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PVLAN switch and method of connecting the PVLAN switch to non-PVLAN apparatus

A switch and connection technology, applied in the field of computer networks, can solve the problems of inability to transmit information in multiple group VLANs, inability to communicate with ports, etc.

Active Publication Date: 2015-09-02
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it cannot communicate with ports in different community VLANs
[0009] 3) Isolated ports can only communicate with promiscuous ports
However, neither of these existing PVLAN aggregation ports can simultaneously transmit multiple community VLAN information from a PVLAN switch to a non-PVLAN device

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Embodiment Construction

[0026] Some preferred embodiments of the present disclosure are shown in the accompanying drawings and will be described in more detail below with reference to the accompanying drawings. However, the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0027] In order to solve the technical problems raised in the background art, the present invention defines an intelligent PVLAN aggregation port. This port can not only transmit the community VLAN information from the PVLAN switch to the non-PVLAN device, but also transmit the information of the isolated VLAN and the community VLAN to the non-PVLAN device. That is to say, the intelligent PVLAN aggregation port can only belong to multiple community VLANs, or can belong to multiple community V...

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Abstract

A PVLAN switch for connecting a PVLAN to a non-PVLAN device is configured as a primary VLAN with secondary VLANs, the primary VLAN includes promiscuous ports, each of the secondary VLANs includes a smart PVLAN trunk port, and the smart PVLAN trunk port is included in at least two secondary VLANs where the smart PVLAN trunk port and the promiscuous port connect to non-PVLAN devices. A frame is received on a smart PVLAN trunk port sent from a non-PVLAN device, and includes a destination address and a secondary VLAN ID. The PVLAN switch port ID for the first frame, and a primary VLAN ID for the secondary VLAN ID are identified. If the frame is a non-isolated port, the secondary VLAN ID is modified to be the primary VLAN ID, and the modified frame is sent to another non-PVLAN device connected to the PVLAN switch port.

Description

technical field [0001] The present invention relates to computer networks, in particular to a private virtual local area network (PVLAN), and more particularly to a PVLAN switch and a method for connecting it to a non-PVLAN device. Background technique [0002] As is well known in the field of computer networking, a single layer two network, or L2 network, can be partitioned to create multiple distinct broadcast domains that are isolated from each other so that data frames can only pass through one or more routers passed between them. Such a domain is called a Virtual Local Area Network (VLAN). Currently the most commonly used protocol for configuring VLANs is IEEE802.1Q. According to this protocol, each Ethernet frame is added with a VLAN tag (tag), which contains the ID of the VLAN to which the frame belongs. Devices such as switches can determine the VLAN to which the frame belongs according to the VLAN ID. [0003] PVLAN is a VLAN-based computer networking technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/931H04L12/46H04L45/74
CPCH04L12/4645H04L12/4641H04L45/74H04L49/70
Inventor 朱正东唐刚朱以静何国星
Owner IBM CORP