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Hello,<br>
<br>
An internal customer is using WinOF 2.0.X and has reported to me the
following behavior related to IPoIB and ping:<br>
<br>
<i>Do you have any ideas on why windows 2008 client with HCA may first
timeout ping to other clients on the fabric?<br>
<br>
Initially ping fails but then starts working.<br>
<br>
Example :
Ping is invoked three times successfully.<br>
<br>
C:\GRITS>ping -a 192.168.100.235<br>
<br>
Pinging 192.168.100.235 with 32 bytes of data:<br>
Request timed out.<br>
Request timed out.<br>
Request timed out.<br>
Request timed out.<br>
<br>
Ping statistics for 192.168.100.235:<br>
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),<br>
<br>
C:\GRITS>ping -a 192.168.100.235<br>
<br>
Pinging 192.168.100.235 with 32 bytes of data:<br>
Request timed out.<br>
Request timed out.<br>
Reply from 192.168.100.235: bytes=32 time<1ms TTL=255<br>
Reply from 192.168.100.235: bytes=32 time<1ms TTL=255<br>
<br>
Ping statistics for 192.168.100.235:<br>
Packets: Sent = 4, Received = 2, Lost = 2 (50% loss),<br>
Approximate round trip times in milli-seconds:<br>
Minimum = 0ms, Maximum = 0ms, Average = 0ms<br>
<br>
C:\GRITS>ping -a 192.168.100.235<br>
<br>
Pinging 192.168.100.235 with 32 bytes of data:<br>
Reply from 192.168.100.235: bytes=32 time<1ms TTL=255<br>
Reply from 192.168.100.235: bytes=32 time<1ms TTL=255<br>
Reply from 192.168.100.235: bytes=32 time<1ms TTL=255<br>
Reply from 192.168.100.235: bytes=32 time<1ms TTL=255<br>
<br>
Ping statistics for 192.168.100.235:<br>
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),<br>
Approximate round trip times in milli-seconds:<br>
Minimum = 0ms, Maximum = 0ms, Average = 0ms<br>
<br>
Then we are good for sometime before this starts again if network is
idle on the fabric.<br>
</i><br>
Has this sort of behavior been observed before? The Linux and Solaris
nodes sharing the same IP subnet appear to be behaving normally.
Windows server is the "out-of-the-box" configuration with Voltaire
switch configured with only the default partition (0xFFFF).<br>
<br>
-David<br>
<br>
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