On Mon, May 07, 2007, Joe Maimon wrote: > > > > Joe Maimon wrote: > > > > > > >This is obviously not best effort. Best guess would be "managed > >bandwidth" differentiated by ip ranges and that the "change" was a > >different pool assignment. > > > >I suspect the stellar icmp echo performance is also intentional. > > Or it could just be some QOS policing/shaping.
How asymmetric is the link? I've noticed quite dramatic differences when configuring even basic policy maps with WRED on DSL TX-side on CPE (ie, the small sized pipe upstream from client to ISP.) I can't (normally) control what the ISP is sending to me*, but I can try to make the best of the situation. And it can allow pipes to be almost fully utilised without massive performance drop-offs at the top end. Adrian * except in instances where I also run the ISP network..