Troubleshooting Slow Network Throughput with iPerf3
We broke a healthy lab path three ways on real Cisco routers. Learn the three fingerprints of slow throughput and the iPerf3 tests that expose each.
4 min read
Learn networking by building it
Hands-on CCNA labs and CCNP-level deep dives, all on real Cisco IOS XE with downloadable CML topologies. Zero fabricated output. Subscribe for new labs plus the free BGP, OSPF, and ASA field references.
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View allRunning an iPerf3 Server: Daemon Mode, Ports, and Logging
Foreground vs daemon mode, the one-test-at-a-time busy error, multi-port servers, systemd units, and the firewall rules an iPerf3 test server actually needs.
4 min read
iPerf2 vs iPerf3: Differences That Actually Matter
Two tools, not two versions: they do not interoperate, flags collide, and each wins different jobs. Real output from iperf 2.2.1 and 3.18 shows exactly where they differ.
4 min read
