Bridge forwarding method and apparatus
DC CAFCFirst Claim
1. A forwarding method, comprising:
- receiving, via an input port, a frame associated with a first virtual local area network (VLAN);
obtaining an input VLAN identifier (ID) representing the first VLAN and a destination media access control (MAC) address of the received frame;
determining a Virtual Switching Instance (VSI) corresponding to the combination of the input port and the input VLAN ID;
obtaining an output port and an output VLAN ID, wherein the output VLAN ID represents a second VLAN and wherein the output port and the output VLAN ID relate to the destination MAC address and the VSI; and
communicating the received frame and the output VLAN ID to the obtained output port, wherein the output VLAN ID is different from the input VLAN ID.
1 Assignment
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Accused Products
Abstract
A bridge forwarding method comprises: receiving a frame from an input port, obtaining the input VLAN ID and a destination MAC address of the frame; determining an output port and an output VLAN ID of the frame, and forwarding the frame according to the output port and the output VLAN ID. A bridge forwarding apparatus includes at least one output port used for receiving a frame from more than one VALN, at least one output port used for transmitting the frame to more than one VALN and a forwarding unit, the forwarding unit obtains the input VLAN ID and the destination MAC address in the frame, determines the output port and the output VLAN ID of the frame, and outputs the frame to the corresponding output port. The method and the apparatus of this invention can realize the bridge forwarding of the Ethernet frames between multiple VLANs.
33 Citations
23 Claims
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1. A forwarding method, comprising:
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receiving, via an input port, a frame associated with a first virtual local area network (VLAN); obtaining an input VLAN identifier (ID) representing the first VLAN and a destination media access control (MAC) address of the received frame; determining a Virtual Switching Instance (VSI) corresponding to the combination of the input port and the input VLAN ID; obtaining an output port and an output VLAN ID, wherein the output VLAN ID represents a second VLAN and wherein the output port and the output VLAN ID relate to the destination MAC address and the VSI; and communicating the received frame and the output VLAN ID to the obtained output port, wherein the output VLAN ID is different from the input VLAN ID. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A bridge forwarding apparatus comprising:
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an input port configured to receive a frame from at least two virtual local area networks (VLAN); a forwarding unit that executes; in a storing module storing a plurality of relationships between combinations of the input port and input VLAN identifier and Virtual Switching Instances (VSI); and
storing MAC address forwarding tables corresponding to the VSI, wherein at least one combination of input port and input VLAN ID corresponds to one VSI;in an input analyzing module obtaining the input VLAN ID and the destination MAC address of the received frame, and outputting the input VLAN ID and the destination MAC address; in a first forwarding module determining the VSI corresponding to the combination of the input port and the input VLAN ID according to the relationship between the combination of the input port and the input VLAN ID and the VSI, and obtaining an output port and an output VLAN ID by searching the MAC address forwarding table corresponding to the VSI; and in a second forwarding module forwarding the frame according to the output port and the output VLAN ID obtained by the first forwarding module; and an output port configured to communicate the received frame to more than one VLAN according to the output VLAN ID. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification