Jon [EMAIL PROTECTED] wrote: > Incidentally, it was the vlan(4) man page that gave me the idea to > set the mtu to 1518: > > "Some Ethernet chips will either discard or truncate Ethernet frames > that are larger than 1514 bytes. This causes a problem as 802.1Q > tagged frames can be up to 1518 bytes. Most controller chips can be > told not to discard large frames and/or to increase the allowed frame > size. Refer to the hardware manual for your chip to do this." > > For some reason I thought that meant it would be a good idea to up > the mtu to 1518. >
No, this is not a correct setting. The interface MTU refers to the higher layer object, while the vlan(4) page is talking about frames on the wire. I wrote that into vlan(4) to explain to people how the added 802.1Q tag affects their network drivers, not so users would touch the MTU.
