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LDM Failover Configuration

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  • Subject: LDM Failover Configuration
  • Date: Tue, 15 Jun 2004 08:54:03 -0600
Kathy,

>Date: Mon, 14 Jun 2004 11:41:57 -0400
>From: Kathy Carusone <address@hidden>
>Organization: MIT Lincoln Laboratory
>To: address@hidden
>Subject: LDM Failover Configuration
>Keywords: 200406141537.i5EFbZtK014545

The above message contained the following:

> Jami Casamento recommended I contact you regarding configuring LDM 
> clients to failover to a secondary server. At MIT Lincoln Laboratory, we 
> have been using LDM for a few years to acquire and feed NEXRAD Level II 
> data to/from CRAFT, for our Corridor Integrated Weather System (CIWS) 
> project.. We have direct connections to 26 NEXRADs and provide the data 
> over Internet II to CRAFT. We also acquire 10 Level II feeds from CRAFT 
> With the changes in the NWS configuration, we will be transitioning to 
> ingesting more than we feed. With this added reliance on CRAFT for our 
> data, we have arranged to be able to acquire data from either CRAFT or 
> the NWS MD server.

We call the NWS MD server "The MAX".

> I have been reading LDM configuration info, and saw comments on the pros 
> and cons of redundant REQUEST entries for duplicate feeds, but I am not 
> sure that is how I should set it up. It may not be unreasonable for us 
> to have to do a "hard switch" from one server to another. Any 
> information or hints you can provide would be appreciated!

I'm not sure what you mean by a "hard switch".

Do you have sufficient networking bandwidth that you can afford to have
two incoming data-feeds for the same data?

> Kathy
> -- 
> 
> ------------------------------------------------------------
> Kathy Carusone
> MIT Lincoln Laboratory
> Lexington, MA 02420 
> 
> address@hidden
> (781)981-5039

Regards,
Steve Emmerson