Re: [ns] Packets in link's Queue

2011-01-31 Thread Teerawat@UBC 

HI,

NS2 implements buffering in link, not in node. This is to model the link with 
large bandwidth-delay product. For example, consider a link with 100 Mbps link 
and 1 s propagation delay, and packets whose size is 1 Mbits. Then this link 
can stores upto 100 packets at any instance. 

Best Regards,

Teerawat Issariyakul
http://www.ns2ultimate.com/
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On Jan 28, 2011, at 4:24 PM, Hosseini Nezhad wrote:

> 
> Hi
> 
> Suppose that, Node(A) want to send packets to Node(B) by TCP protocol.
> 
> Node(A) send a packet , after deliver that ACK send 2 packets and
> after deliver those ACk send 4 packets and ... .
> 
> The bandwidth =2Mbps
> Propagation delay is= 10ms
> Link's Queue length=20
> 
> My Question is :
> Why some packets(almost 14 packets) go in link's queue?How I can
> describe this event?
> 
> Thanks
>

[ns] Packets in Link's Queue

2011-01-29 Thread Hosseini Nezhad 

Hi

Suppose that, Node(A) want to send packets to Node(B) by TCP protocol.

Node(A) send a packet , after deliver that ACK send 2 packets and
after deliver those ACk send 4 packets and ... .

The bandwidth =2Mbps
Propagation delay is= 10ms
Link's Queue length=20
Packet size is 1000 byte.
Time =10second
The window size is default in NS-2.


My Question is :
Why some packets(almost 14 packets) go in link's queue?How I can
describe this event?

Thanks

[ns] Packets in link's Queue

2011-01-28 Thread Hosseini Nezhad 

Hi

Suppose that, Node(A) want to send packets to Node(B) by TCP protocol.

Node(A) send a packet , after deliver that ACK send 2 packets and
after deliver those ACk send 4 packets and ... .

The bandwidth =2Mbps
Propagation delay is= 10ms
Link's Queue length=20

My Question is :
Why some packets(almost 14 packets) go in link's queue?How I can
describe this event?

Thanks