On Sun, Apr 14, 2002 at 12:26:05PM +0200, bert hubert wrote: > On Sat, Apr 13, 2002 at 05:24:10PM -0400, Jacob Elder wrote: > > I'm trying to prioritize interactive traffic over other traffic on my 56k > > dialup link. I wrote some chains to set the ToS in PREROUTING and OUTGOING, > > and I'm using a PRIO queue with three SFQ children: > > PRIO works just fine - you probably have it configured wrong. I'm sure it does for you guys, that's why I'm asking for help :) > > > iptables -A OUTPUT -t mangle -p tcp --dport ftp-data -j TOS --set-tos Maximize-throughput > > OUTPUT is only for locally generated packets, by the way. To mangle > forwarded packets, use PREROUTING. I know, I'm only worried about my one workstation at the moment. > > > According to tcpdump, the ToS bits are indeed being set like I asked, but > > "watch tc -s qdisc show dev ppp0" shows that everything is going into the > > "througput" queue regardless. The only traffic that increments the counter > > for the "interactive" queue is post-handshake SSH traffic, and from what > > I've read, SSH sets the ToS explicitly. What am I doing wrong? > > I would advise rechecking the output of tcpdump before and after applying > the iptables mangle rules. AIM traffic before: 140.186.55.23.33788 > 64.12.163.214.9898: tcp 68 (DF) And after: 140.186.55.23.33788 > 64.12.163.214.9898: tcp 68 (DF) [tos 0x10] I forgot to mention that I'm running iproute 20010824-6 and kernel 2.4.17, Debian Woody. Did the tc command lines I posted before look alright? -- Jacob Elder http://www.lucidpark.net/
