| QoS is a big topic on your BCMSN and CCNP
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| | be configured on the appropriate
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| exams, and for good reason. As more and
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| | distribution layer switches.Any traffic
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| more traffic flows through today's
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| | received by core switches should already
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| networks, accurately applying QoS to both
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| | be classified and marked as needed. The
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| your routers and switches becomes more
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| | key with core switches is to use a simple
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| important.Note the phrase "accurately
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| | queuing setup to keep the switching
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| applying". You must have a plan in place
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| | process fast. Fast, fast,
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| before you start configuring QoS on your
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| | fast!Real-world note - Low Latency
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| switches, and to create such a plan you
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| | Queuing (LLQ) is an excellent choice for
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| should use Cisco's Three-layer
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| | core switches. The name says it all -
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| Hierarchical Model.This model breaks
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| | low latency! The configuration of LLQ is
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| switches down into three main groups -
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| | not a BCMSN topic, but a quick search on
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| Access, Distribution, and Core. You're
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| | the term low latency queuing will quickly
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| familiar with these groups from your CCNA
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| | bring up several Cisco LLQ configuration
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| studies, and now you've got to apply this
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| | documents.Knowing the three layers of
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| knowledge.The QoS workload should be
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| | Cisco's networking model and the basic
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| borne by the Access and Distribution
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| | QoS operation and commands is vital to
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| layers, because the Core layer switches
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| | passing the CCNP exams, but even more
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| need to be left alone as much as possible
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| | importantly, you've got to apply this
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| to their primary purpose -
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| | knowledge carefully and accurately to
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| switching!Traffic should generally be
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| | make QoS work for you in today's
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| classified and marked at the Access
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| | production networks.Chris Bryant, CCIE
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| layer. This allows traffic to be
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| | #12933, is the owner of The Bryant
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| assigned the desired QoS values and carry
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| | Advantage, home of free CCNP and CCNA
|
| that value throughout the network.If you
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| | tutorials, The Ultimate CCNA Study
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| choose to change CoS-DSCP mappings, this
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| | Package, and Ultimate CCNP Study
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| will generally be done at the
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| | Packages.You can also join his RSS feed
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| Distribution layer. Since distribution
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| | and visit his blog, which is updated
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| layer switches will be receiving frames
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| | several times daily with new Cisco
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| and packets with QoS values from the
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| | certification articles, free tutorials,
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| access layer switches, the appropriate
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| | and daily CCNA / CCNP exam questions!
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| "trust" and "no trust" statements should
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| | Details are on the website.
|