Method for realizing identical subnet communication for MPLS three-layer virtual special net

A three-layer virtual and private network technology, applied in the direction of network interconnection, data exchange through path configuration, electrical components, etc., can solve the problems of difficult deployment, increased network load, and different standards, and achieve simple deployment and low network load. small effect
CN101072238AInactive Publication Date: 2007-11-14ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2007-11-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The method includes following steps: (1) first consumer equipment CE1 sends ARP proxy request with destination address being as IP address of second consumer equipment CE2 to the connected first provider equipment PE1; (2) through sending ARP responses, PE1 informs CE1 the MAC address of interface hardware connected to CE1; (3) looking up label forwarding table, through static route setup by PE1 in advance, and MPLS three layers virtual private network L3VPN, CE1 forwards data packet sent by CE1 to second provider equipment PE2; (4) PE2 sends data packet sent from PE1 to CE2. The invention realizes intercommunication among VPN consumers in same IP sub network distributed at different sites in MPLS L3VPN network.
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Description

technical field

[0001] The invention relates to the technical field of computer network communication, in particular to a method for realizing communication on the same subnet in a multi-protocol label switching (Multi-Protocol Label Switching, MPLS) three-layer virtual private network (L3VPN). Background technique

[0002] Multi-Protocol Label Switching (MPLS) technology has become one of the mainstream technologies of IP (Internet Protocol) bearer network. The IP bearer network realizes the isolation of multi-service and multi-user in the IP bearer network through the use of MPLS-related technologies, such as MPLS VPN technology. MPLS VPN involves MPLS L3VPN (three-layer virtual private network) and MPLS L2VPN (two-layer virtual private network), etc. , where MPLS L3VPN technology has been deployed in large quantities in operator networks. Typical MPLS L3VPN technology is Border Gateway Protocol (BGP) / MPLS L3VPN defined in RFC2547. BGP / MPLS L3VPN refers to operator edge (P...

Claims

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