Hi! I just tested my HTB setup. But I have a problem. Let's assume I run the following script (even if it might do nothing useful, just for demonstrating my problem): #!/bin/bash /usr/sbin/tc qdisc add dev ppp0 root handle 1: htb default 12 /usr/sbin/tc class add dev ppp0 parent 1: classid 1:1 htb rate 125kbit ceil 125kbit /usr/sbin/tc class add dev ppp0 parent 1:1 classid 1:14 htb rate 125kbit ceil 125kbit prio 0 iptables -A POSTROUTING -t mangle -o ppp0 -p tcp --dport ftp-data -j MARK --set-mark 14 tc filter add dev ppp0 parent 1:0 prio 0 protocol ip handle 14 fw flowid 1:14 I have an adsl-connection (768kbit down/128kbit up), Linux kernel 2.4.20. The script should do nothing to an outgoing ftp-upload, since I grant all the available bandwith to it. No other traffic is happending during all that, only one ftp-upload from a computer inside the LAN. I start the upload without the rules above, and the upload is at a constant maximum of 128kbit/sec. After running the script above and waiting for say 5 seconds, the upload speed drops down to app. 80 kbit/s! After removing the rules above, the speed climbs up again to top speed. Can someone explain to me why this happens? I think I didn't quite understand HTB... Thanks, Robert
On Monday 16 December 2002 18:02, Robert Brueckmann wrote: > Hi! > > I just tested my HTB setup. But I have a problem. Let's assume I run th= e > following script (even if it might do nothing useful, just for > demonstrating my problem): > > #!/bin/bash > /usr/sbin/tc qdisc add dev ppp0 root handle 1: htb default 12 > /usr/sbin/tc class add dev ppp0 parent 1: classid 1:1 htb rate 125kbit = ceil > 125kbit > /usr/sbin/tc class add dev ppp0 parent 1:1 classid 1:14 htb rate 125kbi= t > ceil 125kbit prio 0 > iptables -A POSTROUTING -t mangle -o ppp0 -p tcp --dport ftp-data -j > MARK --set-mark 14 > tc filter add dev ppp0 parent 1:0 prio 0 protocol ip handle 14 fw flowi= d > 1:14 > > I have an adsl-connection (768kbit down/128kbit up), Linux kernel 2.4.2= 0. > The script should do nothing to an outgoing ftp-upload, since I grant a= ll > the available bandwith to it. No other traffic is happending during all > that, only one ftp-upload from a computer inside the LAN. I start the > upload without the rules above, and the upload is at a constant maximum= of > 128kbit/sec. After running the script above and waiting for say 5 secon= ds, > the upload speed drops down to app. 80 kbit/s! After removing the rules > above, the speed climbs up again to top speed. Have you tried with other rates and ceil values? And you defined a default class 12, but there is no such class. Ftp-data can use dynamic ports. So can you check that the iptables line = with=20 "--dport ftp-data" is really catching the ftp packets?? Stef --=20 stef.coene@docum.org "Using Linux as bandwidth manager" http://www.docum.org/ #lartc @ irc.oftc.net