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Address resolution protocol message agent method and device

An address resolution protocol and message technology, applied in data exchange through path configuration, electrical components, transmission systems, etc., can solve problems such as learning, differences in distributed gateway processing capabilities, and EVPN network data message forwarding failures

Active Publication Date: 2021-02-23
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the number of access users of different distributed gateways is different and the processing capabilities of each distributed gateway are different, resulting in a large difference in the processing capabilities of ARP (Address Resolution Protocol, Address Resolution Protocol) between different distributed gateways
When the ARP entry of one of the distributed gateways reaches the maximum size, it cannot learn the ARP entry and respond to the ARP packet requesting the MAC (Media Access Control) address of the gateway, nor can it respond to the Layer 3 forwarded Ethernet The destination IP (Internet Protocol, Internet Protocol) address of the network data packet sends an ARP request packet to learn the ARP entry, which causes the forwarding of the data packet of the EVPN network user to fail.

Method used

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  • Address resolution protocol message agent method and device
  • Address resolution protocol message agent method and device
  • Address resolution protocol message agent method and device

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] figure 2 Shown is the flowchart of the address resolution protocol message proxy method provided by the embodiment of the present invention, the method is applied to the proxy distributed gateway of the Ethernet virtual private network, such as figure 2 The method shown includes:

[0020] S201. Receive an address resolution protocol ARP request packet.

[0021] S202. Determine that the number of stored ARP entries has reached a threshold.

[0022] ...

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Abstract

The present invention provides an address resolution protocol message proxy method and device, wherein the method applied to a proxy distributed gateway of an Ethernet virtual private network includes: receiving an address resolution protocol ARP request message; determining the number of stored ARP entries The threshold has been reached; the VxLAN-encapsulated ARP proxy request message is broadcast based on the VxLAN tunnel connected to each other distributed gateway in the virtual forwarding instance; the VxLAN-encapsulated ARP proxy response message received through the VxLAN tunnel connected to the proxy distributed gateway is received ; Encapsulate an ARP request message based on the VxLAN tunnel connected to the proxy distributed gateway, and set a proxy identifier, and send the VxLAN encapsulated ARP request message with the proxy identifier through the VxLAN tunnel connected to the proxy distributed gateway.

Description

technical field [0001] The invention relates to the technical field of computer communication, in particular to an address resolution protocol message agent method and device. Background technique [0002] The forwarding data plane of EVPN (Ethernet Virtual Private Network, Ethernet Virtual Private Network) uses VxLAN (Virtual Extensible Local Area Network, Virtual Extensible Local Area Network) encapsulation to forward data packets, and provides three layer interconnection. [0003] Such as figure 1 As shown, when EVPN adopts the distributed gateway architecture, each VTEP (VxLAN Tunnel End Point, VxLAN tunnel end point) device can be used as an EVPN gateway to forward the traffic of the local site at Layer 3. [0004] However, different distributed gateways have different numbers of access users and different processing capabilities of each distributed gateway, resulting in large differences in ARP (Address Resolution Protocol, Address Resolution Protocol) processing cap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12H04L12/46
Inventor 聂明顺郑国良
Owner NEW H3C TECH CO LTD