Cisco's method for rolling out updates (basically stuck in the 90s) is becoming 
more and more of a liability. When evaluating vendors I have started to place 
high importance in how they handle updates as there is less and less tolerance 
for leaving anything in a unpatched state for very long. Patch management 
software should be part of the product, it shouldn't be something I need to pay 
extra to do in an efficient manner, nor should it be expected you'd build out 
some scripting solution that accounts for all the annoying oddities a vendors 
platform should have. Cisco and other vendors need to really do better to 
ensure that their customers can easily patch so their boxes are not viewed as 
security liabilities.


-----Original Message-----
From: cisco-nsp <cisco-nsp-boun...@puck.nether.net> On Behalf Of Mark Tinka via 
cisco-nsp
Sent: Sunday, February 26, 2023 7:55 AM
To: cisco-nsp@puck.nether.net
Subject: Re: [c-nsp] NCS IOS-XR rant (was:Re: Internet border router 
recommendations and experiences)

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On 2/26/23 16:44, Tarko Tikan via cisco-nsp wrote:

> Well, not so in practice.
>
> You can't issue install from http:// or any other remote URL.
>
> You have to sit around and issue "install apply" after "install
> replace" is finished. Replace is async so you have to sit around and
> poll the process.
>
> After reboot you have to reconnect to device and issue "install commit".
>
> In some cases direct upgrades from version X to Y fail so you have to
> go through this whole process twice (X to Z to Y) that takes around 2
> hours on NCS540.
>
> In some other X to Y cases there is not sufficient diskspace to
> complete "install replace".
>
> We personally have automated the whole install process via netconf and
> can workaround the quirks relevant for our platforms and versions.
> Many people can't do that or can't justify the expense (when they have
> small number of devices).
>
> Some other issues have been solved by Cisco in latest releases, I
> belive install replace can now be sync operation, maybe not on NCS540
> but on larger platforms (IOS-XR consistency between platforms is an
> issue itself).
>
> So I totally get what Mark and Gert are saying. IOS-XR is currently
> worst NOS operational experience from all large NOSes out there.

Oh gosh - it's such a shame that it's 2023 and we still have to put up with 
shoddy software maintenance processes, just because a vendor insists that their 
next generation OS core is worth the daily-use pain.

I could be okay with doing for this for about 10 - 20 nodes in the core.
But even with some level of automation (because you have to baby-sit the 
automation, especially when the vendor changes things in a bid to "improve" 
life with their OS), trying to manage this on 100's - 1,000's of nodes in the 
Metro (or anywhere, really) is just too much of a nightmare.

So you either end up with network gear running very old code because operators 
can't be asked to spend 2hrs on upgrading a single device, or simply tying up 
too many engineer hours at the expense of other projects.

Mark.
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