Junos
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Junos

QFX 5100: Upgrade from recommended 14.1 to "newly" recommended 18.1-R3

‎09-26-2019 08:21 AM

Hi guys,

 

I have some network weirdness on our QFX5100 VC (4xQFX5100-48S) and i took a look at the JTAC recos, look like the version has been bumper from 14.1X to 18.1 "recently".

 

I was wondering if the upgrade is doable directly or if we need to got thru a bunch of intermediates releases like 14.1->17.1->17.4->18.1 ?

 

4 REPLIES 4
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Junos

Re: QFX 5100: Upgrade from recommended 14.1 to "newly" recommended 18.1-R3

‎09-26-2019 11:24 AM

According to https://kb.juniper.net/InfoCenter/index?page=content&id=KB34165 you should upgrade from 14.1 to 17.1, and then you should be able to go directly from 17.1 to 18.1.

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Junos

Re: QFX 5100: Upgrade from recommended 14.1 to "newly" recommended 18.1-R3

‎09-27-2019 12:48 AM

Interesting, any reason to do 14.1 > 17.1 > 18.1 versus 14.1 > 16.1 > 18.1 ?

Junos

Re: QFX 5100: Upgrade from recommended 14.1 to "newly" recommended 18.1-R3

‎09-27-2019 03:25 AM

Hi bplessis,

 

What exact 14.1X53-Dxx release are you running, and what "weirdness" have you been seeing ? 

 

I've tested QFX5100 and EX4300 upgrading from 14.1X53-D30 to 18.1R3-S6 in one step and seems fine, but you may want to test in your own configuration first if you have access to a spare switch. I haven't tested the QFX5100 upgrade as part of a VC, so of course YMMV.

 

And particularly beware of the 18.1R3 release across certain other platforms (EX2300/EX3400)... there's a few confidential PR's along the way there that in all honesty I think JTAC have jumped the gun here in setting 18.1R3-S6 as the recommended release so broadly across so many platforms. 

 

If you follow juniper-nsp mailing list you'll see on there a general suggestion that 14.1X53 is indeed rock solid for QFX5100 VC, and if you aren't doing EVPN/VXLAN then you're probably OK to stay on 14.1X53 unless you're having serious issues. 

 

14.1X53-D51 just released a day ago, however Juniper haven't published any release notes for it on TechLibrary yet (why??) so it's hard to confirm what PR's are resolved in it, and JTAC were somewhat unhelpful with me as well today in tracking down any notes for it.

 

Cheers,

Chris

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Junos

Re: QFX 5100: Upgrade from recommended 14.1 to "newly" recommended 18.1-R3

‎09-28-2019 04:32 AM

Hi ChrisLee,

 

We are running 14.1X53-D40.8 and sadly i don't have a spare unit/VC to test :/

 

I have some paquets loss / network congestion (internal monitoring show paquet loss when testing internal VMs) somehow on a 40G backed VC with 2x10G connected hypervisors and storage, generating only 100Mbps of service trafic so i'm a little concerned and wondering if it's the third party 40G gbic

 

Thanks for your input, look like i'll stay on 14.1X for a while and try to narrow what the hell is happening