Duplicate IP 0.0.0.0 Conflict on 802.1X Windows 7 Clients
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.
Selecting the proper lab training platform is fundamental to preparing for CCNA certification. Cisco CCNA is a foundational networking certification that requires knowledge of IOS configuration of multiple protocols. So where do you start and what lab tra...
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“Use Serviceability Features to Troubleshoot your Cat9K as a Cisco TAC Engineer”
This event took place on Tuesday 1st, December 2020 at 10hrs PDT
This event provides an introduction to the main Cat9K serviceability features. Serv...
This event had place on Tuesday 1st, December 2020 at 10hrs PDT
This event provides an introduction to the main Cat9K serviceability features. Serviceability is the provision of the necessary tools and features to service a Cisco prod...
This is a new product launch - Catalyst 8000 Edge Platforms Family Overview. We will go over the series Catalyst Cellular Gateway in great detail.
Speaker: David Roten, Technical Marketing Engineer at Cisco
David is a Technical Marketing Engineer for...