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DHCP Alert

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KLH456 posted on Fri, Feb 5 2010 9:19 AM
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Perhaps this question should go in the APM instead of NPM but thought I'd start here. I've been asked to create an alert that will tell us if the available addresses on a DHCP server falls below 10%.

Is this possible?

Thanks.

Karen

Karen Harbaugh Systems Administrator Berk-Tek

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Answered (Verified) bshopp replied on Fri, Feb 5 2010 2:08 PM
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IPAM does this out of the box, see here (http://www.solarwinds.com/products/orion/ip_address_manager/)

Brandon Shopp - Product Manager Orion NPM, Network Atlas and LANSurveyor

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robertjuric replied on Fri, Feb 5 2010 9:39 AM
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What are you using as your DHCP server?

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KLH456 replied on Fri, Feb 5 2010 9:55 AM
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Microsoft DHCP on domain controllers, which are Windows 2003 Standard Edition, SP2.

Karen Harbaugh Systems Administrator Berk-Tek
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superdave replied on Fri, Feb 5 2010 11:57 AM
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SolarWinds IPAM?

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viol8tor replied on Fri, Feb 5 2010 12:13 PM
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You can actually do this with UNDP.

I monitor all DHCP Servers ... over 90 with UNDP and have an alert when a scope is below 5% and 1%.

The only caveat, until SW adds some functionality, is that the alert matches the first scope that is full (this is a table based UNDP), so I have a report for DHCP Scopes that shows all scopes that are below the threshold.  For now, the report is necessary because we run split scopes.  Eventually, I'll update the logic of the Alert to take into consideration both servers of the split scopes...

Here is a sample alert message:

 

Date/Time: Friday, February 05, 2010 1:47 AM 

Node: XXXXXXXXX | IP Address: 10.129.0.195

Poller Group: MS DHCP Server

Poller Name: MSDHCPpercentFree on XXXXXXXXX

OID: 1.3.6.1.4.1.311.1.3.2.1.1.3

Check DHCP Scope:  10.128.248.0

Goto: http://solarwinds/Orion/NetPerfMon/NodeDetails.aspx?NetObject=N:3061



-------------------------------------------------------------
Alert Name: _Global - DHCP Server Scopes - Warning - Below 5%

 

Let me know if you are interested...

 

-v

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Answered (Verified) bshopp replied on Fri, Feb 5 2010 2:08 PM
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IPAM does this out of the box, see here (http://www.solarwinds.com/products/orion/ip_address_manager/)

Brandon Shopp - Product Manager Orion NPM, Network Atlas and LANSurveyor

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KLH456 replied on Fri, Feb 5 2010 2:40 PM
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This sounds like a possibility. I cannot open the link you included in the message.

We only have 6 DHCP servers, but also have split ranges on each.

Karen Harbaugh Systems Administrator Berk-Tek
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MarieB replied on Fri, Feb 5 2010 4:22 PM
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Hi KLH--

I was able to get the link to work, so try again. If it still doesn't work for you, manually navigate to:

www.solarwinds.com>products>orion>ip_address_manager

M

Marie Black
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KLH456 replied on Mon, Feb 8 2010 8:48 AM
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Link still does not work.

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MarieB replied on Mon, Feb 8 2010 1:05 PM
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Hi Karen--

Bummer for the confusion. Here is the actual link:

http://www.solarwinds.com/products/orion/ip_address_manager/

If this doesn't work, go to www.solarwinds.com. Click the Products tab and move the arrow down to select IP Address Manager product.

M

Marie Black
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KLH456 replied on Mon, Feb 8 2010 1:31 PM
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I was really hoping for a way to do this with my existing products, not have to spend more money to get it to work. It is a bummer.

Karen Harbaugh Systems Administrator Berk-Tek
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viol8tor replied on Tue, Feb 9 2010 1:35 PM
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I have added the UNDPs, Alert Definition and Report to Content Exchange.

See: http://thwack.com/media/p/92744.aspx

Enjoy -

- v

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KLH456 replied on Tue, Feb 9 2010 1:49 PM
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Please forgive my ignorance.. what is UNDP and what do I do with these files now that I've downloaded them.

I don't suppose there is anyway to monitor the DHCPSRVLOG-Day-log on each server for Event 14 which is A lease request could not be satisfied because the scope's address pool was exhausted...

Just thinking out loud there.

Thanks

Karen

Karen Harbaugh Systems Administrator Berk-Tek
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KLH456 replied on Tue, Feb 9 2010 1:51 PM
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OK DUH I get the UNDP, Universal Device Pollers, since I use some of those for other devices...

Karen Harbaugh Systems Administrator Berk-Tek
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viol8tor replied on Tue, Feb 9 2010 2:15 PM
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Here are your options for monitoring DHCPSRVLOG -

1.) Use SNARE - Epilog, this product converts any text based log into syslog and it is free.  (I have had problems with Epilog, so it does not come recommended.) Point Epilog at your Solarwinds Syslog Server.  Create Syslog Alerts.

2.) Use Splunk.  Splunk comes in 2 flavors, free or Enterprise.  Splunk is amazing and can do so much, but that is for you to discover.  The Enterprise version has the alerting feature enabled. (With Splunk, I parse the logs for EventID, IP Address, MAC Address and other sundries.) The price of admission for the Enterprise version is not for the faint of heart.

 

-v

 

 

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