[altq 1129] Re: Equal bandwidth distribution among hosts in a subnet using ALTQ

[Nicolas Christin <nicolas@cs.virginia.edu>]

Syazwan Hisyam bin Mohamed Ridzwan wrote:

> Is there any way that I can define the parent class to use CBQ and use WFQ on 
> the child class?


	I don't think you can do that with a single interface, but if you cascade 
two interfaces, the first running CBQ, and the second one running WFQ, 
you may be able to achieve what you want to do. In other words, assuming 
you have four classes of traffic what you could have is:

		         router class 4 (WFQ)
				 ^
				 |
				 V
router class 2 (WFQ) <-> Core Router (CBQ) <-> router class 1 (WFQ)

				 ^
				 |
				 V
		         router class 3 (WFQ)

	When I'm saying router here, I mean interface. Now you will most certainly need to adapt 

the above to your particular network.


> I've done something quite silly yesterday. Just want to ask your opinion on 
> this. I plugged in 4 fxp (Intel eepro) network card onto one FreeBSD machine. 
> Set bridging (using sysctl) on fxp0 & fxp1. Then set bridging using netgraph 
> on fxp2 & fxp3 (I don't set bridging using sysctl on fxp2 & fxp3 to avoid 
> mute when loop is detected). I use cross network cable on fxp1 & fxp2. fxp0 
> is connected to the local network. fxp3 is connected to the outside world. 
> Then, I use CBQ on interface fxp2 and WFQ on fxp0. It seems like no problem 
> happened, everyone here can still access the Internet until now. But I'm 
> curious whether WFQ on fxp0 really works or not... OR... should I think of 
> different ways to shape the traffic???

	
	If I'm not mistaken, I think this is pretty much what I just described 
above. It should work, but you can make sure by using altqstat -i 
interface and examining the output.

	--Nick