On 25/07/07, Tharindu Rukshan Bamunuarachchi <tharindunix@xxxxxxxxx> wrote:
Dear All, What is the best way to enable Jumbo in Linux?
Set your MTU to 9000 on all equipment in the network path that needs to use jumbo frames. That means all network interface cards, all switches, routers etc need to be using an MTU of 9000 - if just a single link between the two hosts communicating are using a lower MTU (like the standard 1500), then that part of the path will cause your jumbo frames to be broken up into smaller chunks and then all bets are off. You'll also discover that not all network equipment (or drivers) handle Jumbo Frames equally well. Adjusting socket buffer sizes can help performance a bit. Different TCP congestion control modules can also be used to tweak performance for a specific need. In "menuconfig" look at: "Networking" --> "Networking options" --> "TCP: advanced congestion control" Some links you may find useful : http://www-128.ibm.com/developerworks/linux/library/l-hisock.html http://sd.wareonearth.com/~phil/jumbo.html http://datatag.web.cern.ch/datatag/howto/tcp.html -- Jesper Juhl <jesper.juhl@xxxxxxxxx> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
