Cisco Frame Relay Solutions Guide

Chapter 20. Link Fragmentation and Interleaving (LFI) for Frame Relay Virtual Circuits

Link Fragmentation and Interleaving (LFI) is a Cisco IOS link-layer efficiency mechanism designed to reduce serialization delay and jitters when transporting both real-time and non-real-time traffic on slow bandwidth links. The Cisco IOS LFI feature discussed in this chapter is based on Cisco's implementation of Multilink Point-to-Point Protocol (MLP) over Frame Relay and ATM, which supports the fragmentation and packet sequencing specifications outlined in RFC 1717. The Frame Relay Fragmentation features discussed in Chapter 16 similarly offer Link-Efficiency mechanisms for minimizing serialization delay for small delay-sensitive packets over slow-speed Frame ...