Troubleshooting, it’s something we all do. It may be your parents Internet connection, the company photocopier, your kid’s car or the core network of a medium sized bank. However, troubleshooting is not like that, it’s more like football, years of watching and playing does not guarantee to make you a superstar. However, with troubleshooting, just like football, it does teach you enough so you have an opinion on how it should be done.
Capturing VLAN Tagged Packets and Microsoft Windows
10 August 2010 By 3 Comments
Maximum Number of Insertions for GBICs
9 July 2010 By 6 Comments
Ever thought about whether a GBIC has a maximum number of insertions into a transceiver ? Surprising answer follows…..
Sharing Ideas – GLBP and HSRP
20 May 2010 By 5 Comments
Best Technique for Date Formatting and the Global Problem – ISO8601
30 March 2010 By 4 Comments
When working in a global company, a major problem is the way that some countries use the wrong date formatting. Say hello to ISO8601, standard for date formats.
Average IP Packet Size | Slaptijack
18 March 2010 By 6 Comments
Review: robtex.com – DNS and Peering Tool
15 March 2010 By 2 Comments
An astonishing resource that provide a lot details on BGP AS, IP addressing, ownership, whois, DNS checking and much more.
Reloading IOS Config at CLI for Dynamips/Dynagen
14 March 2010 By 2 Comments
Using Choosy for OSX. A Better Way to Use Multiple Browsers.
6 March 2010 By 3 Comments
I use multiple web browsers all day. One for typical web, and another for network management. I need a way to easily select which one I want.
Notes on Cisco Catalyst 6500 Architecture. (Or What Does 720 in Supervisor 720 Mean ?)
4 February 2010 By 13 Comments
What does the ’720′ in the Supervisor 720 stand for ? Or, what do you need to know about Cisco C6500 switch architecture.
Key Change for Cisco IOS 15 – Feature Licensing and How We Work.
13 January 2010 By 10 Comments
Welcome to IOS 15, Feature licensing and complicated maintenance procedures….
Cisco Announces EOS and EOL Cisco IOS Software Release 12.4
13 January 2010 By 3 Comments
Cisco announces the End of Life and End of Support dates for 12.4. Before IOS 15.0 is even warming up, the previous version of 12.4 is already on life support.
Can You Learn Anything From Google or Facebook Data Centers ?
10 January 2010 By Leave a Comment
Google and Facebook have been puffing themselves up about how clever they are at solving technical problems. Is it just cheap marketing, and is there actually anything that Enterprise computing can learn from what they have shared ?
Google DNS – Not Proving to Be ‘All That’
8 December 2009 By 4 Comments
Configuring Network Locations in Mac OSX.
3 December 2009 By 5 Comments
When you are working in a lab environment, you often need to connect your laptop to different networks so that you can test stuff. For simple change like an IP address or a default gateway a script is useful. But you may want to have a much more sophisticated profile, such as different proxy servers and multiple ethernet ports. And if you are working on different sites, each one with different IP addressing and DNS details, and maybe even different proxy settings or 802.1x. Mac OSX has a way for configuring multiple profiles for your Ethernet connection ( or Airport wireless).
Install GNS3 on Mac OSX Leopard
28 October 2009 By 25 Comments
This post looks at installing GNS3 on Snow Leopard and has a number of screenshots and some tips on making it go well.
Putty, the Command Line and NO Clicky Clicky
5 October 2009 By 32 Comments
