Re: Network Performance?

[Erik Mouw]

On Mon, Jan 08, 2001 at 09:06:45AM -0500, Tim Sailer wrote:
> On Mon, Jan 08, 2001 at 09:26:23PM +1100, Andrew Morton wrote:
> > You're sending and receiving FTP/TCP/IP4 to Solaris and AIX hosts
> 
> Yup
> 
> > You have a 1000kbyte window size
> 
> Yup
> 
> > You have an 80 megabit/sec pipe.
> 
> Actually, 100 to the router, and then the WAN connection to the remote
> system is OC-3
> 
> > You're getting 1.8 megabits/sec.
> 
> Yup
> 
> > What is the round-trip time on the WAN?
> > 
> > Packet loss?
> 
> 101 packets transmitted, 101 packets received, 0% packet loss
> round-trip min/avg/max = 109.6/110.3/112.2 ms

I had similar problems two weeks ago. Turned out the connection between
two switches: one of them was hard wired to 100Mbit/s full duplex, the
other one to 100Mbit/s half duplex. Just to rule out the obvious...

Erik

-- 
J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031,  2600 GA Delft, The Netherlands
Phone: [phone]  Fax: [phone]  Email: [e-mail]
WWW: http://www-ict.its.tudelft.nl/~erik/