MPLS VPN(Multi-Protocol Label Switching Virtual Private Network) is facing a big obstacle that some High-end users worry about their security when using MPLS VPN. A designation idea that can guarantee the safety of MPLS VPN used in some higher presence occasions with some potential safety problems is introduced. IPsec agreement is used to encrypt IP packet in the customer route and encapsulate the data in the MPLS edge router.This method can solve some problems when the information is transmitted in the second layer of the public backbone network with single MPLS VPN such as the information can not be automatically cncrypted,some mistakes appear in the
transmission,the leaking of information caused by continuous
interruptions.Experimental results show that this method improved the network security coefficient under the premise of no increase in the cost of the network.
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