nwdiag - for representing DR / HA, live & standby

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I am new to nwdiag.. and trying to document infrastructure state for disaster recovery ( or HA)

Here is one attempt..

nwdiag is not represent this in Left <> Right way.. Its hierarchical representation. does not look simple.

Will someone guide me to define a template in nwdiag in DR / HA format. Also it would be great if I can show live / Standby separately ( Solid lines & dotted lines).

Thanks

Rajesh  

nwdiag {

  inet [shape = cloud];

  inet -- routerL;

  inet -- routerR;

  

network routergroupL{

     routerL;

    routerL1;

    routerL2;

    routerL3;

  }

 network dmzL {

routerL1;

    routerL2;

    routerL3;    

      

webL01;

    webL02;

    stgL01;

  }

network routergroupR{

     routerR;

    routerR1;

    routerR2;

    routerR3;

  }

 network dmzR {

    routerR1;

    routerR2;

    routerR3;    

    webR01;

    webR02;

    stgR01;

  }  

network internal {

    web01;

    web02;

    db01;

    db02;

  }

}