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Re: Low delay



On Tue, Aug 08, 2000 at 03:48:21PM +0200, Rui Prior wrote:
> I've been experimenting with linux qos support, and found out that even if I
> don't configure any queuing discipline, class or filter, packets with the
> TOS octet containing the value correspondant to "low delay" as per RFC1349
> are always proccessed with higher priority and also have a lower drop rate
> than other packets (in my experiments, 0%).
> My questions:
> 1 - Is this behaviour hardcoded in the TCP/IP stack?

It is hardcoded in the default scheduler.

> 2 - Can it be turned off?

Just use tc to push the pfifo scheduler instead of the default one.

> 3 - Are the other Type of Service bits also interpreted (it wasn't clear
> from my experiments)?

They are all mapped to three bands.


-Andi