Virtual circuit exchanging method based on MAC studying

A virtual circuit and virtual switch technology, which is applied in the switching field of the two-layer bearer network, can solve problems such as the shortage of VLAN IDs in the operation network, and achieve the effect of solving the shortage of VLAN IDs in the operation network and saving configuration

Inactive Publication Date: 2006-03-01
ZTE CORP
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a virtual circuit switching method based on MAC learning, withou

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  • Virtual circuit exchanging method based on MAC studying
  • Virtual circuit exchanging method based on MAC studying
  • Virtual circuit exchanging method based on MAC studying

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Embodiment Construction

[0050] The MAC learning-based virtual circuit switching method of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0051] Such as figure 1As shown, switch 4 has three ports: port A is connected to switch 1, port B is connected to switch 2, and port C is connected to switch 3. In addition, switch 4 has a port D connected to the switching network. There are three virtual circuits established, namely : Port A+VLAN ID1←---→Port D+VLAN ID4, B+VLAN ID2←---→Port D+VLAN ID4 and C+VLAN ID3←---→Port D+VLAN ID4, due to the connection with port D The VLAN IDs of the connected networks are tense, and only ID4 is assigned to the network connected to switch 4, resulting in the VLAN ID4 of port D corresponding to three VLAN IDs of ports A, B, and C. The present invention is to solve how to perform virtual circuit switching in this case.

[0052] For the convenience of illustration, suppose port A and VLAN ID is ID1 to switch port D ...

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Abstract

A method for exchanging virtual circuit based on MAC learning includes judging whether it is necessary to start up port MAC learning function or not , learning MAC when message is received , setting up mapping relation of entry port and its VLAN ID to exit port and its VLAN ID , setting up correlation of port and its VLAN ID to MAC if message learning MAC is received at entry port , retransmitting message according to said mapping relation for message not required to learn MAC at entry port , retransmitting message according to exit port and its VLAN ID confirmed by said correlation for message required to learn MAC .

Description

technical field [0001] The invention relates to the switching technology of the two-layer bearer network, in particular to a virtual circuit switching method based on MAC learning. Background technique [0002] In the Ethernet virtual circuit switching network, multiple virtual switches exchange packets through incoming ports and incoming VLANIDs, and establish virtual circuits between the source LAN and the destination LAN. [0003] At present, in the IEEE802.1Q standard, the length of a VLAN ID is only 12 bits, that is to say, the entire Layer 2 network can only support 4096 global VLANs, which is far from meeting the requirements of the operating network. [0004] Due to the complexity of MAN planning, the links between the source LAN and the destination LAN may have different VLAN IDs or the VLAN IDs are tense. [0005] While using the incoming port and incoming VLAN ID for packet exchange, the VLAN ID is also replaced. This method solves the problem that the VLAN ID of...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/50
CPCH04L49/354H04L12/4641H04L12/462
Inventor 龚超美叶志宁胡龙斌曲原钱小龙钟卫东李斌吴晨于伟贾皓昕
Owner ZTE CORP
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