Anycast Gateway with VXLAN

In this section:

  1. Configuring Anycast Gateway in a VXLAN Network
  2. Displaying Anycast Gateway VXLAN Information
    You can use a show command to view information about anycast gateway with VXLAN configurations.
Parent topic: VXLAN

Feature Overview

Anycast gateway with Virtual Extensible Local Area Network (VXLAN) allows the same gateway IP addresses to be used across all Virtual Tunnel End Points (VTEPs) in a VXLAN network. This ensures that every VTEP can act as the default gateway for connected devices. Anycast gateway enables seamless host mobility, flexible workload placement, and optimal traffic forwarding throughout the VXLAN fabric.

Important Terminology for Anycast Gateway with VXLAN

The below are common terms used in reference to anycast gateway with VXLAN:

  • ARP: Address Resolution Protocol
  • EVPN: Ethernet Virtual Private Network.
  • MAC: Media Access Control
  • VE: Virtual Ethernet
  • VLAN: Virtual Local Area Network
  • VNI: Virtual Network Identifier
  • VRF: Virtual Routing and Forwarding
  • VTEP: Virtual Tunnel End Point. In BGP EVPN terms, a VTEP can also be referred to as a leaf. Refer to the BGP EVPN VXLAN and BGP EVPN Multihoming sections for more information.
  • VXLAN: Virtual Extensible Local Area Network

Requirements

  • Anycast gateway with VXLAN is supported on all RUCKUS ICX platforms, except ICX 8200.

Considerations

  • Anycast gateway with VXLAN is disabled by default.
  • The current anycast gateway with VXLAN method supported is manual MAC configuration. This involves manually configuring the same MAC address, on the virtual Ethernet (VE) interfaces for which overlay virtual routing and forwarding (VRF) is configured, for all VTEPs within the VXLAN network.
  • To enable anycast gateway with VXLAN, you must configure an anycast gateway MAC address on an IP interface that supports VRF. Anycast gateway with VXLAN becomes active on the IP interface once an anycast MAC address is configured.

Limitations

  • IPv6 is not supported.
  • Only VE interfaces are supported.
  • Dynamic routing is not supported for anycast gateway.
  • The maximum number of anycast gateway IP interfaces that can be configured is the same as the maximum number of VE interfaces supported by the platform. This number may vary if the Virtual Router Redundancy Protocol (VRRP) or IP MAC address is enabled for other VE interfaces.
  • ICX 8200 devices do not support anycast gateway with VXLAN.

Prerequisites

  • Devices must support VXLAN protocols. For more details on VXLAN device support for RUCKUS ICX devices, refer to the RUCKUS FastIron Features and Standards Support Matrix.
  • VLANs must be configured in advance.
  • VE interfaces must be configured with overlay VRF.