On Wed, 2010-12-08 at 09:37 -0600, David G. Mackay wrote: > On Wed, 2010-12-08 at 10:01 +0100, David Sommerseth wrote: > > Nope, ARP is gone. But it gets a replacement as a part of IPv6, instead > > of ARP being an addition to IPv4. > > <http://itkia.com/how-to-arp-a-in-ipv6/> > > <http://www.tcpipguide.com/free/t_TCPIPIPv6NeighborDiscoveryProtocolND.htm> > I have a question about how IPV6 interacts with the switches in the > local network. Right now, my sub $50(US) gigabit switch from any of > several vendors keeps an arp table to determine which switch port a > message will use. With the huge address space available with IPV6, how > is that going to work, and when am I going to get a cheap soho switch > that can handle IPV6? The switch will continue to operate using the MAC# of the client interfaces. The switch doesn't care about IPv4, IPv6, or IPX for that matter [unless you enabled vLANs or managment features - which is a different issue]. The switch does not maintain an "arp table". It maintains a list of MAC#s it has seen on each port.