PIM Join Packet Slicing for Multicast Path Selection
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Solution Overview
Problem
The challenge of implementing multicast forwarding slicing technology in Protocol Independent Multicast (PIM) networks has not been adequately addressed, limiting the flexibility and efficiency of network resource utilization in network slicing scenarios.
Innovation Solution
The solution involves adding network slice information and/or network topology information to PIM join packets to designate a specific network slice or topology for multicast tree joining, utilizing flexible algorithm (Flex-Algo) attributes to guide unicast routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multicast transmission is implemented in network slicing, then network resource utilization efficiency is improved, but the complexity of network configuration and management increases
Solution Approach 1:
The patent embeds network slice identification information and topology identification information directly within the PIM join packet structure. This nesting approach allows multicast routing information to carry slice-specific identifiers without requiring separate configuration systems, thereby improving resource utilization while managing complexity through integrated packet design
Solution Approach 2:
The patent segments the network into distinct slices with unique identifiers that are carried in the PIM join packets. This segmentation allows independent management of different network slices while maintaining standardized multicast protocols, resolving the contradiction between improved resource utilization and increased configuration complexity
2Measurement precision
If network slice information is added to PIM join packets, then multicast forwarding accuracy in specific slices is improved, but the packet size and processing overhead increase
Solution Approach 1:
The patent uses flexible algorithm (Flex-Algo) attributes as thin information layers within the PIM join packet structure. These attributes carry network slice and topology identification information with minimal overhead, achieving precise multicast forwarding accuracy while maintaining compact packet sizes through efficient information encoding
3Productivity
If Flex-Algo attributes are used to guide unicast routing, then path selection optimization is improved, but the routing protocol complexity increases
Solution Approach 1:
The patent extends the existing Flex-Algo mechanism to serve multiple functions: it guides unicast routing for multicast tree construction while simultaneously carrying network slice identification and topology identification information. This multi-functionality approach optimizes path selection without requiring separate protocols, thereby managing routing protocol complexity
Data Source
AI summary
Embodiments of the present application provide a packet generation method, a multicast packet transmission method, a network device, a computer readable storage medium, and a computer program product. The packet generation method is applied to a multicast network. The method comprises: adding at least one piece of the following information into a protocol independent multicast (PIM) join packet: network slice information; and network topology information.