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What is the difference between HLD & LLD Network Design?

In this article we shall discuss the difference between HLD and LLD? HLD and LLD are terms which are used extensively in...

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Difference between HLD & LLD

In this article we shall discuss the difference between HLD and LLD? HLD and LLD are terms which are used extensively in network design and networking world.

High Level Design

HLD stands for High Level Design and is designed at the beginning of network project. It provides a high-level view of overall system setup describing the relationship of various systems and functions which combine to provide the expected solution meeting the business needs. The purpose of this document is to provide required details to understand traffic flow across the network. It is also referred to as macro level design. It is created by solution architects and used by management and solutions team.

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Low Level Design

It stands for Low Level Design, LLD is designed to elaborate and provide in depth knowledge about High Level Diagram. LLD converts High Level Design into a detailed solution. It describes details about every component of the system. It is also referred to as micro level design. It is created by designers and used by network operations team and implementers.

Difference between HLD and LLD

S. NoHLDLLD
1HLD Short for High Level DesignLLD Short for Low Level Design
2Converts business requirements into high level solutionConverts high level solution to detailed solution
3Overall network design detailing relationship between various system modulesDesign depicting in depth information of HLD
4Contains information about Security zones, traffic flows, high level overview about various devicesContains details of IP addressing, Ports, VLANs, configurations etc
5also referred as macro level designalso referred as micro level design
6created by solutions architect and used by management / solutions teamcreated by designers and used by network operations team / implementors

In this article we have discussed the difference between HLD and LLD, I hope this has been informative for your and would like to thank you for viewing.

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