Re: Whats so difficult about ISSU

[Kenneth McRae <kenneth.mcrae () dreamhost com>]

Juniper also offers it on the EX virtual switching platform.  Works if you
have the correct version of JunOS.

On Thu, Nov 8, 2012 at 3:38 PM, Zaid Ali <zaid () zaidali com> wrote:

> Cisco Nexus platform does it pretty well so they have achieved it.
>
> Zaid
>
> On Nov 8, 2012, at 3:22 PM, Kasper Adel wrote:
>
> > 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