Subject: Re: PPPoE + fragmentation + bad hdr length
To: Dan Fraser <>
From: Martin Husemann <>
List: tech-net
Date: 10/04/2004 23:05:02
On Mon, Oct 04, 2004 at 04:33:30PM -0400, Dan Fraser wrote:
> Small packet communication is fine (interactive ssh) but as soon as larger
> packets are sent, the link pretty much freezes.

Welcome to PPPoE MTU hell. You very likely see a path-mtu-blackhole; a
misconfiugred firewall somewhere blocking ICMP traffic.

What kind of router do you use for your PPPoE link? Does it do mss-clamping?