Posts Tagged ‘ip calculator’

Twittering but Which Networking Communities exist?

Tuesday, May 12th, 2009

Yes, this time I am asking you a question, so why don’t you just leave me a comment?

Fewer posts lately
First off, I would like to explain my lack of posts. I have had less creative input lately, so I can’t actually find anything interesting enough to write about to make it fun – and that’s a big part of maintaining this blog; having fun!
I’ve had some valuable input on my attempts to create a Web 2.0 IP Calculator, and I’ve had critics .. the bad, the good.

You inspire me!
I must say that the thing that inspire me the most to work is to see something I’ve created being used and from seeing Google searches hit this blog with articles directly related to the ‘googled’ issue, it gives me a good feeling inside.

Twitter
Lately, I’ve fell for the Twitter hype and you can find my tweets over at http://twitter.com/holmie, it would be fun to follow my readers on Twitter – so if you have a user there follow me!

Website statistics and the future
Anyhow, the good critics have been more visible to me than the bad ones – so I will continue this little blog experiment of mine. I can see on the traffic stats that I now have about 200 unique users every week day, except for weekends when the unique visitors drops to from 80 to 150, but there seems to be a lower bounce rate (People are reading articles about work on Sundays, preparing for Mondays?) But the traffic seems to be growing with the content, and that hopefully means that someone finds it useful!

But BACK TO THE QUESTION: Which Networking Communities exists?
I have found small forums, but where have you found study partners or other interesting networking people?
I was a member of groupstudy.com for a while, but the amount of mails where a bit overwhelming and my email client had issues with threading the mails – so I had to unregister. Maybe I will give it a second try!

Other mailing lists that I find interesting are:
cisco-nsp
extreme-nsp
foundry-nsp

Well, if you know of a good resource (a forum, website, anything!) shout it out in the comment box.

My next post will be more technical, I promise!

8 Great Resources that Every Computer Technician Should Know About

Tuesday, March 3rd, 2009

This post is a must read for computer technicians, and the resources can be used by both amateurs and professionals. I hereby share some of my clues for knowledge!

  1. The MAC address vendor search lets you identify the vendor for a MAC address, it is very helpful when troubleshooting ARP tables. Just insert the MAC address such as 00-00-01, you will see that it is identified as XEROX.
  2. Ever been on the lookout for a BGP looking glass? Wonder what your network look like on the Internet? Need to traceroute yourself? Thomas Kernen maintains traceroute.org, which is a public looking glass listing service. Alternatively you can use routeviews.org which also provides an excellent service!
  3. Need Cisco documentation? Ciscos own site can be a very good source for information, at least when you learn to find your way around. You can find an article about mostly every technology in a Cisco box on their website!
  4. Need something that can calculate your subnets on the fly? I have an Online IPv4 and IPv6 IP Calculator, and I also made an AJAX version of it which is available on ipv6calculator.net, it can be faster to use in some situations.
  5. The RIRs (Regional Internet Registry) can give you information about IP addresses, you can find out mostly anything you would like to know about the EU IP address space from querying for example RIPEs Whois Database.
    Here is a list of the RIRs and their respective Whois Database

    • RIPE Serves the EU Region
    • ARIN Serves the US Region
    • LACNIC Serves Latin America and the Carribean
    • AfriNIC serves the African Region
    • APNIC serves the Asian Region
    • If you just want to query one time, here is a free whois proxy
  6. To monitor your BGP announced prefix from the outside you can use the service BGPmon, which will monitor your prefixes and alert you in case of path changes.
  7. Dynamips is a Cisco emulator, it successfully emulates Cisco 7200, 3600 (3620, 3640 and 3660), 2691, 3725, 3745 and the 2600 platform. You can for example use it for testing network scenarios before deploying it!
  8. New software! Fresh meat! Check out freshmeat.net, this has been around forever now. New versions of open software projects are announced there, and it is also a browsable site for Open Software.

Now it is time for you to do your homework, let me know which sites you find useful or funny in your work or sites that you use on a daily basis, GO COMMENT!

I Tried to Make a Fancy IP Calculator

Friday, February 27th, 2009

Heyhey, I have been playing around with Ajax and Javascript and I made a more fancy IP Calculator.

I have one available on this site (in the menu to the right, use it in case you don’t have javascript enabled).
If you want to try out my fancy version just go to ipv6calculator.net.

I haven’t had the chance to try the design in Internet Explorer, so if anyone can email me a screenshot or something it would be just awesome! (It is probably totally broken, because I am not a designer.)

Well, that’s that, enjoy it!