Design and Building of P4 Programmable Network Testbed and Reservation System on TWAREN

This paper introduces the P4 programmable testbed built by TWAREN. In this testbed, you can define how the P4 switch handles packets by writing P4 language code, providing more customization than the SDN network. However, hardware P4 switches are expensive, and many users often use BMv2 for research due to financial reasons. Therefore, we have selected several nodes on the TWAREN network to build multiple physical P4 switches and connected them via VPLS to form a large remote P4 programmable testbed. With P4 programmable testbed, users can verify their mechanism on a large-scale physical network.