8 Replies Latest reply on Apr 9, 2014 9:30 AM by curtisi

    Internal hostname lookup functionality

    rduvall

      The current nslookup functionality uses external services and cannot see or resolve internal system names.  We are running "ping- a [ip]" commands by hand to get name resolution on internal systems.

        • Re: Internal hostname lookup functionality
          garrethcoleman

          Hi rduvall,

           

          Have you configured your LEM Manager network configuration using a static configuration? It is key to ensure you complete the network configuration and provide at least one DNS server for your local network. You can do this from the command line.

            • Re: Internal hostname lookup functionality
              rduvall

              But how does that address my issue?  The nslookup and whois explorer commands use an external service to do their look ups.

                • Re: Internal hostname lookup functionality
                  garrethcoleman

                  Hi,

                   

                  I see your point for WhoIS, but NSLookup and Traceroute tools use your configured DNS Server on the LEM Manager. I have validated this on my own installation, by querying several devices on my local domain and domain names external to my organisation and they return the expected results. Can you confirm that you have your LEM manager configured to use the correct DNS servers (i.e. a local DNS server with a forward lookup zone in your network).

                   

                  Here is a Traceroute to bbc.co.uk

                   

                   

                   

                  External NSLookup

                   

                   

                  Lookup to a sever on my training LAN

                   

                   

                  Traceroute to a server on my Training LAN

                   

                    • Re: Internal hostname lookup functionality
                      rduvall

                      Is there a way to see the network configuration without changing it?  The only thing I can find is the netconfig command, which doesn’t show you the current settings.

                        • Re: Internal hostname lookup functionality
                          garrethcoleman

                          Hi,

                           

                          Yes there is.

                           

                          1) Open the Console in Hyper-V/ vSphere client or SSH to the appliance and login to the cmc account (view advanced configuration if from the former)

                          cmc> appliance

                          cmc::acm# viewnetconfig

                          Would you like to view the (b)rief network configuration or (a)dvanced? <B/a> a

                           

                           

                          Look for:

                           

                           

                          DNS Server Information:

                          search xxxx.local

                          nameserver 192.168.xxx.

                           

                          Locally Configured Hosts:

                          127.0.0.1       localhost localhost.localdomain db

                          192.168.xxx.xxx   lemhostname

                           

                           

                           

                          Take a note of every setting. If it is not correct, you should take a note of it then re-run the netconfig command and specify the settings (you will need to set everything again).