What do “uphill” and “downhill” mean?
The terms “uphill” and “downhill” are shorthand words used in version 1 of Mini Maxwell to describe a direction for a flow of packets. These terms are no longer used in more recent versions of Mini Maxwell Uphill packets are packets that arrive on PORT0 (LAN-A/eth2) and leave by PORT1 (LAN-B/eth1). Downhill packets are packets that arrive on PORT1 (LAN-B/eth1) and leave by PORT0 (LAN-A/eth2). An easy way to remember this is to imagine PORT0 being lower than PORT1; packets moving from the lower port to the upper port are moving uphill while those moving from the upper port to the lower port are moving downhill.