STPPE: 差異性服務網路中送端通透封包預註機制之研製

Abstract

transparent packet pre-marking engine (STPPE) to help legacy applications maintain end-to-end throughput in DiffServ networks. By means of Linux Firewall, packets sent from legacy applications will be divert to a specific system port. After that, STPPE uses Linux Divert Socket to receive those packets, modifies the Differentiated Services Code Point (DSCP) fields in the IP headers, and then re-injects the packets into network. In this way, users’ traffic can be pre-marked without any modification of original legacy applications to inform the service provider that higher service is needed if their requirements can not be met.