Date: Tue, 7 Feb 1995 13:11:12 -0500 (EST) From: "Alex R.N. Wetmore" <aw2t+@andrew.cmu.edu> To: freebsd-hackers@freefall.cdrom.com Subject: Re: SLIP (ping time over 14400) Message-ID: <IjBvT0m00iV5M4dl9F@andrew.cmu.edu> In-Reply-To: <199502071231.NAA19137@gilberto.physik.rwth-aachen.de>
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Excerpts from internet.computing.freebsd-hackers: 7-Feb-95 SLIP (ping time over 14400) by Christoph Kukulies@gilbe > What are the usual turn around times when pinging a host over a 14400 > SLIP link resp. what ftp rates can one expect? Your ping times sound good to me. Here are results that I'm getting between my host (which has 10mb ethernet connectivity all the way to the ANS backbone) and a friends machine (which has 28800 SLIP connectivity to a T1 connection) through traceroute (first) and ping (second). 1 DORM-RTR.NET.CMU.EDU (128.2.75.254) 6.178 ms 5.197 ms 4.408 ms 2 CMU-DEFAULT.NET.CMU.EDU (128.2.1.2) 6.216 ms 9.977 ms 9.83 ms 3 PSC-GW-1.NET.CMU.EDU (128.2.2.1) 5.486 ms 7.41 ms 4.828 ms 4 enss.psc.edu (192.88.114.253) 13.127 ms 8.985 ms 8.743 ms 5 prep-rtr.psc.edu (192.5.146.7) 13.216 ms 13.977 ms 12.009 ms 6 129.250.200.3 (129.250.200.3) 39.06 ms 78.929 ms 21.052 ms 7 portcullis.galt.com (199.234.1.161) 20.343 ms 23.912 ms 20.151 ms 8 dhp.com (199.234.136.1) 247.586 ms 223.822 ms 296.993 ms PING dhp.com (199.234.136.1): 56 data bytes 64 bytes from 199.234.136.1: icmp_seq=0 ttl=247 time=303.404 ms 64 bytes from 199.234.136.1: icmp_seq=1 ttl=247 time=356.554 ms 64 bytes from 199.234.136.1: icmp_seq=2 ttl=247 time=285.851 ms 64 bytes from 199.234.136.1: icmp_seq=3 ttl=247 time=315.565 ms --- dhp.com ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 285.851/315.344/356.554 ms > I have a link running and it shows 200 ms. The ftp rate is significantly > below 1KB/s. I would expect better then 1k/s. What speed are you running the serial port at (it should be at least 38.4k) and do you have hardware handshaking on? I can usually get about 3k/s to the above machine. alex
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