2 Replies Latest reply on Jun 30, 2014 2:34 PM by Kasey Parker

    change netmask

    Avadhut

      Hi All,

       

      We are planning to change the netmask which is currently 255.255.252.0 and is configured wrong.

       

      Now we are planning to change to it correct one i.e 255.255.255.0.

      I have done the vip and netmask modification on RAC.

      Same steps i am planning to follow here.

      Stop cluster

      crsctl stop cluster -all on  node 1

      crsctl stop cluster -all on node 2

      As the OS admin to change the netmask to 255.255.255.0

      start the cluster

      crsctl start crs

      srvctl stop nodeapps -n node 1

      modify the nodeapps

      srvctl modify nodeapps with new netmask

      Start nodeapps and check if updated using srvctl config nodeapps.

       

      Is there more we need to do more on exadata or will it affect cell node.

      Above steps is ok.

       

      Env Details -

      Exadata version - 11.2.1.1

      DB version - 11.2.0.4

      RAC version - 11.2.04

       

      Please suggest.

       

      Thanks

        • 1. Re: change netmask
          Avadhut

          Hi,

           

          Please somebody help me on this if anybody has done this activity on Exadata.

          • 2. Re: change netmask
            Kasey Parker

            Hi Avadhut -

             

            What networks on the Exadata are you needing to change the netmask for? I have never changed a netmask on Exadata. However, if I were to do so I would follow the instructions in MOS Note "Changing IP addresses on Exadata Database Machine (Doc ID 1317159.1)" - but obviously only modify the areas specific to the netmask, which should mean less changes than if changing IP address but still should cover all the components needed for each of the various networks, switches, and other configuration files. You should also refer to, as does this MOS note, ch.6 of the Exadata Machine Owners Guide... the first few sections of this guide covers the networking configuration on Exadata. You may also need to refer to ch.7 of the Owners Guide on Maintainin the Exadata Rack... there are several sections on making various updates to the networking components on Exadata - lots of information specific to maintenance and changing the Infiniband network information.

             

            Hope that helps.

             

            Thanks,

            Kasey