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On Fri, 18 Sep 2020, chiel wrote:
I have been hearing different scenario of what would happen when the TCAM is
full:
1. The whole thing goes into software routing mode for all routes which
causes 100% CPU and resulting and unusable box
2. New route entries will just get dropped, current entries just stay in TCAM
3. New route entries will be software routed, but entries that are already in
TCAM will be hardware routed. You won't notice much impact in the beginning.
What is true?
In my experience (which is almost a decade old though) the device goes
into a semi-unstable state where some traffic is dropped/unusable, and can
only be fully recovered by reboot.
My advice is "don't let that happen".
--
Mikael Abrahamsson email: [email protected]
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