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
CN1741499AInactive Publication Date: 2006-03-01ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZTE CORP
Publication Date
2006-03-01
Estimated Expiration
Not applicable · inactive patent

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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 .
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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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