What Are Advantages and Disadvantages of Direct Forwarding and Tunnel Forwarding?
Data Forwarding Mode |
Advantage |
Disadvantage |
|---|---|---|
Tunnel forwarding |
An AC forwards data packets in a centralized manner, ensuring security and facilitating centralized management and control. New devices are easy to deploy and configure, with small changes to the current network. |
Service data must be forwarded by an AC, reducing packet forwarding efficiency and burdening the AC. |
Direct forwarding |
Service data packets do not need to be forwarded by an AC, improving packet forwarding efficiency and reducing the burden on the AC. |
Service data packets cannot be centrally managed or controlled. New device deployment causes large changes to the existing network. |
Soft GRE forwarding |
In wired and wireless convergence, and centralized user authentication scenarios, data packets are forwarded to a convergence gateway through a soft GRE tunnel, without passing through an AC. This forwarding mode improves packet forwarding efficiency and reducing the burden on the AC. New devices are easy to deploy and configure, with small changes to the current network. |
Service data must be forwarded by a convergence gateway, burdening the gateway. The packet forwarding efficiency is lower than that in direct forwarding mode. |