Re: Problems with traffic shaping (tcng / tc)

[Clemens Eisserer <linuxhippy@gmail.com>]

Does really nobody know wether this does not work? 
Should it work theoretically?

Maybe you could point me where tc/tcng-experienced people are - I do
not want to nerve with this topic since its of course on topic on the
debian users list ;-)

Thanks for your patience, lg Clemens

2005/9/20, Clemens Eisserer <linuxhippy@gmail.com>:
> Hi there,
> 
> I use a old P90 for routing our LAN into the internet, however
> sometimes I want to download large binaries to the server itself which
> may not slow down the internet-connection of the PCs in the LAN.
> 
> I wrote a small tcng-skript which should do the trick - basically
> assign all available bandwith tho the two end-user pcs in the LAN
> (user1, user2) - and only very little minium bandwith to the server
> itself (user3).
> However if I start to download an iso on the server using wget
> browsing is almost impossible on the LAN pcs at all :-(
> Any ideas what could be wrong, since I am very new to tcng it could be
> easily that I made mistakes or misunderstood something.
> Btw. I route the two PCs into the internet doing NAT via iptables.
> 
> Please help, I already tried days to slove it myself but I simply was
> not able to find the problem :-(
> 
> Thank you in advance, lg Clemens
> 
> The tcng-"source":
> 
> #include "fields.tc"
> #include "ports.tc"
> $INTERFACE="ippp0";
> $MAX=75kbps;
> $RATE_USER1=60kbps;
> $RATE_USER2=12kbps;
> $RATE_USER3=3kbps;
> 
> 
> dev $INTERFACE
> {
>   egress
>   {
>     class (<$user1>) if ip_src == 192.168.0.2;
>     class (<$user2>) if ip_src == 192.168.1.2;
>     class (<$user3>) if ip_src == 127.0.0.1;
> 
>     htb ()
>    {
>      class (rate $MAX, ceil $MAX)
>      {
>        $user1 = class (rate $RATE_USER1, ceil $MAX) {sfq;};
>        $user2 = class (rate $RATE_USER2, ceil $MAX) {sfq;};
>        $user3 = class (rate $RATE_USER3, ceil $MAX) {sfq;};
>    }
>   }
>  }
> }
> 
> 
> The resulting tc-skript:
> 
> tc qdisc del dev ippp0 root
> 
> # =============================== Device ippp0 ================================
> 
> tc qdisc add dev ippp0 handle 1:0 root dsmark indices 4 default_index 0
> tc qdisc add dev ippp0 handle 2:0 parent 1:0 htb
> tc class add dev ippp0 parent 2:0 classid 2:1 htb rate 9375bps ceil 9375bps
> tc class add dev ippp0 parent 2:1 classid 2:2 htb rate 7500bps ceil 9375bps
> tc qdisc add dev ippp0 handle 3:0 parent 2:2 sfq
> tc class add dev ippp0 parent 2:1 classid 2:3 htb rate 1500bps ceil 9375bps
> tc qdisc add dev ippp0 handle 4:0 parent 2:3 sfq
> tc class add dev ippp0 parent 2:1 classid 2:4 htb rate 375bps ceil 9375bps
> tc qdisc add dev ippp0 handle 5:0 parent 2:4 sfq
> tc filter add dev ippp0 parent 2:0 protocol all prio 1 tcindex mask 0x3 shift 0
> tc filter add dev ippp0 parent 2:0 protocol all prio 1 handle 3
> tcindex classid 2:4
> tc filter add dev ippp0 parent 2:0 protocol all prio 1 handle 2
> tcindex classid 2:3
> tc filter add dev ippp0 parent 2:0 protocol all prio 1 handle 1
> tcindex classid 2:2
> tc filter add dev ippp0 parent 1:0 protocol all prio 1 u32 match u32
> 0xc0a80002 0xffffffff at 12 classid 1:1
> tc filter add dev ippp0 parent 1:0 protocol all prio 1 u32 match u32
> 0xc0a80102 0xffffffff at 12 classid 1:2
> tc filter add dev ippp0 parent 1:0 protocol all prio 1 u32 match u32
> 0x7f000001 0xffffffff at 12 classid 1:3
>