[LARTC] tncg and bandwidth limiting

[Scott Baker <bakers@web-ster.com>]

I think I got a little send happy with the last message and forgot to 
include the "right" configuration. Here is REALLY what we're using. It's 
working in the lab right now, I want to move it into production later. 
Basically ignore that last message.

----------------------------

I'm trying to do some very simple rate-shaping on an interface. I want to 
limit my 100baseT interface to 7 megs both ingress and egress of the 
interface. I've been hacking my way through the documentation and some 
examples and I've come up with the following configuration for tcng that 
seems to do what I want.

I'm curious if some of the other experts out there wouldn't have a "better" 
way to do what I'm doing. I'd like to do HTB ingress as well, but it 
complains that the the ingress qdisc doesn't allow inside classes or 
something like that. I think this will work for me, I just want to make 
sure this is the best way to do things.

----------------------------

dev INTERFACE {
    egress {

       class ( <$all> ) if 1;

       htb () {
          class ( rate 100Mbps, ceil 100Mbps ) ;
          $all = class ( rate 7Mbps, ceil 7Mbps ) ;
       }
    }

    ingress {
       $p = bucket(rate 7Mbps, burst 100kB, mpu 200B);
       class (1) if (conform $p && count $p) || drop;
    }
}


Scott Baker - Network Engineer - RHCE
bakers @ web-ster . com - 503.266.8253  

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