![]() ![]() To isolate and potentially remedy these issues and alerts please try the following: The router receiving the frame discards the packet because it only sees half of the connection. When the LAN device replies, it sends the reply to the other router's interface. In this instance traffic from remote network enters the LAN from one router's interface and is sent to a LAN device. This issue can also be caused when you have two different routers connected to your LAN segment to route traffic to different networks. Therefore an acknowledgement TCP ACK from the Meraki device is never sent back to the controller to establish the TCP connection. The Meraki device waiting on the TCP SYN/ACK never receives it. When the cloud responds to the Meraki device with a TCP SYN/ACK, it is dropped by the firewall. In this instance, the Meraki device's TCP SYN packet is reaching the cloud. This is generally caused by an upstream firewall not using stateful packet inspection. Please reach out to Meraki support to confirm these findings and work through any potential next steps. If a device has not checked into the dashboard after several minutes since being powered on, but it is associated with a dashboard network and there is other Meraki equipment checking into the dashboard, refer to the device's local status page for the next steps in troubleshooting.Filtering for the IP address or MAC address of the device and downloading the .pcap file is recommended for larger networks.Take a packet capture on an upstream device to see what traffic the device is sending and receiving.The device is receiving an IP address from the DHCP server or has a valid static IP properly assigned.If multiple VLANs are in use upstream, test connectivity on the same VLAN.A working internet connection will have access to the IPs, ports, and protocols defined under Help > Firewall info in the dashboard and would be able to successfully pass the connection monitoring test.Check if the device is connected to a working internet connection.Check the LED on the Ethernet port is lit or seen as a mesh neighbor.Make sure layer 1 connectivity is healthy.Confirm the device is establishing a link with the upstream device. ![]() Troubleshooting a Faulty MX Appliance or Z-Series Teleworker Gateway Troubleshooting and replacing a faulty MV Troubleshooting and replacing a faulty MR Troubleshooting and replacing a faulty MS If there is no power status light or power status light is amber please refer to device specific troubleshooting guide below.It is recommended to refer to the respective device model's installation guide to learn more about the status light. Usually, if a Meraki device is not connected to the Meraki dashboard but powered on the power LED turns solid amber or red color.Make sure the device is powered on and at least the LED showing amber color.Make sure the device is not running in dark mode.Confirm the color of the power status light on the device.AC adapter or from a device supplying PoE.Check if the device is receiving power from its power source. ![]()
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