Cisco 67x Bridged Mode Instructions

These are quick instructions for setting up the Cisco 67x Series DSL modem to Bridged Ethernet mode. If you are not sure whether or not you Cisco 675 or 678 has been shipped in bridged mode, check the bottom, there is usually a sticker on it indicating it’s original configuration.

Connecting to the Cisco 67x and Changing the Settings

1. Plug the Management Cable into the serial port of your computer.

The Management Cable has an ethernet connector on one side and a serial connector on the other. The ethernet connector plugs into the MGMT port on the back of the Cisco 67x. The serial connector plugs into your serial (COM) port. (Macintosh users may need to purchase a serial to serial adaptor so that they can plug the serial connector from the DSL modem into the modem or printer port of their computer. It is also possible to get a serial to USB connector, but it is more expensive).

2. Use HyperTerm (or ZTerm) to open a connection to the Cisco 67x

These directions are mainly written for users connecting to their DSL modem with HyperTerminal. Connecting to your DSL modem with ZTerm and other terminal connection programs is a similar process. The port settings, and commands that you type once you are connected are exactly the same.

Open HyperTerminal.

Name your New Connection anything you think you’ll remember (Cisco 67x is a good name). Then choose and Icon for it. Click OK

Next you will be asked for Modem Information. On this screen you want to change the Connection setting at the bottom to:
Connect using: COM1, COM2 or COM3

If you don’t know which COM port you connected the serial cable from the Cisco 67x to try connecting to COM1 first, then disconnect, then try COM2 and repeat with COM3. Macintosh users should connect either via the Modem or Printer (or USB) port; this is dependent on how the cables are set up.

Click OK

Set the properties for your connection with the following port settings:
Bits per second: 38400
Data bits: 8
Parity: None
Stop Bits: 1
Flow Control: None

Click OK

A window should come up with a welcome message:
Helo!
CBOS v2.0.1 (or higher)

Press ENTER The password prompt will be displayed.
(enter your password if you have one otherwise press the ENTER key)

The prompt should look like this: cbos>

type: enable (enter)
The password prompt will be displayed.
(enter your password if you have one otherwise press the ENTER key)
(If the Cisco doesn’t accept your password, or ENTER follow these instructions to reset the password on your modem: Resetting the Cisco 67X Password)

The prompt should change to this: cbos#

3. Erasing your old settings

Type the following; hit (enter) after each line:
set nvram erase
write
reboot

The window should come up with a welcome message:
Helo!
CBOS v2.0.1 (or higher)

Press ENTER The password prompt will be displayed.
(enter your password if you have one otherwise press the ENTER key)

The prompt should look like this: cbos>

type: enable (enter)
The password prompt will be displayed.
(enter your password if you have one otherwise press the ENTER key)

The prompt should change to this: cbos#

DMT instructions (your DSL was ordered or upgraded after April, 2001)

Type the following; hit (enter) after each line:
set bridging rfc1483 enabled
set bridging management enabled
set interface wan0-0 disabled
write
set interface wan0-0 vpi 0
set interface wan0-0 vci 32
set interface wan0-0 enabled
write
reboot

CAP instructions (your DSL was ordered before April, 2001)

Type the following; hit (enter) after each line:
set bridging rfc1483 enabled
set bridging management enabled (This command is required in systems 2.2 and later)

(The interface steps can be skipped if you haven’t set the vpi vci before)
set interface wan0-0 disabled
write
set interface wan0-0 vpi 1
set interface wan0-0 vci 1
set interface wan0-0 enabled

write
reboot

A few seconds after typing reboot, your WAN LNK light should start to blink. It should become solid 10-15 seconds later. (If it blinks continuously for more than a couple of minutes, connect to the router again and type show nvram. That command will tell you what mode the Cisco 67x is set in. If it shows that Bridged Ethernet is set to RFC1483 then it is set correctly.

Quit HyperTerminal (or ZTerm) and unplug the cables. Your Cisco 67x is set to Bridged Ethernet Mode.

Qwest Cisco 67x Troubleshooting

If your WAN LNK light stays blinking continuously it has lost connection with the QWest equipment at the Qwest Central Office for your neighborhood.

Try unplugging and plugging in the Cisco 67x. If WAN LNK light does not change to a steady green light after a couple of minutes; call Qwest DSL Repair 1-888-234-XDSL (9375).

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