Classification and making in QoS
Hi, I have a question related to classification because is it first? And if yes, where it take place? Because I was reading a book and maybe I misunderstand what it says but they say that complex operations are first in the packet so maybe is marking first?
It is complicated for me to get this idea about What is first.
Could you help me please?
The QoS is only applied when you create a QoS policy. The policy is done in 3 steps.
You identify your packets for QoS and Mark them at both Layer 2 and 3 markings so they can be identified at within the network. This is marking is done nearest the source of the traffic flow.
The policy is applied at the inbound or exiting interface of the router.
Traffic that meets the policy will then be prioritized by the QoS policy, when traffic move through the interface.
Let me know if you have additional questions. This is a complex topic.
Cordially,
Ronnie Wong
Edutainer, ITProTV
*if the post above has answered the question, please mark the topic as solved.
**All "answers" and responses are offered "as is" and my opinion. There is no implied support or guarantee by the ITProTV team.
Hi Ronnie, thanks for your reply. I am still confused, specially because reading the OCG in the section about QoS Classification and markin, it says that complex things like marking needs to be carried out early in the life of the packet so I assume that it is close to the source, but where is classification in this process, I mean, Is first classfication or marking and about your reply I guess that marking is the closest to the source, right?,
@alex-gómez said in Classification and making in QoS:
Hi Ronnie, thanks for your reply. I am still confused, specially because reading the OCG in the section about QoS Classification and markin, it says that complex things like marking needs to be carried out early in the life of the packet so I assume that it is close to the source, but where is classification in this process, I mean, Is first classfication or marking and about your reply I guess that marking is the closest to the source, right?
So the logic is that for us to mark it, it has to be classified (identified) first. This is what allows to treat the packets differently than all the packets that flow through a device. So just about everything today happens directly at the interface level. So for the most part the classification is at the switch level using ACLs, which combined into a policy-map.
Cordially,
Ronnie Wong
Edutainer, ITProTV
*if the post above has answered the question, please mark the topic as solved.
**All "answers" and responses are offered "as is" and my opinion. There is no implied support or guarantee by the ITProTV team.
Thank you Ronnie, it´s clear for me now, I got the idea
