15 GREAT THOUGHTS BY CHANAKYA

1) "Learn from the mistakes of others... you can...'t live long enough to make them all yourselves!!"


2)"A person should not be too honest. Straight trees are cut first and Honest people are screwed first."


3)"Even if a snake is not poisonous, it should pretend to be venomous."


4)"There is some self-interest behind every friendship. There is no friendship without self-interests. This is a bitter truth."


5)" Before you start some work, always ask yourself three questions - Why am I doing it, What the results might be and Will I be successful. Only when you think deeply and find satisfactory answers to these questions, go ahead."


6)"As soon as the fear approaches near, attack and destroy it."


7)"The world's biggest power is the youth and beauty of a woman."


8)"Once you start a working on something, don't be afraid of failure and don't abandon it. People who work sincerely are the happiest."


9)"The fragrance of flowers spreads only in the direction of the wind. But the goodness of a person spreads in all direction."


10)"God is not present in idols. Your feelings are your god. The soul is your temple."


11) "A man is great by deeds, not by birth."


12) "Never make friends with people who are above or below you in status. Such friendships will never give you any happiness."


13) "Treat your kid like a darling for the first five years. For the next five years, scold them. By the time they turn sixteen, treat them like a friend. Your grown up children are your best friends."


14) "Books are as useful to a stupid person as a mirror is useful to a blind person."


15) "Education is the Best Friend. An Educated Person is Respected Everywhere. Education beats the Beauty and the Youth."

Choose your BOSS carefully

There was once a washer man who had a donkey and a dog. One night when the whole world was sleeping, a thief broke into the house, the washer man was fast asleep too but the donkey and the dog were awake. The dog decided not to bark since the master did not take good care of him and wanted to teach him a lesson. The donkey got worried and said to the dog that if he doesn't bark, the donkey will have to do something himself. The dog did not change his mind and the donkey started braying loudly. Hearing the donkey bray, the thief ran away, the master woke up and started beating the donkey for braying in the middle of the night for no reason. Moral of the story “One must not engage in duties other than his own"

Now take a new look at the same story... The washer man was a well educated man from a premier management institute. He had the fundas of looking at the bigger picture and thinking out of the box. He was convinced that there must be some reason for the donkey to bray in the night.. He walked outside a little and did some fact finding, applied a bottom up approach, figured out from the ground realities that there was a thief who broke in and the donkey only wanted to alert him about it. Looking at the donkey's extra initiative and going beyond the call of the duty, he rewarded him with lot of hay and other perks and became his favorite pet. The dog's life didn't change much, except that now the donkey was more motivated in doing the dog's duties as well. In the annual appraisal the dog managed "ME" (Met Expectations) . Soon the dog realized that the donkey is taking care of his duties and he can enjoy his life sleeping and lazing around. The donkey was rated as “star performer". The donkey had to live up to his already high performance standards. Soon he was over burdened with work and always under pressure and now is looking for a NEW JOB ... !!!!

Tunneling

Handling the general case of making two different networks interwork is exceedingly difficult. However, there is a common special case that is manageable. This case is where the source and destination hosts are on the same type of network, but there is a different network in between. As an example, think of an international bank with a TCP/IP-based Ethernet in Paris, a TCP/IP-based Ethernet in London, and a non-IP wide area network (e.g., ATM) in between, as shown in Fig. given below

Tunneling a packet from Paris to London.













The solution to this problem is a technique called tunneling. To send an IP packet to host 2, host 1 constructs the packet containing the IP address of host 2, inserts it into an Ethernet frame addressed to the Paris multiprotocol router, and puts it on the Ethernet. When the multiprotocol router gets the frame, it removes the IP packet, inserts it in the payload field of the WAN network layer packet, and addresses the latter to the WAN address of the London multiprotocol router. When it gets there, the London router removes the IP packet and sends it to host 2 inside an Ethernet frame.
The WAN can be seen as a big tunnel extending from one multiprotocol router to the other. The IP packet just travels from one end of the tunnel to the other, snug in its nice box. It does not have to worry about dealing with the WAN at all. Neither do the hosts on either Ethernet. Only the multiprotocol router has to understand IP and WAN packets. In effect, the entire distance from the middle of one multiprotocol router to the middle of the other acts like a serial line.
An analogy may make tunneling clearer. Consider a person driving her car from Paris to London. Within France, the car moves under its own power, but when it hits the English Channel, it is loaded into a high-speed train and transported to England through the Chunnel (cars are not permitted to drive through the Chunnel). Effectively, the car is being carried as freight, as depicted in Fig. given below. At the far end, the car is let loose on the English roads and once again continues to move under its own power. Tunneling of packets through a foreign network works the same way.


Tunneling a car from France to England.











(Courtesy:-A.S.Tanenbaum)