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This chapter provides procedures for configuring the Cisco 6200 digital subscriber line access multiplexer (DSLAM). This chapter provides the following procedures:
The network trunk card (NTC) requires no configuration. If you are replacing a management processor card (MPC), refer to the configuration instructions in the document Cisco 6200 FRU Installation and Replacement. If you are installing a new Cisco 6200, you should follow the configuration instructions outlined in "Installing the Cisco 6200."
For detailed descriptions of the configuration and other commands mentioned in this chapter, go to "Command Reference."
The Cisco 6200 can be configured by following the procedures in this chapter or by using the Cisco 6200 Manager, which provides a graphical user interface for configuring, monitoring, and managing the Cisco 6200. For information on the Cisco 6200 Manager, see the User Guide for the Cisco 6200 Manager.
This section explains how to configure the subscriber line card (SLC) interfaces on a Cisco 6200 system. You can follow these steps before or after you insert the SLC into its slot.
To configure an SLC, you must be in global configuration mode. If you are already in this mode, go to Step 3.
Step 1 Enter the enable command and then enter the password to go into privileged mode.
c6200> enable
Enter Password:
Step 2 Enter the configure command and press Return to accept "terminal," the default.
c6200# configure
Configuring from terminal, memory, or network [terminal]?
c6200(config)#
Step 3 If you already inserted the card you want to configure into its slot, go to Step 4. If the card is not in the slot, use this step to preconfigure the card.
Enter the c6200 card command and specify a slot number and card type. Each SLC card goes into a slot with a number in the range 5 to 14 and has a card type of slc1-8-cap. Each SLC has eight ports, numbered 0 to 7. In the following example, an SLC is being preconfigured for slot 5.
c6200(config)# c6200 card 5 slc1-8-cap
Step 4 Enter the interface dsl command and specify the card and port you want to configure. In this example, you configure port 0 of the SLC in slot 5.
c6200(config)# interface dsl 5/0
Step 5 Specify a subscriber name. In this example, the subscriber name "boston" is specified. If you skip this step, the system provides a default subscriber name in the form port-type slot/port, for example, "DSL 6/2."
c6200(config-if)# dsl subscribername boston
Step 6 Specify downstream and upstream bit rates, which in this example have been set to 1600 and 272 kbps, respectively.
c6200(config-if)# dsl bitrate downstream 1600 upstream 272
Step 7 Activate the configuration by entering the no shutdown command and return to the global configuration prompt by entering the end command.
c6200(config-if)# no shutdown
c6200(config-if)# end
c6200(config)#
Repeat Step 4 through Step 7 for each interface that you want to configure, and then follow the step below to save the configuration to nonvolatile memory. If you do not save it, the configuration will be lost when the device is rebooted.
Step 8 To save the configuration, use the end command to return to privileged EXEC mode, and copy the running configuration to the startup configuration.
c6200# end
c6200# copy running-config startup-config
Step 9 In addition to saving the configuration to the startup configuration, you may want to copy it to a PCMCIA Flash memory card. The following command copies the startup configuration to a file named "myconfig" on the PCMCIA card in slot 0.
c6200#copy startup-config slot0:myconfig
A master configuration file is used to configure multiple SLC cards or multiple Cisco 6200 nodes. The following sections explains how to create a master configuration file, upload it to a TFTP server, and download it to the running configuration of a Cisco 6200.
A master configuration file can be copied from an existing configuration file or created from a text file.
If your master configuration file is the same as the startup configuration file (stored in NVRAM) or the running configuration file (stored in active memory) on one of your Cisco 6200s, go to the next section, "Copying a Master Configuration to a TFTP Server."
You can create a master configuration file that selectively modifies your local configuration files. To do this, create a text file that includes only those configuration instructions that you want in the master file. Put each command on a separate line.
The following text is an example of a master configuration file that changes only the configurations for DSL interfaces 5/0 through 5/3.
int dsl5/0
dsl bitrate downstream 1600 upstream 680
no shut
int dsl5/1
dsl bitrate downstream 1600 upstream 680
no shut
int dsl5/2
dsl bitrate downstream 1600 upstream 680
no shut
int dsl5/3
dsl bitrate downstream 1600 upstream 680
no shut
!
end
After creating the text file, go to the next procedure, "Copying a Master Configuration to a TFTP Server."
Use the following procedure to copy a master configuration file to a TFTP server.
Step 1 If you are not in privileged mode, enter it by keying in the enable command. In this example, the running configuration file is being used as the master configuration file. If another file were being used, you would replace "running-config" with the name of that file. Copy the configuration file to a TFTP server by using the following command:
c6200# copy running-config tftp
Step 2 Specify the name of the remote host. In this example, the name is tftp-server.
