H3C S5560X-EI Series - Centralized VXLAN IP Gateway Deployment

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Figure 8 VXLAN IP gateway separated from VTEPs
Centralized VXLAN IP gateway deployment
As shown in Figure 9, a VTEP acts as a gateway for user terminals in the VXLANs. The VTEP both
terminates the VXLANs and performs Layer 3 forwarding for the user terminals.
Figure 9 Centralized VXLAN IP gateway placement design
As shown in Figure 10, the network uses the following process to forward Layer 3 traffic from the
user terminal at 10.1.1.11 to the Layer 3 network:
1. The user terminal sends an ARP request to obtain the MAC address of the gateway (VTEP 3) at
10.1.1.1.
2. VTEP 1 floods the ARP request to all remote VTEPs.
VXLAN tunnel
VXLA
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VXLAN
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VTEP VTEP
VTEP/Centralized VXLAN
IP gateway
Terminal Terminal
Site 1
Site 3
Transport
network
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L3 network