Hello all,
I am with a doubt about QoS solution... I have a 4 Mbit backbone
coming from the telco I use... This is the link I serve to my clients,
so I make this classes:
$TC qdisc add dev $DL root handle 1: htb default 60
CLASS="/sbin/tc class add dev $DL parent"
$CLASS 1: classid 1:1 htb rate 4096Kbit
$CLASS 1:1 classid 1:10 htb rate 256Kbit ceil 3072Kbit burst 15k
$CLASS 1:1 classid 1:20 htb rate 256Kbit ceil 1024Kbit burst 15k
$CLASS 1:1 classid 1:30 htb rate 2048Kbit ceil 3072Kbit burst 15k
$CLASS 1:1 classid 1:40 htb rate 256Kbit ceil 512Kbit burst 15k
$CLASS 1:1 classid 1:50 htb rate 256Kbit ceil 256Kbit burst 15k
$CLASS 1:1 classid 1:60 htb rate 1024Kbit ceil 2048Kbit burst 15k
I use this classes to put some trafic (going out thru eth3, the
interface that my clients are connected) like this:
10 - ssh, telnet
20 - voip, msn login, skype, dns
30 - http, https, clientes with garantee band
40 - mail, ftp
50 - p2p
60 - all the rest
The problem is that I have a network server connected into my
gateway by a switch. So I have this topology:
router
|
|- ns1 - eth0 (gw) <> eth3 - clients
|- ns2 (mail server / radius server)
So when my clients try to connect to my ns2 mail server it gets
shapped by class 40... I dont want that to happens... So I think in
making something like this:
$TC qdisc add dev $DL root handle 1: htb default 60
CLASS="/sbin/tc class add dev $DL parent"
$CLASS 1: classid 1:1 htb rate 100Mbit
$CLASS 1:1 classid 1:5 htb rate 100Mbit
$CLASS 1:1 classid 1:10 htb rate 256Kbit ceil 3072Kbit burst 15k
$CLASS 1:1 classid 1:20 htb rate 256Kbit ceil 1024Kbit burst 15k
$CLASS 1:1 classid 1:30 htb rate 2048Kbit ceil 3072Kbit burst 15k
$CLASS 1:1 classid 1:40 htb rate 256Kbit ceil 512Kbit burst 15k
$CLASS 1:1 classid 1:50 htb rate 256Kbit ceil 256Kbit burst 15k
$CLASS 1:1 classid 1:60 htb rate 1024Kbit ceil 2048Kbit burst 15k
And them direct all traffic coming from my ns2 server (using u32
classifier and src address) to class 1:5...
Is this correct?
Att,
Nataniel Klug
Nataniel Klug <nata <at> cnett.com.br> writes:> > Hello all, > > I am with a doubt about QoS solution... I have a 4 Mbit backbone > coming from the telco I use... This is the link I serve to my clients, > so I make this classes: > > $TC qdisc add dev $DL root handle 1: htb default 60 > > CLASS="/sbin/tc class add dev $DL parent" > $CLASS 1: classid 1:1 htb rate 4096Kbit > $CLASS 1:1 classid 1:10 htb rate 256Kbit ceil 3072Kbit burst 15k > $CLASS 1:1 classid 1:20 htb rate 256Kbit ceil 1024Kbit burst 15k > $CLASS 1:1 classid 1:30 htb rate 2048Kbit ceil 3072Kbit burst 15k > $CLASS 1:1 classid 1:40 htb rate 256Kbit ceil 512Kbit burst 15k > $CLASS 1:1 classid 1:50 htb rate 256Kbit ceil 256Kbit burst 15k > $CLASS 1:1 classid 1:60 htb rate 1024Kbit ceil 2048Kbit burst 15k >...> So when my clients try to connect to my ns2 mail server it gets > shapped by class 40... I dont want that to happens... So I think in > making something like this: > > $TC qdisc add dev $DL root handle 1: htb default 60 > > CLASS="/sbin/tc class add dev $DL parent" > $CLASS 1: classid 1:1 htb rate 100Mbit > $CLASS 1:1 classid 1:5 htb rate 100Mbit > $CLASS 1:1 classid 1:10 htb rate 256Kbit ceil 3072Kbit burst 15k > $CLASS 1:1 classid 1:20 htb rate 256Kbit ceil 1024Kbit burst 15k > $CLASS 1:1 classid 1:30 htb rate 2048Kbit ceil 3072Kbit burst 15k > $CLASS 1:1 classid 1:40 htb rate 256Kbit ceil 512Kbit burst 15k > $CLASS 1:1 classid 1:50 htb rate 256Kbit ceil 256Kbit burst 15k > $CLASS 1:1 classid 1:60 htb rate 1024Kbit ceil 2048Kbit burst 15k > > And them direct all traffic coming from my ns2 server (using u32 > classifier and src address) to class 1:5... > > Is this correct?I don''t think so. Class 1:5 can now take all bandwidth of dev here. You should limit it''s rate and a ceil as a minimum, but I think you would better add it as another root class: CLASS="/sbin/tc class add dev $DL parent" $CLASS 1: classid 1:1 htb rate 4096Kbit $CLASS 1: classid 1:5 htb rate 95Mbit $CLASS 1:1 classid 1:10 htb rate 256Kbit ceil 3072Kbit burst 15k $CLASS 1:1 classid 1:20 htb rate 256Kbit ceil 1024Kbit burst 15k $CLASS 1:1 classid 1:30 htb rate 2048Kbit ceil 3072Kbit burst 15k $CLASS 1:1 classid 1:40 htb rate 256Kbit ceil 512Kbit burst 15k $CLASS 1:1 classid 1:50 htb rate 256Kbit ceil 256Kbit burst 15k $CLASS 1:1 classid 1:60 htb rate 1024Kbit ceil 2048Kbit burst 15k And have a look at this bautiful page: http://luxik.cdi.cz/~devik/qos/htb/manual/userg.htm The second advice is to lower you numbers. Probably this rates are only nominally like this and in reality min. 10% lower. If you don''t limit it yourself they will be limited elsewhere and you will have higher delays. 15k burst is also quite high so possible next delays. Mr Devera has very good advices there. Jarek P.