21 Testing Connectivity with Ping

Using ping to Test Network Connectivity
- ping <IP> sends test packets to check if a device is reachable.
- Works for both internal and external network testing.
- Continuous pinging in Linux can be stopped using Ctrl + C.
Verifying Local Network Connections
- ping <local_IP> confirms if devices on the same network are reachable.
- Successful responses mean the network is properly configured.
- High latency or dropped packets indicate network issues.
Detecting Network Separation Issues
- ping fails if two devices are on different networks without routing.
- The error Network is unreachable means the destination is not accessible.
- If the network is reachable but the device is not, the error is Host unreachable.
Using Ping for Troubleshooting
- Helps identify whether an issue is device-specific or network-wide.
- Can be used to test router and gateway connectivity.
- Understanding ping failures helps diagnose firewall, routing, or misconfiguration issues.