I was trying to bring up a network at a site where their ISP is an AT&T. They had a fiber router, ADIR0 with speeds of 20 mbps. When moving the connection from a cradlepoint to the Cisco Meraki MX-75 the LED light would go red. Meraki dashboard showed the device as offline and dhcp didn't seem to work. I consoled into the MX-75 and created a static route and the uplink came up for 30 minutes and went back down. I'm wondering if this is an arp problem or if I should try rebooting the AT&T managed router.
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