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Showing posts from December, 2007

CCIE BGP ORF

This days I am a little slow on article writing as I am in the final lap before my lab exam (wish to pass..) ok that was on a personal note. Now on a hopefully helping note, i had a little bit difficulty understanding first the logic behind ORF but when the coin dropped then I started hearing a voice in my head saying tada... So here it how it goes, the real BGP full table is currently almost 250K path entries, now you have connection to 3 ISP's and you want for example to get from your Backbone ISP the full table and from your other ISP's only partial table, you then face with a dilemma should I develop my human bagging skills to ask nicely from each ISP's to filter on his side specifically for you and what you will probably get as answer is "NO" or if he is nice then "NO". So now you face with a problem you can get from each of the ISP's the full table and filter on your side but it will not solve the performance and resource intensive problem …

Mary Christmas and Happy New Year

To all of you that study during the holidays and thinking they are the only one, well you are not alone. Our dedication to the goal is what Differentiate us, an expert is not the one that know all, it is the one that is most dedicated to find the best solution and do what ever it takes. So Mary Christmas and Happy New Year to all of you out there :-) Now let ABBA Continue from here....

CCIE EIGRP METRIC

One of the annoying fileds in my opinion is calculation, I hate them! in my mind it is just in the way of the cool stuff. but unfurtunetly to get to the cool stuf you need to calculate.

so I would like to start by giving you a little review and may be more indepth look over EIGRP Metric, as we all should know EIGRP is a Hybrid Routing Protocol that use a Composite Metric in his DUAL Diffusing Update Algorithm. the Composite metric is composed (good word selection :-)!?) from K Values.

K1 K2 K3 K4 K5

K1 = Bandwidth = 1 meaning it is used in the calculation by default.

K2 = load = 0 you gust it, meaning that is not participating in the calculation by default.

K3 = Delay = 1 you can take it from here

K4 = Reliability = 0

K5 = MTU = 0

the K values tells us if the value is participating in the calculation or not and what is the weight of the value, meaning that if you set K1 to 3 then it means that the weight of K1 will be 3 times more "important" or in other words it will take the BW * …