DOS commands for Network Engineers.


  • To see the system information: systeminfo
  • Display Connection Configuration: ipconfig /all
  • Display DNS Cache Info Configuration: ipconfig /displaydns
  • Clear DNS Cache: ipconfig /flushdns
  • Release All IP Address Connections: ipconfig /release
  • Renew All IP Address Connections: ipconfig /renew
  • Re-Register the DNS connections: ipconfig /registerdns
  • Change/Modify DHCP Class ID: ipconfig /setclassid
  • Network Connections: control netconnections
  • Test Connectivity: ping
  • Displays the TCP/IP protocol sessions: netstat
  • Display Local Route: route
  • Display Resolved MAC Addresses: arp
  • Display Name of Computer Currently on: hostname
  • Display DHCP Class Information: ipconfig /showclassid
  • Name Server Lookup: nslookup
  • Access and maintain a Microsoft File/Printer Sharing environment: net
  • For Traces the route: tracert  (press ctrl+break to came out of this command)
  • Combines functions of Ping and Tracert : pathping /?
  • Used to retrieve the information about a user on a network: finger

Task Manager’s Tiny foot print mode.

Have you ever ran into this?  Or even seen it?  Windows XP Task Manager has a mode called “Tiny footprint” MS Support Page

The mode is meant to allow people who want to, display their CPU meter.   this comes in handy when running six or more routers in GNS3,  you want to make sure that your CPU is not being pegged.

Normal Task Manager Windowimage

To the left we have our normal task manager window.  If you were to double click any where on the boarder the task manager will change to the image on the right What happens is by double clicking the boarder causes the menu tabs to disappear.   When I first saw this I thought something was wrong with my windows.  I even rebooted my computer but before panicked further I went researched it on

As you can see, it makes it very easy to keep eye on your processors.

Microsoft’s Website.  You can still navigate the menus by holding <TAB> + <SHIFT> and selecting “< or >“  your arrows keys. If you never seen this before it can be nerve wracking.

Goodbye to Microsoft Windows 2000

July 13 2010 marks the end of Microsoft’s extended support for Windows 2000

I’m sad to see it go, it’s my opinion that Windows 2000 was probably one of the most stable OS’s that Microsoft put out.  I rarely had any issues running it and I know that a lot of businesses were still using the OS, it does a great job of getting basic internet tasks done.

Windows 2000We seen several services packs released over years for Windows 2000, service pack 1 gave us IPV6 support which was easily enable with the net start tcpipv6 command.   Service pack 2 gave us DX 9c and 128-bit encryption, SP 3 gave more security updates and SP 4 allows users of an Win2k users who have not applied any packs to fully upgrade.

Granted is was not all was warm and fuzy in Win2k land, there were security issues in the beginning most notably was the leak memo by Marry Jo Foley who revealed that Win2K had over sixty thousand known defects .  Win2K also received its fair virus share of famous attacks such as Code Red and Nimda.

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