RSVP-TE Protocol Extension for Automatic I-SID Configuration in GMPLS Networks
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Solution Overview
Problem
In GMPLS controlled Ethernet networks, there is currently no mechanism to provide Service Instance Identifier (I-SID) configurations, leading to operational complexity and potential misconfiguration in network management.
Innovation Solution
The Resource Reservation Protocol-Traffic Engineering (RSVP-TE) protocol is extended to automatically configure I-SIDs within Backbone Edge Bridges (BEBs) by identifying specific I-SIDs and carrying them in new TLVs or objects such as LSP_ATTRIBUTES or CALL_ATTRIBUTES, ensuring global uniqueness and reducing misconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual configuration of I-SID in each BEB is used, then network management flexibility is maintained, but operational complexity increases and misconfiguration risks arise
Solution Approach 1:
The patent introduces an intermediary mechanism (control plane protocol extension) that automatically distributes I-SID configurations from a centralized controller to distributed BEBs, eliminating manual configuration while maintaining network management flexibility through the control plane interface
2Ease of operation
If automatic I-SID configuration mechanism is implemented, then operational complexity is reduced and misconfiguration is prevented, but protocol complexity increases
Solution Approach 1:
The patent extends existing RSVP-TE protocol objects (LSP_ATTRIBUTES, CALL_ATTRIBUTES) to carry I-SID information, allowing a single protocol extension to serve multiple functions: automatic I-SID distribution, configuration synchronization, and collision prevention across the network
Solution Approach 2:
The BEBs automatically receive and configure I-SID values through the extended RSVP-TE signaling protocol without requiring manual intervention, with the system self-configuring I-SIDs based on service identification information carried in protocol messages
3Manufacturing precision
If I-SID configuration is automated through control plane, then configuration accuracy is improved, but control plane overhead increases
Solution Approach 1:
The patent merges I-SID configuration information with existing RSVP-TE signaling messages (LSP setup, path routing), combining multiple configuration tasks into a single protocol exchange to minimize control plane overhead while ensuring accurate I-SID distribution
Data Source
AI summary
A system and method of automatically configuring an Service Instance Identifier (I-SID) in a Generalized Multiprotocol Label Switching (GMPLS) controlled network. The method comprises identifying a specific I-SID for a specific service in the GMPLS controlled network. Next, the identified I-SID is automatically configured within a Backbone Edge Bridge (BEB) with a Resource Reservation Protocol-Traffic Engineering (RSVP-TE) extension. The automatic configuration may be implemented by several different embodiments. In one embodiment, the I-SID may be carried in a SESSION_ATTRIBUTE object. In another embodiment, the I-SID may be mapped to a Short Call ID field in a Session object. Alternatively, the I-SID may be carried in an Endpoint ID Type-Length-Value (TLV). The I-SID may also be carried in a new TLV in a LSP_ATTRIBUTES or CALL_ATTRIBUTES object.