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4.3 DSL - How to configure Cisco 678 for a static IP address

  1. Connect the light blue serial cable that came with your modem to the serial port on the Cisco modem, and the other end to your computers serial port;
  2. Start Hyperterminal and configure it for 38400-8-N-1;
  3. Enter the following commands at the prompt, substituting your username and password where indicated:
cbos# set nvram erase 
cbos# write 
cbos# reboot 
    Password: <Enter> (unless you setup an exec password)
cbos> enable 
    Password: <Enter> (unless you setup 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 "ISP USERNAME"
cbos# set ppp wan0-0 password "ISP PASSWORD"
cbos# set ppp wan0-0 disable
cbos# set int wan0-0 vpi 0 vci 32
cbos# set int wan0-0 enable
cbos# set int vip0 address xxx.xxx.xxx.xxx (your Gateway IP address as provided by Simply Bits)
cbos# set int vip0 mask xxx.xxx.xxx.xxx (your subnet mask as provided by Simply Bits)
cbos# set dhcp server disable
cbos# set nat disable
cbos# write
cbos# reboot

After the device has rebooted enter the IP address, subnet mask and gateway IP address onto whatever device you have behind the Cisco DSL modem