[c-nsp] Sup720 crashing at RP boot - HW revision dependent ?

[Marcus.Gerdon]

Hello,

I got another pair of Sup720, Rev 5.2 and 5.7 and we've done a bunch of additional tests yesterday and there're some new results on this.

As before the 5.2 crashes in the 6509, but the 5.7 boots fine. This 5.2 gave me 'EOBC Jam's in addtion.

So at least there seems to be no >=5.2 or somewhat general issue.

Our supplier did some additional tests based on the revisions and came out with Sup720 Rev 5.2 booting fine in a 6509 Rev 2.0.

Although now all 3 Rev 5.2 engines aren't booting in my 6509 whilst 4.4 and 5.7 are working fine I begin to think whether my chassis might simply be defect. It's been productive for years and up to now everything worked smoothly as expected except those 3 Sup720's. But the only other cause in case the chassis is ok I can think of would mean a revision-based issue Sup 5.2/chassis 2.0 only occuring randomly (3 out of 3 is still random?) or with a subset of Sup's manufactured in Rev 5.2. This sounds too unlikely to me.

It can't be this one http://www.cisco.com/en/US/ts/fn/620/fn62606.html, but the note especially on Rev 5.2 makes me somewhat suspicious.




regards,

Marcus
 

> -----Ursprüngliche Nachricht-----
> Von: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] Im Auftrag von 
> Marcus.Gerdon
> Gesendet: Mittwoch, 11. März 2009 11:46
> An: cisco-nsp at puck.nether.net
> Betreff: [c-nsp] Sup720 crashing at RP boot - HW revision dependent ?
> 
> Hi @all,
> 
> yesterday I've been hit by a somewhat strange - and possibly 
> worrying -
> effect with Sup720 in 6500.
> 
> I've got 3 Sup720-3BXL, one with an older HW revision (Sup: 4.4 / PFC:
> 1.6 / MSFC: 2.5) and 2 with newer (Sup: 5.2 / PFC: 1.8 / 
> MSFC: 2.5). All
> three have been tested in a 6509 successfully by the 
> supplier. According
> the test sheets they've used a Rev. 3.0 chassis.
> 
> For offline testing and preparation I've an 6509 and 6506 
> spare chassis
> at hands, both of them being Rev. 2.0.
> 
> When trying to boot those Sup in my 6509 the older one boots fine and
> everything is ok. The newer ones both start to boot and after 
> switching
> to boot the RP it stalls (download doesn't even start, hangs after
> memory is displayed). After a minute or two a 'software forced crash'
> occurs and I'm thrown do SP rommon.
> 
> Up to this point no updates, config changes or anything other than
> plugging them in the chassis and turning the power on has been done.
> 
> It doesn't matter if they're put in slot 5 or 6, if the working one is
> already active in slot 5 or if I'm manually booting from 
> rommon instead
> of autoboot. Also the IOS used doesn't change anything (18SXF, 18SXI,
> 17SXd)
> 
> Interestingly in the Rev. 2.0 6506 all three are booting 
> fine. I've done
> both rom updates in the 6506 and tried again in the 6509 - without any
> change.
> 
> To me this looks like there's some dependancy between HW revisions of
> the Sup or PFC (MSFC rev. is the same on all threee) and the 6509
> chassis (6506 wasn't effected). 
> 
> I've searched cisco.com for quite some time but without any 
> hint to this
> issue. The only thing I found was that there're a few 6509-NEB eeprom
> updates to be applied to the chassis itself. So in fact there is some
> active rom part with the chassis that supposedly will differ between
> revisions.
> 
> 
> Does someone stumbled upon this, had similar issues or maybe even know
> or did see any document (comp. matrix, workaround or alike) 
> about this ?
> 
> 
> 
> regards,
> 
> Marcus
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>