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 | [email protected] -= sent via iphone. please excuse spelling, grammar, and brevity =- > On May 28, 2018, at 12:50, Ahmed Elnagar <[email protected]> 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:[email protected]] On Behalf Of > Bradley Ordner > Sent: Friday, February 23, 2018 2:41 AM > To: [email protected] > 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 > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
