If your Cisco router/modem has a constant "red light" coming from inside, it cannot be repaired and it has been classified a paper weight by the Cisco consortium. This is not the red Alarm light on the front panel.
Click here for way more information than you probably wanted on the lights.
Usually the customer will know how to log into their Cisco without you even helping them. If not, you can do this through the management program that is sitting on their desktop with a Cisco icon. If they don't have that, you can do it with Hyperterminal (Programs, Accessories, Communications, Hyperterminal). Call the connection Cisco, connect using COM 1, and change bit rate down to 9600. If the dog ate their management cable, you can do it through telnet (telnet 10.0.0.1), but if you need to do it through telnet DO NOT REBOOT UNTIL YOU SET ENABLE AND EXEC PASSWORDS OR YOU WILL NEVER BE ABLE TO LOG IN FROM TELNET AGAIN. OK? So just skip the first reboot step in the instructions below in that case and add a step to set the passwords again.
Password: cbos# set nvram erase cbos# write cbos# **Remember not to do this if you're connected through telnet.** reboot Password: (unless you’ve set an exec password) cbos> enable Password: (will bring up cbos# unless you’ve set an enable password) cbos# set ppp wan0-0 ipcp 0.0.0.0 cbos# set ppp wan0-0 dns 0.0.0.0 cbos# set ppp wan0-0 login "the customer's USERNAME" cbos# set ppp wan0-0 password "the customer's PASSWORD" cbos# set int wan0-0 disable cbos# set int wan0-0 vpi 0 vci 32 (or 35 for Visionary DSL aka "Beyond Extreme") cbos# set int wan0-0 enable cbos# set ppp restart enable (ONLY for 675) cbos# set dhcp server enable cbos# set nat enable cbos# write cbos# reboot
1. To make sure the wan0-0 connection remains closed during configuration, enter: set interface wan0-0 disable
2. To set the VCI number to 35, enter: set interface wan0-0 vci 35
Note If you try to enter the command set interface wan0-0 on a connection that is already open, the system prompts you to close that connection before you change the VCI setting. To do this, enter the command set interface wan0-0 close.
3. To enable the wan0-0 connection, enter: set interface wan0-0 enable
4. To begin using this connection with the new settings, enter: set interface wan0-0 open
5. To save the new WAN port configuration, enter: write
6. To exit CBOS, enter: quit
enter: show int wan0-0 Then comes up: cbos#show int wan0-0 WAN0-0 ATM Logical Port PVC (VPI 0, VCI 35) is open. ScalaRate set to Auto AAL 5 UBR Traffic PPP LCP State: Request Sent PPP NCP State (IP Routing): Starting PPP MRU: 2048 HDLC Framing: enabled MPOA Mode: VC Mux PPP Login:
@sbcglobal.net Authentication Type: Autodetecting/PAP RADIUS: disabled PPP Tx: 72 Rx: 0 Dest IP: 0.0.0.0 Dest Mask: 255.255.255.255 IP Port Enabled
Downstream Data Rate: XXXX Kbps Upstream Data Rate: XXX KbpsThen down at the bottom it shows errors:
Local Counters: Interleaved RS Corrected Bytes: 4842 Interleaved Symbols with CRC Errors: 2 No Cell Delineation Interleaved: 195968 Out of Cell Delineation Interleaved: 65280 Header Error Check Counter Interleaved: 32768 Count of Severely Errored Frames: 32768 Count of Loss of Signal Frames: 0 Remote Counters: Interleaved RS Corrected Bytes: 18739 Interleaved Symbols with CRC Errors: 0 No Cell DelThe above example is typical of a connection that's working OK. If, for instance, Interleaved Symbols with CRC Errors is 2,000,000, that may indicate a noise/interference problem, depending on how long the modem has been up. Reboot the modem to clear the counters and see if the error counters "increment" (that is, continue to go up rapidly).
cbos#show ppp VC VPI/VCI STATE MRU USERNAME RADIUS TX RX wan0-0 00/35 Request Sent 2048
@sbcglobal.net disabled 90 0
There should be a blue-gray management cable plugged in from the modem to the computer. People who have these old Ciscos are generally reasonably knowledgeable in my experience and will know how to log into the management interface without any help. So you will just have to tell them what commands to put in.
Web interface: You've got to enable it from the command line first before it will even work. The command is set web enabled.
Default LAN Address: 10.0.0.1
User name to get into the web interface: exec or enable. If you log in as Exec you are limited as to what you can do and change; with Enable you can change things to your heart's content.
Password for web interface: Your exec or enable password.
The User Manual for Cisco 600 Series DSL Modems
Qwest's Help Page for the Cisco 675/678
Guide to the CBOS. This tells you all the commands for the command line system this modem uses.