[j-nsp] qfx5100 software upgrades and virtual-chassis

[Nitzan Tzelniker]

If you cant afford taking down the whole VC do not work with VC
This is my philosophy with VC
Do MC-LAG or EVPN in these environment (even with VC just to increase the
number of ports )

Regarding the host they dont have to be the same unless there is a known
issue

From
https://www.juniper.net/documentation/en_US/junos/topics/task/installation/qfx-series-software-upgrading.html


However, pay attention to these notes regarding Junos OS and Host OS
versions:

   -

   The Junos OS and Host OS versions do not need to be the same.
   -

   During an ISSU, the Host OS cannot be upgraded.
   -

   Upgrading the Host OS is not required for every software upgrade, as
   noted above.


Nitzan

On Thu, Sep 6, 2018 at 8:10 PM Louis Kowolowski <louisk at cryptomonkeys.org>
wrote:

> It seems reasonable, and no worse than the situation now, with mis-matched
> versions. I don't see why the host software would have anything to do with
> VC, seems like it should just be handling VM operations, and doing
> hardware-passthrough...
>
>
> > On Sep 6, 2018, at 12:01 PM, Chuck Anderson <cra at WPI.EDU> wrote:
> >
> > Logically, why couldn't you isolate one member at a time, do the
> upgrade, then rejoin it to the VC?
> >
> > On Thu, Sep 06, 2018 at 11:12:59AM -0500, Louis Kowolowski wrote:
> >> I currently have a 6 node VC of qfx5100. All are running 14.1X53-D43.7
> and host software 13.2X51-D38. In discussions with JTAC, they claim that
> upgrading the host software to match the VM, it requires a reboot of *all*
> nodes in the VC at the same time.
> >>
> >> Has anybody else had to deal with this? Are there any work-arounds?
> Taking the whole thing down is extremely awkward. Can we do a rolling
> upgrade (manually, I know ISSU/NSSU doesn't handle this) and stay
> operational? We are working on a plan to re-architect this into 2x 3 node
> VC and MC-LAG them together, but it would be nice to be able to fix this
> more short-term.
>
> --
> Louis Kowolowski                                louisk at cryptomonkeys.org
> Cryptomonkeys:
> http://www.cryptomonkeys.com/
>
> Making life more interesting for people since 1977
>
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