similar to: htb and tbf theoritical basis

Hello mailing list, i stand bevor a mystery and cannot explain it J. I want to do shaping and prioritization and I have done these following configurations and simulations. I can´t explain, that the combination of PRIO and TBF is much better than the HTB (with the prio parameter) alone or in combination with the SFQ. Here are my example configurations: 2 Traffic Classes http (80 = 0x50) and

Hi have set the following tbf tc qdisc add dev eth0 root tbf rate 0.5mbit \ burst 5kb latency 70ms peakrate 1mbit \ minburst 1540 I want to add a filter so the ip traffic pass from it.. plz help me __________________________________ Yahoo! Mail Stay connected, organized, and protected. Take the tour: http://tour.mail.yahoo.com/mailtour.html

Hi i have found a problem related with tbf and the latency that the tbf calculates.. I have used the following parameters for burst and limit burst 100Kbit limit 500Kbit lat81.8ms burst 6Kbit limit 6Kbit lat 0us burst 200Kbit limit 100Kbit lat 4294.9s As u can see in the 3rd column the latency for 100Kbit burst and 500Kbit limit is 81.8ms but for 200Kbit and limit 100Kbit is 4294.9s!!! How

Im experimenting with using a Linux machine with 3 interfaces to operate as a core router. All links and network interfaces are 100mbit. Below is a ascii diagram of the network. (network A) edge router ------>core router---->edge router (network C) ^ | | edge router (network B) I have tried two

The manual says (about prio): > Because it doesn''t actually shape, the same warning as for SFQ holds: > either use it only if your physical link is really full or wrap it > inside a classful qdisc that does shape. The latter holds for almost all > cable modems and DSL devices. I want to wrap prio inside of tbf. Here''s why: I have a server on a DSL line, which has

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

Hi I have now my outgoing traffic shaped whith root qdisc htb (where i configure basic rate) and tc prio (as a leaf with 4 classes) where i can set priority of different kinds of traffic. It works but htb is work-conserving so packets are only delayed (when the rate is exceeded), while i want them dropped. In the case when rate is exceeded i want to drop packets with priority set to 4, then if

Good morning i want to enable some debug messages concering htb and gred. The reason is that i want to see the journey of the ip packet through the 2.6 kernel from the start to finish (ethernet interface up to htb and gred classification). In the sch_htc.c i have found the following /* debugging support; S is subsystem, these are defined: 0 - netlink messages 1 - enqueue 2 - drop &

Hi, i''m newbie with traffic control. I create a script based in one from Jason Boxman (thx a lot). the upload flow is prioritized well, but when i download from a site, the down flow vary a lot from 25 KB to 4 KB. Before i use this script the downloads are constant between 22 an 25 KB. Perhaps there''s something wrong in my script ? I paste it, thx.

Hi, Im trying to delete an htb class using tc... but i get the following error RTNETLINK ANSWERS: Device or resource busy What could be the problem? I had attached a tbf to it and removed it prior to removing the class.. i tried to delete the class without deleting the qdisc also.. both cases it fails.. Any help regarding this will be most appreciated.. Thanks in advance, Sanjeev R --

Hi, Can you please explain to me the difference between rate and peakrate, in conjucture to TBF. IMHO, rate : controls the no. of pkts flowing through the pipe, and peakrate : controls the no. of tokens flowing through the bucket. A funtion(?) of peakrate and mtu is rate. If this is true, why do I need to specify both peakrate and rate? Regards, suraj. __________________________________ Do

Can I attach a SFQ qdisc after a TBF qdisc?

I''m trying to fill a token bucket with enough tokens to burst several gigs of data. However, it doesn''t seem to get any higher than ~3.9GB: >tc qdisc add dev eth0 root tbf rate 1440kbit latency 50ms \ burst 16000000000 >tc qdisc show dev eth0 qdisc tbf 800b: rate 1440Kbit burst 3908420240b lat 2197.8s A smaller attempt of ~1.6 gigs works just fine: >tc qdisc

Hello, Currently I use following htb configuration: --------------- 1:0 ----------- / | \ 1:1 1:2 1:x / | \ / | \ / | \ 1:1001 1:2001 1:3001 1:1002 1:2002 1:3002 Classes like 1:1,1:2,1:3 limit my clients to some value, let''s say 128kbit/s. Classes like 1:1001 are

Dear friends, thanks for the last advices about TBF. After reading the tbf.pdf document I got a better insight of the problems I had trying to limit the bandwith on my testbed with a high resolution. The question I have now is: Would I get an immediatly better resolution result if I change the #define HZ to 1000 for my Linux box? I have a Pentium Celeron 700 MHz, and I would like to see the tbf

Hi all! I just started to experiment with bandwidth management using tbf. I have the folowing problems with token understanding: 1) What unit is token? Is "1 token = 1 byte" ? If this is so, then with rate=0.5mbit and HZ=100 the bucket gets filled with 0,64kb (655 tokens) every 10ms? 2) How much tokens are used for one packet (1500)? 3) And token unrelated question. Does

I am using tbf to do bandwidth limitation. i found that when i start passing traffic there is a burst and then the rate goes down to what is configured. is this a known issue or do i need to change some parameters? thanks. --------------------------------- Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. _______________________________________________ LARTC mailing list

Hi, New to traffic shaping I would like to make some tests. It''s for a production server (fw), using 2.4.27 kernel. Something is not clear to me about HTB... is the last stable version included in the 2.4.27 kernel and iproute2 (iproute2-2.6.8-040823.tar.bz2) ? Are there special patches to apply ? EC. _______________________________________________ LARTC mailing list /

Hello, i have a server (486sx and 16ram). It gives me this error : NETDEVICE WATCHDOG eth1 : ...timeout. I checked in many places for solutions. Even wrote to this mailinglist. But lately i recived information, that too much upload may mix my adsl modem up. So..... my question is how should my script look while the situation is : eth0 - connected to adsl modem and thus to internet eth1 -

Hi, I am currently using TC for setting up user MAC based filters,and I am seeing a problem when I try to assign different priorities to the MAC Match filter apart from the root qdisc and parent class. Here is my script. /*****************************************************/ First of all I create the qdisc and class based on priority 2 and also the Hash mask tc qdisc add dev eth1 root handle