A method for realizing hierarchical VLAN

A virtual private, local area network technology, applied in the field of layered virtual private local area network services, can solve the problem of unresolved replication, occupying a lot of inter-domain path bandwidth, etc., to reduce waste, improve utilization, and improve message forwarding efficiency Effect

Inactive Publication Date: 2010-09-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the H-VPLS solution of Kompella VPLS only solves the problem of full mesh of a large number of PEs and limits the distribution of unnecessary routing information. Problem: Each PE needs to maintain almost all PWs, and unknown unicast packets need to be copied to all local CE interfaces and PW interfaces;
[0012] When the VPN Site spans different autonomous systems (AS, Autonomous System), the network-wide broadcast packets in one AS need to be sent to other ASs through each PW belonging to this VPLS instance, and these PWs may all be mapped to the same On one physical link, a large number of "duplicate" messages are transmitted between ASs, occupying a lot of inter-domain path bandwidth, that is to say, there will be multiple virtual links between communicating autonomous systems, resulting in repeated messages. Text sent multiple times between autonomous systems

Method used

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  • A method for realizing hierarchical VLAN
  • A method for realizing hierarchical VLAN
  • A method for realizing hierarchical VLAN

Examples

Experimental program
Comparison scheme
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no. 1 example

[0038] Referring to Fig. 4, the first embodiment of the method of the present invention includes:

[0039] D1) Division;

[0040] Wherein, the VPLS network is divided into autonomous systems (AS, Autonomous System).

[0041] D2) establish a network connection;

[0042] Among them, a network connection is established between PEs in each autonomous system.

[0043] D3) Establish virtual links within the autonomous system and between autonomous systems;

[0044] Among them, a virtual link between PEs is established for each VPLS instance in the autonomous system, and a virtual link is established for each VPLS instance between communicating autonomous systems.

[0045] D4) to communicate.

[0046] Wherein, CE uses the established virtual link to communicate.

no. 2 example

[0047] Referring to Fig. 5, the second embodiment of the method of the present invention includes:

[0048] In step D3) in the first embodiment of the method of the present invention, the establishment of a virtual link between the autonomous systems includes the following steps:

[0049] P1) Create network layer reachability information;

[0050] Wherein, the first Autonomous System Border Router (ASBR, Autonomous System Border Router) creates network layer reachability information.

[0051] Wherein, the second ASBR creates network layer reachability information.

[0052] P2) assign label blocks;

[0053] Wherein, the first ASBR allocates label blocks according to the created network layer reachability information.

[0054] Wherein, the second ASBR allocates label blocks according to the created network layer reachability information.

[0055] P3) send;

[0056] Wherein, the first ASBR sends the network layer reachability information and the label block to the second ASB...

no. 3 example

[0079] Referring to Fig. 6, the third embodiment of the method of the present invention includes:

[0080] S1) Division;

[0081] Among them, the VPLS network is divided into autonomous systems.

[0082] S2) establishing a network connection;

[0083] Among them, a network connection is established between PEs in each autonomous system.

[0084] S3) establishing an internal virtual link;

[0085] Wherein, a virtual link between PEs is established for each VPLS instance in the autonomous system.

[0086] S4) creating network layer reachability information;

[0087] S5) assign label blocks;

[0088] S6) send;

[0089] Wherein, the network layer reachability information and the label block are sent to the second ASBR.

[0090] S7) select label block;

[0091] Wherein, the second ASBR selects the corresponding label block as an MPLS label for sending data to the first ASBR.

[0092] S8) receiving routing information;

[0093] Wherein, the ASBR receives routing informatio...

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Abstract

The invention discloses a method of realizing layered virtual private LAN service, which is used to reduce the resources waste and improve bandwidth operating factor in message transmission course. The method of realizing layered virtual private LAN service includes the following steps: the virtual private LAN service network is divided according to autonomous system; a network connection is established among the service provider edge routers inside all autonomous systems and a virtual chain is established among the service provider edge routers for each virtual private LAN service embodiment; a virtual chain is established among autonomous system in communication for each virtual private LAN service embodiment; user edge router utilizes the established virtual chain for communication. The invention can effectively improve router distribution efficiency.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for realizing layered virtual private local area network services. Background technique [0002] With the continuous development of IP networks, rich, secure, and flexible network services have become an important way for operators to improve their profitability. At present, the internal networks of many enterprises are getting bigger and bigger, and the areas they cover are getting wider and wider; they may be distributed in different urban areas of a city, or in different cities, or even all over the world; If the network at the location is connected, the network operator is required to provide the network connection, because it is impossible for an enterprise to build such a huge network by itself. [0003] For a long time in the past, enterprises leased dedicated lines from telecom operators to complete the connection between various networks. These methods have problems s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46
CPCH04L12/4641
Inventor 陈国义
Owner HUAWEI TECH CO LTD
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