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What would be the correct Approach to Upgrade Fabric switches in DNAC

What would be the correct Approach to Upgrade Fabric switches in DNAC ..? 

Like start upgrade from where 

option 1 -  Core > Distribution > Access 

Option 2 - Access > Distribution > Core 

we have 300+ sites running Core as 9500 / 9300 and Access Switches as 9200 switches running role of FIAB and eWLC ( Fabric Wireless ) .

I had a bad experience in upgrading Core 1st i lost connectivity to all my access switches on site.

We are planning to Upgrade to 17.09.04a from 17.6.5

Suggestions Appreciated !  

@DNAC @switches_upgrade_sequence 

 

 

4 Replies 4

Ruben Cocheno
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@Pankaj.bandewar1 

I always go with access first and leave running for some time, before moving to Dis and Core finally.

Tag me to follow up.
Please mark it as Helpful and/or Solution Accepted if that is the case. Thanks for making Engineering easy again.
Connect with me for more on Linkedin https://www.linkedin.com/in/rubencocheno/

balaji.bandi
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we have 300+ sites running Core as 9500 / 9300 and Access Switches as 9200 switches running role of FIAB and eWLC ( Fabric Wireless ) .

in this case i upgrade Access switches - looking at WLC compatable matrix with AP.

Monitor the network stablility - gradually increase the number of upgrades.

Same Distribution one side Monitor

Finally Core upgrade and monitor

In case required DNAC to upgrade to latest version 2.3.5 is good option.

BB

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thanks for the suggestion

is there any Cisco recommendation available , any link , as our Management people love only official documentation 

I do not believe you find any document around cisco site what device to upgrade first - its all approach and tested methods and learning lessons from past mistake in different upgrade methods.

i can only guide you how to upgrade some videos using DNAC :

https://www.youtube.com/watch?v=kjkCByvIXVI

 

https://www.youtube.com/watch?v=oDrCIAR8Scg

BB

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