Network Appliance Software Provisioning via PXE Boot
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Solution Overview
Problem
The manual installation and updating of network appliance software is time-consuming and often requires service downtime, as it involves creating an OS distribution, initializing a hard disk, and duplicating disks, which can be inefficient and disruptive.
Innovation Solution
Implementing the Preboot Execution Environment (PXE) protocol allows network devices to remotely boot and download software distributions from a server, enabling simultaneous installation and updating of network appliances across the network, utilizing partitioned hard disks for active and inactive software and data partitions to manage updates without downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual software installation is performed on each network device, then software can be installed, but the process is time-consuming and labor-intensive
Solution Approach 1:
The patent uses PXE protocol to create network bootable images that can be copied to multiple network devices simultaneously. The software distribution is packaged as a bootable image that can be deployed across the network without manual intervention on each device, enabling parallel installation and significantly reducing total installation time.
Solution Approach 2:
The patent replaces manual mechanical installation processes with automated network-based software delivery. Instead of physically installing software on each device manually, the system uses network protocols (PXE) to automatically download and install software images, substituting manual operations with automated electronic processes.
2Reliability
If manual software updates are performed on network appliances, then software can be updated, but service downtime is required
Solution Approach 1:
The patent implements a staging area mechanism where software updates are prepared and validated in advance before being deployed to production systems. The PXE protocol enables the system to boot from network storage, allowing updates to be staged and applied without requiring devices to be offline, thus maintaining service continuity during the update process.
Solution Approach 2:
The patent introduces a network-based intermediary system (PXE server and staging area) that mediates between the software update source and the network appliances. This intermediary enables updates to be delivered and applied in a controlled manner that doesn't require taking the appliances offline, allowing continuous service operation during updates.
3Ease of manufacture
If disk duplication is performed for software installation, then software can be installed, but the process is complex and time-consuming
Solution Approach 1:
The patent replaces complex disk duplication operations with network-based image copying using PXE protocol. Instead of physically duplicating disks or performing complex partitioning operations manually, the system creates bootable images that can be networked to multiple devices, simplifying the installation process and reducing time requirements.
Solution Approach 2:
The patent creates a universal PXE bootable image that can be deployed across multiple network devices with different configurations. This single universal image serves multiple functions: installation, updates, and deployment across heterogeneous network appliances, eliminating the need for device-specific installation procedures.
Data Source
AI summary
Installing software on a network appliance having a short term memory and a hard disk is disclosed. Installing includes receiving an image of the software, loading the image into a short term memory on the network appliance, and writing the image to a hard disk on the network appliance. Updating software and data on a network appliance having a hard disk is disclosed. Updating includes writing a new version of software to an inactive software partition of the hard disk, writing an old version of data to an inactive data partition of the hard disk, activating the inactive software partition, and migrating the old version of data to a new version of data.