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EC147 - Drag and drop QoS mechanisms
#2
I agree with the following 3 points in the given answer:
  • DSCP => portion of the IP header used to claccify packets
  • CoS => portion of the 802.1Q header used to classify packets
  • Policing => tool to enforce rate-limiting on ingress/egress
...and then I see the following connections:
  • Shaping is a bandwidth management technique which delay datagramms.
  • Service Policy is a mechanism to apply a QoS policy to an interface.
    for example:
    interface serial 1/0
      service-policy output myPolicyMap
  • Policy Map is a mechanism to create a scheduler for packets prior to forwarding.
    for example:
    policy-map MyPolicyMap
     class VIDEO
       bandwidth 256
     class BUSINESS
       bandwidth 256
     class class-default
       fair-queue
    (so here we have queues for different priority data and they need a CBWFQ scheduler)

Agree with my suggestion? And the big question, how does cisco think?
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Messages In This Thread
EC147 - Drag and drop QoS mechanisms - by gustav - 01-02-2021, 11:51 AM
RE: EC147 - Drag and drop QoS mechanisms - by gustav - 01-25-2021, 04:59 PM

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