> Hello all, > First I'll state my final goal - In case someone knows an existing piece of > code that does the trick: To use Linux with two network interfaces as a > router and link simulator with the following features: > 1. Limited bandwidth > 2. Specified propagation delay which affects each packet going out of an > interface > 3. Limited bucket size (send buffer) for each interface. > > I know how to do no. 1 using CBQ. What about 2 and 3 ? I haven't seen any > qdisc that deliberately imposes a specified delay. How can the send buffer > size be changed ? I can see its current value in the 'ifconfig' output, > under 'txqueuelen', but I don't know how to modify it. you can try the iptables function.... but your kernel have to update to 2.4
