Double-layer VXLAN tunnel packaging method based on VPP

According to the double-layer VXLAN tunnel encapsulation method based on the VPP, double layers of vxlands are configured in a vpp network element, double bridge-domain forwarding is adopted in a second layer, the double bridge-domain is interconnected in a third layer through vrf-0, message encapsulation and de-encapsulation are carried out on the inner layer vxlands in a bridge-domain-1, and message encapsulation and de-encapsulation are carried out on the outer layer vxlands in a bridge-domain-2. And the purpose of two-layer mutual access of on-cloud and under-cloud resources in the same subnet is achieved. 本申请的一种基于VPP的双层VXLAN隧道封装方法，通过在vpp网元中配置双层vxlan，在二层采用双bridge-domain转发，通过vrf-0将双bridge-domain在三层进行互联，在bridge-domain-1实现内层vxlan进行报文封装和解封装，在bridge-domain-2实现外层vxlan进行报文封装和解封装，达到云上与云下资源同子网二层互访的目的。