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A method and switch for realizing packet forwarding

A technology of message forwarding and switching, applied in the field of switches, can solve the problem that the number of routing entries cannot meet the actual needs, increase switches and other problems, and achieve the effect of improving network adaptability

Active Publication Date: 2019-07-12
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] As the network's requirements for the number of routing entries are getting higher and higher, the number of routing entries in the above-mentioned dual-chip cascaded switches cannot meet the actual needs. If the network's requirements for the number of routing entries are to be met, the number of switches must be increased in the network

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  • A method and switch for realizing packet forwarding
  • A method and switch for realizing packet forwarding
  • A method and switch for realizing packet forwarding

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Embodiment Construction

[0028] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings, which cannot be used to limit the protection scope of the present invention.

[0029] see figure 1 , the present invention proposes a method for realizing message forwarding, which is applied to a switch. The switch includes two chips, namely a first chip and a second chip, which are written in the Media Access Control (MAC, Media Access Control) table of the two chips. Enter the same MAC entry, and identify the MAC address that needs to be routed and forwarded in the MAC table. How to identify whether routing and forwarding is required in the MAC table belongs to the prior art, and is not within the protection scope of the present invention.

[0030] The routing entry of the outgoing port in the first chip is written in the routing table of the first chip, and the routing entry of the outgoing port i...

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Abstract

The present invention proposes a method for realizing message forwarding and a switch, which is applied to a switch, and the switch includes a cascaded first chip and a second chip, and the method includes: the first chip receiving a message from an ingress The access control MAC table and the destination MAC address in the message determine that the message needs to be routed and forwarded; the first chip searches the routing table of the first chip for the IP address corresponding to the IP address according to the IP address in the message. output port; when the first chip cannot find the output port, the first chip forwards the message to the second chip through the cascade port; the second chip judges that the message needs Carry out route forwarding; the second chip searches the routing table of the second chip for the outgoing port corresponding to the IP address according to the IP address in the message; the second chip forwards the message from the found outgoing port. The invention can meet the requirement of the network on the number of routing entries.

Description

technical field [0001] The invention relates to switch technology, in particular to a method for realizing message forwarding and a switch. Background technique [0002] A switch is a network device used for electrical signal forwarding. It can provide an exclusive electrical signal path for any two network nodes connected to the switch. The most common switch is an Ethernet switch. In order to meet various flexible requirements of networking, current switches require that the number and types of ports of the switches are different. For example, some switches require 48 Gigabit ports and 4 10 Gigabit ports. However, there is no completely suitable switch chip to meet the functional requirements or the functions do not completely match, resulting in high cost of the switch. At present, in order to reduce costs, two chips with matching functions and low prices are usually cascaded to meet the functional requirements of the switch. [0003] For a switch that uses two chips fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/701H04L12/757H04L12/931
CPCH04L61/103H04L49/252H04L12/6418
Inventor 潘庭山
Owner ZTE CORP
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