Backward compatibility with LLI drivers

SCO OpenServer network adapter drivers contain a new driver interface called MDI (MAC Driver Interface). The new driver architecture is compatible with the earlier LLI (Link Level Interface) driver architecture. Nonetheless, you should review these sections if you are working in an environment where both architectures are present:

• ``MDI functionality not available with LLI drivers''

• ``Using multiple protocol stacks with LLI drivers''

• ``Using an LLI driver with two-protocol stacks''

• ``Using an LLI driver with three-protocol stacks''