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default gateway
This term is a technical specification used primarily in computer networking and IT administration. It describes the specific exit point a device uses to send traffic outside its own local subnet. If a packet's destination is not within the local network, the device automatically forwards it to this designated node.
In a home environment, the default gateway is almost always the wireless router. In enterprise environments, it may be a sophisticated layer 3 switch or a dedicated firewall. Misconfiguring this setting typically results in a total loss of external connectivity, even if the local network remains functional.
Meanings
Examples
Please check if the default gateway is configured correctly in your network settings.
I cannot ping the default gateway, so the router might be down.
The default gateway acts as the exit point for all traffic leaving the local subnet.
Wait, did you enter the wrong IP address for the default gateway?
The system will automatically assign a default gateway via DHCP.
If the default gateway is unreachable, you will lose internet connectivity.
I wonder if a misconfigured default gateway is causing this routing loop.
Ensure that the default gateway is on the same subnet as the host machine.