You are asked to build redundant gateways in your EVPN-VXLAN environment, but you must conserve address space because these gateways must span across seven PEs. What should you implement on the PEs…

The correct answer is C. Use IRB interfaces with the same IP and MAC address. In an EVPN-VXLAN environment, when you need redundant gateways across multiple PEs (for hosts in the same VLAN/VRF), you want all PEs to present a single logical gateway IP to the This is achieved using anycast IRB: Same IP address on all PEs -> ensures hosts have a single…

Overlay Networks

Question

You are asked to build redundant gateways in your EVPN-VXLAN environment, but you must conserve address space because these gateways must span across seven PEs. What should you implement on the PEs to satisfy these requirements?

Options

AUse IRB interfaces with the same IP address and different MAC addresses.
BUse IRB interfaces with the same IP and VGA.
CUse IRB interfaces with the same IP and MAC address.
DUse IRB interfaces with different IP addresses and the same VGA.

How the community answered

(30 responses)

A
13% (4)
B
3% (1)
C
77% (23)
D
7% (2)

Explanation

In an EVPN-VXLAN environment, when you need redundant gateways across multiple PEs (for hosts in the same VLAN/VRF), you want all PEs to present a single logical gateway IP to the This is achieved using anycast IRB: Same IP address on all PEs -> ensures hosts have a single default gateway. Same MAC address on all PEs -> ensures traffic is correctly forwarded to the closest PE without This design conserves IP address space because you don't need a unique gateway IP for each

Topics

#anycast gateway#IRB#EVPN-VXLAN#redundant gateways

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