Virtual Bridging Logic for Redundant Router Isolation
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Solution Overview
Problem
Geographically distributed data centers face challenges in maintaining efficient communication and preventing redundant routers from interfering across different domains, leading to potential delays and bandwidth inefficiencies.
Innovation Solution
Implementing an apparatus with virtual bridging logic that couples local and shared domains, employing protocols like HSRP and VRRP, and providing a proxy service to filter and modify packets, ensuring routers using redundant protocols operate locally and avoid cross-domain interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant routers are deployed across geographically distributed data centers in a shared domain, then mutual backup and disaster recovery capability is improved, but unnecessary cross-domain traffic and bandwidth consumption increase
Solution Approach 1:
The patent segments the shared domain into multiple local domains, each with its own gateway. Redundant routers are confined to their respective local domains, preventing cross-domain traffic while maintaining backup capability within each segment. This segmentation resolves the contradiction by allowing reliability through local redundancy while avoiding bandwidth waste through domain isolation.
Solution Approach 2:
The patent implements local quality by making each local domain self-sufficient with its own redundant router pair. Each domain independently handles its routing protocols and backup operations without interfering with other domains. This localizes the redundancy function, improving reliability within each domain while preventing unnecessary cross-domain traffic.
2Adaptability or versatility
If redundant routers from different local domains can associate with each other in a shared domain, then routing flexibility is improved, but protocol interference and operational complexity increase
Solution Approach 1:
By dividing the shared domain into isolated local domains, the patent prevents routers from different domains from associating with each other. Each local domain operates independently with its own gateway, eliminating protocol interference while maintaining sufficient routing flexibility within each domain through local redundancy.
Solution Approach 2:
The patent introduces virtual bridging logic as an intermediary between local domains. This intermediary selectively filters and blocks redundant routing protocol packets from crossing domain boundaries, preventing protocol interference while allowing necessary traffic flow. The virtual bridging logic acts as a mediator that maintains routing flexibility without introducing complexity from cross-domain protocol associations.
3Reliability
If virtual bridging logic filters and blocks redundant routing protocol packets, then cross-domain interference is prevented, but network traffic overhead increases
Solution Approach 1:
The patent implements preliminary action by configuring virtual bridging logic in advance to recognize and block specific redundant routing protocol packets. Rather than processing all packets and making decisions in real-time, the system is pre-configured with knowledge of which packets to filter, reducing processing overhead and time loss while maintaining effective isolation.
Data Source
AI summary
In an example embodiment, an apparatus with a first interface coupled to a local domain with routers that employ a redundant router protocol, such as Hot Standby Router Protocol (HSRP) and/or Virtual Router Redundancy Protocol (VRRP), and a second interface coupled with a shared domain, such as Virtual Private LAN (Local Area Network) Service (VPLS), and virtual bridging logic coupled with the first and second interfaces. The virtual bridging logic performs packet snooping, filtering and/or provides a proxy service so that the routers employing the redundant router protocol are localized in the local domain, and avoids the routers employing the redundant router protocol from associating with other routers employing the redundant routing protocol that are in another local domain coupled with the shared domain.