Re: OT: Catalys 6500 qos policing doubts

Many thanks Marc, but i have found some terrible errors on my configs that
explain why egrress traffic was not properly marked:

ingress interface was native IP, but egress interface was Mpls... i supouse
passing to mpls do not allow marking this way.. what i do is marking EXP
mpls field with "set mpls experimental n" policy-map command, then i made
a class-map matching this mpls experimental and aplied it to the policy-map
that limits the rate at the output and it worked fine.

This is a "software solution" to do the policing at egress, as someone
said maybe using the hardware egress queues is most effective and
rigorous...but i do not know if you can do this with this type of
environment (this is, having mpls as the egress interface)...Do you know if
possible?

Many thanks and regards

2012/5/23 marc edwards <renorider_at_gmail.com>

> I am still in travel. Sorry for delay. I can get to this probably on the
> weekend but two resources I can suggest that may help for understanding the
> syntax, theory, etc. are
>
>
> http://www.youtube.com/watch?v=IA4iOrn2eiU&list=UUa5DwgTjlWMObHDIm6-zv1A&index=2&feature=plcp
>
> This is based off 3560/3750 architecture. 6500's are much different beast
> and also dependent on the line card. I highly recommend getting a
> cisco365.com account and viewing campus QoS and downloading the slide.
> Deck.
>
> I am not copping out and will for sure work on this over the weekend. I
> could benefit from the exercise as well.
>
> Regards,
>
> Marc
>
>
> On Tue, May 22, 2012 at 11:06 PM, Juan <fferrer10_at_gmail.com> wrote:
>
>> Many Thanks, Marc
>>
>> I have 6800 line cards in the Catalyst 6500 with Sup2T, and just using
>> the interfaces of these 68xx cards i need to do qos
>>
>> By the way, i have seen some docs about catalyst qos where this is
>> managed on egress using queues as you said, translating the dscp ingress
>> marked values to Cos values, and these Cos to egress queues where some type
>> of policing is applied... maybe this is the best or most extended solution,
>> but at this moment i also have this doubt, maybe you can help... the dscp
>> values yo set at ingress are "internal dscp" values only used by the
>> catalyst platform or PFC (and then maybe they can not be inspected using a
>> span or similar)?
>>
>> Best Regards.
>>
>>
>>
>> 2012/5/22 marc edwards <renorider_at_gmail.com>
>>
>>> So the most flexibility on catalyst qos is using trust and L2 queuing.
>>> Trust or mark the frame. Hardware ingress egress queuing is also most
>>> effective. I am mobile but will take a moment to look at mappIngs and
>>> propose a config. Hope this will get markings being seen in pcap. Then we
>>> can look to MQC based policy on egress. But even egress queuing is better
>>> played with using third folds a priority queues. I will post tonight or
>>> shortly as I can't ramble off top oft head. Are you on 67xx or 68xx line
>>> cards?
>>>
>>>
>>> On Tuesday, May 22, 2012, Juan wrote:
>>>
>>>> And the "show platform qos maps" output, but it seems it are all the
>>>> default values...
>>>>
>>>> VSS_B30#sh platform qos maps
>>>> policed-discard-class-normal-burst-map:
>>>> (discard-clas
>>>> s= d1d2)
>>>> d1 : d2 0 1 2 3 4 5 6 7 8 9
