I am also planing to come to your wireless bootcamp in 2014. > On Dec 30, 2013, at 3:58 PM, Jeff Rensink <[email protected]> wrote: > > Yes, I do all of the wireless classes. I'd love to see you at one. > > Regards, > > Jeff Rensink : Sr Instructor : iPexpert > CCIE # 24834 :: Wireless / R&S > :: World-Class Cisco Certification Training > > Direct: +1.810.326.1444 > :: Free Videos > :: Free Training / Product Offerings > :: CCIE Blog > :: Twitter > > >> On Mon, Dec 30, 2013 at 3:21 PM, Andre Aubet <[email protected]> wrote: >> Thanks Jeff for this answer. Once again you provide good tips for the lab >> preparation! >> >> Sorry to ask so many questions... I'm working with your VoD courses, and all >> seems so clear and easy when you explain, that I need to ask myself a >> thousand questions to be sure I won't forget a thing :) >> Easy things to get are the easiest to forget! >> >> Your videos are really great btw, I hope I will have the opportunity to >> participate to a One Week Lab Experience. Are you the instructor for this >> bootcamp too? >> >> >> 2013/12/30 Jeff Rensink <[email protected]> >>> Ultimately it depends on your QoS policy. For the lab, you'd probably hit >>> one of two scenarios if they want you to configure specific mappings... >>> >>> Scenario 1- Ensure voice markings are preserved throughout your network >>> >>> If they only care about voice traffic, then we just need to pay attention >>> to call control and audio packets. Audio should always have a mapping >>> between CoS 5 and DSCP 46/EF. For call control, it will always be CoS 3, >>> but the DSCP could either be 24 or 26, just depending on what standard they >>> are going with. Most recent QoS docs mention 24/CS3, so I'd go with that >>> as my default choice unless they specify that they are using 26/AF31. >>> >>> For this, the default DSCP-to-CoS table is just fine as is. The >>> CoS-to-DSCP table should be changed to map 5 to 46 and possibly 3 to 26 >>> if specified. >>> >>> Scenario 2- ensure QoS markings are preserved based on a custom mapping >>> (not voice specific) >>> >>> Here, they are trying to enforce CoS/DSCP mapping based on some customized >>> scheme. They would have to list out any specific mappings that they would >>> want you to do. Any mappings not mentioned should probably left at their >>> defaults. >>> >>> They may give you a 1-to-1 mapping of CoS and DSCP. Make sure that you >>> have the mappings working in both directions. >>> >>> Or they could give you a 1-to-many mapping where 1 CoS value maps to >>> multiple DSCP values. If they did something like this, they would have to >>> mention which specific DSCP should be specified in the CoS-to-DSCP table. >>> Otherwise, make sure all DSCP values mentioned map to the appropriate CoS >>> value. >>> >>> >>> Regards, >>> >>> Jeff Rensink : Sr Instructor : iPexpert >>> CCIE # 24834 :: Wireless / R&S >>> :: World-Class Cisco Certification Training >>> >>> Direct: +1.810.326.1444 >>> :: Free Videos >>> :: Free Training / Product Offerings >>> :: CCIE Blog >>> :: Twitter >>> >>> >>>> On Mon, Dec 30, 2013 at 10:55 AM, Andre Aubet <[email protected]> wrote: >>>> Hello! >>>> >>>> Still on the qos part :) >>>> >>>> Jeff, in your video "Wired QoS", you explain the tuning of cos-dscp map is >>>> needed. Particularly, the following values need to be overwritten: >>>> Voice : cos 5 => dscp = 46 (EF) >>>> Voice Control : cos 3 => dscp = 24 (CS3) >>>> For the CCNP studies, i used to have the following values in mind: >>>> >>>> <image.png> >>>> >>>> And for the default mapping: >>>> >>>> <image.png> >>>> >>>> So it could be useful to redefine cos 4, 2 and 1 as well? >>>> >>>> Or do we need to redefine these values only when Gold or Bronze Profile >>>> are used? >>>> >>>> >>>> >>>> _______________________________________________ >>>> Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: >>>> >>>> iPexpert on YouTube: www.youtube.com/ipexpertinc >>> >> > > _______________________________________________ > Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: > > iPexpert on YouTube: www.youtube.com/ipexpertinc
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