The Interzone Routing Protocol (IERP) for Ad Hoc Networks

Document Type Expired Internet-Draft (manet WG)
Authors Zygmunt Haas  , Marc Pearlman  , Prince Samar 
Last updated 2002-07-05
Stream IETF
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the Interzone Routing Protocol (IERP), the reactive routing component of the Zone Routing Protocol (ZRP). IERP adapts existing reactive routing protocol implementations to take advantage of the known topology of each node's surrounding R-hop neighborhood (routing zone), provided by the Intrazone Routing Protocol (IARP). The availability of routing zone routes allows IERP to suppress route queries for local destinations. When a global route discovery is required, the routing zone based bordercast service can be used to efficiently guide route queries outward, rather than blindly relaying queries from neighbor to neighbor. Once a route has been discovered, IERP can use routing zones to automatically redirect data around failed links. Similarly, suboptimal route segments can be identified and traffic re-routed along shorter paths.


Zygmunt Haas (
Marc Pearlman (
Prince Samar (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)