On Mon, 15 Jul 2013 06:24:20 -0700 Ben Greear <[email protected]> wrote:
> On 07/14/2013 11:43 PM, Jagdish Motwani wrote: > > On 07/13/2013 09:17 PM, Ben Greear wrote: > >> On 07/13/2013 01:29 AM, [email protected] wrote: > >>> Yes John, > >>> When i do the ping request, i can see the 2 ip fragments. Its the > >>> ping reply that is dropped by my igb interface. > >> > >> Is the replay also 2 packets? If not, the peer machine may have wrong MTU. > >> > >> Thanks, > >> Ben > >> > > You are right Ben. Peer machine has MTU=1500 greater than my MTU=1000. > > > > So the reply is a single packet (which is bigger than my MTU). > > > > My problem is : By setting an MTU of 1000, my igb device drops all received > > packet having length more than 1000 > > That is how must NICs work...MTU basically == maximum receive unit as well. > > > > However e1000e allows me to receive such packets. > > Someone will probably fix that one day. > > Why do you expect mis-matched MTU networks to work? > > Thanks, > Ben > > As I remember it, E1000 has a hardware design that forces the receive buffer has to be rounded up to the next power of 2. ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
