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Hybrid Routing Protocol (HRP)

Last updated: November 9, 2011

What Does Hybrid Routing Protocol (HRP) Mean?

Hybrid Routing Protocol (HRP) is a network routing protocol that combines Distance Vector Routing Protocol (DVRP) and Link State Routing Protocol (LSRP) features. HRP is used to determine optimal network destination routes and report network topology data modifications.

HRP is also known as Balanced Hybrid Routing (BHR).


Techopedia Explains Hybrid Routing Protocol (HRP)

HRP features are as follows:

  • Requires less memory and processing power than LSRP
  • Integrates reactive and proactive routing advantages
  • Serves activated nodes via reactive flooding

Proactive HRPs are as follows:

  • Enhanced Interior Gateway Routing Protocol (EIGRP): Employs LSRP mechanisms
  • Core Extraction Distributed Ad Hoc Routing (CEDAR): Establishes a data transmission network via reactive core node routing
  • Zone Routing Protocol (ZRP): Segments networks into local neighborhoods (known as zones)
  • Zone-Based Hierarchical Link State (ZHLS): Peer-to-peer (P2P) protocol based on node and zone identification

Reactive HRPs with efficient flooding mechanisms are as follows:

  • Preferred Link-Based Routing (PLBR): Reactive routing protocol, where each node maintains a neighbor table (NT) and neighbor’s neighbor table (NNT)
  • Neighbor Degree-Based Preferred Link (NDPL) and Weight-Based Preferred Link (WBPL) Subset: Preferred list (PL) routing request messages forwarded by PLs only
  • Optimized Link State Routing (OLSR): Proactive routing protocol based on the link state algorithm

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