On Friday 13 December 2002 00:09, James Ma wrote:
> Hi, All,
>
> I implemented the following qos scripts in my Linux gateway (redhat7.3,
> kernel 2.4.18), put ftp server (10.10.3.49) on one side (eth0 nic) and ftp
> client (10.10.5.3) on the other side (eth1 nic). I tried to up load a file
> (211kbytes) from client to ftp server. I wanted to see a 22kbps
> transmission rate. Quite surprise, the ftp client showed transmission rate
> as 6.8e+02 kbytes/s (211k transmitted in 0.3 seconds). It was the same as
> it without qos implementation. So the conclusion is the QoS was not working
> at all.
>
> Could anybody tell me what's wrong with the setting?
Yes I can. You have a cbq qdisc attached to a cbq class. This will cause
some problems. I did some test about this (www.docum.org on the test page).
It's better to create only classes :
tc qdisc add dev eth0 root handle 10: cbq bandwidth 10mbit avpkt 500
tc class add dev eth0 parent 10:0 classid 10:2 cbq bandwidth 10mbit rate
22kbps $OPTION prio 3 bounded
tc class add dev eth0 parent 10:2 classid 10:10 cbq bandwidth 10mbit rate
11kbps $OPTION prio 3 bounded
tc class add dev eth0 parent 10:2 classid 10:20 cbq bandwidth 10mbit rate
11kbps $OPTION prio3 bounded
If you bound 10:10 and 10:20 they are not able to borrow bandwidth from each
other.
Stef
--
stef.coene@docum.org
"Using Linux as bandwidth manager"
http://www.docum.org/
#lartc @ irc.oftc.net
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