Cisco 837 ADSL Routers setup back to back

[THerman]

Hello,

Does anyone know if it is possible to configure a Cisco 837 to train against another 837 on the ADSL interface, wired back to back. I know this is possible with some other routers (worked with Efficient Networks product a long time ago that would do this).

If so, does anyone know what you need to do to the config to make this work, as I could not get them to train.

Heres my debug:

00:06:18: DSL: Reading training log
00:06:19: DSL: Sent command 0x4
00:06:19: DSL: Send ADSL_OPEN command.
00:06:19: DSL: Using subfunction 0x15
00:06:19: DSL: Using subfunction 0x15
00:06:19: LOCAL:Max noise margin for power cutoff 31
00:06:19: DSL: Sent command 0x7
00:06:19: DSL: Received response: 0x26
00:06:19: DSL: Unexpected response 0x26
00:06:19: DSL: Send ADSL_OPEN command.
00:06:19: DSL: Using subfunction 0x15
00:06:19: DSL: Using subfunction 0x15
00:06:19: LOCAL:Max noise margin for power cutoff 31
00:06:19: DSL: Sent command 0x7
00:06:21: DSL: 1: Modem state = 0x8
00:06:24: DSL: 2: Modem state = 0x8
00:06:24: DSL: Received response: 0x22
00:06:24: DSL: Open failed: Error in early non-CRC message or in first CRC-cover
ed message -- retrying

Many Thanks.

Tim

 

[rtfmdude]

Tim,

From my readings, adsl back to back doesn't work - shdsl does. You'd then make sure one side was cpe, the other co:

dsl equipment-type co | dsl