Unlock instant, AI-driven research and patent intelligence for your innovation.

Multiplexing method for VLAN switching tunnel and VLAN commutative field

A tunnel and tunnel identification technology, applied in the field of Ethernet, can solve the problems of low utilization rate of VS tunnels, achieve the effects of alleviating scalability problems, reducing operation and maintenance costs, and reducing costs

Inactive Publication Date: 2008-04-02
HUAWEI TECH CO LTD
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] The present invention provides a method for multiplexing VS tunnels and a VLAN switching domain to solve the problem of low utilization of VS tunnels in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multiplexing method for VLAN switching tunnel and VLAN commutative field
  • Multiplexing method for VLAN switching tunnel and VLAN commutative field
  • Multiplexing method for VLAN switching tunnel and VLAN commutative field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Embodiment 1: Encapsulate the VS tunnel Ethernet frame using the QinQ Ethernet frame defined by IEEE 802.1ad: Referring to FIG. exchange, and the inner C-TAG is used as a VC label to identify the VC carried on the VS tunnel. In this case, the length of the virtual channel identifier (VCI) is equal to the length of one VID, that is, 12 bits.

[0089] Since the Ethernet frame encapsulation of QinQ has been generally accepted, the first embodiment has a wide application basis.

Embodiment 2

[0090] Embodiment 2: Use 802.1ah Ethernet frame encapsulation VS tunnel Ethernet frame:

[0091] Referring to Figure 7, the Ethernet frame of the VS tunnel adopts the Ethernet frame encapsulation defined by IEEE 802.1ah, and the backbone VLAN tag (Backbone VLAN TAG, B-TAG) in the 802.1ah Ethernet frame encapsulation is used as the VS tag for the exchange of the VS tunnel. The service example The label (Service Instance TAG, I-TAG) is used as the VC label. In this case, the length of the VCI is equal to the length of a Service Instance ID (Service Instance ID, I-SID), which is 24 bits.

[0092] Therefore, the address space of the VC in the second embodiment is very sufficient.

Embodiment 3

[0093] Embodiment three: use the V-TAG / S-TAG in the Ethernet frame header as the VS label, and use the MPLS label as the VC label for encapsulation:

[0094] Referring to Figure 8, the VS tunnel uses the V-TAG in the Ethernet frame structure defined by IEEE802.1q or the S-TAG in the QinQ Ethernet frame defined by IEEE802.1ad as the VS label, and uses the MPLS Label as the VC label. In this case, the length of the VCI is equal to the length of the MPLS Label, which is 20 bits.

[0095] Adopting embodiment three has the following advantages:

[0096] a. The encapsulation based on Ethernet and MPLS is very mature;

[0097] b. The length of the MPLS label makes the address space of the VC very sufficient;

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multiplexing method of VLAN exchange tunnel, comprising: an edge entry node of VS tunnel mapping the received subscriber data unit to a virtual channel VC loaded by VS tunnel to package into VS tunnel ether frame containing VS label, VC label and subscriber data unit. An intermediate node of VS tunnel exchanges VS tunnel ether frame based on VS label and the said subscriber data unit and the said VC label are transparently transmitted at the said VS tunnel. The edge entry node of VS tunnel ends the VS tunnel and VC. The said subscriber data unit is recovered and the data is transmitted based on the VC label. The invention also discloses a corresponding VS area. The said invention can implement multiplexing the VS tunnel, and the availability of VS tunnel is increased.

Description

technical field [0001] The present invention relates to Ethernet (Ethernet) technology, in particular to a VLAN switching (VLAN Switching, VS) tunnel multiplexing method and VLAN switching domain. Background technique [0002] Due to its simplicity, good openness, significant cost advantages, universal application, and wide recognition, Ethernet technology has become one of the main technologies for future metropolitan area network construction. It is widely used in all levels of broadband metropolitan area networks Expanded a wealth of applications. [0003] At the same time, the industry also clearly realizes that in order for Ethernet technology to become a carrier-grade Ethernet technology (CarrierEthemet, CE), technological breakthroughs and improvements are needed in many aspects. The MetroEthemet Forum (MEF) has made a comprehensive report on this To sum up, it is believed that CE needs to solve five problems: Scalability, Reliability, Hard QoS, TDM Support, and Serv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/56H04L29/06
CPCH04L12/4658H04L12/4633H04L12/4662H04L12/4654
Inventor 范灵源
Owner HUAWEI TECH CO LTD