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Method of realizing message forwarding and switch

A packet forwarding and switching technology, applied in the field of switches, can solve the problem that the number of routing entries cannot meet the actual demand, increase the number of switches, etc., and achieve the effect of improving the adaptability of the network

Active Publication Date: 2015-06-17
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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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, the first chip and the second chip. In the media access control (MAC, Media Access Control) table of the two chips Write 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 in the second chip is w...

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Abstract

Proposed are a method for realizing message forwarding and a switch. The method is applied to a switch. The switch comprises a first chip and a second chip which are cascaded. The method comprises: a first chip which has received a message from an ingress port judging that the message is required to be routed and forwarded according to a media access control (MAC) table and a target MAC address in the message; according to an Internet protocol address (IP address) in the message, the first chip looking for an egress port corresponding to the IP address in a routing table of the first chip; when the first chip does not find the egress port, the first chip forwarding the message to the second chip via a cascading port; according to the MAC table and the target MAC address in the message, the second chip judging that the message is required to be routed and forwarded; according to the IP address in the message, the second chip looking for the egress port corresponding to the IP address in a routing table of the second chip; and the second chip forwarding the message from the found egress port.

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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IPC IPC(8): H04L12/701H04L12/757H04L12/931
CPCH04L61/103H04L49/252H04L12/6418
Inventor 潘庭山
Owner ZTE CORP
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