Thanks for clarifying. The routed L3 core does seem like the better option for four sites, particularly for redundancy and future expansion.

Have you checked whether the DNS settings are applied to all devices and whether the router is using OpenDNS? YouTube may also need separate restrictions, so checking those settings could help narrow down the issue.

For four sites, I’d lean toward a routed L3 core since it gives you more flexibility as the network grows. Direct BGW connections may work in some designs, but I’d verify Cisco’s support guidance for your exact NX-OS version first. Has anyone deploye...

I’d check the controller logs first to narrow down the DTLS and heartbeat errors before trying a factory reset.

Congratulations to everyone who received the Spotlight Award! It’s great to see people being recognized for sharing their knowledge and helping others in the community.