There is a Coffee Shop providing Free Wifi. Every now and again some geek turns up, buys one coffee, sits in the back corner for 4 hours and the WiFi performance sux.
Limit the impact that an anonymous individual can have on performance
DHCP will assign an IP address to many anonymous devices coming and going
| DHCP | |
|---|---|
| ☑ LAN DHCP Server Enabled | |
| DHCP range Start 192.168.1.50 End: 192.168.1.249 | |
| Lease Time: 1 hours | 
Limit the total download by each customer.
| Bandwidth Quotas | |
|---|---|
| All Individual Hosts Without Explicit Quotas | Max Total Up+Down = 200MB/day | 
Limit the performance impact of one greedy customer on other customers.
| QoS (Upload) – Classification Rules | |
|---|---|
| ☑ Enable Quality of Service (Upload Direction) | |
| QoS (Download) – Classification Rules | |
|---|---|
| ☑ Enable Quality of Service (Download Direction) | |
| QoS (Download) – Active Congestion Control | |
| ☑ Enable active congestion control (Download Direction) |