I am using CCR1036 for internet. Whenever i change which port i plug the router into the switch i lose internet connectivity until i reboot switch. Updating firmware doesnt help. If i swap the ports of gateways and devices of various networks in the switch it doesnt learn any of the new routes and so layer 3 connectivity is lost (cant ping other device/router even with valid IP settings).
I am not using any switch configs on the CRS other than trunk but whether or not port is trunked doesnt seem to change this.
Sometimes a loop can form within the switch without a physical loop causing loss of network but the switch management itself can be accessed.