SDN virtualization platform uplink signaling flow label processing method based on OpenFlow

Abstract

The invention discloses an SDN virtualization platform uplink signaling flow label processing method based on OpenFlow. The method comprises the following steps: receiving a data packet; a physical switch, when receiving the data packet, first of all, checking the flow meter in the physical switch, and if no items matching the data packet exist in the flow meter, packaging the pack header of the data package in an uplink signaling for sending to a network virtualization platform; the network virtualization platform serving as a controller of the physical switch; the network virtualization platform receiving the submitted data packet; determining whether the data packet carries a flow label; if the data packet carries the flow label, it being indicated that the data packet is a data packet inside a virtual network; and if the data packet does not carry the flow label, it being indicated that the data packet is a non-classified data packet.

Description

technical field [0001] The invention belongs to the technical field of computer networks, in particular to an OpenFlow-based SDN virtualization platform upstream signaling flow label processing method. Background technique [0002] With the rapid development of Internet technology, the number of Internet applications and users has increased rapidly, and the Internet based on TCP / IP has gradually exposed many problems and drawbacks. Many countries have proposed next-generation Internet plans, and software-defined networks have emerged as the times require. [0003] The OpenFlow software-defined network consists of two parts: the data plane, used to forward network data packets; the control plane, used to control the forwarding strategy of network data packets. The OpenFlow switch of the data plane maintains a flow table inside, which is called the virtual network flow rule description table. The virtual network flow rule description table can be matched according to the cha...

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Problems solved by technology

In this way, each hop needs to judge the virtual network, which is inefficient.

[0008] 2) The OpenFlow protocol allows the switch to flexibly modify the data packet. When a data packet is operated by a virtual network, some fields of the data packet may be changed. After the data packet enters another OpenFlow switch, it may be virtualized by the network The platform judges it as a data packet of another virtual network, which leads to a data packet being controlled by different OpenFlow controllers corresponding to the virtual network, and the data packet isolation is poor

[0009] 3) Although the network virtualization platform checks and modifies the matching items in the virtual network flow rule description table issued by the OpenFlow controller corresponding to the virtual network, it does not check the mutual exclusion of the flowspace, which leads to The virtual network flow rule description table issued by the corresponding OpenFlow controller may match the data packet corresponding to virtual network 2, resulting in signaling out of bounds

[0010] 4) The network virtualization platform does not define the physical scope of the virtual network, which will cause the virtual network data packets to spread arbitrarily, and the data packets are not closed

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