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Network trouble switching method

A technology for network faults and faults, which is applied in the direction of network interconnection, data exchange network, data exchange through path configuration, etc., can solve the problems of existing technologies that cannot be realized, do not meet, and take a long time, so as to achieve device independence, good compatible effect

Active Publication Date: 2010-05-12
MAIPU COMM TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

According to common route convergence processing this kind of switching, on the one hand, the time is too long, generally does not meet the user's SLA (Service Level Agreement, Service Level Agreement) requirements; on the other hand, if the local PE equipment and the remote PE equipment Provided, then as the manufacturer of the local PE equipment, it must provide a mechanism to ensure that the above-mentioned can be completed in a relatively short period of time without considering whether it is compatible with other remote PE equipment (that is, equipment independence). The entire switching process, which cannot be achieved by existing technologies

Method used

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Embodiment

[0038] see figure 2 , the first CE device CE1 establishes an IPSec tunnel with the two local PE devices PE1 and PE2 respectively through the Internet. The two local PE devices are connected to a remote PE device PE3, and the MP-BGP routing protocol is run between them. CE1 needs to communicate with CE2.

[0039] After CE1 establishes IPSec tunnels with the two local PEs PE1 and PE2, both local PEs are in the slave state by default. Assuming that CE1 selects PE1 as the MPE, it will send a state switching message to PE1; after receiving this message, PE1 sets itself as the "main state". PE1 realizes the switching from "slave state" to "master state".

[0040] The data sent from CE1 to CE2 uses the IPSec tunnel connecting CE1 and PE1 to reach the VRF of PE1, and then PE1 labels the data and forwards it to the MPLS network. The IPSec tunnel will generate a static route to CE1 in both PE1 and PE1's VRF. Because PE1 is in the "main state", it will send this route to the remote ...

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Abstract

A method for switching over fault of network includes linking IPSec tunnel detection technique and VPN tunnel detection technique with BGP route notification for realizing constrained notification ofBGP route, utilizing local-preference attribute of BGP route to realize route control on far-end PE device for making local-end PE device and far-end PE device be compatible with each other well so asto realize independence of device.

Description

technical field [0001] The invention relates to an MPLS (Multiprotocol Label Switch, multi-protocol label switching) network failure switching method, in particular to a switching method for IPSec access MPLS network failure. Background technique [0002] With the rapid development of the Internet, almost all major industries and enterprise users have the requirement to establish their own private network. If each such private network has to be built by itself, the high network construction cost cannot be afforded by every demander, and it is not conducive to the effective use of network resources. In this way, the demand of users to access the private network by utilizing the ubiquitous public network continues to increase. Among the private networks provided by operators for users, MPLS virtual private network VPN (Virtual Private Network) is popular for its flexibility and high efficiency. Among various MPLS VPN access schemes, IPSec technology is favored by people beca...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/46H04L12/56H04L29/06H04L45/50
Inventor 刘高锦魏华杜勇黄居贵
Owner MAIPU COMM TECH CO LTD