Your IP: Unknown · Your Status: ProtectedUnprotectedUnknown

Skip to main content

Stub network

Stub network

(also pocket network)

Stub network definition

A stub network is a local area network (LAN) that does not connect to the outside. A stub network can connect to outside networks but only through a single default path. It only relays packets of data internally. It can also be a dead-end LAN that only knows of one network exit. A stub network can have multiple connections, but it uses one path to single points of destination. It only has one default path to non-local hosts and has no knowledge about outside networks. So a stub network can either have one way to reach a single destination or it can have multiple ways to reach different points of a destination.

See also: ISP, OSPF

Stub network examples

  • Internet service provider. An ISP provides internet services to users, who can use them either via one router or multiple routers connected to the same network. Each user represents a stub network for the ISP.
  • LAN. A LAN that does not carry multiple router data packets and transmits data to or from local hosts.
  • Open Shortest Path First. An OSPF area that has one default OSPF routing domain path is also an example of a stub network. The OSPF area can have multiple routers with the same exit route.
  • Stub autonomous system. A stub autonomous system is connected to only one autonomous system, which is a collection of IP routing prefixes controlled by one or more network operators. The stub autonomous system accesses the internet through the autonomous system and represents another example of a stub network.

Further reading

Ultimate digital security