On 9/14/2014 11:20 AM, Matthew Petach wrote: > On Sun, Sep 14, 2014 at 10:45 AM, Sam Stickland <s...@spacething.org> wrote: > >> Slightly off topic, but has there ever been a proposed protocol where hosts >> can register their L2/L3 binding with their connected switch (which could >> then propagate the binding to other switches in the Layer 2 domain)? >> Further discovery requests (e.g. ARP, ND) from other attached hosts could >> then all be directly replied, eliminating broadcast gratuitous arps. If the >> switches don't support the protocol they would default to flooding the >> discovery requests. >> >> It seems to me that so many network are caused because of the inability to >> change the host mechanisms. >> >> Sam >> > > > It looks like in 2011 Cisco proposed a > technology called "OTV" that would do > just that, according to this page: > http://network-101.blogspot.com/2011/03/otv-vs-vpls.html > Granted, it was aimed for wide-area > networking, rather than control within > a datacenter; but as everyone who has > started doing BGP to their top of rack > switches has learned, there's often good > value in adopting techniques and protocols > used in the wide area network within the > datacenter as well. > > However, I haven't heard recent mention > of it, so I'm guessing it failed to make a > big enough splash to get any widespread > adoption. >
Also consider the emergence of eVPN and PBB-eVPN. https://www.ciscolive.com/online/connect/sessionDetail.ww?SESSION_ID=5998&tclass=popup -- ========= bep
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