Examining VXLAN

Question 1

What is Virtual Extensible LAN (VXLAN)?

Answer 1

A network virtualization technology designed to provide scalable, isolated networks in cloud computing environments.

Question 2

What are the segmentation options provided by VXLAN compared to traditional VLAN?

Answer 2

VXLAN provides significantly more segmentation options than the 4096 VLAN IDs available in traditional VLAN.

Question 3

What are the benefits of VXLAN over traditional VLANs?

Answer 3

• Scalability
• Cross Data Center Connectivity
• Network Segmentation

Question 4

How does VXLAN improve scalability?

Answer 4

VXLAN supports up to 16 million VNIs, offering greater scalability than the 4096 unique IDs of VLANs.

Question 5

What is the benefit of VXLAN in terms of Cross Data Center Connectivity?

Answer 5

VXLAN can stretch Layer 2 networks across geographically dispersed data centers, unlike VLANs, which are typically confined to a single physical location.

Question 6

How does VXLAN enhance network segmentation?

Answer 6

VXLAN provides enhanced network segmentation capabilities, essential in multi-tenant or cloud environments where VLAN’s capabilities might be insufficient.

Question 7

What limitations of VLAN does VXLAN overcome?

Answer 7

• Address Space Limitation
• Layer 2 Extension
• Multi-Tenancy Support

Question 8

How does VXLAN address the Address Space Limitation?

Answer 8

Overcomes the 4096 VLAN ID limitation, addressing the needs of larger and more dynamic environments.

Question 9

What is the significance of Layer 2 Extension in VXLAN?

Answer 9

Enables Layer 2 network extension over Layer 3 infrastructure, facilitating more flexible and efficient network designs.

Question 10

How does VXLAN support Multi-Tenancy?

Answer 10

Better supports multi-tenancy environments, crucial for modern data centers and cloud services, where traditional VLANs may fall short.