vmware tools installed in the guests?<div><br></div><div>-theron<br><br><div class="gmail_quote">On Mon, Apr 25, 2011 at 2:00 PM, Jonathan C. Bailey <span dir="ltr"><<a href="mailto:jbailey@co.marshall.ia.us">jbailey@co.marshall.ia.us</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">I ended up figuring this out on my own... Both of the virtual NICs in the VM were VMXNET3. After changing them to E1000, everything works great.<br>
<br>
<br>
-Jon<br>
<div><div></div><div class="h5"><br>
----- Original Message -----<br>
From: "Jonathan C. Bailey" <<a href="mailto:jbailey@co.marshall.ia.us">jbailey@co.marshall.ia.us</a>><br>
To: "Central Iowa Linux Users Group" <<a href="mailto:cialug@cialug.org">cialug@cialug.org</a>><br>
Sent: Friday, April 22, 2011 4:20:21 PM<br>
Subject: [Cialug] Linux router causing me some trouble<br>
<br>
I've been banging my head against the wall for the past few hours with a routing performance issue.. Here's the test configuration:<br>
<br>
testserver (physical host) <-----gigabit wired network-----> eth0 troublerouter (Ubuntu 10.04 VM) eth1 <-----private vSwitch-----> testclient (Ubuntu 10.10), testclient2 (XP SP3)<br>
<br>
Test methods:<br>
SpeedTest mini (on testserver)<br>
iperf (Server: iperf -s -l 1024k / Client: iperf -c SERVER -l 1024k -P 10)<br>
<br>
Only configuration on troublerouter:<br>
* Disabled IPv6 (ipv6.disabled=1 passed to kernel)<br>
* Masquerade rule: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE<br>
<br>
Test results:<br>
<br>
testserver <-> troublerouter with iperf: ~900mbit<br>
troublerouter <-> testclient with iperf: ~9gbit<br>
testserver <-> testclient with iperf: ~2mbit<br>
testserver <-> testclient with speedtest mini: ~200mbit down, hangs on upload<br>
testserver <-> testclient2 with speedtest mini: ~200mbit down, hangs on upload<br>
<br>
<br>
I ran wireshark to look at things, and I see multiple fragmentation needed messages (everything is 1500 from end to end), but that's about it. I tried setting the MTU to 1400 in the test clients and that didn't help. Any ideas? Thanks!<br>
<br>
<br>
-Jon<br>
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</div></div></blockquote></div><br></div>