On 7/27/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Hi,
I started using ttcp (ttcp_acme actually) to test DCCP in my linux box
(v2.6.17.7). I did some initial tests with ccid2, but could not manage
switching to ccid3. How can I make ttcp to use ccid3?
Thanks.
Burak Gorkemli
Ph.D. Candidate
Koc University
Turkey
I would actually recommend using iperf as a side remark.
You need to set the default ccid to 3 as 2 is the default and ttcp
doesn't allow you to chose the CCID. Here is a script I use for setup:
sudo modprobe dccp
sudo modprobe dccp_ccid3
sudo sysctl -w net.dccp.default.seq_window=10000
sudo sysctl -w net.dccp.default.send_ackvec=0
sudo sysctl -w net.dccp.default.rx_ccid=3
sudo sysctl -w net.dccp.default.tx_ccid=3
send_ackvec should be turned off for CCID3 and the seq_window is for
connections that get out of sync (but you need a recent git tree for
the fix).
CCID3 performance has some issues which I'm working on at present too.
Ian
--
Ian McDonald
Web: http://wand.net.nz/~iam4
Blog: http://imcdnzl.blogspot.com
WAND Network Research Group
Department of Computer Science
University of Waikato
New Zealand
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