Packet loss causes slow page loads, flaky connections and choppy video. Diagnosing it starts with locating which segment is at fault.

1. Locate with mtr first

Run mtr server-ip from local to server, then from server to local (both directions). See where loss begins:

  • Loss at the first hop: local network or router;
  • Loss mid-path but not at the end: usually a router rate-limiting ICMP, minor impact;
  • Persistent loss at the end: server side or data-center line.

2. Common causes and fixes

  • Bandwidth saturated: upgrade bandwidth or cap per-connection rate;
  • Line congestion: peak-hour detours — consider an optimized line;
  • High server load: maxed CPU/RAM can look like loss — check processes;
  • Under attack: abnormal traffic causing loss — see the DDoS guide.

3. When to contact the provider

If it's confirmed a line issue from the data center to your region, send mtr screenshots to 00Shark support and we'll help investigate.