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Ex4300 Upgrade Path

‎06-02-2020 08:24 AM

Hi,

 

Currently planning an upgrade of a VC 2x EX4300 running 14.1X53-D47 to 18.1R3-S9 but im struggling to identify the path for the upgrade.

 

Would 14.1X53-D47 -> 16.1R7-S7 -> 18.1R3-S9  be officially supported?  what would be the recommended path?

 

Tks

 

 

8 REPLIES 8
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Junos

Betreff: Ex4300 Upgrade Path

[ Edited ]
‎06-02-2020 08:41 AM

Hi Jchibante,

 

here you can find the officially supported way:

https://www.juniper.net/documentation/en_US/junos/information-products/topic-collections/release-not...

 

Please note that this is just the official way which JTAC supports, it does not mean that a direct upgrade from 14.1X54 to 18.1R3 does not work fine. I'd suggest you to try in your lab a direct upgrade with your current config installed. If it works fine, just upgrade directly. If not, check which configuration part is not compatible with the new JUNOS release.

--------------------------------------------------

If this solves your problem, please mark this post as "Accepted Solution".
If you think that my answer was helpful, please spend some Kudos.
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Junos

Re: Ex4300 Upgrade Path

‎06-02-2020 08:42 AM

Hi Jchibante,

 

Greetings, 

 

Yes, the upgrade path that you shared should work. 

14.1X53-D47 -> 16.1R7-S7 -> 18.1R3-S9  >> This is supported

 

Also for more details you can check the other question on our forum: 

https://forums.juniper.net/t5/Junos/Solved-Upgrade-Failure/m-p/477257#M17407

 

Hope this helps. Please mark "Accept as solution" if this answers your query. 

Kudos are appreciated too! 

 

Regards, 

Sharat Ainapur

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Junos

Re: Ex4300 Upgrade Path

[ Edited ]
‎06-02-2020 08:46 AM

Hi Jchibante,

 

Since you are not skipping not more than 3 major releases the below upgrade path should work. But as suggested  it is recomended to test in lab before going for production box upgrades.

 

14.1X53-D47 -> 16.1R7-S7 -> 18.1R3-S9 

 

 

If this solves your problem, please mark this post as "Accepted Solution" so we can help others too

 

Kudos are appreciated too 

 

Regards,

Nadeem

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Re: Ex4300 Upgrade Path

‎06-02-2020 02:46 PM

You might want to go 14 > 15 > 16

 

This is because v15 introduces upgraded FreeBSD .

 

See:

https://forums.juniper.net/t5/Junos/Solved-Upgrade-Failure/td-p/477201

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Junos

Re: Ex4300 Upgrade Path

‎06-02-2020 04:48 PM

Hello Jchibante,

 

You should be able to upgrade directly, the onlything you must make sure before doing that, is that the configuration running in 14.1 is compatible with 18.1. The best way to do it, is testing the configuration in a lab unit running a newer code or open a ticket with JTAC to validate the configuration.

 

The most common errors are interfaces referenced under protocols xstp, but the interfaces are not part of family ethernet-switching. This will cause a commit error preventing the configuration to commit, so there will be an outage.

 

Another problem, is that ssh root access is disable by default in new codes so you must manually specify it if need it. (#set system services ssh root-login allow)

 

If this solves your problem, please mark this post as "Accepted Solution"

 

-Regards

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Junos

Re: Ex4300 Upgrade Path

‎06-22-2020 10:22 AM

Hello,

 

Thank you all for your replies. Unfortunately we don’t have a lab so i had to wing it.

 

14.1X53-D47 -> 16.1R7-S7 

 

Problem 1: Lost SSH to the VC because config. only loaded partially. When I tried to “commit” the config I found the problem was in the VSTP config. I had a couple interfaces configured for VSTP that were disable so they were not set as " family ethernet-switching".

[edit protocols vstp]
'interface'
xSTP:Interface ge-1/0/X is not enabled for Ethernet Switching

 

 

Problem 2: After fixing the “ ethernet-switching” a second problem showed up:

[edit protocols vstp]
xSTP:Trying to configure too many interfaces for given protocol

Since I had each interface added to the vstp configuration individually, what I did was remove each interface and add “protocols vstp interface all”.

 

 After that I was able to commit the config.

 

16.1R7-S7 -> 18.1R3-S9

 No problems.

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Junos

Re: Ex4300 Upgrade Path

‎07-01-2020 06:40 PM

Hi Jchibante,

 

Thank you for updating, Glad you were able to resolve the issue.  Kindly mark solution as accepted so that other can benefit from this post.

 

Regards

Nadeem

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Junos

Re: Ex4300 Upgrade Path

‎07-10-2020 04:48 AM

Hi All,

 

Just want to inform you all, today upgraded ex4300 switch junos from 14.1X53-D30.3 to 18.1R3-S9.1 directly without following any intermediate junos and i have not faced any issues during/after the upgrade. 

 

As you all mentioned in your post, i verified SSH, Telnet and other services too. Everything looks normal, If anyone would prefere to upgrade directlty from 14.1x to 18.1 series you can upgraded it as per my understanding. Below output fyr.

fpc0:
--------------------------------------------------------------------------
Information for snapshot on internal (/dev/da0s1a) (primary)
Creation date: Jul 10 16:46:53 2020
JUNOS version on snapshot:
jcrypto-ex: 18.1R3-S9.1
jdocs-ex: 18.1R3-S9.1
jsd : powerpc-18.1R3-S9.1-jet-1
jsdn-powerpc: 18.1R3-S9.1
junos : ex-18.1R3-S9.1
junos-ex-4300: 18.1R3-S9.1
jweb-ex: 18.1R3-S9.1
Information for snapshot on internal (/dev/da0s2a) (backup)
Creation date: Nov 13 08:48:42 2015
JUNOS version on snapshot:
jdocs-ex: 14.1X53-D30.3
junos : ex-14.1X53-D30.3
junos-ex-4300: 14.1X53-D30.3
jweb-ex: 14.1X53-D30.3

 

I have done the snapshot match to keep the same version in both Primary & Backup partition.

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