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Glite Dictionary
🛏️ To add a layer 🛏️ A soft layer 🌐 Physical network
underlay

underlay

7.9
The real network of cables and machines that carries data for virtual networks
  • noun
  • Specialized
translation icon : infraestructura subyacente
  • The network's underlay consists of routers and switches that connect all devices securely.

Examples

  • Technicians worked on the underlay to ensure that the virtual network could transmit data effectively.

  • Each underlay in our data center is vital for maintaining connection integrity across various systems.

  • The third job was to get the underlay for the walls in place and finally we could install the windows.

Synonyms

sublayer
vsunderlay
1 5.1

A thin part under another surface, for example under paint or soil

is the lower-level networking infrastructure beneath virtual overlay systems
underthing
vsunderlay
1 8.2

A padded layer placed under something to protect it

is the network's physical connectivity and devices rather than material padding
underlayer
vsunderlay
4.2

A material placed under something else to protect or support it

is the specific physical network infrastructure supporting virtual networks

How Low-Level

underlay
  • Specialized
7.9
infrastructure
487 3.8
logical topology
  • Specialized
6.1
network architecture
  • Specialized
1 3.9
overlay
  • Specialized
3 6.1

Surface Forms

underlay singular
underlays plural

Morphology

underlay = lay (semi-transparent) = under + lay

The components signal something that 'lies beneath', but the specialized networking sense (physical infrastructure underlying virtual overlays) is a metaphorical extension that requires domain knowledge.

Etymology

Underlay in networking follows the same idea: under + lay meaning 'beneath', and it names the real cables and machines that sit under virtual networks. That's why the underlay is the base that supports and carries the network traffic.