04-11-2014 11:52 AM - edited 03-07-2019 07:04 PM
Hi,
Ever since we implemented ISE 1.x with 802.1X authentication about two years ago, a number of our Windows 7 user stations occassionally report the well known error message: "duplicate ip 0.0.0.0" . Only wired stations are affected and it happens randomly but not frequently. On further investigation I found that the conflicting device mac address in every case is in fact the bia of the switch port that the Windows 7 PC client is connected. The characteristics of each case is consistent with the Cisco device tracking process as detailed in TAC Document ID: 116529, Updated: Oct 09, 2013
http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/8021x/116529-problemsolution-product-00.html
We have Cisco C6500 access switches with IOS Ver: 12.2(33)SXJ1.The output of "Show ip device track all" command on the switches:
access-switch#sh ip device track all
IP Device Tracking = Enabled
IP Device Tracking Probe Count = 3
IP Device Tracking Probe Interval = 30
I found that Cisco recommends three Solution options as follows:
1. ip device tracking probe delay 10
2. ip device tracking probe use-svi
3. ip device tracking probe interval <seconds>
However, the ios only shows track probe "count" and "interval" for change. There is no option to change the probe delay or use-svi in this IOS.
What is your advice?
Many thanks.
Sankung
04-11-2014 07:18 PM
You may have a look at this document if you have not seen it yet. It goes over device tracking a little more in detail and possible workarounds.
http://tekdigest.blogspot.com/2013/11/windows-7-with-address-conflict-for-ip.html
HTH
luke
06-23-2014 01:10 PM
Hi luke,
The url you are posting are now locked and i am unable to access it ?
Says I need an invite to read the blog ? - really ?
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