I would like to limit the usage of a 10 MBit internet connection for a specific internal VLAN to 2 MByte (on a Cisco router, IOS 15.3).
Is that possible in general?
How can the router make sure that the incoming/returning traffic from the internet destined to that VLAN will not exceed the desired rate? I.e. if a server is sending back (i.e. file transfers) with a very high rate? Of course the router could just drop everyhting which exceeds the desired rate, but isn´t it too late at that stage, because the WAN link would already been saturated?