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| Content Provider | ACM Digital Library |
|---|---|
| Author | Kotani, Daisuke Okabe, Yasuo |
| Abstract | Protecting control planes in networking hardware from high rate packets is a critical issue for networks under operation. One common approach for conventional networking hardware is to offload expensive functions onto hard-wired offload engines as ASICs. OpenFlow networks are expected to provide greater network control flexibility by an open interface to the packet-forwarding plane and by centralized controllers. In OpenFlow networks, the approach for conventional networking hardware alone is inadequate because it restricts a certain amount of flexibility that OpenFlow is expected to provide. Therefore, we need a generic control plane protection mechanism in OpenFlow switches as a last resort. In this paper, we propose a mechanism to filter out Packet-In messages without dropping important ones for network control. Our proposed mechanism works simply. Switches record the values of packet header fields before sending Packet-In messages, which are specified by the controllers in advance, and filter out packets that have the same values as the recorded ones. We implemented and evaluated the proposed mechanism on a prototype software switch, concluding that it dramatically reduces CPU loads in the switches and passes important Packet-In messages for network control. |
| Starting Page | 29 |
| Ending Page | 40 |
| Page Count | 12 |
| File Format | |
| ISBN | 9781450328395 |
| DOI | 10.1145/2658260.2658276 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2014-10-20 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Software-defined networking Network security |
| Content Type | Text |
| Resource Type | Article |
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