ARP with Anycast Gateways in EVPN Asymmetric IRB
The blog discusses ARP issues in EVPN environments, highlighting centralized routing and asymmetric IRB challenges, and explores the popularity and variations of anycast gateways, including active-active VRRP and shared MAC+IP configurations.
MAIN POINTS
- ARP issues in EVPN environments were previously discussed, focusing on centralized routing and asymmetric IRB.
- Anycast gateways are currently popular, despite varying implementations across vendor documentation.
- Active-active VRRP involves one active gateway, with all devices listening to the VRRP MAC address.
- Shared MAC+IP configurations can include device-specific or non-specific IP addresses.
TAKEAWAYS
- Understanding ARP issues is crucial for effective EVPN environment management.
- Anycast gateways offer a modern solution but require careful consideration of vendor-specific implementations.
- Active-active VRRP provides redundancy by allowing multiple devices to respond to the same MAC address.
- Shared MAC+IP configurations can simplify network design by reducing the need for device-specific addresses.