In this day and age, rebooting fixes most problems. Anytime you call into a support center for troubleshooting a device 9/10 times they ask you to reboot the device first. When you build a multi-vendor network just as you have in your situation, they don’t always play nice together and rebooting them sometimes gets them to sync up and cooperate. I’m sure there is a specific technical reason why your setup wasn’t working temporarily.