Re: strict priority

["Alexander Sirotkin" <demiourgos@xxxxxxxxx>]

On 3/28/07, Flechsenhaar, Jon J <Jon.J.Flechsenhaar@xxxxxxxxxx> wrote:
> Alex:
>
> 1.
> ~ tc qdisc add dev eth0 root handle 1: prio bands 4
> This command created 4 priority classes 1:1 - 1:4
>
> 2. Attach your pfifo qidisc to these so basically not on the 1:0
>
> ~ tc qdisc add dev eth0 parent 1:0 handle 10: pfifo limit 100
>         - should be tc qdisc add dev eth0 parent 1:1 handle 10: pfifo
> limit 100
> 3.
>         filter traffic to 1:1 - 1:4 NOT ON THE PFIFO qdisc
>   so...
>         ... Flowid 1:1 not 10
>
> Hope this helps.

Thanks a lot, it did the trick.
In this configuration, 10: will have the highest priority and 40:
lowest, right ?


> Jon Flechsenhaar
> Boeing WNW Team
> Network Services
> (714)-762-1231
> 202-E7
>
> -----Original Message-----
> From: Alexander Sirotkin [mailto:demiourgos@xxxxxxxxx]
> Sent: Wednesday, March 28, 2007 9:13 AM
> To: lartc@xxxxxxxxxxxxxxx
> Subject:  strict priority
>
> I'm trying to configure 4 queues with strict priorities based on DSCP.
> I tried to following commands, but it seems that the filters I defined
> have no effect
>
> tc qdisc add dev eth0 root handle 1: prio bands 4 tc qdisc add dev eth0
> parent 1:0 handle 10: pfifo limit 100 tc qdisc add dev eth0 parent 1:1
> handle 20: pfifo limit 100 tc qdisc add dev eth0 parent 1:2 handle 30:
> pfifo limit 100 tc qdisc add dev eth0 parent 1:3 handle 40: pfifo limit
> 100 tc filter add dev eth0 parent 1:0 protocol ip prio 1 u32 match ip
> tos
> 224 0xff flowid 10:
> tc filter add dev eth0 parent 1:0 protocol ip prio 2 u32 match ip tos
> 160 0xff flowid 20:
> tc filter add dev eth0 parent 1:0 protocol ip prio 3 u32 match ip tos 0
> 0xff flowid 30:
> tc filter add dev eth0 parent 1:0 protocol ip prio 4 u32 match ip tos
> 32 0xff flowid 40:
>
> Any suggestions ?
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