Ethernet Network Switch
Many devices supported by OpenWrt contain an Ethernet network switch. Most switches are configurable and divers options are available. We require two software components:
a kind of a driver
Ethernet Network Switch models
Qualcomm / Atheros
Note: Atheros Switch-Chips with the 'N' designation include the Hardware NAT function.
some Switches contain a functionality called "Hardware NAT"
; support for this features has not yet been included into OpenWrt. Since the CPU
s used in CPE Routers are relatively slow, expect 2 to 4 times performance gain if you were to use Hardware NAT, e.g. without hardware NAT some router could achieve 400Mbit/s at full CPU load, with hardware NAT it could achieve 900Mbit/s at full CPU load. OpenWrt developer is supposed to have said, that implementing HW-NAT support would be unacceptably hacky to accomplish.