Using MPLS Based Solution for Middlebox Policy Enforcement in Software Defined Network
Date Issued
2016
Date
2016
Author(s)
Huang, Yuan-Ting
Abstract
Middleboxes play a critical role in software defined network (SDN) to ensure network security and to reduce network transmission overhead. A controller in SDN needs whole network information for inserting right forwarding rules in switches. However, due to the proprietary nature of middleboxes, a SDN controller may have limited visibility to set up forwarding rules that account for intern transformations of middleboxes. Besides, surveys show that the placement of middleboxes may cause conflicting rules in switches.In response we develop a FastLabel architecture. FastLabel is an tagging method based on MPLS which is used to forward packets and find inter transformations middleboxes want to hide. In addition, we insert a tag into VLAN field for solving conflicted rules caused by the placements of middleboxes. Our method makes controller know whole network information without modifying middleboxes and switches. The experiment shows that our method is 34% faster than other works for inserting forwarding rules into switches, less controller overhead and less middlebox overhead.
Subjects
middleboxes
software defined network
MPLS
conflicting rules
SDGs
Type
thesis
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