Tanti Technology

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Multi-platform UNIX systems consultant and administrator in mutualized and virtualized environments I have 4.5+ years experience in AIX system Administration field. This site will be helpful for system administrator in their day to day activities.Your comments on posts are welcome.This blog is all about IBM AIX Unix flavour. This blog will be used by System admins who will be using AIX in their work life. It can also be used for those newbies who want to get certifications in AIX Administration. This blog will be updated frequently to help the system admins and other new learners. DISCLAIMER: Please note that blog owner takes no responsibility of any kind for any type of data loss or damage by trying any of the command/method mentioned in this blog. You may use the commands/method/scripts on your own responsibility. If you find something useful, a comment would be appreciated to let other viewers also know that the solution/method work(ed) for you.

Friday, 8 November 2013

Basic TCP/IP Network Troubleshooting in AIX

Basic TCP/IP Network Troubleshooting
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To see default network interface card:

   netstat -rn |egrep '(Destination|default)'


To troubleshoot name resolution:

   Check the services:

   - DNS (bind)
   - NIS (yp)
   - local (/etc/hosts)

   The above list is the default order, but
   the default can be overridden by
   /etc/irs.conf, which can be overridden by
   /etc/netsvc.conf, which can be overridden
   by the NSORDER environment variable.


To troubleshoot a server that fails to return a ping:

   The server might not be down, but its routing table
   might have errors. Someone must walk up to the
   server, login, and use netstat to determine whether
   the server can see your client's subnet.
 

To troubleshoot network services:

   Check /etc/inetd.conf to determine your service
   is not commented out. Also, try HUP'ing the
   inetd daemon:

   refresh -s inetd

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