How does a virtual machine move seamlessly within a network in an EVPN environment?

The correct answer is A. The IP-to-MAC binding for the default gateway is maintained across the network independent of. EVPN uses an anycast gateway and distributes MAC+IP (ARP/NDP) bindings via BGP. Because every PE advertises the same gateway MAC and knows the host’s MAC/IP binding, the VM can move to a new PE - its L2 adjacency and default gateway remain unchanged, yielding seamless

Layer 2 VPNs

Question

Options

AThe IP-to-MAC binding for the default gateway is maintained across the network independent of
BThe virtual machine sends out a broadcast message after changing locations to seamlessly
CA central server automatically assigns a new IP address to the virtual machine via dial-out.
DThe administrator updates the MAC address of the virtual machine in the CAM table after the

How the community answered

(46 responses)

A
76% (35)
B
13% (6)
C
7% (3)
D
4% (2)

Explanation

EVPN uses an anycast gateway and distributes MAC+IP (ARP/NDP) bindings via BGP. Because every PE advertises the same gateway MAC and knows the host’s MAC/IP binding, the VM can move to a new PE - its L2 adjacency and default gateway remain unchanged, yielding seamless

Topics

#EVPN#VM mobility#IP-MAC binding#Layer 2 extension

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