Networking

Implementing a BGP-Free ISP Core With LISP

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Executive Summary

The sustained growth pace of the global routing table is exerting an economical strain on ISPs by requiring untimely router upgrades. Notably, it has been speculated that the growth rate of router FIBs is surpassing that of its supporting technology and that the deployment of IPv6 is only to make matters worse. In this paper, the authors propose LISP-MPS, an architecture based on LISP, that isolate the intra-domain routing of an Autonomous System (AS) from its inter-domain routing. The resulting separation implies the decrease of backbone routing table sizes and enables an AS to control the forwarding of traffic inside its network.

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