North American Network Operators Group

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RE: Route table growth and hardware to the filter

  • From: Jon Lewis
  • Date: Fri Sep 21 08:08:43 2007

On Fri, 21 Sep 2007, Lincoln Dale wrote:

No, but someone previously posted that with later software versions, when
TCAM runs out, packets for those routes that fit in TCAM are hardware
switched, and only traffic for the remaining routes that didn't fit are
software switched.

that would have been me. and the comments on the logic still stand (as correct) provided you are running the appropriately non-ancient release of code.

Do you know in what version this behavior was changed? At the very least, people are going to want to upgrade IOS, as it'll likely mean the difference between slightly increased MSFC CPU and a switch that can't cope.

 Jon Lewis                   |  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
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