[c-nsp] OIR on 7600s: Pretty much evil?

[chip]

What's the time length on the bus stall?  Working on re working lots of
timers, hadn't thought of this.  Something to add to the tests.

--chip

On Thu, Nov 11, 2010 at 9:55 AM, Geoffrey Pendery <geoff at pendery.net> wrote:

> I'll second Gert - I've personally performed close to 100 OIRs on a
> variety of 6500 chassis, and never had it cause a problem.
>
> There was a previous thread almost exactly like this, BTW - if you
> feel like searching the archive.  It was half-filled with "OIR always
> fails, I call it Online Insert and Reboot!" and half-filled with "I've
> never had a problem, ever.  Works like a charm."  A couple people
> explained the bus stall behavior:
> As you're sliding the blade in, it stalls the bus when it first makes
> contact, then releases the stall once it's all the way in.
>
> My take-away from that thread was that it's a self-fulfilling
> prophecy:  The techs who approach it confidently, expecting no
> problems, slide the blade in quickly and experience none.  The techs
> who are worried and skeptical, slide the blade in slowly and
> cautiously - and their caution leads to a reboot.
>
> That said, the others in this thread are also correct - if your RP is
> doing stuff on tight timers, especially BFD, even a very short bus
> stall can still be service impacting.  And of course, it's better to
> plan a maintenance window expecting problems and be pleasantly
> surprised than to assume it's no big deal and get hit with an outage.
>
>
> -Geoff
>
>
> On Thu, Nov 11, 2010 at 2:00 AM, Gert Doering <gert at greenie.muc.de> wrote:
> > Hi,
> >
> > On Wed, Nov 10, 2010 at 03:01:21PM -0700, John Neiberger wrote:
> >> I'm just curious to hear your thoughts on OIR on this platform. Is
> >> this something that you prefer to avoid? Do you have any OIR-related
> >> horror stories you'd like to share?
> >
> > On 6500/7600 (and 7200), we *never* had any issues.
> >
> > On 7500, the "R" in "OIR" translates to "Reboot".
> >
> > gert
> > --
> > USENET is *not* the non-clickable part of WWW!
> >                                                           //
> www.muc.de/~gert/
> > Gert Doering - Munich, Germany
> gert at greenie.muc.de
> > fax: +49-89-35655025
> gert at net.informatik.tu-muenchen.de
> >
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-- 
Just my $.02, your mileage may vary,  batteries not included, etc....