I will be moving Cisco Wireless Lan Controllers 8540 (v.8.10.121.0) from Cisco 6509s to Nexus 9504s this summer. I want to be proactive and ask engineers if anyone encountered any issues with these two devices and if you did, how you resolved them. I encountered an issue with Firepower and N9Ks 1gig connectivity, which took a very long time to resolve, so I want to prevent the same from happening again since we have a very short maintenance window and lots of sensitivity around any downtime.
thank you in advance
Birtnichie
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