged EXEC prompt:
Step 4 Enter the config terminal command at the enable prompt to enter configuration mode from the terminal:
config terminal
At the Router(config)# prompt, enter the interface type slot/port command to enter the interface configuration mode:
Router(config)# interface serial slot/port
Router(config-int)#
In either configuration mode, you can now enter any changes to the configuration. Press Ctrl-Z to exit configuration mode.
Step 5 Save your settings to NVRAM. (Refer to the section "Saving Your Settings to NVRAM" later in this chapter.)
Your Cisco uBR7246 is now minimally configured and will boot with the configuration you have entered. To see a list of the configuration commands available to you, enter ? at the prompt or press the help key while in configuration mode
To store the configuration or changes to your startup configuration in NVRAM, enter the copy running-config startup-config command at the Hostname# prompt:
Hostname# copy running-config startup-config
Using this command saves the configuration settings that you created in the Cisco uBR7246 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.
You can check your settings and review any changes to your configuration using various software commands.
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, use the EXEC show startup-config command to display the information stored in NVRAM.
To make advanced configuration changes after you establish the basic startup configuration for your Cisco uBR7246, refer to the publications listed in the section "If You Need More Information" in this chapter. These publications contain additional information on using the configure command.
The configuration publications also provide information about the following tasks:
After you have installed the Cisco uBR7246 hardware, checked all external connections, turned on the system power, allowed the system to boot up, and minimally configured the system, you might need to perform more complex configurations, which are beyond the scope of this chapter.
For instructions on the advanced configuration of the port adapters installed in your Cisco uBR7246 universal broadband router, refer to the respective configuration note that shipped with each port adapter. For example, if a Fast Ethernet port adapter is installed, refer the configuration note PA-FE-TX and PA-FE-FX 100BASE-T Fast Ethernet Port Adapter Installation and Configuration (Document Number 78-2659-xx). This configuration note accompanies every Fast Ethernet port adapter that is shipped from the factory as an installed item in a Cisco uBR7246 or as a FRU. The document is also available on the Cisco Connection Documentation CD-ROM and on Cisco Connection Online (CCO).
For instructions on the advanced configuration of the cable modem cards, refer to the configuration note Cisco Cable Modem Card Installation and Configuration (Document Number 78-4978-xx). This configuration note will accompany every Cisco MC11 cable modem card that is shipped from the factory as an installed item in a Cisco uBR7246 or as a FRU. The document is also available on the Cisco Connection Documentation CD-ROM and on Cisco Connection Online (CCO).
For specific information on system and interface configuration, refer to the publications listed in the section "If You Need More Information" in this chapter.
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