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Barracuda CloudGen Firewall

This Firmware Version Is End-Of-Support

Documentation for this product is no longer updated. Please see https://campus.barracuda.com/doc/71862301/ for further information on our EoS policy.

How to Configure Linux Standard Multipath Routing

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Barracuda Networks recommends using ACPF-assisted multipath routing. For more information, see How to Configure Multipath Routing.

The Barracuda NG Firewall supports Linux standard multipath routing. Simple redundancy by next hop detection is provided by adding multiple routing entries with different route metrics. Linux-based standard multipath routing provides source IP-based balancing between next hops. Once the source destination combination is in the routing cache, this combination will stay on the selected next hop IP address. For dead next hop detection per ARP request or session packet balancing, use ACPF-assisted multipath routing.

Step 1. Add a Linux Standard Multipath Route

  1. Open the Network page (Config > Full Config > Box).
  2. In the left menu, click on Routing
  3. In the left menu, expand Configuration Mode and click on Switch to Advanced Mode.
  4. Add an entry to the Routes table.
  5. Enter the Target Network Address. E.g., 192.168.100.0/24
  6. Click to add Multipath Gateways and provide the following Information: 
    • Multipath Gateway – Next hop IP address of the multipath route.
    • Weight Number – Weight number of path (valid range from 1 - 100).
    • Assigned Source IP – The assigned source IP address.
  7. Click OK.
  8. Click Send Changes and Activate.

Step 2. Activate Network Configuration

  1. Open the Box page (CONTROL > Box).
  2. In the left menu, expand Network and click Activate new network configuration. The Activate Network window opens.
  3. Click Soft. The Activation Succeeded window opens.
  4. Click OK.

Open the CONTROL > Network page. If a green icon (route_active.png) is displayed in the first column for the multipath route, the route is active.

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