Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

NHRP and NBMA networks

An NBMA network connects multiple hosts, but has no broadcast or multicast capability; data is transmitted only from one device to one other device. For full connectivity in such a network, connections must be meshed in some way.

A full mesh of connections is difficult to scale, so NBMA networks often employ some version of a hub-and-spoke network to reduce the complexity of the network. However, hub-and-spoke networks have challenges of their own.

  • The hub becomes a single point of failure for the network.
  • All network traffic passes through the hub, which becomes a processing bottleneck.

NHRP allows you to reduce the number of paths through the network and reduces the need for static configuration, helping provide the connectivity of a full mesh but greater scalability.