search for: cbq

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 $DEV parent 1: classid 1:1 cbq … tc class add dev $DEV parent 1:1 classid 1:10 cbq … tc class add dev $DEV paren...

If I create a cbq qdisc as a leaf of a cbq class, the bandwith rate is the same of the root cbq qdisc or the rate of the cbq class? Does exist the parameter rate on the "tc qdisc add" for cbq command? tc qdisc add dev eth0 root handle 1:0 cbq bandwidth 10mbit avpkt 1000 cell 8 tc class add dev eth0...

Hi Stef and Alexey I have read some documents about CBQ algorithm from http://www.icir.org/floyd/cbq.html but still have some question about CBQ in Linux . 1. First estimator can estimate how much bandwidth already USED per class. one estimating algorithm is EWMA (exponential weighted moving average), how about Linux implemenatation about estimator? a...

Hello, Does anyone know when one should use cbq versus (simpler more accurate) htb? Specifically does cbq have added functionality that may be of interest to certain applications? from htb home> Both CBQ and HTB help you to control the use of the outbound bandwidth on a given link. Both allow you to use one physical link to simulate seve...

Hi, In my LAN Iam trying to make following setup: - All the traffic generated by 10.0.2.1 should go to 10.0.2.11, If the destination of this traffic is internet than it should be placed on its interface eth1. Outgoing traffic on eth1 should be shaped.For this I am using fw filters and cbq. _______ 10.0.2.1 -------> 10.0.2.11(eth0 )----| A |----- 10.0.2.22(eth1) ----------- On machine "A" , I run following commands: ## mark all the traffic coming from 10.0.2.1 by 1 ## iptabl...

Hi Stef, Reffering to page < http://www.docum.org/stef.coene/qos/faq/cache/7.html > I found a para as follows, " CBQ is not always as accurate as it should be. See docum.org on the test page for some tests with bounded classes. The algorithm used by cbq is very "link sensitive". It calculates the link idle time and for that it needs the real link bandwidth, average packet size and some other paramet...

Hi i need a cbq configuration that works and drops packets if the flow exceeds an amount of data.. Do u have any configuration that drops packets...? My cbq configuraion doesnt drop packets... The traffic use the correct class but seems that tha cbq is not able to control correct the flow ____________________...

Hello Everyone :), i''m using cbq.init version 7.1 for traffic shaper, the rule did work well with flat rule (without parent/child)..here the condition of my network : - have a DMZ (and i not want the traffic to DMZ be bounded) - i made the CBQ engine also a bridge and i put...

Hello all, I am testing CBQ and HTB these days and I got a lots problem which needs your help. It is a little long text :) Thank you! (All my test is based on Redhat Linux9.0) 1.Is isolated of CBQ working? I have read Mr. stef word that he never made cbq isolated work. 2. I have setup an environment to test cbq: one tcp...

Hi folks. For quite a while, I tried to use linux (cbq and htb) to control bandwidth in order to replace a cisco equipment used to play this role on our network. After trying here and there, with a bunch of different distros, different versions, different compilations, ... the closest I could get was as follows: (using htb.init and cbq.init) Desired...

Hi all, I''m having some problems setting up qdiscs on a bridge.The config looks a little like this: ifconfig ifb0 up # Bring up the IFB for this bridge. tc qdisc add dev eth2 ingress tc qdisc add dev eth3 ingress tc qdisc add dev ifb0 root handle 1:0 cbq bandwidth 100Mbit avpkt 1000 cell 8 # Raw qdiscs on each bridge port tc qdisc add dev eth2 root handle 1:0 cbq bandwidth 100Mbit avpkt 1000 cell 8 tc qdisc add dev eth3 root handle 1:0 cbq bandwidth 100Mbit avpkt 1000 cell 8 tc filter add dev eth2 parent 1: protocol 0x8100 prio 5 u32 match u16 300...