Remote host []? tftp-server
Step 3 Assign a name to the configuration file or use the default name that appears between the brackets.
Name of configuration file to write [myconfig]?
Step 4 Confirm the configuration-file name and host destination.
Write file myconfig on host 3.0.3.1? [confirm]
Building configuration...
Use the following procedure to copy the master configuration file from a TFTP server into the local running configuration.
Step 1 If you are not in privileged mode, enter it by keying in the enable command. In privileged mode, enter the following command and accept the default value of host.
c6200# copy tftp running-config
Host or network configuration file [tftp-server]?
Step 2 Enter the IP address of the TFTP server where the master configuration file is stored.
Address of remote host [3.0.3.1]?
Step 3 Enter the name of the master configuration file on the TFTP server and confirm.
Name of configuration file [myconfig]?
Configure using myconfig from 3.0.3.1? [confirm]
c6200#
Step 4 The master configuration file is integrated into the existing running configuration file and loaded into running memory. If you do not save the local configuration, the configuration will be lost the next time the device is rebooted. Save the configuration to the NVRAM by entering the following command:
c6200# copy running-config startup-config
Step 5 In addition to saving the configuration in the startup configuration, you may want to copy it to one of the flashcards. The following command copies the startup configuration to a file named "myconfig" on the PCMCIA flash memory card in slot0.
c6200#copy startup-config slot0:myconfig
This section explains how to create, change, and recover passwords.
The following procedure is used to create or change a password:
Step 1 Enter the enable command; then enter the password.
c6200> enable
Enter Password:
Step 2 Enter the configure command and accept the default value "terminal."
c6200# configure
Configuring from terminal, memory, or network [terminal]?
c6200(config)#
Step 3 Enter the enable password command. This password is displayed in the configuration files. In this example, the password "potato" is created.
c6200(config)# enable password potato
Step 4 Enter the enable secret command. This password is displayed in encrypted form in the configuration files. The secret password is used for the same purpose as the enable password. In this example, the password "carrot" is created.
c6200(config)# enable secret carrot
If you lose or forget your enable password, see the section "Recovering Lost Passwords."
To recover a password, you must have a terminal attached to the console port of the Cisco 6200. For more information, refer to "Installing the Cisco 6200."
Step 1 At the console, enter the show version command and record the setting of the configuration register. You will need to specify this value in Step 15. The configuration register value is on the last line of the display. A typical configuration register value is 0x2101 or 0x101.
Step 2 Turn off the Cisco 6200 DSLAM and then turn it on. Within 60 seconds of turning on the DSLAM, press the Break key on the terminal.
The rommon> prompt appears. If it does not appear, the terminal is not sending the correct Break signal. In that case, check the terminal or terminal emulation setup.
Step 3 Enter the confreg command at the rommon> prompt. The following prompt appears:
rommon> confreg
Do you wish to change configuration[y/n]?
Step 4 The system asks if you want to change the configuration. Enter Yes and press Return.
Do you wish to change configuration[y/n]? y
Step 5 Enter No to subsequent questions until you are asked if you want to ignore the system configuration information. Answer Yes to that question.
enable "Ignore system config info[y/n]?" y
Step 6 Enter No to subsequent questions until you are asked if you want to change the boot characteristics. Answer Yes to that question.
change boot characteristics[y/n]? y
Step 7 At the next prompt, you are asked where you want to boot from. Enter 2, to select "boot system."
enter to boot: 2
0=ROM Monitor
1=the boot helper image
2-15=boot system
Step 8 A configuration summary is displayed and you are asked if you want to change the configuration. Answer No.
Do you wish to change configuration[y/n]? n
rommon>
Step 9 Enter the reset command at the rommon> prompt.
rommon> reset
Step 10 When the DSLAM boots, enter No to any setup questions until the following prompt appears:
router>
Step 11 Enter the enable command to enter privileged EXEC mode. You will not need a password.
router> enable
router#
Step 12 Copy the configuration file that is stored in the NVRAM to active memory:
router# copy startup-config running-config
Step 13 You can now create a new password. Enter the configure terminal command.
c6200# configure terminal
c6200(config)#
Step 14 Enter the enable secret command and specify a password. In the following example, the password "carrot" is created:
c6200(config)# enable secret carrot
c6200(config)#
Step 15 Enter the config-register command, and use the value recorded in Step 1. For example:
c6200(config)# config-register 0x2101
Step 16 You must now instruct the system to activate the Ethernet interfaces associated with the backplane and the MPC.
(a) Configure interface ethernet 0/0 by entering the following commands:
c6200(config)# interface ethernet 0/0
c6200(config-if)# no shutdown
(b) Enter the exit command to return to global configuration mode:
c6200(config-if)# exit
(c) Configure interface ethernet 0/1 by entering the following commands:
c6200(config)# interface ethernet 0/1
c6200(config-if)# no shutdown
Step 17 Enter Ctrl-Z to quit from the configuration mode.
