3850 IOS software versions

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01-03-2020 01:56 PM - edited 01-03-2020 02:05 PM
What is the differene between the 3.7E.x and 16.x.x software versions? The switches that I'm about to add to a stack are at 03.07.04E (mixed stack.WS-C3850-48T-S and WS-C3850-24XS-S). I wonder if it's best to upgrade and to what version.
And are there no tar IOS versions available for download?
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01-03-2020 03:23 PM
The 16.x train was all about adding programmability and support for DNAC.
I'm still running all of the 3850's I look after on the 3.x train.
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01-03-2020 03:25 PM
ps. If you do uprade to 16.x watch your ROMMON versions.
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01-03-2020 03:26 PM
2. Before adding the new switch member to the stack, downgrade it first to 3.7.4 and see if it boots. If it does, then it is up to you if you want it to join the stack (or not).

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01-07-2020 07:45 AM - edited 01-07-2020 07:48 AM
CAT3850/3650 UNIVERSAL
cat3k_caa-universalk9.SPA.03.07.04.E.152-3.E4.bin
25-May-2016
312.96 MB
CAT3850/3650 UNIVERSAL W/O DTLS
cat3k_caa-universalk9ldpe.SPA.03.07.04.E.152-3.E4.bin
25-May-2016
312.95 MB

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01-07-2020 08:10 AM
I see the second version has ldpe added to the name. However I'm still not sure what the difference is.
