| 摘要 |
A network element (101-104) of a software-defined network is adapted to construct a configuration system on the basis of configuration data received from a controller (105, 106) of the software-defined network. The network element is arranged to transmit, in response to an event indicating a need to verify the configuration system, status information to the controller. The event may include for example a loss and a subsequent re-establishment of a connection between the network element and the controller. The status information indicates a first portion of the configuration data which has been implemented in the configuration system prior to the event. After receiving the status information, the controller is able transmit an appropriate second portion of the configuration data to the network element so as to enable verification of an appropriate portion of the configuration system. Thus, there is no need to verify the whole configuration system after the event. |
| 主权项 |
1. A network element for a software-defined network, the network element comprising:
a data transfer interface for receiving, from a controller system communicatively connected to the network element, configuration data enabling the network element to construct a configuration system so as to enable the network element to operate as a part of the software-defined network, and a processing system for constructing the configuration system on the basis of the configuration data,wherein the processing system is adapted to:
control, in response to an event indicative of a need to verify the configuration system, the data transfer interface to transmit status information to the controller system, the status information indicating a first portion of the configuration data, where the first portion of the configuration data has been implemented in the configuration system prior to the event, and verify, in response to receiving a second portion of the configuration data, a portion of the configuration system corresponding to the second portion of the configuration data, the second portion of the configuration data comprising data external to the first portion of the configuration data and verifying the portion of the configuration system being one of the following: checking integrity of the portion of the configuration system on the basis of the second portion of the configuration data, restoring the integrity of portion of the configuration system on the basis of the second portion of the configuration data, reconstructing the portion of the configuration system on the basis of the second portion of the configuration data. |
