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Manual Chapter: Traffic Groups
Manual Chapter
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A traffic group is a collection of related configuration objects that run on a BIG-IP device. Together, these objects process a particular type of traffic on that device. When a BIG-IP device becomes unavailable, a traffic group can float to another device in a device group to ensure that the traffic for that application continues to be processed with little to no interruption in service. In general, a traffic group ensures that when a device becomes unavailable, all of the failover objects in the traffic group fail over to any one of the devices in the device group, based on the current workload of those devices.
Only certain types of configuration objects can belong to a traffic group. Examples of traffic group objects are floating self IP addresses and floating virtual IP addresses.
Another example of a type of object in a traffic group is an iAppsTM application service. If a device with this traffic group is a member of a device group and the device becomes unavailable, the traffic group floats, or fails over, to another member of the device group, and that member becomes the device that processes the application traffic.
When a traffic group fails over to another device in the device group, the device that the system selects to run the traffic group is normally the device that is most available from a workload perspective. However, when you initially create the traffic group on a device, you can specify the device in the group that you prefer that traffic group to run on whenever possible.
Note: You can assign a unique MAC masquerade address to each traffic group that you create. Assigning a MAC masquerade address reduces the risk of dropped connections or additional ARP messages during failover.
A default floating traffic group exists on every BIG-IP device. With a floating traffic group, the associated failover objects float to another device in a Sync-Failover device group whenever the device becomes unavailable. Every BIG-IP device contains a default floating traffic group named traffic-group-1 that contains all eligible configuration objects. Configuration objects that belong to a floating traffic group are known as failover objects.
Note: Whenever you assign a floating traffic group to a self IP address, a virtual IP address, or a SNAT translation address, those addresses become floating addresses.
A default non-floating traffic group named traffic-group-local-only exists on every BIG-IP device. With a non-floating traffic group, the associated configuration objects do not float because the device is not part of a device group.
Note: Whenever you assign a non-floating traffic group to a self IP address, a virtual IP address, or a SNAT translation address, those addresses become non-floating addresses.
To configure and manage traffic groups, log in to the BIG-IP Configuration utility, and on the Main tab, expand Network, and click Traffic Groups.
For detailed information on traffic groups and device groups, see the BIG-IP® Redundant Systems Configuration Guide.
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