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amishera
Contributor
Contributor

Netperf/Netserver working in one direction only

Hi,

I have setup two ESX hosts and I am running two VMs in them. Now what happens is that if I run netserver in one particular VM and netperf in another particular VM, it says:

establish_control: are you sure there is a netserver listening on 10.15.213.99 at port 12865?

establish_control could not establish the control connection from 0.0.0.0 port 0 address family AF_UNSPEC to 10.15.213.99 port 12865 address family AF_UNSPEC

The commands used are:

netserver (one VM)

netperf -H 10.15.213.99 (another VM)

On the other hand if I run the netperf/netserver from opposite direction, it works perfectly.

More interestingly, if I create two VMs on that (culprit) ESX host then this works perfectly too. So I thought that mf ESX host has some firewall issues. So I do the following for ESX host:

chkconfig firewall off

esxcfg-firewall --allowIncoming --allowOutgoing

service iptables stop

and from VM I do the following:

chkconfig firewall off

service iptables stop

But of no avail. This is a peculiar problem and I believe this will entertain us all to find the proper solution.

Some help would be greatly appreciated here.

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