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Software Engineering vocabulary · Release and Maintenance

Subnet

Meaning in software engineering, with examples

/ˈsʌbnɛt/nounCommon term

In software engineering, subnet means: A smaller range of IP addresses inside a larger network such as a VPC, used to group resources and control which of them can reach the internet.

In Turkish: alt ağ, subnet

How it is used

Teams talk about public subnets (with a route to the internet, for load balancers) and private subnets (no direct internet access, for databases). Subnets are written in CIDR notation, such as 10.0.1.0/24.

Example sentences

  1. Put the application servers in the private subnet and only the load balancer in the public one.

  2. We ran out of IP addresses because the subnet was only a /26.

Common collocations

  • public subnet
  • private subnet
  • subnet mask
  • CIDR range
  • VPCShort for virtual private cloud: your own isolated private network inside a public cloud, where you control IP ranges, subnets, routing and access.
  • security groupA virtual firewall in the cloud with rules that say which network traffic, by port and source, may reach or leave a server or other resource.
  • availability zoneOne of several separate data center locations inside a cloud region, each with its own power and network, so a failure in one should not affect the others.
  • load balancerA service that receives incoming traffic and spreads it across several servers, sending requests only to the ones that are healthy.

This word in other fields

The same English word can have a different meaning in another field:

More terms: Release and Maintenance

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