Geneve is the protocol used for communicating between VM-Series firewalls and a gateway load

balancer in Amazon Web Services (AWS). A gateway load balancer is a type of network load balancer

that distributes traffic across multiple virtual appliances, such as VM-Series firewalls, in AWS. Geneve

is a tunneling protocol that encapsulates the original packet with an additional header that contains

metadata about the source and destination endpoints, as well as other information. Geneve allows

the gateway load balancer to preserve the original packet attributes and forward it to the

appropriate VM-Series firewall for inspection and processing. VRLAN, GRE, and VMLAN are not

protocols used for communicating between VM-Series firewalls and a gateway load balancer in AWS,

but they are related concepts that can be used for other purposes. Reference: Palo Alto Networks

Certified Software Firewall Engineer (PCSFE), [Deploy the VM-Series Firewall with AWS Gateway Load

Balancer], [Geneve Protocol Specification]