Sunday, April 29, 2007

Few Words...

To all loyal readers I want to apologies about my slow updates on the blog as my wife in her 9 month of pregnant and I going between clinic to work to study I do not have much time to take a breath so hope you understand and do not give up on me as I am continuing to update but slower...

Thank you :-)

Tuesday, April 17, 2007

CCIE MPLS Start Here...

It has been a long time since my last post, but I am glad to share with you my notes on the subject as it is helps me also get better understanding of what I am reading and testing in my lab, and I know it is not relevant to the current R&S lab or Written material but my guess that not in the far future it will be very relevant as it is a very important subject that is growing rapidly and new technology like Metro Ethernet are more and more taking the place of Frame Relay ATM technologies. MPLS (Multi Protocol Label Switching) or as I would like to call it Layer 2.5 as it is fast as layer 2 and intelligent as layer 3 but neither. Some Basics components LSR (Label Switched Router) Edge LSR same is LSR but working in the border or Edge of the MPLS cloud. There are 2 MPLS concepts (modes) MPLS frame mode and MPLS cell mode. the 2 are very different and I will not get into the bit and byte now of each but you need to remember that each one has very different behavior. MPLS is a high performance way to move a packet from one point to the other over routed network with no overhead of routing tables. I have structured a lab on Dynamips based on Cisco very nice article you can see for your self in no more then 10 minutes a 6 router lab schema working with MPLS, try you will fall in love when you will see how easy and nice it is working.

Monday, April 02, 2007

Happy Holiday

I wish you all good luck in your quest to become a CCIE, happy and Kosher passover and to all the are not Jewish I also wish you the same as I wish for my self (to get this number already..) So happy Holiday and soon I will add some more interesting notes on my journey :-)

Sunday, April 01, 2007

How to Guide For Dynamips on Linux

In continue to people comments and notes on the subject I would like to write a small doc here on how to Work with Dynampis on linux First you can download Dynamips from here and I recommend to use 0.2.6-RC5 (both for linux and windows) extract all to /home/dynagen mkdir /home/dynagen/images // for the IOS Image mkdir /home/dynagen/working // for Dynamips server outputs and memory emulation and extract your IOS image to it After you extract the binary (unless you know what you are doing I recommend to to waist your time with the Source). you need to create a shell file that will open localhost ports of Dynamips on your PC and this you can see in my artical Then all you need to do is to start the lab that you want from the labs I have given by do not forget to change the IOS image name to fit what you are using and to check your idle-pc as it is important if you want to work with more then one router. you can find more info on idle-pc here ./dynagen Network successfully started Dynagen management console for Dynamips => list Name Type State Server Console R1 3640 stopped localhost:7200 2001 R2 3640 stopped localhost:7208 2002 .... .... => start R1 // to start R1 then you can either from a new console #telnet localhost 7200 or if you in linux gui mode you can do under the Dynagen Console => telnet R1 // it will open you a telnet terminal I think it summarize almost all you need to get started so Good Luck