Hello, Are you referring to the following messages as flaps? OSPF adjacency with neighbor has gone down. interface tunnel.XX, neighbor router ID 1.2.3.4, neighbor IP address 1.2.3.5 OSPF doesnt flap on its own. In my experience on single links such as yours, the reason is an actual link issue and not OSPF if your settings are default. To mititgate this we have two ways to get back to our data centers, P2P wan links, primary, and VPN tunnels over the internet to the datacenters. So each or our sites has 2 conections to its 'closest' data center and 1 to the remote one for additional redundancy. I have a 100M fiber link that is just for internet access at one of my sites, but it also does this, for a few seconds randomly it blips and used to down the site. Regards,
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