Method for routing data packets, and devices for implementing the method
AssigneeThomson Licensing
InventorsSylvain Dumet, Jan Voet
Life of this patent
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Abstract
The present invention is related to a method for routing data packets in a routing device connecting a first network and a second network, and to a corresponding routing device. The method comprises the steps of receiving a frame from a device connected to the first network; forwarding the frame to an internal bridge module of the device; checking whether the frame contains a multicast group management message and in the affirmative, creating a new frame comprising as destination address the destination address of an internal multicast group management module and as payload at least the multicast management data of the received frame; and forwarding this new frame to the internal bridge function.
Claims10
Method for routing data packets in a routing device connecting a first network and a second network, comprising the steps of:
- (a) receiving a frame from a device connected to the first network;
- (b) forwarding the frame to an internal bridge function of the device;
- wherein the bridge function is adapted to forward a frame based on a destination address of the frame:
- (c) checking whether the frame contains a multicast group management message and in the affirmative, creating a new frame comprising as destination address the destination address of an internal multicast group management module and as payload at least the multicast management data of the received frame;
- and
- (d) forwarding this new frame to the internal bridge function.
Routing device for connecting a first and a second network, said device comprising:
- (a) a switch for receiving frames from the first network;
- (b) an internal bridge function for delivering frames to appropriate modules as a function of respective frame destination addresses, said bridge function being connected to the switch;
- (c) a multicast group management module for maintaining up to date multicast group information based on frames received on the first network, said multicast group management module being connected to the bridge function for receiving selected frames there from;
- wherein the switch is adapted to determine whether a received frame comprises a multicast group management message, and in the affirmative, providing a new frame comprising multicast group management information extracted from the original frame, wherein the second frame has a destination address equal to the address of the multicast group management module, and for forwarding the new frame to the bridge function.
Dependencies are inferred from the claim text.