vDCBX Protocol for Virtual Switch Topology Discovery
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Solution Overview
Problem
Conventional data center bridging protocols, such as LLDP, are inadequate for establishing configuration in virtualized Ethernet networks, particularly in multi-hop environments and fail to detect configuration errors between virtual switches, limiting their ability to support virtual fabrics and virtual components.
Innovation Solution
A system and method that assigns VLAN types, generates VLAN list type-length-value (vTLV) messages, and transmits information to resources including virtual and physical switches, ports, and fibre channel forwarders, enabling the discovery of resources and establishing the scope and topology of virtualized network architectures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional DCBX protocols (LLDP) are used to establish configuration, then configuration exchange between physical components is achieved, but virtual fabrics and multi-hop environments are not supported and configuration errors between virtual switches cannot be detected
Solution Approach 1:
The patent introduces an intermediary mechanism (virtual switch with enhanced DCBX capabilities) that mediates between physical network components and virtual network functions. This intermediary enables configuration exchange and error detection in virtualized environments by translating and forwarding DCBX messages through virtual fabric infrastructure, resolving the contradiction between maintaining protocol simplicity and achieving virtual fabric support.
Solution Approach 2:
The patent segments the network architecture into distinct virtual and physical layers, allowing DCBX protocol operations to be independently managed at each layer. Virtual switches are segmented as separate entities that can generate and process DCBX messages independently, enabling multi-hop environments and virtual fabric support while maintaining reliable configuration error detection within each segment.
2Adaptability or versatility
If virtualization technologies are introduced to virtualize Ethernet connections, then cloud computing and software-defined networks are enabled, but unique challenges arise that prohibit the use of conventional DCBX protocols
Solution Approach 1:
The patent implements a universal DCBX message format and processing mechanism that functions across both physical and virtual network components. The enhanced virtual switch can handle conventional DCBX messages from physical devices while simultaneously managing configuration exchange between virtual components, achieving multi-functionality that resolves the complexity challenge of virtualized Ethernet connections.
3Loss of information
If conventional LLDP protocol is used, then information exchange between pairs of components is achieved, but the scope and topology of virtualized architectures cannot be established
Solution Approach 1:
The patent implements feedback mechanisms where virtual switches generate and process DCBX messages to continuously discover and update information about network topology and component scope. The feedback loop enables virtual switches to learn about connected components, virtual fabrics, and multi-hop paths, establishing complete topological awareness without increasing operational complexity.
Data Source
AI summary
In one embodiment, a system includes processor; and logic integrated with and/or executable by the processor, the logic being adapted to: assign a VLAN type to each of a plurality of VLANs of an architecture; generate a VLAN list type-length-value (vTLV) message; and transmit information to resources based at least in part on the vTLV message, wherein the resources comprise at least one virtual switch and one or more of: at least one physical switch; at least one virtual port; at least one physical port; at least one virtual machine; at least one converged network adapter (CNA); and at least one fiber channel forwarder (FCF).