<div dir="ltr">On Sun, Jan 25, 2015 at 12:17 PM, <span dir="ltr"><<a href="mailto:dpreed@reed.com" target="_blank">dpreed@reed.com</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><font face="tahoma"><p style="margin:0;padding:0;font-family:tahoma;font-size:10pt;word-wrap:break-word"><span style="font-size:10pt">There is no reason why one cannot set up an enterprise network to support roaming, yet maintaining the property that IP addresses don't change while roaming from AP to AP. Here's a simple concept, that amounts to moving what would be in the Ethernet bridging tables up to the IP layer.</span><br></p><div>
<p style="margin:0;padding:0;font-family:tahoma;font-size:10pt;word-wrap:break-word"> </p>
<p style="margin:0;padding:0;font-family:tahoma;font-size:10pt;word-wrap:break-word">All addresses in the enterprise are assigned from a common prefix (XXX/16 in IPv4, perhaps). Routing in each access point is used to decide whether to send the packet on its LAN, or to reflect it to another LAN. A node's preferred location would be updated by the endpoint itself, sending its current location to its current access point (via ARP or some other protocol). The access point that hears of a new node that it can reach tells all the other access points that the node is attached to it. Delivery of a packet to a node is done by the access point that receives the packet by looking up the destination IP address in its local table, and sending it to the access point that currently has the destination IP address.</p></div></font></blockquote><div><br></div><div>I'm not familiar with routing protocols. Do any of the current ones do this, or is this an idea for a new protocol?</div><div><br></div><div>-Aaron </div></div></div></div>