PACKET FORWARDING IN SOFTWARE DEFINED NETWORKING

摘要

Based on an example, two forwarding pipelines are configured in a software defined networking (SDN) switch. After receiving, from an SDN controller, a flow entry adding instruction comprising a flow entry to be added and a table identifier (ID) indicating a flow table that the flow entry is to be added to, an SDN switch adds the flow entry into the flow table corresponding to the table ID, wherein the flow table is in the first forwarding pipeline or the second forwarding pipeline. If the flow table and its next flow table are in different forwarding pipelines, the SDN switch adds an action of forwarding to the internal interface to the flow entry.

主权项

1. A method for forwarding a packet by a software defined networking (SDN) switch, comprising:
receiving, from an SDN controller, a flow entry adding instruction comprising a flow entry to be added and a table identifier (ID) indicating a flow table that the flow entry is to be added to; adding the flow entry into the flow table corresponding to the table ID, wherein the flow table is in the first forwarding pipeline or the second forwarding pipeline, the first forwarding pipeline is in a forwarding chip of the SDN switch, the second forwarding pipeline is in a memory of the SDN switch; one or more flow tables in the first forwarding pipeline and one or more flow tables in the second forwarding pipeline are connected in series; there is an internal interface between the first forwarding pipeline and the second forwarding pipeline; if the flow table and its next flow table are in different forwarding pipelines, adding an action of forwarding to the internal interface to the flow entry.