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sniper34696
Beginner

Connecting two Cisco 878 G.SHDSL routers back to back

Hi,

I searched a lot but couldnt find a clear document about connecting 2 G.SHDSL routers back to back.

First of all I am not sure which type of cable (RJ11) is used for connecting two 878 routers.

Does it have to be cross or straight cable.

Is there anyone telling which RJ11 pairs will be connected each other

1 --> 1

2 --> 2

3 --> 3

4 --> 4

5 --> 5

6 --> 6

OR

1 --> 1

2 --> 2

3 --> 4

4 --> 3

5 --> 5

6 --> 6

OR


1 --> 6

2 --> 5

3 --> 4

4 --> 3

5 --> 2

6 --> 1

According the configuration samples

One router must be CPE and the other must be CO for simulating DSLAM.

Can anyone send me a working back to back very simple example configuration.

Thanks for your help

2 REPLIES 2
Jan Buijze
Beginner

Hi,

I had the same problem. The Cisco document 25900 (Configuring CPE Back-to-back through G.shdsl ports) was not helpful. But the following site is because it contains a working configuration. I have tested it with a normal RJ11 cable and it is working fine. The link to the site: http://boonmee.blogspot.nl/ (search for Cisco Router878 G.SHDSL Back-to-Back Configuration on the page).

Giuseppe Larosa
Hall of Fame Master

Hello Sniper,

the cable is not an issue because one side is configured at controller level for CO operations.

The exact configuration on 878 may be different from that reported in some examples and this may be the source of difficulties.

The link reported by Jan should be helpful

http://boonmee.blogspot.it/search?q=SHDSL

Hope to help

Giuseppe