RE: sup720 memory parity error (OT as flares and SUP720 are not

Tomorrow night (Thursday) should be much stronger.

http://www.flickr.com/photos/yahooeditorspicks/galleries/72157624653325820/

http://www.nasa.gov/topics/solarsystem/sunearthsystem/main/News080210-cme.htm
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> From: niedentj_at_hotmail.com
> To: mcnever_at_gmail.com; tron_at_huapi.ba.ar; mcnever_at_gmail.com
> CC: ccielab_at_groupstudy.com
> Date: Thu, 5 Aug 2010 02:37:22 +0000
> Subject: RE: sup720 memory parity error
>
> There should be a large solar flare event soon actually. May want to read
> IBM's single bit parity error white paper. In newer systems including
cisco's
> HFRs they have single bit error correcting memory controllers. Gsr 120xx
> backplanes used to be painfully susceptible to errors as well back in the
> day.
>
>
> -----Original Message-----
> From: Jason Morris
> Sent: 8/4/2010 10:49:48 PM
> To: Carlos G Mendioroz
> Cc: Cisco certification
> Subject: Re: sup720 memory parity error
> yep, if it had 2 sups it wouldn't be as susceptible to cosmic radiation!!
>
> http://www.cisco.com/en/US/ts/fn/200/fn25994.html
>
> that answered my question perfectly, thanks Carlos.
>
>
>
> On Wed, Aug 4, 2010 at 2:17 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar>
wrote:
>
> > Sups are loosely coupled, i.e., they do not share memory.
> > Parity error on one will crash it, and force a switchover if it was the
> > active one. Parity errors on both... will trigger an EMI monitoring of
> > the place where you have the switch ? (or a reference check of the
> > provider of it ? :)
> >
> > On a reread of your message, sounds like you don't have redundant sups,
> > so answer is yes, they should.
> >
> > -Carlos
> >
> > Jason Morris @ 4/08/2010 17:55 -0300 dixit:
> > > Hey guys,
> > > would having duel sups in a 6500 keep it from reloading when one sup
got
> > a
> > > memory parity error, or would it crash both supervisors?
> > >
> > > Thanks
> > > Jason
> > >
> > >
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> > >
> >
> > --
> > Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>
>
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Received on Thu Aug 05 2010 - 03:15:36 ART