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RS0034 - Nexus 1000V VXLAN

Average: 5 (1 vote)
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The video looks into Virtual Extension LAN (VXLAN) support on Cisco Nexus 1000V. VXLAN allows VLAN ID to be extended to 24 bits, or in other words, essentially increases number of available VLAN from 4096 to more than 16 million VLAN. We will configure VXLAN on port-profile. In this lab, we intentionally have VEM control interfaces separated by layer 3 to demonstrate MAC-in-IP encapsulation provided by VXLAN to extend an isolated layer 2 domain across a routable and multicast-enabled network. We will also analyze VXLAN packet from a capture on Wireshark.

  • VXLAN header is 50 Bytes
  • VXLAN uses UDP/8472 (same as OTV) for MAC-in-IP encapsulation
  • VXLAN ID is 4096 - 16000000
  • VXLAN uses multicast to transport broadcast traffic
Topic includes
  • VXLAN Configuration
  • Bidirectional Multicast
  • MAC-in-IP Encapsulation

About Author

Metha Cheiwanichakorn, CCIE#23585 (RS, Sec, SP), is a Cisco networking enthusiast with years of experience in the industry. He is currently working as a consulting engineer for a Cisco partner. As a founder of and an instructor at, Metha enjoys learning and challenges himself with new Cisco technologies.


good video

Thank you for your feedback. Glad you like it.

Nice video as usual. This really shows the concept of VXLAN. I cant wait for a video on VXLAN gateway.