Can the PF works with the DiffServ DSCP markings in the IP packets?
The idea is do the DSCP marking (classification) as close the source traffic and when the packet through my network, the 'core' routers only put the packets in the correct queue, based on DSCP value (without the need of reclassification).
> Can the PF works with the DiffServ DSCP markings in the IP packets?
> The idea is do the DSCP marking (classification) as close the source > traffic and when the packet through my network, the 'core' routers > only put the packets in the correct queue, based on DSCP value > (without the need of reclassification).
> On 2009/06/04 11:42, Rafael Ganascim wrote: >> Hi list,
>> Can the PF works with the DiffServ DSCP markings in the IP packets?
>> The idea is do the DSCP marking (classification) as close the source >> traffic and when the packet through my network, the 'core' routers >> only put the packets in the correct queue, based on DSCP value >> (without the need of reclassification).
>> Can I with PF do this?
> yes. "pass tos XXX", "match scrub (set-tos XXX)".
> 2009/6/4 Stuart Henderson <s...@spacehopper.org>: > > On 2009/06/04 11:42, Rafael Ganascim wrote: > >> Hi list,
> >> Can the PF works with the DiffServ DSCP markings in the IP packets?
> >> The idea is do the DSCP marking (classification) as close the source > >> traffic and when the packet through my network, the 'core' routers > >> only put the packets in the correct queue, based on DSCP value > >> (without the need of reclassification).
> >> Can I with PF do this?
> > yes. "pass tos XXX", "match scrub (set-tos XXX)".
> On 2009/07/17 09:17, Rafael Ganascim wrote: >> Hi Stuart / List,
>> This option, 'tos XXX' can set TOS values only or can use (and match) >> DSCP values too?
> see the manual, pf.conf(5).
>> 2009/6/4 Stuart Henderson <s...@spacehopper.org>: >> > On 2009/06/04 11:42, Rafael Ganascim wrote: >> >> Hi list,
>> >> Can the PF works with the DiffServ DSCP markings in the IP packets?
>> >> The idea is do the DSCP marking (classification) as close the source >> >> traffic and when the packet through my network, the 'core' routers >> >> only put the packets in the correct queue, based on DSCP value >> >> (without the need of reclassification).
>> >> Can I with PF do this?
>> > yes. "pass tos XXX", "match scrub (set-tos XXX)".
> 2009/7/17 Stuart Henderson <s...@spacehopper.org>: > > On 2009/07/17 09:17, Rafael Ganascim wrote: > >> Hi Stuart / List,
> >> This option, 'tos XXX' can set TOS values only or can use (and match) > >> DSCP values too?
> > see the manual, pf.conf(5).
> Yes, then PF does not support DiffServ... because can set only TOS (not dscp).
oh, I misread your question, I thought you were asking whether it can only set values, or whether it can set _or_ match on the values. whereas you were actually asking about DSCP vs TOS.
TOS and DSCP are alternative uses for the same octet of the TCP header. DSCP is shifted 2 bits along, so you should be able to use tos/set-tos for this if you shift the values accordingly.
e.g. for realtime; DSCP is 0x2e (46), shift it along two bits:
> >> 2009/6/4 Stuart Henderson <s...@spacehopper.org>: > >> > On 2009/06/04 11:42, Rafael Ganascim wrote: > >> >> Hi list,
> >> >> Can the PF works with the DiffServ DSCP markings in the IP packets?
> >> >> The idea is do the DSCP marking (classification) as close the source > >> >> traffic and when the packet through my network, the 'core' routers > >> >> only put the packets in the correct queue, based on DSCP value > >> >> (without the need of reclassification).
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