what?s up with ADSL ?

[mcelec]

Hi folks,

I have a 2Mbps ADSL line, it has a generic router installed, then it is working fine, however, if I install in that line a 1721 router with a ADSL module, it does not work fine, its performance is going down to 128 Kbps.

The configuration I?m using is intalled in diferent routers around, the router IOS is c1700-k9o3sy7-mz.123-12a.bin, witch is ADSL and security IOS, the router performance looks fine (memory, processor).

Can somebody tell something about that please ??

Martin

[b.hsu]

not sure of the issue, check out if the following link helps :

http://www.cisco.com/univercd/cc/td/doc/product/dsl_prod/vrmgtsw/vr4w/rel30/vwdircgd/04vwdc06.htm

[Sam Smiley]

Hi Martin,

I'm not sure if this is true with the 1700 routers, It was an issue using a WIC-1ADSL on the 2600XM devices with various IOS.

Issue a show controller atm0/0 look for the following in the first 2 screens:

SCC Clockrates:
SCC0 = 7000000 (ATM0/0)
SCC1 = 0
SCC2 = 0
SCC3 = 1000000 (ATM0/0)

By default the SCC0 will show 2600000, you should be able to change this from interface configuration on the atm0/0.

Issue the following on atm0/0:

clock rate aal5 7000000

This will reset the atm interface, once done your speeds should be what they are supposed to be.

Regards,

Sam