Transport Protocol Selection for Label Distribution in LSR Networks
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Solution Overview
Problem
Current communication systems in label switching networks face challenges in selecting an optimal transport protocol for supporting label distribution protocols, leading to inefficiencies in establishing and maintaining reliable connections between label switched routers.
Innovation Solution
The system includes a processor and memory configured to negotiate and select a transport protocol between label switched routers, using a type-length-value (TLV) format to communicate and prioritize available transport protocols, and establish a transport connection for label distribution protocol sessions, supporting multiple streams and feature sets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transport protocols are supported for label distribution protocol sessions, then adaptability and versatility are improved, but device complexity increases
Solution Approach 1:
The patent implements transport protocol selection by changing the parameter of protocol identification through Type-Length-Value (TLV) structures. Each TLV contains a transport protocol identifier field that explicitly specifies which transport protocol (TCP, SCTP, QUIC, TLS) should be used for the label distribution protocol session, eliminating the need for complex router configurations and enabling automatic protocol selection based on the identified parameter.
2Ease of operation
If transport protocol selection is automated based on router identifiers, then ease of operation is improved, but measurement precision requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-defining the transport protocol selection rule based on router identifier comparison before actual protocol negotiation occurs. The system automatically selects the transport protocol by comparing router identifiers (such as LDP identifiers or system IDs) and choosing the protocol indicated by the router with the lower identifier, eliminating the need for manual configuration and reducing operational complexity.
3Adaptability or versatility
If multiple streams are supported for different Forwarding Equivalence Classes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements segmentation by dividing the label distribution protocol sessions into multiple independent streams, where each stream corresponds to a specific Forwarding Equivalence Class (FEC). This segmentation allows different transport protocols to be used for different streams simultaneously, enabling independent management and optimization of each FEC without increasing overall system complexity, as each stream can be handled autonomously.
Data Source
AI summary
Various example embodiments for supporting selection of a transport protocol for use in supporting a label distribution protocol in a label switching network are presented. Various example embodiments for supporting selection of a transport protocol for use in supporting a label distribution protocol in a label switching network may be configured to support multiple transport protocol options for use in supporting use of the label distribution protocol between a pair of label switched routers in the label switching network. Various example embodiments for supporting selection of a transport protocol for use in supporting a label distribution protocol in a label switching network may be configured to use the selected transport protocol to support various aspects of the label distribution protocol (e.g., establishment of a label distribution protocol session based on the label distribution protocol, label distribution based on the label distribution protocol, and so forth).