Configure G.SHDSL back-to-back on CISCO 888

[tazi mahmoud]

Hello,

i would like to configure back-to-back shdsl between two routers Cisco 888

regards

[Peter Paluch]

Hello,

On a pair of 1841 routers with a G.SHDSL WIC module, this would be the configuration:

R1:

controller DSL 0/1/0
 mode atm
 line-term co

R2:

controller DSL 0/1/0
 mode atm

This configuration will allow the two routers to bring up the line in a 2-wire mode with a speed of 2312 Kbps. R1 acts like a Central Office device (thanks to the line-term co command), R2 acts like a Customer Premises Equipment device (there is no line-term command present but it it equivalent to configuring it with line-term cpe).

Adding the line-mode 4-wire command to R1 in the controller dsl section, and either line-mode auto or line-mode 4-wire to R2 will allow the routers to bring up the line using 4608 Kbps, assuming that the back-to-back cable has 4 wires instead of just 2.

The actual configuration of the interface would then be performed on the interface ATM0/1/0 (the number is identical to the number in the controller dsl command). I am not attaching this configuration because I am not entirely sure what would you like to configure next: Plain IP over ATM, or PPPoE, or PPPoA? Let me know.

Best regards,
Peter

[tazi mahmoud]

Hello,

thanks for your reply, in my case it's a CISCO888 with Controller SHDSL

SHDSL link is to extend a local IP network  

regards

[Peter Paluch]

Hi,

Unfortunately, I do not have a Cisco 888 router series available so I cannot give you a precise configuration for that model. However, I suggest you try the commands I have posted earlier - I suppose they will be accepted with only very minor changes (the 0/1/0 will probably be a different number on your router - check out the show running-config as the controller line is most probably there already).

What do you mean by "SHDSL link is to extend a local IP network"? Do you want a single IP network to span through your two routers, or do you just want your two routers to connect to each other using a SHDSL connection, with each router having its own IP network? Can you perhaps draw a quick picture of your network, showing the two routers and all the IP networks connected to these routers?

Best regards,
Peter