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    Defining the Tunnel MTU

    You can configure the maximum transmission unit size for the tunnel.

    To specify the maximum transmission unit size for a particular tunnel:

    • From IPsec Tunnel Profile Configuration mode, configure the size.
      host1(config-ipsec-tunnel-profile)#tunnel mtu 3000

      Use the no version to restores the default value, an MTU size of 1400 bytes.

    Published: 2014-08-12