On 5/9/11 9:46 AM, quamar niyaz wrote:
Hi,
I am working on a application which is meant for Delay Tolerant Network. I
want to emulate the opportunistic link availability for the data sending
nodes using dummyNet . One scenario, suppose from source node to
destination node let's say a data link is available at around 9 a.m. morning
and the latency of the link from source node to destination node is 1hr. So
if a request for upload comes around 8 a.m. at the sending node then the
data should start reaching to the destination node after 10 a.m. as the link
between the nodes comes at 9 and the latency is 1 hr so delivery time at the
destination node(9 a.m. +1hr. = 10.am.). In other words sending node should
hold the data in its buffer till 10 a.m as the nodes are actually in my 100
Mbps LAN so for emulating this the sender must start sending the data after
10 a.m.
Can the buffer holds such large amount of data e.g. 500 MB for an hour. Or I
have to modify the buffer size if yes, to which file i have to modify and
then build dummynet. Or simply writing a batch scripts is fine for this.
Please let me know. Thanks in advance
pull the packets offline using divert, ng, pcap or similar and store
them on disk,
then reinject them later.
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