similar to: Why SFQ?

I''m grappling with a problem that looks like sfq is not working (packets don''t get fairly queued, they appear to be always sent FIFO). My configuration appears to be correct. The machine is running quite an old kernel and if I could convince myself that the sfq code it has is just broken, I''d spend the time to upgrade it. Is there any way to inspect or dump the sfq hash

Hello, Besides a very good functionality, I have a small, yet stressing, problem. Let''s say I have a bandwidth of N bits. I have X clients, everyone with his fixed bandwidth. I create htb qdsics for each client. Each leaf has sfq queueing discipline. A sample config would be like this : tc class add dev eth0 parent 1:2 classid 1:346 htb rate 32Kbit ceil 32Kbit burst 4k

Hello every one! I''m making a project to a discipline in the university and the project is make a Linux router that grants QoS to Multimedia connections (the prof. say we can use Open Source Soft. :) or reinvent the wheel). I have been googeling and googeling and i found the l7-filter in source forge and the spectacular simple language that is TCNG. Well the problem is how can i

Hi All, I''ve been playing with QOS for a short while now and have worked out how to do what I want using HTB. Great queuing discipline btw. My problem is the tc filters I want to setup aren''t working because iptables is getting to the packets first and mangling the src address. The iptables script I am using is MonMotha''s Firewall 2.3.8 and it includes lots of nice

Anyone notices that using sfq qdisc adds latency compared to pfifo? With "sfq perturb 10" ping latency is around 100-120ms, while with "pfifo limit 3" drops to ~10-30ms (qdiscs belong to htb class). I''m missing something or is this expected? { $TC_CLASS parent 1:1 classid 1:20 htb prio 0 rate 900kbit ceil 1000kbit burst 7k $TC_QDISC parent 1:20 handle 200: {pfifo

Hi All, I''ve got an interoffice IPSEC VPN in place that I''m trying to give priority to terminal service (tcp 3389) traffic. I''ve created rules at each end, but have hit a bit of a dillemma. As the data is encrypted I must also give highest priority to protocol 50 otherwise the priority is lost as the packet gets encrypted. When I do this however, I can''t

Hello list. I''ve configured a very simple script to slow down packets coming from a particular IP Address. I''ve used IPTABLES to mark traffic coming from this IP Address, but it does not appear to be working as expected. Let me first describe my system as maybe what I''m doing is beyond what NETFILTER can do. I have one machine that runs all my servers as

Known bug for 32-bit. Workaround is on the net. http://mulps.wordpress.com/2009/05/29/compiling-xen-kernel-2-6-29-2/ Boris ________________________________ From: Mehdi Sheikhalishahi <mehdi.alishahi@gmail.com> To: bderzhavets@yahoo.com Sent: Sun, January 3, 2010 4:25:00 PM Subject: Xenified linux kernel Hi Dear: I am refering to the

Hi, I''m work on traffic shaping and I would like to know if it''s possible to mix differents Queueing Disciplines ?? I would like to combine the proporties of a PRIO discipline with that of a CBQ discipline. I read some documentation and I found nothing about that, can you help me ? I think to try something like that : tc qdisc add dev $DEV root handle 1: cbq … tc class add dev

Dear list: I have a problem I cannot handle yet, and need to solve it as soon as possible. Would be very greatful with anybody who can help me. I have a 512/512 link to internet, that I want to share between several computers. I have eth0, with a public IP address, conected to Internet, and also, eth1, with a private IP address, for network with the surfing computers. I have a main class with

Hi If I use sfq qdisc on a CBQ class I get a lot of dropped packets and the backlog itr almost always to its full value: 128. From the HOWTO I understand that the queue is at 128 packets, and SFQ shows 128/1024 flows , but how can I increase that value ? I have tried ip link set txqueuelen but this only increases the tx queue on the interface. qdisc sfq d468: quantum 1514b limit 128p flows

I am using a server with asterisk and I am trying to prioritize voip traffick -- I am a newbie at this traffic shaping, so please bear with me. I used the script below and what happens is thatall traffic in the bulk class stops after a couple of minutes. Also, should I include the ports for rtp in the filter statements with the ports 5061 and 4569? Note I have a fairly big pipe -- supposed to

Hi to all, i''m following this guide (http://www.opalsoft.net/qos/DS-28.htm), is very detailed, but i''m a bit confused about queuing disciplinse of leaf classes. In this guide the author uses PFIFO (see the scheme that i attached at message) in this way: # tc class add dev eth0 parent 1:21 handle 210: pfifo lmit 10 # tc class add dev eth0 parent 1:22 handle 220: pfifo lmit 10 #

Hello to all, I''ve got some guests that are really beginning to become bandwidth hogs. Some of them are file mirrors, some of them are just simple ftp backup servers. I''d like to try ebtables with my public bridges to try and tame things a bit, and was wondering if anyone has some snippets or scripts they would like to share. I''m new to ebtables, and am finding it a

Hi, I have some interesting problem with htb , I set up root class and sub-classess: $TC qdisc add dev eth0 root handle 1: htb $TC class add dev eth0 parent 1: classid 1:1 htb rate 1990kbit ceil 2000kbit $TC class add dev eth0 parent 1:1 classid 1:10 htb rate 190kbit ceil 200kbit $TC class add dev eth0 parent 1:1 classid 1:11 htb rate 1400kbit ceil 1600kbit $TC class add dev eth0 parent 1:1

Hi all! I''m trying to shape traffic in a dorm''s network (4 mbit symmetrical internet link, about 200 computers, heavy p2p usage). The router is a p4xeon running linux 2.6.9 with the qnet patches (http://kem.p.lodz.pl/~peter/qnet/). When I activate ip_forward I get >20% packet loss and a lot of duplicates. Any ideas? I attach my shaping script. Thank you very much in advance,

Hello. I''m newbie with QoS. I read some articles and I have a question on You. If you have time to spare, it would be great if you reply. Here is my problem. I''m on wireless network(no earnig comunity). We got 2/2Mbit(soon 4/4) for 100 people(sharing link). Not long ago people start screaming that their games don''t work good(lagging). So I add to our qos class games

Hi, Our company''s main line is quite busy the whole day and my shaping is working perfect, however even if I give icmp priority the pings still jump around quite a bit. We do have a backup line which hardly get used only if the main line drops. I''ve set ip rule to route all icmp through that and now the pings are perfect. Will this make a difference for the game players etc,

Hi All, I am using the script below to limit download rates and manage traffic for a certain IP address and testing the results using iperf. The rate that iperf reports is much higher than the rate I have configured for the HTB qdisc. It''s probably just some newbie trap that''s messing things up but I''m buggered if I can see it. The following script is run on the

Hello, I''am successful using a linux (2.4.20) bridge and the cbq.init_v0.7 script for traffic shaping. But I can only use the queuing discipline tbf (LEAF=tbf). If I try use queuing discipline sfq or none then tc applies the rules but no shaping occurs. Is this problem a normal behavior when using bridging ? I tried to use htb.init (using patched tc binary). It accepts the rules but