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Marc_57522's avatar
Marc_57522
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Jun 06, 2011

High ping latency and loss of connection

I've installed the trial of LTM VE on ESXi 4.1 and, most of the time, it's working perfectly. Randomly, however, I lose connectivity to the LTM virtual machine and all nodes behind it. During this tim...
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Marc_57522's avatar
Marc_57522
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Jun 07, 2011
Posted By qe on 06/06/2011 01:19 PM

 

1) intermittent connectivity like this sounds like a duplicate MAC or IP address is present elsewhere within the layer2 infrastructure.

 

 

Wouldn't a dupe only cause problems on one of the interfaces? I can't ping out any of the LTM interfaces while this is going on. Would the LTM log IP conflicts anywhere?

 

2) 10ms ping responses from the node generally indicate a slow node/polling driver. The fact that responses from the VE to the node are quick indicates this behavior. Are your nodes using E1000 NICS or other fully emulated NIC types? I've seen slow responses there.

 

Node-to-node ping (even across two LTM interfaces) is at 1ms. The only pings that exceed this are LTM-to-node. The LTM installation is the trial, v10.1.0.3341 and has E1000 interfaces. All of my VM nodes use VMXNET 3 adapters, and a few are physical nodes with Broadcom NICs.

 

 

Is there a chance that the trial version of LTM VE is rate-limited by holding every packet for 10ms?