On Tue, Mar 20, 2018 at 2:33 PM, Ran Shalit <ransha...@gmail.com> wrote: > Hello, > > We tested the time it gets for successful boot from powerup, and we > are surprised to see that using a switch in the middle (100M) gives > better result. > I don't understand how it can be.
Setting up a 100M connection is much simpler than setting up a 1G connection. It is not surprising that it would be quicker to setup a 100M when you have auto-negotiation enabled on both ends. There are 4 channels per direction versus the 1 in the case of 100M, there is a broader spectrum in use versus the 100M, there is the auto MDI-X which you have to do with 1G, that you don't have to do with 100M. There end up being a ton of differences that make link setup much more expensive and time consuming for a 1G link. You can refer to the Wikipedia link below for more info: https://en.wikipedia.org/wiki/Ethernet_over_twisted_pair Thanks. - Alex ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