Step 18 Enter the reload command at the prompt and answer Yes when asked if you want to save the configuration file. Press Return to confirm that you want to proceed with the reload.
c6200)# reload
System configuration has been modified.
Save? [yes/no] y
Proceed with reload [confirm]?
To Telnet to the Cisco 6200, you need to specify the Ethernet port (IP address) of the Cisco 6200. Normally, you specify this address when you install the system. You can change the Cisco 6200 Ethernet port address using the following procedure:
Step 1 Enter the interface ethernet command for card/port 0/0:
c6200(config)# interface ethernet0/0
Step 2 Specify the IP address and subnet mask for the Cisco 6200:
c6200(config-if)# ip address <ip_address> <subnet_mask>
Step 3 Enter the no shutdown command:
c6200(config-if)# no shutdown
Step 4 Enter Ctrl-Z to quit from the configuration mode.
You can now Telnet to the specified IP address of the Cisco 6200.
In the Cisco 6200, management activities like saving and loading of configuration files via TFTP, running CLI remotely over a Telnet session, and SNMP-based network management require IP connectivity.
The Cisco 6200 supports two ways to achieve this connectivity:
The typical network configuration for in-band management is shown in Figure 4-1.
To use in-band management, configure the ATM port on the MPC to handle IP over ATM (RFC 1483) and either establish a static path between the management station and the ATM port, or set up a default gateway, as described below. Follow these steps at the Cisco 6200 console or via Telnet.
Step 1 Enter enable and the password to go to privileged EXEC mode.
c6200> enable
Password:
Step 2 Enter configure terminal to go to global configuration mode.
c6200# configure terminal
Step 3 Enter the interface command to go to interface configuration mode. Specify the ATM port (0/0) and subinterface (.1) on the MPC, and set up a point-to-point connection.
c6200(config)# interface atm 0/0.1 point-to-point
Step 4 Enter the ip address command to assign an IP address and subnet mask to the ATM subinterface.
c6200(config-if)# ip address <ip-address> <mask>
Step 5 Enter the atm pvc command to set up the ATM permanent virtual circuit (PVC).
c6200(config-if)# atm pvc <vc_num> vpi vci
Step 6 Do only one of the following:
c6200(config-if)# ip route <dest-ip-address> <mask> <forwarding interface>
c6200(config-if)# ip default-gateway <gateway-ip-addr>
Step 7 Set up the corresponding PVC, IP address, and static route (if you configured a static route in Step 6) on the router that connects the Cisco 6200 management station to the ATM network.
Step 8 Verify the connection by pinging from the management station to the Cisco 6200 ATM port's IP address.
Some of the parameters that control the behavior of lines on the 8-port DMT card are interdependent. Specifically, the attainable bit rate determines what the maximum codeword size (symbols per codeword) can be, and the codeword size, in turn, influences the allowable values for the interleaving delay and FEC check bytes parameters. See Table 4-1.
| Bit Rate | Maximum Codeword Size | Allowable Check Bytes Settings | Allowable Interleaving Delay Settings |
|---|---|---|---|
32 to 352 Kbps | 16 | 0 or 16 | 0, 8 or 16 |
384 to 800 Kbps | 8 | 0, 8 or 16 | 0, 4, 8 or 16 |
832 to 1728 Kbps | 4 | 0, 4, 8, 12, or 16 | 0, 2, 4, 8 or 16 |
1760 to 3584 Kbps | 2 | Any value (0, 2, 4, 6, 8, 10, 12, 14, 16) | 0, 1, 2, 8 or 16 |
3616 to 8032 Kbps | 1 | Any value (0, 2, 4, 6, 8, 10, 12, 14, 16) | 0, 1, 2, 8 or 16 |
Cisco recommends that you leave the codeword size, check bytes, and interleaving delay parameters set to their defaults.
However, if you want to change these values, follow these steps:
Step 1 To determine the bit rate attainable on the line, first use these interface configuration commands to set the parameters to their default values:
c6200(config-if)# no dsl check-bytes
c6200(config-if)# no dsl symbols-codeword
c6200(config-if)# no dsl int-delay
Step 2 Bring up the interface and use the show dsl interface command to display the actual bit rate at which the line trains. For example, this command displays the bit rates and other information for port 2 in slot 5:
c6200# show dsl int dsl 5/2
Step 3 Use the dsl check-bytes, dsl symbols-codeword, and dsl int-delay interface configuration commands to set the parameters, following the guidelines in Table 4-1.
Posted: Tue Dec 17 19:20:18 PST 2002
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