my ip and tcp checksums should be correct, but i'll check it out. Could you point me in the direction of an ACTIVE mailing list with traffic shaping guys? The ones I found were pretty much abandoned.
thanks! On Sun, Jun 5, 2011 at 7:59 PM, Aaron Turner <[email protected]> wrote: > On Sun, Jun 5, 2011 at 12:29 AM, Adam Katz <[email protected]> wrote: > > First of all, thanks for the quick reply. > > > > Well, I am using Linux, sorry for not mentioning that explicitly. tc is > the > > built in linux utility for (among other things) traffic shaping... it's a > > pretty useful piece of software. I use it to create three output queues > on > > eth0 with a scheduler that selects which of them to dequeue. I > immediately > > though of the explanation you gave me and imagined pcap might bypass some > of > > the stack but it doesn't seem that way as packets sent with pcap do show > up > > in those queues I created, they're only not classified correctly and end > up > > in the default queue. > > > > If pcap was completely bypassing the stack, I imagine i would not have > seen > > the packets in the queue at all. > > Correct. If they are getting classified, but not correctly, then I'd > have to guess that the classification rules you're using don't match > the traffic. No idea if it matters, but make sure your IP checksums > are correct. When you captured the traffic, outbound traffic may have > the wrong checksums. > > Other then that, may want to ask the traffic shaping guys. > > > -- > Aaron Turner > http://synfin.net/ Twitter: @synfinatic > http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix & > Windows > Those who would give up essential Liberty, to purchase a little temporary > Safety, deserve neither Liberty nor Safety. > -- Benjamin Franklin > "carpe diem quam minimum credula postero" > - > This is the tcpdump-workers list. > Visit https://cod.sandelman.ca/ to unsubscribe. > - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
