4 ms·
> Actually, people DO claim that [MAC table limits make IPv4 over Ethernet infeasible]. Flat Ethernet doesn't scale, and you need to use routing to break up br
by greyface- 3y ago
> Actually, people DO claim that [MAC table limits make IPv4 over Ethernet infeasible]. Flat Ethernet doesn't scale, and you need to use routing to break up broadcast domains.
This has nothing to do with unicast MAC table limits, and everything to do with ARP's O(n^2) scaling property. You use just as many MAC table entries in a network with 10 VLANs of 100 hosts as you do with 1 VLAN of 1000 hosts. Ethernet scales fine; ARP doesn't.