For bandwidth control during reception, packets can be buffered and acknowledged only later. A result of this is that TCP/IP connections automatically regulate themselves to a lower bandwidth.
Each WAN interface is assigned a maximum receive bandwidth. Any QoS rule that guarantees a minimum receive bandwidth on a particular interface will reduce the bandwidth accordingly.
- If the QoS rule is connection-based, immediately after the connection is terminated the reserved bandwidth is released and the maximum available bandwidth on the WAN interface increases accordingly.
- If the QoS rule is defined globally, the reserved bandwidth is released again only after the last connection has been terminated.
