NEXRAD Level II Maintenance Notification - (Tuesday 7/7/2020) (TDS Path)

NCEP Network Support Branch (NSB) will be performing Phase 2 routing changes which will affect the data flow of the Level II Network TDS (Public) path.  The activity is a series of routing changes within the Silver Spring and College Park offices which support the National Level II (NL2) servers.

(Phase 2) The Enterprise VRF services cut over

•  Start Time: 7:30 AM (Central time) Tuesday July 7th, 2020
•  Duration: 3 Hours
  
•  Event: Silver Spring Networking Migration

Phase 2 will change the National Level II (NL2) TDS IP address.  To ensure you do not lose connectivity to the TDS server, we would like to remind you to add the following IP address to your ldmd.conf file on the server ingesting from the TDS to support the changes in Phase 2.   

• OLD TDS address - 140.90.73.177
• NEW TDS address -140.90.61.126

To ensure no loss of data flow, please ADD the new IP address (REQUEST & ALLOW).  Adding vs changing will mitigate the risk of data loss during the cut over to the new IP and minimize path down time from your perspective.  We will send out additional maintenance notices associated with this migration (Completion).

 The Data Path via the ROC (Norman, OK) NL2 servers is not part of this activity. (No service interruption via RDS path is anticipated.)

Please keep BOTH NL2 connections (Silver Spring & Norman) up to avoid data flow interruption.

National Level II (NL2) system monitoring will also be interrupted during this time period.  The pages will be available, but the data on the pages will not refresh (update) during the transition.

https://www.weather.gov/nl2/

• NEXRAD View - WSR-88D monitoring by site location  
  
• SERVER View - NL2 server & Network status (Shows site connectivity AND Silver Spring vs Norman Data flow)
• CONTROL View - Shows data latency for each NL2 server
  
• LDM View - Level II Data flow from site
• NPN View - Shows FSL2 data from the NOAA Profiler Network
  

  
 If there is any emergency associated with Level II data flow noted during this event, I can be reached at (405) 820-3646
 
 Thanks...
 
    ...Don