A methodical checklist for network outages
Start with power, cabling and link state. Confirm the client IP, subnet, gateway and DNS settings, then test the gateway before testing a public IP and hostname. Compare an affected device with a working one. On MikroTik, inspect interface status, DHCP leases, ARP entries, route selection and relevant firewall counters. Record timestamps and test results so you can isolate whether the fault is local, routing-related or upstream.
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