[c-nsp] The mechanics of SSO

Ibrahim Abo Zaid ibrahim.abozaid at gmail.com
Wed May 6 19:03:44 EDT 2009

Hi Ross

actually i can't get if SUP running SSO why you think configuration will be
loaded from active to standby during switchover ? !

SSO maintains control plane and data plane resiliency and both SUP have
active IOS image and synchronized configuration

best regards

On Wed, May 6, 2009 at 11:50 PM, Ross Vandegrift <ross at kallisti.us> wrote:

> On Wed, May 06, 2009 at 04:39:40PM -0400, Jared Mauch wrote:
> > I would recommend trying to get the devices on SXF16 or SXI1 if
> > possible.  You may need to send a break and interrupt the boot process
> > on one (hope you have good OOB and know how to do this).
> What do you mean "you may need to send a break and interrupt the boot
> process on one"?  I mean, I know how to do that, and know why I might
> under a variety of conditions, but what circumstances are you
> referring to?
> We've been stuck on SXF becasue of the CSM, but after hitting this
> bug, we'll be spinning up our CSMs in a spare chassis just so we can
> avoid the bug that started the whole damn thing.
> > This is also reinforces the reason some people do not run dual
> > processor systems.  They sometimes fail in really bad ways.
> Indeed, though honestly, it was no worse than the reboot time we'd see
> from a single SUP.  And it has saved me before.
> I can imagine that others may have seen much worse from dual SUPs :)
> --
> Ross Vandegrift
> ross at kallisti.us
> "If the fight gets hot, the songs get hotter.  If the going gets tough,
> the songs get tougher."
>        --Woody Guthrie
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