...oth computers are downloading files at the same time, they need to never be more than 384Kbit together. I want to attach the qdisc on eth1 (and no one on each VLAN ex. eth1.1, eth1.2, eth1.3 ...) so all VLAN traffic will be processed. The config: # root qdisc tc qdisc add dev eth0 root handle 1:0 cbq bandwidth 100Mbit avpkt 1000 cell 8 tc qdisc add dev eth1 root handle 1:0 cbq bandwidth 100Mbit avpkt 1000 cell 8 # root class tc class add dev eth0 parent 1:0 classid 1:1 cbq bandwidth 100Mbit rate 384Kbit weight 38Kbit prio 8 allot 1514 cell 8 maxburst 20 avpkt 1000 bounded tc class add dev eth1...

...iver 2001 send cbr 64 5 60.0 rsvp 20.0 sync 0 HOST2-RECEIVER CONFIG: #alias sender 192.85.3.2 #alias receiver 192.85.4.1 flow udp 192.85.3.2 2001 192.85.4.1 2000 recv rate sinkrate rsvp 100 RSVP.CONF: - all nodes have the corresponding settings api 4000 interface eth1 refresh 10000 tc cbq 1000000 2500 CBQ SCRIPT: $TC qdisc add dev $DEVICE root handle 1: cbq \ bandwidth $RATE avpkt 1000 mpu 64 $TC class add dev $DEVICE parent 1:0 classid :1 est 1sec 8sec cbq \ bandwidth $RATE rate $RATE allot 1514 maxburst 50 avpkt 1000 $TC class add dev $DEVICE parent 1:1 classid :2 est 1sec 8se...

Hello, I'm usign Kernel 2.2.19 with ext3 0.0.7b patches. I'm also using cbq to control bandwidth. The cbq is correctly creating the classes and queueing disciplines but, whenever I call cbq stop I get a kernel panic: > Aiee, killing interrupt handler > Kernel panic: Attempted to kill idle task! > In interrupt handler - not syncing The exact line in cbq scrip...

...RES=0x00 ACK FIN URGP=0 Jun 8 14:18:51 fs-linux kernel: FORWARD MARK : IN=eth0 OUT=eth1 SRC= 200.244.104.10 DST=192.168.253.3 LEN=40 TOS=0x00 PREC=0x00 TTL=116 ID=7042 PROTO=TCP SPT=50675 DPT=4662 WINDOW=64952 RES=0x00 ACK FIN URGP=0 So it''s look like mark is working . So now I use the cbq.init script with that configuration : cat /etc/sysconfig/cbq/cbq-0002.emule_in DEVICE=eth0,100Mbit,10Mbit RATE=3Kbit WEIGHT=1Kbit PRIO=5 BOUNDED=yes ISOLATED=yes MARK=2 cat /etc/sysconfig/cbq/cbq-0002.emule_out DEVICE=eth1,100Mbit,10Mbit RATE=3Kbit WEIGHT=1Kbit PRIO=5 BOUNDED=yes ISOLATED=yes MA...

Hi All, I cross compiled and run tc in arm platform. When I tried executing it I got this error. tc qdisc add dev eth0 root handle 1:0 cbq bandwidth 100Mbit avpkt 1000 mpu 64 RTNETLINK answers: Invalid argument Is there something I''m missing here... Thanks. Grace _______________________________________________ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc

While I''m thinking about that review of howto changes, here are a few other responses about things I don''t believe. I''ll be interested in more info if anyone has any. ==== [from new doc] Besides being classful, CBQ is also a shaper and it is in that aspect that it really doesn''t work very well. It should work like this. I''ve not noticed that it doesn''t work well. Perhaps cause I''m accidentally using the right parameters? If you try to shape a 10mbit/s connection to 1mb...

I find the negative attitude toward CBQ to be distracting and non-professional in the HOWTO. I''ve re-read it for the first time in about a month and comments like "This can be configured in a variety of ways, which I do not understand. Use HTB" do not encourage me about the writer. This is not a personal critique...

Hi everyone, This is on a linux box, ingress (eth1) at 100Mb/s and egress (eth0) at 10Mb/s. The purpose is to test CBQ Here is my script ------------------------------------------------------------------- # Root qdisc tc qdisc add dev eth0 root handle 1:0 cbq bandwidth 9Mbit \ avpkt 1000 cell 8 # Classes tc class add dev eth0 parent 1:0 classid 1:1 cbq bandwidth 9Mbit \ rate 5Mbit weight 0.3 allot 1514 avpkt...