RFC 2092 (rfc2092) - Page 1 of 6

Protocol Analysis for Triggered RIP

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Network Working Group                                     S. Sherry
Request for Comments: 2092                                   Xyplex
Category: Informational                                    G. Meyer
                                                              Shiva
                                                       January 1997


                  Protocol Analysis for Triggered RIP

Status of this Memo

   This memo provides information for the Internet community.  This memo
   does not specify an Internet standard of any kind.  Distribution of
   this memo is unlimited.

Abstract

   As required by Routing Protocol Criteria [1], this report documents
   the key features of Triggered Extensions to RIP to Support Demand
   Circuits [2] and the current implementation experience.

   As a result of the improved characteristics of Triggered RIP, it is
   proposed that Demand RIP [5] be obsoleted.

Acknowledgements

   The authors wish to thank Johanna Kruger and Jim Pearl of Xyplex for
   many comments and suggestions which improved this effort.

1. Protocol Documents

   "Triggered Extensions to RIP to Support Demand Circuits" [2] suggests
   an enhancement to the "Routing Internet Protocol" (RIP) [3] and
   "RIP-2" [4] to allow them to run more cost-effectively on Wide Area
   Networks (WANs).

2. Applicability

   Triggered RIP requires that there is an underlying mechanism for
   determining unreachability in a finite predictable period.

   The triggered extensions to RIP are particularly appropriate for WANs
   where the cost - either financial or packet overhead - would make
   periodic transmission of routing (or service advertising) updates
   unacceptable:

   o  Connection oriented Public Data Networks - for example X.25 packet
      switched networks or ISDN.



Sherry & Meyer               Informational
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