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Re: [RFC/PATCH] "strict" ipv4 reassembly

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Subject: Re: [RFC/PATCH] "strict" ipv4 reassembly
From: Rick Jones <rick.jones2@xxxxxx>
Date: Tue, 17 May 2005 13:12:18 -0700
In-reply-to: <200505171605.21093.jheffner@xxxxxxx>
References: <Pine.LNX.4.61.0505170914130.29021@xxxxxxxxxx> <200505171531.37167.jheffner@xxxxxxx> <428A4B74.4050503@xxxxxxxxxx> <200505171605.21093.jheffner@xxxxxxx>
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Timer expiration is not dependent on latency, nor is IP ID wrap time.

IP ID wrap time depends on the rate at which IP datgrams are generated. That will depend on latency if the stuff sitting above IP is latency sensitive and/or has not increased its "window" (classic TCP, or number of outstanding NFS requests ets) to compensate for latency.

So, it is certainly true that one cannot ass-u-me that a high latency path cannot have IP ID wrap, but latency can indeed be a factor in how quickly IP IDs will wrap in a given situation.

rick jones

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