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Method and switch for transmitting packet and establishing media access control address table

A technology for media access control and message forwarding, which is applied in the field of virtual local area network and can solve the problem of wasting entry resources

Active Publication Date: 2009-09-23
HEWLETT-PACKARD ENTERPRISE DEV LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, a large number of MAC address entries will be established in the switch, which greatly wastes the table entry resources in the switch.

Method used

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  • Method and switch for transmitting packet and establishing media access control address table
  • Method and switch for transmitting packet and establishing media access control address table
  • Method and switch for transmitting packet and establishing media access control address table

Examples

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Embodiment Construction

[0053] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0054] In the prior art, after a switch learns a MAC address from an access port, it will not only create the MAC address table corresponding to the Secondary VLAN, but also create the MAC address table corresponding to the Primary VLAN. item. It can be seen from the message forwarding process on the switch that if only one access port connected to a fixed user terminal is set in a Secondary VLAN, that is to say, there is only one access port and one uplink port in each Secondary VLAN, Then, the MAC address table entry corresponding to the Secondary VLAN established according to the MAC address learned from the access port will not be used at all in the packet forwarding process, that is to say, the MAC address table entry for the switch ...

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PUM

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Abstract

The invention discloses a method for forwarding a message, a method for establishing a medium access control (MAC) address entry, and a switch. In the present invention, after the switch determines that the first MAC address has been learned on the access port for the first time, only an entry corresponding to the first MAC address of the primary virtual local area network (Primary VLAN) is established; and the switch first learns the first MAC address on the uplink port. After obtaining the second MAC address, establish entries corresponding to the second MAC addresses of the Primary VLAN and each secondary virtual local area network (Secondary VLAN); the switch forwards the message according to the established MAC address entries. The switch in the present invention includes a MAC address learning unit, a detection unit and a table item establishment unit. The invention greatly reduces the MAC address table items established in the switch, and saves table item resources of the switch.

Description

technical field [0001] The invention relates to virtual local area network technology, in particular to a method for forwarding messages, a method for establishing medium access control (MAC) address table items and a switch. Background technique [0002] The isolate-user-vlan technology is a Layer 2 virtual local area network (VLAN) technology applied to switches. like figure 1 As shown, when applying the isolate-user-vlan technology on the switch, it is necessary to divide a primary virtual local area network (Primary VLAN) and multiple secondary virtual local area networks (Secondary VLAN) on the switch, and each Secondary VLAN includes at least one An access port connected to a fixed user terminal, all Secondary VLANs share an uplink port, which is also connected to a fixed network device. The primary VLAN includes all access ports and uplink ports included in the secondary VLAN. After applying the isolate-user-vlan technology on the switch, for the upper layer equipm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/46H04L12/04H04L45/74
Inventor 王峰李达
Owner HEWLETT-PACKARD ENTERPRISE DEV LP
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