There is a Share presentation called "Getting the most out of your OSA (Opens 
Systems Adapter)" that does a much better job of describing how the OSA works 
than I can. 


On Wed, 18 Oct 2023 22:58:15 -0500, Jon Perryman <jperr...@pacbell.net> wrote:

>On Wed, 18 Oct 2023 17:18:33 +0000, Allan Staller <allan.stal...@hcl.com> 
>wrote:
>
>>Agreed, however it seems the OP is operating in a "toggle-plex" i.e. either 
>>LPAR A is running or LPARB is running. In this case, the DVIPA would be 
>>deactivated on one of the LPARS and switched manually via the V TCPIP command 
>>to activate/deactivate the DVIPA on LPARA or LPARB.
>>
>>The "old LPAR" will automatically switch to backup mode when the "new LPAR" 
>>is changed from backup to active.
>
>The way I read the OP's response, he says everything is handled in the OSA and 
>TCP automatically notifies the OSA when changes affect packet routing.
>
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