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rafaelbn's avatar
rafaelbn
Icon for Cirrostratus rankCirrostratus
Jan 30, 2020

nPath/DSR configuration

Hello devs!

 

I'm exploring the nPath/DSR topology on a lab of mine. Here is the topology:

 

 

 

I can see traffic hitting the RED server but it never responds to the client:

 

 

 

The httpd processes is running correctly. If I curl to the VIP IP on the server (it's loopback), I get a response just fine:

 

 

 

And netstat on the server confirms it's listening on all IPs:

 

 

 

 

Here is the VS configuration:

 

 

 

Am I missing something?

 

Cheers, Rafael

  • pauldh's avatar
    pauldh
    Icon for Nimbostratus rankNimbostratus

    Did you ever find an answer to this issue? We're seeing something similar.

    We bind the VIP on the linux hosts loopback interface. The request arrives to the real server, however the return packet from the real server specifies the real servers IP versus the VIP/Loopback ip.

    • rafaelbn's avatar
      rafaelbn
      Icon for Cirrostratus rankCirrostratus

      Hello Paul!

       

      Unfortunately I didn't. The only way this worked was the VIP and realserver IP being on the same network.

       

      And I don't know if I was missing something aswell.

       

      Best of luck. Rafael