I-D ACTION:draft-carlson-nhrp-00.txt

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       Title     : Guidelines for Next Hop Client (NHC) developers         
       Author(s) : R. Carlson, L. Winkler
       Filename  : draft-carlson-nhrp-00.txt
       Pages     : 6
       Date      : 07/23/1997

This document provides guidelines for developers of ATM attached host 
implementations of the Next Hop Resolution Protocol Client (NHC) protocol. 
The intent is to define the interaction between the NHC code and the TCP/IP
protocol stack of the local operating system.  The NHC is capable of 
sending NHRP requests to a Next Hop Resolution Protocol Server (NHS) to 
resolve both inter and intra LIS addresses.  The NHS reply may be positive 
(ACK) indicating a short-cut path is available or negative (NAK) indicating
that a shortcut is not available and the routed path must be used.  The NHC
must cache (maintain state) for both the ACK and NAK replies in order to 
use the correct short-cut or routed path.  The NAK reply must be cached to 
avoid making repeated requests to the NHS when the routed path 
is being used.                                                                      

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