Switch Sub-Chassis Blindmate Line-Card Service Without Cable Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current network switch maintenance requires disconnecting network cables for servicing, leading to human errors, system downtime, and unnecessary cable damage, which increases operational expenses and revenue loss.
Innovation Solution
The development of a switch sub-chassis system with modular, hot-swappable line-cards and integrated optical fiber connectivity allows for serviceable line-cards without disconnecting network cables, utilizing blindmate connectors for optical, liquid, and electrical connections directly to the enclosure midplane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If network cables are disconnected for switch servicing, then components can be repaired or replaced, but human errors occur, system downtime increases, and operational expenses rise
Solution Approach 1:
The network switch is divided into modular line-cards that can be independently removed and replaced. Each line-card contains specific network ports and processing functions, allowing selective maintenance of individual components without affecting the entire switch or requiring cable disconnection.
Solution Approach 2:
A cable management assembly with cable retainers acts as an intermediary between the network cables and the switch faceplate. The retainers hold cables in position and guide them during line-card removal, enabling hot-swapping without cable disconnection while preventing cable damage and operator errors.
2Ease of repair
If network cables are repeatedly disconnected and reconnected for maintenance, then switch components can be serviced, but human errors increase and cable damage occurs
Solution Approach 1:
Cable retainers are pre-installed on the cable management assembly in predetermined positions corresponding to specific line-card ports. This preliminary arrangement ensures that when line-cards are removed and reinstalled, cables automatically return to their correct positions, preventing connection errors and eliminating the need for manual cable reconfiguration.
Solution Approach 2:
The cable management system with positioned retainers enables the switch to service itself without external assistance. Operators can simply remove and reinstall line-cards while cables remain secured in place, allowing the system to maintain proper connections automatically without requiring operators to manually manage cable routing and positioning.
3Loss of substance
If network cables are left inactive after damage, then replacement is avoided, but space is wasted and infrastructure clutter increases
Solution Approach 1:
Instead of discarding damaged cables or leaving them inactive in bundles, the system recovers cable resources by maintaining all cables in an active, connected state. The modular line-card architecture allows any line-card to be replaced, effectively recovering the cable's functionality without physical cable replacement or disposal.
Data Source
AI summary
Switch sub-chassis systems and methods for rack-scale servers are disclosed. A switch sub-chassis is arranged for modular installation in an enclosure and includes structural support features that allow multiple hot-serviceable line-cards and an integrated high-density optical fiber connectivity within the sub-chassis. Various features of the switch sub-chassis and associated line-cards allow liquid-electro-optical blindmate of the line-cards so that the line-cards are serviceable, allow high-density and complex fiber shuffle assemblies support, and facilitate ease of installation and/or servicing of fiber assemblies.