Configure DHCP Test from VMware Hosted HostMonitor

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TFHDC
Posts: 6
Joined: Thu Dec 01, 2016 4:34 pm

Configure DHCP Test from VMware Hosted HostMonitor

Post by TFHDC »

I am trying to setup DHCP test using two methods both are failing. Any suggestions? Thanks.

Method 1, using default DHCP test, specifying DHCP servername in "Host", default timeout and Request IP is an IP in the configured scope of that particular DHCP server. Returns "No answer". In DHCP logs:
15,12/05/16,19:10:31,NACK,10.238.3.201,,000C6E8CD461,,0,6,,,

Method2, using shell script and dhcpcheck:
StartCMD:
%Script% %Params%
Script:
"C:\Program Files (x86)\HostMonitor\Utils\dhcpcheck\dhcpcheck.exe" -host:10.238.0.21 -clientIP:10.238.3.241 -timeout:5000

Result on HostMonitor:
Confirmation packet was not received
Result on DHCP server:
15,12/05/16,19:09:41,NACK,10.238.3.241,,000C6E8CD461,,0,6,,,
KS-Soft
Posts: 13012
Joined: Wed Apr 03, 2002 6:00 pm
Location: USA
Contact:

Post by KS-Soft »

HostMonitor version?
Could you capture traffic using packet analyzer (WireShark) and send to support@ks-soft.net?

Regards
Alex
TFHDC
Posts: 6
Joined: Thu Dec 01, 2016 4:34 pm

Post by TFHDC »

It is happening in version:
v10.30

I will capture and send. Thank you.
KS-Soft
Posts: 13012
Joined: Wed Apr 03, 2002 6:00 pm
Location: USA
Contact:

Post by KS-Soft »

We don't see answer from DHCP server.
Firewall/router issue?

Regards
Alex
TFHDC
Posts: 6
Joined: Thu Dec 01, 2016 4:34 pm

Post by TFHDC »

Sorry for the delay, we are evaluating other products but am returning to take a look at HostMonitor. I spent much time configuring tests and really love the product. I am only scratching the full potential, I recently used it to test eventviewer logs for a specific event.. I love this product, I just wish I could get the DHCP test working.

The DHCP request reach the test DHCP server however I believe it is something to do with the fact it is hosted on ESX environment. When I test this from a physical server it works within the same network.

Are there any advanced support options available once license is purchased?

In the meantime, I will search the forums for vmware related threads and try to troubleshoot further on my end perhaps also engage VMWare. Thanks.
KS-Soft
Posts: 13012
Joined: Wed Apr 03, 2002 6:00 pm
Location: USA
Contact:

Post by KS-Soft »

The DHCP request reach the test DHCP server however I believe it is something to do with the fact it is hosted on ESX environment. When I test this from a physical server it works within the same network.
DHCP server runs in guest OS?
Then I think you should use "Bridged" mode for virtual network adapter.
Also, if this is Windows DHCP server, it checks if there are any other DHCP servers in the same network segment. And VMWare host acts like DHCP server so may be this cause problem?

Where HostMonitor is running? Another guest OS on the save VMWare host?

>When I test this from a physical server it works within the same network.

Do you means DHCP test works when HostMonitor started on another physical server?
but does not work when HostMonitor started on another guest OS on the save VMWare host (host where DHCP server running)?
Are there any advanced support options available once license is purchased?
Its the same kind of support for all customers

Regards
Alex
david.matthewson
Posts: 94
Joined: Tue Oct 24, 2006 12:45 pm

DHCP tests on ESXi 5.5 Guests

Post by david.matthewson »

I run several sites where we use Hostmon to check that the DHCP servers are working on Windows 2012r2 Guests running on ESX 5.5 hosts.

I'm embarrassed to say the only problem I've ever had was forgetting to add Hostmon.exe to the 'allowed' exes to pass traffic through the firewall - and get it back - from the target running the DHCP server. (Remember this is UDP not TCP.....and Microsoft firewalls..)

God luck.
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