Shaping on satellite can be a bad idea. Depends on who your provider is. Some satellite providers use SCPS http://www.scps.org/ as a means to increase performance. Simply put if you start shaping and drop ACK's you will end up with connections hangs. I am really surprised we do not hear more about SCPS in this forum. On Thu, 2007-03-15 at 12:11 +0300, Randy Wallace wrote: > I've set up Traffic Shaping on a Linux Router. > Using HTB with SFQ, i'm trying to slow down > heavy downloading for 20 subscribers over > a 2048 kbit downlink. I'm classifying internet related > traffic using iptables marking. > > bri0 is my local lan bridge, receiving egress traffic destined for subscribers. > > tc qdisc add dev bri0 root handle 1: htb default 2 > tc class add dev bri0 parent 1: classid 1:1 htb rate 92129kbit ceil 102400kbit > tc class add dev bri0 parent 1:1 classid 1:2 htb rate 90072kbit ceil 92129kbit > tc class add dev bri0 parent 1:1 classid 1:3 htb rate 2048kbit ceil 92129kbit > # Non-Internet Local Lan Traffic > tc qdisc add dev bri0 parent 1:2 handle 2: sfq perturb 10 > # Internet Traffic > tc class add dev bri0 parent 1:3 classid 1:9 htb rate 50kbit ceil 100kbit > # Unknown Internet Traffic > tc qdisc add dev bri0 parent 1:9 handle 9: sfq perturb 10 > # Known Subscribers, based on IP Address, ea. subscriber gets their own class, > # starting with 1:10 (a script populates the classes for me) > tc class add dev bri0 parent 1:3 classid 1:(10->X) htb rate 100kbit ceil 400kbit > tc qdisc add dev bri0 parent 1:(10->X) handle (10->X): sfq perturb 10 > > Then the classifier: > # Send Internet traffic, marked 3, to Class 1:3 > tc filter add dev bri0 protocol ip parent 1: prio 1 handle 3 fw flowid 1:3 > # Send traffic, based on dest. IP to their corresponding classes > tc filter add dev bri0 protocol ip parent 1: prio 1 u32 match ip dst > 10.200.0.(2->X)/32 flowid 1:((2->X) + 10) > > Does this look like a good solution? Can this really slow down heavy downloads, > so all subscribers can at least get ..some.. traffic? Does traffic > shaping, not > policing, also drop packets when a HTB class exceeds it's rate, or does it just > wait until there are enough tokens? > > Thank you for any guidance.. > Randy > _______________________________________________ > LARTC mailing list > LARTC@xxxxxxxxxxxxxxxxxxx://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
