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Network Working Group                                   Tjaart SchipperRequest for Comments #71                                25 September 1970                                                        UCLA-CCN            Reallocation in Case of Input ErrorIn case of reading a message from the IMP, it may be impossible for thereceiving NCP to determine the length of the message if an input erroroccurs. The following protocol will be used at the CCN-Host at UCLA toresynchronize flow control.If an input error is detected and the NCP can find the intended linknumber, it will send a GVB with frac = O to the sending Host and disregardfurther incoming messages on that link. When the RET has been received, anew ALL will be sent.If the sending Host is not waiting for a RFNM when the GVB arrives, it willsend the RET immediately. If it is waiting for a RFNM corresponding to themessage with the error or a RFNM corresponding to a following message, itwill send the RET after the RFNM has been received.In this way, the receiving Host will know that the link is clear before itissues a new ALL.TS/rb.     [ This RFC was put into machine readable form for entry ]     [ into the online RFC archives by Alexandra Weikert 7/97]