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Method and device for forwarding multicast data packets from vlan to vxlan

A multicast data and message technology, applied in the field of network communication, can solve problems such as the inability to realize Layer 3 multicast forwarding

Active Publication Date: 2019-08-02
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] for example, figure 1 In the shown network, after the multicast data packet sent by the PC is VXLAN-encapsulated at the non-gateway node and reaches the gateway node, the gateway node decapsulates the multicast data packet with VXLAN and finds that the destination MAC address of the multicast data packet is multicast MAC address, and the destination IP address of the multicast data packet is a multicast IP address, according to the normal processing method, the gateway node will perform Layer 3 multicast multicast replication and forwarding on the multicast data packet after VXLAN decapsulation, but Limited to the forwarding logic of the hardware switching chip on the gateway node, even if the hardware switching chip of the gateway node supports Layer 3 multicast forwarding, it cannot implement Layer 3 multicast forwarding, and can only perform Layer 2 multicast data packets after VXLAN decapsulation. Forward

Method used

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  • Method and device for forwarding multicast data packets from vlan to vxlan
  • Method and device for forwarding multicast data packets from vlan to vxlan
  • Method and device for forwarding multicast data packets from vlan to vxlan

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example V

[0101] Determine the target output port according to the multicast group member port, select the interface board where the target output port is located as the interface board associated with the multicast group member port; carry out the second multicast data message after modification Internal encapsulation, sending the message of the second internal encapsulation to the interface board where the target egress port is located; the second internal encapsulation includes: the VXLAN tunnel encapsulation entry index and the virtual forwarding instance VFI corresponding to the multicast group member port;

[0102] Preferably, the interface board processing unit performs VXLAN encapsulation on the received multicast data message and forwards it to VXLAN through the following steps:

[0103] Determine the VXLAN tunnel encapsulation table entry index and VFI from the second internal encapsulation header of the multicast data message and decapsulate the second internal encapsulation o...

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Abstract

This application provides a method and device for forwarding multicast data packets from a VLAN to a VXLAN. In the present invention, the network board of the gateway VXLAN switch no longer uses a network chip with only message forwarding function, but uses a chip with forwarding function and entry function, such as the same switching chip as the interface board. In the present invention, the gateway VXLAN switch implements the three-layer gateway function of VXLAN to realize the forwarding of multicast data packets from VLAN to VXLAN, and the whole process is only executed inside the gateway VXLAN switch without wasting any bandwidth resources, achieving group Broadcast data packets are forwarded at wire speed.

Description

technical field [0001] The present application relates to network communication technology, in particular to a method and device for forwarding multicast data packets from a virtual local area network (VLAN: Virtual Local Access Network) to a virtual extensible local area network (VXLAN: Virtual eXtensible Local Access Network). Background technique [0002] At present, even if the hardware switching chip of the gateway node supports Layer 3 multicast forwarding, the forwarding logic of the hardware switching chip does not allow Layer 3 multicast forwarding, and can only perform Layer 2 multicast forwarding. [0003] for example, figure 1 In the shown network, after the multicast data packet sent by the PC is VXLAN-encapsulated at the non-gateway node and reaches the gateway node, the gateway node decapsulates the multicast data packet with VXLAN and finds that the destination MAC address of the multicast data packet is multicast MAC address, and the destination IP address ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L12/761H04L45/74H04L45/16
CPCH04L12/413H04L49/201H04L12/4641H04L45/16H04L49/25H04L2212/00
Inventor 张洋
Owner NEW H3C TECH CO LTD
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