Strange ADSL Connection Behavior

I need some help solving strange behavior with a RP-PPPOE connection. I
have done a search of the news groups but after several hours, I have
not seen anything similar.

I am using RP-PPPOE 3.5-1, RedHat 9.0, and an ADSL connection acting as
a router for my small home LAN. When the connection comes up initially,
the speed is dreadfully slow, and web pages either time out or partially
load at glacial speed. If I go to a an ftp site and download a large
file (I FTP a RedHat ISO image), once the ftp connection is made the ftp
file transfer starts and goes at a normal speed 80Kb/s (I stop the ftp
download at this point). At this point the connection works normally
from there on out until I shut down rp-pppoe. This can be days with
out issue, until I shut the connection down. Establishing the initial
ftp connection can take some time, but once the download begins all is
normal. This is how I start new PPPOE connections, and it always
behaves the same way.

A view of ifconfig shows no packet error or lost packets on PPP0. The
internet connections are being made via a windows machine, but I am
certain the issue is not with the windows machine as it works fine with
my D-Link hardware router. Any ideas?

Thanks for any help,

Mark

Mark typed:

>
> A view of ifconfig shows no packet error or lost packets on PPP0. The
> internet connections are being made via a windows machine, but I am
> certain the issue is not with the windows machine as it works fine with
> my D-Link hardware router. Any ideas?


just throwing this out. but have you tried playing with MTU settings?

'ifconfig' - see what MTU is set at.

then:
'/etc/rc.d/init.d/network stop'
'ifconfig eth0 mtu 1492' (or eth1, depending)
'/etc/rc.d/initd/network start'

see if that makes a difference.
if not, try other values for MTU. like 1454 or 1472 etc.


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My MTU is set for 1492. I will try the other settings and see what
happens.

Thanks for the help,

Mark

johnny bobby bee wrote:
>
> Mark typed:
>
> >
> > A view of ifconfig shows no packet error or lost packets on PPP0. The
> > internet connections are being made via a windows machine, but I am
> > certain the issue is not with the windows machine as it works fine with
> > my D-Link hardware router. Any ideas?
>
> just throwing this out. but have you tried playing with MTU settings?
>
> 'ifconfig' - see what MTU is set at.
>
> then:
> '/etc/rc.d/init.d/network stop'
> 'ifconfig eth0 mtu 1492' (or eth1, depending)
> '/etc/rc.d/initd/network start'
>
> see if that makes a difference.
> if not, try other values for MTU. like 1454 or 1472 etc.
>
> --
> - Linux: the choice of a GNU generation
> - free; as in free speech and free beer
>
> remove '.eh' to email