Lightweight Reliability Transport Protocol for Fibre-Channel Load-Balancing

The patent introduces service engines as intermediary components that host the protocol intelligence for acceleration services. These service engines act as mediators between the end-points and the acceleration functionality, allowing traffic to be redirected through intermediate nodes. This intermediary architecture enables both write acceleration and multi-path link support, as the service engines can distribute traffic across multiple paths while maintaining acceleration capabilities.

The patent transitions from a two-endpoint architecture to a three-component architecture by introducing service engines in the middle. This dimensional change allows the system to simultaneously support acceleration services and ECMP/port-channel functionality, as the service engines provide an additional layer where traffic can be distributed across multiple paths while maintaining the acceleration processing capability.

The patent uses service engines as intermediaries to host tape acceleration functionality. Instead of placing intelligence directly at end-points, the service engines provide the acceleration services for tape workflows while sitting in the fabric. This allows port-channels to be utilized for redundancy and load-balancing, as the service engines can distribute tape acceleration traffic across multiple physical links.

The patent implements tape acceleration by copying the acceleration functionality into service engines rather than embedding it at end-points. This copying approach allows the same acceleration logic to be shared across multiple paths and deployed independently at different locations in the fabric, enabling both tape acceleration and port-channel support simultaneously.