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Configure a Distributed Anycast Gateway

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Versa-logo-release-icon.pngFor supported software information, click here.

A distributed anycast gateway facilitates workload mobility by allowing multiple VXLAN branches to act as the default IP gateway for all clients that are attached to them. The multiple branches are configured with the same IP and MAC addresses. Because the ARP entry remains unchanged for the default IP gateway, the traffic from the client is not lost or flooded, which happens with unknown unicast traffic when the client moves within the same VXLAN network.

Configure a Distributed Anycast Gateway (Releases 23.1.1 and Later)

To configure a distributed anycast gateway on a branch:

  1. In Director view:
    1. Select the Administration tab in the top menu.
    2. Select Appliances in the left menu bar.
    3. Select an appliance in the main pane. The view changes to Appliance view.
  2. Select the Configuration tab in the top menu bar.
  3. Select Networking > Interfaces in the left menu bar. The Interfaces dashboard screen displays.

    interfaces-irb.png
  4. Select the IRB tab in the horizontal menu bar, and then select an IRB interface. The Edit IRB Interface screen displays.

    edit-irb-interface.png
  5. In the Subinterfaces section, click the add-icon-black-on-white.png Add icon.
  6. Select the General tab, and enter a unit number for the subinterface.

    add-irb-general-tab.png
  7. Select the IPv4 tab, and enter information for the following fields.

    irb-anycast-gateway.png
     
    Field Description
    Enable IPv4 Click to enable IPv4.
    Static Address Click the add-icon-black-on-white.png Add icon and enter an IPv4 address and mask.
    Anycast Gateway (Tab)  
    • Subnet Address/Mask (Required)
    		 Select the subnet IP address to configure the anycast gateway.
    • IP Address (Required)
    		 Enter the IP address of the anycast gateway that belongs to the IP subnet address/mask network.
    • MAC Address  (Required)
    		 Enter the MAC address of the anycast gateway.
  8. Click OK.

Configure a Distributed Anycast Gateway (Releases 22.1.4 and Earlier)

  1. In Director view:
    1. Select the Administration tab in the top menu.
    2. Select Appliances in the left menu bar.
    3. Select an appliance in the main pane. The view changes to Appliance view.
  2. Select the Configuration tab in the top menu bar.
  3. Select Networking > Interfaces in the left menu bar. The Interfaces dashboard screen displays.


     
  4. Select the IRB tab in the horizontal menu bar, and then select an IRB interface. The Edit IRB Interface screen displays.


     
  5. In the Subinterfaces section, click the add-icon-black-on-white.png Add icon.
  6. Select the General tab, and enter information for the following fields.


     
    Field Description
    Unit (Required) Enter a unit number for the subinterface.
    Anycast Gateway (Group of Fields)
    • IP Address
    		 Enter the IP address of the anycast gateway.
    • MAC Address
    		 Enter the MAC address of the anycast gateway.
  7. Select the IPv4 tab.


     
  8. Click Static Address, and then click the add-icon-black-on-white.png Add icon and enter an IPv4 address and mask.
  9. Click OK.

Supported Software Information

Releases 22.1.1 and later support all content described in this article, except:

  • Release 23.1.1 adds support for configuring anycast gateway IP addresses for subnet IPs, and the Anycast Gateway configuration is moved to the IPv4 tab.