mac-address-table aging-time best practices

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Dec 15th, 2008
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Question regarding mac aging time.


On a core switch such as a 6500 is there a best practice and benefit to configuring the mac aging time other than the default of 300 seconds? I have heard it is best to up this to say 84600 of there abouts.


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Jon Marshall Mon, 12/15/2008 - 09:01
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Brandon


One of the things that springs to mind with setting mac-aging is to avoid unicast flooding. Have at look at this following document and specifically at the "Asymmetric Routing" section -


http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00801d0808.shtml#cause1


Jon

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