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Network Engineering

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  • Can a switch be configured to loopback the data? If so then I would just buy a switch. Commented Jul 19, 2022 at 14:07
  • Some switches can be coaxed into doing that, using a network loop and abusing (unidirectional) port mirroring or source-port filtering to avoid the bridge loop. That's not a supported mode though and you'd need to test it yourself. Commented Jul 19, 2022 at 14:14
  • If you don't mind the looped back frames to carry some VLAN tag, you could translate the VLAN on the loop and tag the translated VLAN on the test port (works with most switches, not all). Commented Jul 19, 2022 at 14:26