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Which entity is responsible for maintaining Layer 2 isolation between segments In a VXLAN environment?

Which entity is responsible for maintaining Layer 2 isolation between segments In a VXLAN environment?
A . switch fabric
B . VTEP
C . VNID
D . host switch

Answer: C

Explanation:

VXLAN uses an 8-byte VXLAN header that consists of a 24-bit VNID and a few reserved bits. The VXLAN header together with the original Ethernet frame goes in the UDP payload. The 24-bit VNID is used to identify Layer 2 segments and to maintain Layer 2 isolation between the segments.

Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/vxlan/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_VXLAN_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_VXLAN_Configuration_Guide_7x_chaptr_010.html

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