>>>> -------------------------------------
>>>> 0 : 00 01 02 03 04 05 06 07 08 09
>>>> 1 : 10 11 12 13 14 15 16 17 18 19
>>>> 2 : 20 21 22 23 24 25 26 27 28 29
>>>> 3 : 30 31 32 33 34 35 36 37 38 39
>>>> 4 : 40 41 42 43 44 45 46 47 48 49
>>>> 5 : 50 51 52 53 54 55 56 57 58 59
>>>> 6 : 60 61 62 63
>>>>
>>>> policed-discard-class-max-burst-map:
>>>> (discard-class=
>>>> d1d2)
>>>> d1 : d2 0 1 2 3 4 5 6 7 8 9
>>>> -------------------------------------
>>>> 0 : 00 01 02 03 04 05 06 07 08 09
>>>> 1 : 10 11 12 13 14 15 16 17 18 19
>>>> 2 : 20 21 22 23 24 25 26 27 28 29
>>>> 3 : 30 31 32 33 34 35 36 37 38 39
>>>> 4 : 40 41 42 43 44 45 46 47 48 49
>>>> 5 : 50 51 52 53 54 55 56 57 58 59
>>>> 6 : 60 61 62 63
>>>>
>>>> discard-class-cos-map: (discard-class= d1d2)
>>>> d1 : d2 0 1 2 3 4 5 6 7 8 9
>>>> -------------------------------------
>>>> 0 : 00 00 00 00 00 00 00 00 01 01
>>>> 1 : 01 01 01 01 01 01 02 02 02 02
>>>> 2 : 02 02 02 02 03 03 03 03 03 03
>>>> 3 : 03 03 04 04 04 04 04 04 04 04
>>>> 4 : 05 05 05 05 05 05 05 05 06 06
>>>> 5 : 06 06 06 06 06 06 07 07 07 07
>>>> 6 : 07 07 07 07
>>>>
>>>> discard-class-exp-map: (discard-class= d1d2)
>>>> d1 : d2 0 1 2 3 4 5 6 7 8 9
>>>> -------------------------------------
>>>> 0 : 00 00 00 00 00 00 00 00 01 01
>>>> 1 : 01 01 01 01 01 01 02 02 02 02
>>>> 2 : 02 02 02 02 03 03 03 03 03 03
>>>> 3 : 03 03 04 04 04 04 04 04 04 04
>>>> 4 : 05 05 05 05 05 05 05 05 06 06
>>>> 5 : 06 06 06 06 06 06 07 07 07 07
>>>> 6 : 07 07 07 07
>>>>
>>>>
>>>> cos-discard-class-map :
>>>> cos: 0 1 2 3 4 5 6 7
>>>> ------------------------------------
>>>> discard: 0 8 16 24 32 40 48 56
>>>>
>>>> precedence-discard-class-map :
>>>> ipprec: 0 1 2 3 4 5 6 7
>>>> ------------------------------------
>>>> discard: 0 8 16 24 32 40 48 56
>>>>
>>>> exp-discard-class-map :
>>>> exp: 0 1 2 3 4 5 6 7
>>>> ------------------------------------
>>>> discard: 0 8 16 24 32 40 48 56
>>>>
>>>>
>>>> Regards.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> 2012/5/22 marc edwards <renorider_at_gmail.com>
>>>>
>>>> Just curious is the 'platform' new to ios 15?
>>>>
>>>> platform qos queue-mode mode-dscp
>>>>
>>>> Is that this command?
>>>>
>>>> mls qos queue-mode mode-dscp
>>>>
>>>> To set the queuing mode to Differentiated Services Code Point (DSCP) on
>>>> an interface, use the *mls qos queue-mode mode-dscp*command in
>>>> interface configuration mode. To return to the default settings, use the
>>>> *no* form of this command.
>>>>
>>>> *mls qos queue-mode mode-dscp*
>>>>
>>>> *no mls qos queue-mode mode-dscp*
>>>> Syntax Description
>>>>
>>>> This command has no arguments or keywords.
>>>> Command Default
>>>>
>>>> The queuing mode of an interfaces is class of service (CoS) mode.
>>>> Command Modes
>>>>
>>>> Interface configuration (config-if)
>>>> Command History
>>>> Release
>>>> Modification
>>>>
>>>> 12.2(18)SXF5
>>>>
>>>> This command was introduced.
>>>>
>>>>
>>>>
>>>> What about the show mls qos map dscp? can you do a sh mls qos interface
>>>> or equivalent on the interfaces above?
>>>>
>>>> Marc
>>>>
>>>> On Mon, May 21, 2012 at 11:30 PM, Juan <
>>>>
>>>> --
>>>> Juan Faure
>>>>
>>>
>>
>>
>> --
>> Juan Faure
>>
>
>

-- 
Juan Faure
Blogs and organic groups at http://www.ccie.net