Topic: SMD Latency at McMurdo due to Black Island Network Issue

Date/Time Issued: September 24, 2020 2320Z

Product(s) or Data Impacted: N20 Products

Date/Time of Initial Impact: September 24, 2020 1343Z

Date/Time of Expected End: September 25 , 2020 1325Z

Length of Outage: 12 hours

Details/Specifics of Change: SMD data out of McMurdo continues to be very slow, causing a backlog on the JSH during SVL contacts due to the Black Island network issue. To mitigate this, the following contacts have been deleted from McMurdo:

MCM Rev 14772 @13:43:49z (DOY268) to MCM Rev 14785 @11:45:15z (DOY269). Total of 14 orbits affected.

Additional testing will be performed when day shift comes on Friday, September 25th for further analysis. The first N20 McMurdo contact attempt on 9/25 will be at 13:25z (9:25am local EST).

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