[Sis-csi] Text for Transport Layer Section

Lloyd Wood L.Wood at surrey.ac.uk
Tue Apr 25 17:32:57 EDT 2006


At Tuesday 2006-04-25 13:48 -0700, Scott Burleigh wrote:
>Lloyd Wood wrote:
>
>>" CFDP can run over TCP"
>>
>>has anyone ever used CFDP over TCP?
>
>I believe a TCP "UT layer" adapter for CFDP has been built and 
>tested at JPL, but I'm pretty sure it's never been used in any 
>operational sense.

so this wouldn't meet the "two interoperable independent 
implementations needed to make a standard" requirement, then?

>Unacknowledged CFDP over TCP isn't quite as outlandish a stack as it 
>might seem: TCP assures the in-order data arrival that the CFDP 
>procedures rely on (which on rare occasions produces some surprising 
>behavior in acknowledged CFDP over UDP),

surprising behaviour? not bugs/design flaws?

L.

>  and the file fragmentation and reassembly, record boundary 
> detection and preservation, and metadata features of CFDP are as 
> useful in unacknowledged mode as they are in acknowledged mode.
>
>Scott



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