Hi Jaya,
It's hard to explain the concept of the timer without knowing what event
scheduler is, and how it works. But I am going to give you quick answer.
Timer is used when you want to delay something. An example is TCP
retransmission timer, which will trigger TCP to retransmit the packet
after a given delay. Timer has interfaces to set (schedule), reset
(reschedule), and cancel.
I will blog about the event scheduler soon at my blog
www.ns2ultimate.com
(The current blog topic is routing modules and classifiers)
Anyway if you are in hurry you can have a look at chapters 4 and 12 in
the following books.
T. Issaraiyakul and E. Hossain, Introduction to Network Simulator NS2,
Springer 2009. Here is the link
http://www.amazon.com/gp/product/0387717595?ie=UTF8&tag=ns2ultteeiss-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=0387717595
You may also find lecture notes and other resource at the following
website: http://www.ece.ubc.ca/~teerawat/NS2.htm
Best Regards,
Teerawat Issariyakul
http://www.ns2ultimate.com/
http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417
http://twitter.com/T_Bear
http://www.t-issariyakul.blogspot.com
http://www.ece.ubc.ca/~teerawat
n 3/28/2010, "jaya vignesh" wrote:
>
>
>
>Hi,
>I would like to know the functioning of timer handler functions like resched
>and handle?? What is use of these?
>Also, in my routing code, when i attach any traffic to my node like [cbr(0)
>start] in my tcl, automatically i should invoke a beaconing procedure
>function, where that particular node for which the cbr traffic is attached
>should send the beacon packet to find the satisfactory neighbor based on
>beacon reply.
>Any sample flow to explain how to obtain the node for which the cbr traffic is
>attached.?
>Thanks,
>Jayavignesh
>
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