We have a new Cisco 857 ADSL router, and have configured it with (we believe) the correct settings using the built-in "SDM Express" software. However, we're unable to connect to the Internet using it.
We know the ADSL line is OK, because if we use a Draytek or a Linksys router on the same line (we've tried both), they connect just fine.
Trouble is, our Cisco knowledge is somewhat limited - can someone please recommend how we might proceed to troubleshoot from here?
Cheers,
Jim Rorrison
I should also mention that we've swapped the Cisco router out with an identical one, and that can't connect either.
However, when we install the Cisco router on an ADSL line located in a different city, it DOES work..
So it appears that the Cisco doesn't "like" the ADSL line we have here, although other types of router have no problems with it.
Any ideas? It's got us baffled!
Cheers,
Jim Rorrison
post:
show version show run show interface show atm interface atm0
debug atm events ( shut/no shut atm interface)
In addition to what Merv said, try all dsl operating-mode options as I had a similar problem where although my ISP said use ITU full rate mode (itu-dmt) as soon as I changed it to ansi-dmt it connected straight away!!
Router(config-if)#dsl operating-mode ? ansi-dmt ANSI full rate mode auto auto detect mode itu-dmt ITU full rate mode
J
There is problem with new ADSL 20190 chipset and some older DSLAM cards (Siemens one of them). I have observed similar behaviour with 876 router don't working on the line where 836 works just fine. Have a look at bug CSCsc52775. You need to open TAC case to resolve the problem if you can't get you line switched to another DSLAM card type.
Regards, iLya
There are firmware upgrades available from cisco. I don´t know how else to get them than opening a tac-case
good lick
FYI I seemed to have this and fixed it with a regrade to the latest greatest software.
12.4(4)T1It did connect once with dsl operating-mode ansi-
I am on BT (effectively) in the UK .
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