<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2900.3059" name=GENERATOR></HEAD>
<BODY>
<DIV><FONT face=Arial size=2><SPAN
class=272085123-09042007>Moni,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272085123-09042007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272085123-09042007>I've been testing
IPoIB bonding on RHEL4 x86_64 and RHEL5 x86_64, and have some questions.
This feature looks like it has a lot of potential, thanks for adding it to OFED
1.2.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272085123-09042007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272085123-09042007>1) IPoIB bonding and
IPoIB CM do seem to work together, but after running ib-bond --bond-ip, I have
to manually reconfigure IPoIB CM (both mode and mtu) again, then increase the
bond0 mtu. It would be nice if ib-bond took care of this for
me.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272085123-09042007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272085123-09042007>2) I tried a port
failover stress test overnight (flipping a port every 10 seconds) and got an HCA
catastrophic error, how much failover stress testing have you done while traffic
is running?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272085123-09042007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272085123-09042007>3) Can I configure
IPoIB bonding to start at boot time as part of the standard /etc/sysconfig
network scripts?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272085123-09042007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272085123-09042007>4) Do you have any
plans to support load balancing in addition to failover?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272085123-09042007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272085123-09042007>5) I've seen some
erratic throughput with netperf using bond0 (no failover happening), have you
seen this? For example:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=272085123-09042007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=272085123-09042007>Interim result:
2731.18 10^6bits/s over 1.00 seconds<BR>Interim result: 2732.57 10^6bits/s over
1.00 seconds<BR>Interim result: 2717.93 10^6bits/s over 1.01 seconds<BR>Interim
result: 1609.63 10^6bits/s over 1.69 seconds<BR>Interim result: 487.73
10^6bits/s over 3.30 seconds<BR>Interim result: 394.51 10^6bits/s over
1.24 seconds<BR>Interim result: 380.00 10^6bits/s over 1.04
seconds<BR>Interim result: 621.87 10^6bits/s over 1.08 seconds<BR>Interim
result: 372.02 10^6bits/s over 1.67 seconds<BR>Interim result:
388.15 10^6bits/s over 1.00 seconds<BR>Interim result: 419.81 10^6bits/s
over 1.00 seconds<BR>Interim result: 369.75 10^6bits/s over 1.14
seconds<BR>Interim result: 858.04 10^6bits/s over 1.00 seconds<BR>Interim
result: 2285.79 10^6bits/s over 1.15 seconds<BR>Interim result: 501.81
10^6bits/s over 4.56 seconds<BR>Interim result: 465.64 10^6bits/s over
1.08 seconds<BR>Interim result: 499.98 10^6bits/s over 1.00
seconds<BR>Interim result: 478.41 10^6bits/s over 1.05 seconds<BR>Interim
result: 482.03 10^6bits/s over 1.00 seconds<BR>Interim result:
494.85 10^6bits/s over 1.01 seconds<BR></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV align=left><FONT face=Arial size=2>Scott Weitzenkamp</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>SQA and Release Manager</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Server Virtualization Business
Unit</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Cisco Systems</FONT></DIV>
<DIV> </DIV></BODY></HTML>