Re: PPPoE problems

From: Alex Rubenstein (alex@nac.net)
Date: Fri Oct 12 2001 - 15:22:43 EDT


Or, use the tcp adjust-mss feature, which fixes even broken clients with
broken MTU path disc and sites that filter ICMP..

On Fri, 12 Oct 2001, Andrew Herdman wrote:

> PPPoE drops the MTU down to 1492. Adjust to that and everything will be fine.
>
> Andrew
>
> On Wed, Oct 10, 2001 at 04:54:15PM -0700, Joe McGuckin wrote:
> > I'm using PPPoE on a 7206VXR300 to terminate about 100 active sessions.
> >
> > Basic connectivity and authentication is working. I am seeing some problems
> > with connecting to unix ftp servers. Downloads are slow and bursty (for example,
> > an initial burst of traffic followed by several seconds on inactivity, then
> > another burst of traffic). Performing the downloads on the lan downstream of the
> > pppoe router (but without using pppoe) produces a fast, continous download.
> >
> > Most of the end users are using PPPoE routers manufactired by Netgear or DLINK.
> > I've demonstrated the problem with at least 2 different brands of routers.
> >
> > Does PPPoE cause problems with MTU settings?
> >
> > Any advice would be welcome!
> >
> > Thanks,
> >
> > Joe
> >
> >
> > --
> >
> > Joe McGuckin
> >
> > ViaNet Communications
> > 994 San Antonio Road
> > Palo Alto, CA 94303
> >
> > Phone: 650-213-1302
> > Cell: 650-207-0372
> > Fax: 650-969-2124
>
>



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