Re: Rate limits whithin rate limits

Linux Advanced Routing and Traffic Control

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Leigh Sharpe wrote:
Hi all,
I'm sure I'm soing something wrong here.
I am trying to set up a rate limit inside another rate limit.
eg. I have a 512K rate limit on a particular VLAN. I am using an IFB so
that packets passing through the bridge are counted at each port.(ie the
throughput is limited to 512K, not just the traffic in one direction.)

When I tested this ages ago, it was alot bettter (for useability) to still keep the traffic seperate - and on top of that make big tcp second class.

That was with htb - I don't kow cbq but with htb you could use ceil to further limit traffic classes, you would still need to make sure rates didn't add up to more than parent - it doesn't cap children for htb. I don't know how accurate cbq is or how it chooses queue lengths - you should really specify child queues so you get to decide on q length. HTB/HFSC will choose a really small default on ppp/vlan IIRC IFB is 32 so not quite as bad.

Andy.

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