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Layer 2 Qos Cisco NBAR

Posted on 2010-08-17
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Last Modified: 2012-05-10
My organisation will soon be implementing video and voice over IP.
I have done some research on QOS and seem to have the layer aspect of it sorted out with CBWFQ and a priority LLQ queue.

My question is, The core of the network is made up off Cisco 3750 switches. Each subnet has a layer 3 SVI interface on the switch.

Can I apply the CBWFQ LLQ type configuration on the SVI's and If I did that would I need to worry about any layer 2 QOS configuration?

Also, any hints and suggestions if using layer 3 qos on the svi's is going about this the wrong way.

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Question by:question01
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by:question01
ID: 33461307
Also, do 3750 layer 3 switches have the NBAR feature?
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Jody Lemoine earned 2000 total points
ID: 33496196
Unfortunately there's no dice on the NBAR as the only Catalyst switches on record with NBAR are the Catalyst 6000 and 6500 series.

The Catalyst 3750-METRO and 3750X series have CBWFQ configuration capability, but not the Catalyst 3750G or Catalyst 3750E series.

As long as your criteria aren't too complicated, you can use the older-style priority queuing mechanism on the SVIs.
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