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CloudEngine 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches VXLAN Best Practices

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VXLAN Advantages

VXLAN Advantages

When server virtualization is widely deployed in data centers based on physical network infrastructure, VXLAN offers the following benefits:

  • Supports a maximum of 16M VXLAN segments with 24-bit VXLAN network identifiers (VNIs), so that a data center can accommodate numerous tenants.
  • VNIs fall into Layer 2 and Layer 3 VNIs. It can be associated with BDs and VPN instances. VXLAN can support complex services such as L2VPN and L3VPN.
  • Reduces the number of MAC addresses that network devices need to learn and enhances network performance because only devices at the edge of the VXLAN network need to identify VM MAC addresses.
  • Extends Layer 2 networks using MAC-in-UDP encapsulation and decouples physical and virtual networks. Tenants are able to plan their own virtual networks, without being limited by the physical network IP addresses or broadcast domains. This greatly simplifies network management.
  • The source UDP port in the VXLAN header is hashed based on inner flow information. The underlay network can implement load balancing without parsing inner packets, implementing high throughput.
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Updated: 2018-07-02

Document ID: EDOC1100004176

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