[c-nsp] ADSL weirdness

[Vinny Abello]

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Mateusz Blaszczyk
> Sent: Sunday, August 24, 2008 4:26 PM
> To: Daniel D Jones
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] ADSL weirdness
>
> Daniel,
>
> >
> > interface Dialer1
> > mtu 1492
>
> sounds like TCP window problem
> try adding
>
> ip mtu 1492
> ip tcp adjust-mss 1452
>
> look here for more info
>
> http://www.cisco.com/en/US/docs/ios/12_2t/12_2t4/feature/guide/ft_admss
> .html

Specifically add:

ip tcp adjust-mss 1452

to the INSIDE interface where your devices which access the web sites are attached. That should do it.

-Vinny