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    Performance: ipsec tranport mode over GRE or ipsec in tunnel mode?

    Scheduled Pinned Locked Moved IPsec
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    • P
      probie
      last edited by

      Anyone know which method is better for performance/throughput?

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      • C
        cmb
        last edited by

        Not likely to be a measurable difference.

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        • R
          rancor
          last edited by

          Transport is the preferred method and it saves you 20 bytes but since the recommended MTU size is 1400 on both GRE + IPsec (Transport mode) = 1440 and GRE + IPsec (Tunnel mode) = 1420 there is no bigger difference between them.

          Just don't forget to set MTU on GRE interface or you will lose data

          // rancor

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