Inline Mode

About

In load balancer technology, Inline Mode is a deployment method where the TR7 Load Balancer is placed directly in the path of data traffic, with all traffic passing through the load balancer. This mode is also commonly known as Transparent Mode or Bridge Mode. In this configuration, TR7 acts like a cable and can be positioned without requiring any changes on the client or server side. There is no need for actions like DNS changes or modifying the default gateway. The client directly sends requests to the server, but all traffic passes through TR7, ensuring the Client IP address is always preserved.

Example Topology

LOGO

In an example Inline Mode topology, the Inline route table displays that the ETH-3 and ETH-4 network interfaces used by TR7 are included. A Bridge is created on these interfaces, and the IP address to be used for vService is defined on the Bridge interface. To preserve the Client IP address and ensure return traffic passes through TR7, Arpspoof is activated without manually changing the Backend Service's default gateway address.

Interface

Step > 1

By navigating to "Network > Route Tables," a new route table was added.

Step > 2

By navigating to "Network > Interfaces," the relevant network interfaces were included in the newly added Route Table. A Bridge interface was created, and the IP address to be used on the vService was added.

Step > 3

By navigating to "Traffic Manager > Backend Services," the relevant server's Route Table was selected as Inline. Details was activated, and "Use Client IP" was selected under SNAT. Then, Spoofing was enabled, and the related configurations were applied.

Step > 4

By navigating to "Network > Firewall," Forward and Allow rules were added for Inline.

Step > 5

Finally, a vService was created from the vServices screen, and the relevant Backend Service was selected as the default. Inline Mode was activated via QoS.