When to Use Group Mode
Use group mode in the following set of circumstances:
- You have multiple WAN links.
- There is a chance of asymmetric routing (a packet on a given connection might travel over either link).
- Group mode seems simpler and more practical than alternatives that use a single appliance.
The alternatives are:
- WCCP mode, in which traffic from two or more links is sent to the same appliance by WAN routers, by means of the WCCP protocol.
- Virtual inline mode, in which your routers send traffic from two or more links through the same appliance (or high-availability pair).
- Multiple bridges, where each link passes through a different accelerated bridge in the same appliance.
- LAN-level aggregation, which places an appliance (or high-availability pair) closer to the LAN, before the point where WAN traffic is split into two or more paths.
When to Use Group Mode
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