[c-nsp] Nexus 7k Upgrade Path

[quinn snyder]

N7K ISSU “a long time ago” has evolved drastically. 
I vaguely remember that 5.0, 5.1, and 5.2 code each had a scheduler re-write because things would get bungled up under load. I’m sure some of the TMEs on this list can comment. 

I myself had a few issues moving from 5.1 to 5.2 — causing several outages from process interrupts allowing heartbeats to fail (loopguard, UDLD, etc). 

Since moving all of my customers to 6.2+ — I’ve not seen ISSU oddities. YMMV, of course. 

q. 

--
quinn snyder | snyderq at gmail.com

-= sent via iphone. please excuse spelling, grammar, and brevity =-

> On May 28, 2018, at 12:50, Ahmed Elnagar <ahmed_elnagar at hotmail.com> wrote:
> 
> Actually ISSU is not that stable, I tried it a couple of times "long time ago" with no luck so I stopped using it at all.
> 
> Best Regards,
> Ahmed Elnagar | CCIE#24697, CCNP R&S/DC
> 
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Bradley Ordner
> Sent: Friday, February 23, 2018 2:41 AM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Nexus 7k Upgrade Path
> 
> Hi,
> 
> 
> Only been on the list for a few months but found it very informative. I had a question regarding the Nexus 7K ISSU upgrades.
> 
> 
> We have a Nexus 7K with two SUP2Es. We need to get to software version 8.1(2). It says that you can't double hop to a software version without an outage. Although I have found the following -
> 
> 
> ISSU from 7.2(0)D1(1) to 7.3(1)D1(1) then to 8.1(2).
> 
> 
> 
> We currently are on 7.2(0)D1(1) according to the doco I should be able to upgrade as each version can ISSU to the next?
> 
> 
> 
> Has anyone performed this before?
> 
> 
> I have posted this on Cisco Support Community, with no response so either it is a stupid question or no one has done it before.
> 
> 
> Thanks
> 
> 
> Brad Ordner
> 
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