[LARTC] How to add multiple filters and netem rules on a single interface?

[Andy Furniss]

Andy Furniss wrote:
> Jon Pedersen wrote:
> 
>> Hi!
>>
>> We want to run TCP streams to several port numbers through one interface,
>> each with a different delay set by Netem.
>> E.g. TCP streams to port 80 could have 50ms delay, while TCP streams 
>> to port
>> 81 could have 100 ms delay and so on.
>>
>> We have tried to solve this by using a combination of tc filter and netem
>> rules, but we can't get it quite right.
>> We are considering one class per port, each with their own Netem delay 
>> and
>> the following filter:
>>
>> tc filter add dev eth0 protocol ip parent (?) prio 1 u32 match ip 
>> protocol 6
>> 0xff match u16 80 0xffff at 20
>>
>> Is this possible? If so, how do you create the class hierarchy and how do
>> you combine each filter with the netem rule?
> 
> 
> I've only used netem for simple stuff so am not sure if it's possible 
> this way or not.
> 
> Another way to try would be to use multiple ifbs and filter the 
> different traffic to those.
> 
> Andy.
> 
> 
> 
> 
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