Method, device and system for data stream transmission

A method for data stream transmission, comprising:

• receiving, by an on-duty device, a message indicating to enter into an energy-saving state;
• after receiving the message indicating to enter into the energy-saving state, receiving and synchronizing, by the on-duty device, user information sent by a resting device;
• and
• after the user information is synchronized, setting, by the on-duty device, transmission state as main and performing a data stream switching, wherein the data stream switching is performed between the resting device and the on-duty device, and the on-duty device is a device in the working state after the data stream switching, while the resting device is a device in the sleeping state after the data stream switching,
• wherein setting the transmission state as main and performing the data stream switching comprises:
• distributing a user's routing to an upstream device to trigger the data stream switching;
• setting the device priority as high according to a Virtual Router Redundancy Protocol of the device, so as to set the transmission state as main;
• and
• sending Address Resolution Protocol packets to a downstream device.

A resting device for data transmission, comprising:

• a receiving unit configured to receive a message indicating to enter into an energy-saving state;
• a synchronizing unit configured to send stored user information to an on-duty device for data transmission so that the on-duty device for data transmission receives and synchronizes the user information, after the receiving unit receives the message indicating to enter into the energy-saving state, wherein a data stream switching is performed between the resting device and the on-duty device, and the on-duty device is a device in the working state after the data stream switching, while the resting device is a device in the sleeping state after the data stream switching;
• and
• a setting unit configured to set transmission state as standby and enter into the sleeping state, after the user information is synchronized,
• wherein after the user information is synchronized, the on-duty device sets transmission state as main and performs a data stream switching, wherein the on-duty device setting the transmission state as main and performing the data stream switching comprises:
• distributing a user's routing to an upstream device to trigger the data stream switching;
• setting the device priority as high according to a Virtual Router Redundancy Protocol of the device, so as to set the transmission state as main;
• and sending Address Resolution Protocol packets to a downstream device.

An on-duty device for data transmission, comprising:

• a receiving unit configured to receive a message indicating to enter into an energy-saving state;
• a synchronizing unit configured to receive and synchronize user information sent by a resting device for data transmission, after the receiving unit receives the message indicating to enter into the energy-saving state;
• and
• a setting unit configured to set transmission state as main and perform a data stream switching, after the user information is synchronized, wherein the data stream switching is performed between the resting device and the on-duty device, and the on-duty device is a device in the working state after the data stream switching, while the resting device is a device in the sleeping state after the data stream switching,
• wherein the setting unit setting the transmission state as main and performing the data stream switching comprises:
• distributing a user's routing to an upstream device to trigger the data stream switching;
• setting the device priority as high according to a Virtual Router Redundancy Protocol of the device, so as to set the transmission state as main;
• and
• sending Address Resolution Protocol packets to a downstream device.

A system for data stream transmission, comprising:

• a resting device for data transmission configured to:
• receive a message indicating to enter into an energy-saving state;
• send stored user information to an on-duty device for data transmission after receiving the message indicating to enter into the energy-saving state;
• and set transmission state of the resting device as standby and enter into a sleeping state after the user information is synchronized;
• the on-duty device for data transmission configured to:
• receive a message indicating to enter the energy-saving state;
• receive and synchronize the user information sent by the resting device for data transmission after receiving the message indicating to enter into the energy-saving state;
• and set the transmission state of the on-duty device as main and perform a data stream switching after the user information is synchronized, wherein the data stream switching is performed between the resting device and the on-duty device, and the on-duty device is a device in the working state after the data stream switching, while the resting device is a device in the sleeping state after the data stream switching, wherein the on-duty device setting the transmission state as main and performing the data stream switching comprises:
• distributing a user's routing to an upstream device to trigger the data stream switching;
• setting the device priority as high according to a Virtual Router Redundancy Protocol of the device, so as to set the transmission state as main;
• and sending Address Resolution Protocol packets to a downstream device;
• and
• a network management device configured to detect the network traffic, send the message indicating to enter into the energy-saving state to the resting device for data transmission, and send the message indicating to enter into the energy-saving state to the on-duty device for data transmission.