NVO3 Packet Decapsulation with Split-Horizon Attributes for E-Tree Simulation
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Solution Overview
Problem
The Network Virtualization Over Layer 3 (NVO3) technology cannot simulate the Ethernet Tree (E-Tree) service, which is characterized by specific communication constraints between user-side interfaces.
Innovation Solution
A message decapsulation and encapsulation method and device that utilize split horizon attributes such as leaf, root, or Ethernet Segment Identifier (ESI) attributes within data packets, carried in Geneve or VXLAN-GPE headers, to enable simulation of the E-Tree service by determining and carrying these attributes during packet transmission between nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If NVO3 technology uses standard Geneve or VXLAN-GPE encapsulation, then network virtualization and tenant traffic isolation are achieved, but the ability to simulate E-Tree service with split horizon attributes is lost
Solution Approach 1:
The patent embeds E-Tree split horizon attributes (leaf/root/ESI) within the existing NVO3 encapsulation header structure. The attributes are nested inside the Geneve or VXLAN-GPE header fields, allowing dual functionality: standard NVO3 virtualization and E-Tree service simulation simultaneously, without requiring separate encapsulation protocols
Solution Approach 2:
The patent modifies the NVO3 encapsulation header parameters by defining specific bit fields to represent E-Tree attributes. The 24-bit VNI space is extended or reinterpreted to include leaf attribute, root attribute, and ESI (Ethernet Segment Identifier) parameters, transforming the header structure to carry additional semantic meaning required for E-Tree simulation
2Ease of operation
If NVO3 technology allows full mesh communication between all user-side interfaces, then communication flexibility is improved, but E-Tree service constraints (leaf-to-leaf isolation) cannot be enforced
Solution Approach 1:
The patent implements a feedback mechanism where receiving nodes examine the E-Tree attributes embedded in incoming packet headers and automatically enforce split horizon rules. If a packet contains attributes indicating leaf-to-leaf communication, the receiving node discards the packet, thereby maintaining E-Tree service compliance through automated feedback control
Solution Approach 2:
The encapsulation header with E-Tree attributes acts as an intermediary that carries service policy information between network nodes. This intermediary structure enables core network devices to understand and enforce E-Tree constraints without requiring complex configuration or state tracking, as the attributes are explicitly carried in the packet itself
Data Source
AI summary
Provided is a message decapsulation method and device, a message encapsulation method and device, an electronic device, and a storage medium. The message decapsulation method includes: a data packet sent by a first node is decapsulated, and the data packet is obtained by encapsulating, by the first node, a data message sent through a first Attachment Circuit (AC). The data packet carries split horizon attributes of the first AC determined by the first node. The split horizon attributes of the first AC include at least one of the following: a leaf attribute, a root attribute, and an Ethernet Segment Identifier (ESI) attribute.