1. Power-cycle your router
The first thing you need to do is power cycle your router. Power cycling the router means disconnecting it from the electrical source. This often helps when the device gets overheated or overloaded with cache. Power cycling the router could fix the ‘Destination Host Unreachable’ error, especially if there is a problem with the gateway. To do so, follow these steps:
2. Check Your Internet Connection
After power cycling the router, we recommend that you check your internet connection. To do this, open any browser and visit google.com. If you can access google.com, it means the problem lies in your local configuration settings. However, if you cannot access google.com, then the problem originates from the backend. In this case, you should contact your ISP (Internet Service Provider) to resolve the issue.
3. Test IPv6 and IPv4
To diagnose the problem in the local configurations, it is always advisable to start with Internet Protocol (IP) versions. Internet Protocol (IP) enables users to connect over the internet using IP addresses. Internet Protocol completes the task of delivering packets from the host to the destination. Therefore, it is necessary to test IPv6 or IPv4. There is not a major difference between IPv6 and IPv4. IPv6 can hold up to 128 bits addresses, allowing 3.4 x 1038 unique IP addresses.
4. Add the Default Gateway Address to the Destination
Adding a correct gateway to the destination host can also fix this problem. Destination host unreachable could occur when the destination host is not receiving the response from the router gateway. Therefore try adding a correct gateway manually to the destination host. To do so, follow the steps:
4. Use the third-party utility to check the routing table
If you are attempting to ping from one virtual computer to another within the network, it is possible that you are not using the correct routing table for your server. To resolve this issue, ensure that all local computers are properly connected to the router. You can accomplish this by using an appropriate utility to check the IP routing table, such as Cisco Packet Tracer. If you are still facing the ‘destination host unreachable’ error, we recommend contacting your ISP (Internet Service Provider) to properly configure the local configurations and routing table.
