Activity for William A Pohlchuck
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William A Pohlchuck posted a comment on ticket #142
Tests referenced in 5/9/2019 posts were run using cfdptest.
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DTN2 150 Mbps transfer
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On board g/w running DTN2. Two simultaneous 75 Mbps streams.
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Some additional testing was performed. Instead of using ION on the on board DTN gateway, DTN2 was used. So the architecture was On Board Endpoint (ION) <---- TCP CL ---> On Board DTN G/W (DTN2) <--- LTP ----> Ground DTN G/W (DTN2) <---- TCP CL ----> Ground Endpoint (ION). Using DTN2, no drop off in rates was observed (e.g., configured for 80 Mbps LTP downlink rate and sent consistently at 80 Mbps). See attached figure (ISS_DTN2_190423a.jpg) showing the space to ground bandwidth using DTN2 for both...
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Figure 3 shows the comparison of a 1 GB file transfer using "bpsendfile" (first section on plot) and CFDP (second section on plot).
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Figure 2 shows the completion of one transfer and start of another. New transfer starts at the rate of the previous transfer.
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Figures illustrate the rate drop off.
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ION Rate Dropoff During CFDP Transfer
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TCP Connection Not Being Disconnected
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sdrwatch with -z option locks up
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TCP Outduct Not Restarted After Stopping
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Stopping of TCP outduct causes seg fault
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Limit Incoming Data Rate to a Node
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Restrict Connections to a Node
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"s outduct" causes Segmentation Fault on bpadmin
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"Bundle truncated" results on a Source Node while sending 40 1 GB files
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SDR Boundaries or Integrity Violation Error
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acsadmin Not Created in Windows Build
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Automatically Handle Status Messages if CFDP Recipient not Processing
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Flow Control, ZCO, and SDR Heapspace
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CTEB purged error during CFDP transfer using ACS
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Outduct Deletion Causes ION Lock Up
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