Name
Abstract | ||
|---|---|---|
Recently, the advances on programmable data plane (PDP) promote the studies on the network virtualization in a PDP-based substrate network (SNT). In this paper, we address the table resource virtualization and network slicing in PDP-based SNTs. We first leverage the idea of “Big-Switch” to design an effective table resource virtualization scheme in which the flow tables of a virtual switch (V-SW) can be installed in multiple adjacent substrate switches (S-SWs) according to their table sizes, while the feasible table size(s) on each S-SW are determined based on the global information of the SNT. By doing so, we can regulate the flow tables in the S-SWs in a more organized way to minimize memory fragmentation. Next, we address the network slicing based on the virtualization scheme, and come up with a three-layer VNE problem. To the best of our knowledge, such a VNE problem has not been studied before and the existing algorithms designed for traditional two-layer VNE problems can hardly solve it. We formulate an integer linear programming (ILP) model to solve the VNE problem exactly, and also design a time-efficient heuristic that can provide near-optimal solutions. Finally, we implement the heuristic in TPVX, which is a network hypervisor based on protocol-oblivious forwarding (POF), and also improve its performance by introducing source routing. The new TPVX is experimentally demonstrated in a real network testbed, and the results verify that our proposal maintains the additional latency caused by the three-layer VNE well and would not degrade the network services in virtual networks (VNTs). |
Year | DOI | Venue |
|---|---|---|
2020 | 10.1109/TNSM.2019.2941740 | IEEE Transactions on Network and Service Management |
Keywords | DocType | Volume |
Switches,Virtualization,Resource virtualization,Substrates,Network slicing,Optical fibers,Virtual machine monitors | Journal | 17 |
Issue | ISSN | Citations |
1 | 1932-4537 | 0 |
PageRank | References | Authors |
0.34 | 0 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yuhan Xue | 1 | 1 | 2.04 |
| Jianquan Peng | 2 | 4 | 1.43 |
| Kai Han | 3 | 269 | 21.79 |
| Zuqing Zhu | 4 | 566 | 73.36 |