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Whats so difficult about ISSU

Subject: Whats so difficult about ISSU
From: karim.adel at gmail.com (Kasper Adel)
Date: Fri, 9 Nov 2012 01:22:58 +0200

Hello,

We've been hearing about ISSU for so many years and i didnt hear that any
vendor was able to achieve it yet.

What is the technical reason behind that?

If i understand correctly, the way it will be done would be simply to have
extra ASICs/HW to be able to build dual circuits accessing the same memory,
and gracefully switch from one to another. Is that right?

Thanks,
Kim

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