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Because GCP network infrastructure is different from AWS and Azure, Aviatrix High Performance Encryption mode for GCP differs from AWS and Azure in the following ways:
  • Only Spoke and Transit Gateway types are supported.
  • Only Multicloud Transit functionality is supported with High Performance Encryption Mode gateways
  • The Advertise Transit VPC Network CIDR(s) feature is not supported with a High Performance Encryption Mode Gateway.
  • GCP High Performance Encryption Mode supports only ActiveMesh 2.0.
For GCP High Performance Encryption, MTU is 1460 and MSS is 1330 bytes.

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Subnet Prefix Length for GCP High Performance Encryption Mode

For GCP High Performance Encryption, the gateway subnet prefix length cannot be greater than /24.
Aviatrix highly recommends that customers utilize a subnet exclusively for deploying High Performance Encryption enabled gateway without any other instances in the subnet.