Configuring a Cisco 67x for DSL Connectivity:
Note: use the hard links if you hit an instruction that is vague -- having a background in programming, I hate re-inventing the wheel
Step 1:
Terminal In to the router and get to a
CBOS# prompt. Type the following commands in the order they are presented:
set nvram erase
write
reboot
When its done rebooting, press enter once, and press it again when it asks for a password (you won't have one now). Check the steps in
this writeup to get to a
CBOS# prompt
Step 2:
If you are in
PPP Mode, proceed to step 3. If you are in
rfc 1483 (
Bridging) mode, proceed to step 6.
Step 3:
If you are in
PPP-
Dynamic mode, proceed to step 4. If you are in
PPP mode, but have a
static IP Address, proceed to step 5.
Step 4:
Type the following commands in the order they are presented.
set ppp wan0-0 ipcp 0.0.0.0
set ppp wan0-0 dns 0.0.0.0
set ppp wan0-0 login -username-
set ppp wan0-0 password -password-
set dhcp server enable
set nat enable
set web disable
set web port 55555
write
reboot
Now let me explain what each command does. The first command tells the
router to obtain an
IP address from the
ISP. The second tells the router to also obtain its
DNS server IP addresses from the ISP. The third and fourth set your
username and
password (respectively) for your ISP. The 5th tells the router to act as a
DHCP server, automatically serving IP addresses to the computers on your
LAN. The 6th enables
NAT, which is used by the router to know where to send traffic between the LAN and the
WAN. The seventh disables the
web interface, eliminating a vulnerability to the
Code Red Worm. The eighth adds further protection from Code Red. The ninth saves the current configuration. The tenth and final command reboots the router so it can make use of the changes. Proceed to step 7.
Step 5:
Type the following commands in the order they are presented.
set dhcp server disable
set interface eth0 address -your static IP-
set interface eth0 netmask -your Subnet Mask-
write
reboot
Proceed to step 7.
Step 6:
Type the following commands in the order they are presented.
set bridging rfc1483 enabled
set bridging management enabled
write
reboot
Proceed to step 7.
Step 7:
If you have a Cisco 675 or a Cisco 678 in
CAP Mode, you should now see a solid WAN LNK light. If not, call up your DSL Line support number. If you see a solid WAN LNK light, but are unable to browse, you need to call your ISP. If you have a Cisco 678 and your line is in
DMT Mode then proceed to step 9.
Step 9:
Type the following commands in the order they are presented.
set int wan0-0 disable
write
set int wan0-0 vpi 0
set int wan0-0 vci 32
set int wan0-0 enable
write
set int wan0 retrain
"ADSL Physical Link 0 is retraining" should now appear on your screen and your WAN LNK light should flash for a moment then go solid. If not, contact your
DSL Provider.
Click Here for more info on the Cisco 67x.