ip device tracking

[muhsi_2015]

,

Hi,

I am getting the duplicate error  , so  entered the following command  . "ip device tracking probe delay 10".

It did not solve the problem .So where should i enter the command  ,on distribution or access . ?

The connection between Dist and access is l2 

"ip device tracking probe use-svi"

What is ip device tracking  ? . do we really need ?

Thank you

[Julio E. Moisa]

Hi

The IP Device Tracking feature uses Address Resolution Protocol (ARP) snooping and DHCP snooping to maintain a database of IP and MAC addresses. This data is also used to track switches that do not perform routing and do not have ARP tables.

IP Device Tracking is enabled if features such as Network Mobility Service Protocol (NMSP) or Device Sensor, which have dependency on IP Device Tracking, are enabled.

IP Device Tracking is controlled at an interface level. For example, if feature X, which is dependent on IP Device Tracking is enabled on port Y, then IP Device Tracking is also enabled on port Y. However, if you want to turn off IP Device Tracking on port Y, remove feature X, which automatically disables IP Device Tracking on port Y.

To disable IP Device Tracking, turn off the features that enable IP Device Tracking, and then use the following command at the interface level:

ip device tracking maximum 0

It is not required if you are already using ip dhcp snooping or arp inspector. 

http://www.cisco.com/c/en/us/td/docs/switches/lan/Denali_16-1/ConfigExamples_Technotes/Config_Examples/Device_Tracking/ip_device_tracking.html

Now if you want to keep it, here is the solution to fix the duplicate problem:

http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/8021x/116529-problemsolution-product-00.html

Hope it is useful

:-)

[muhsi_2015]

Hi,

I decided to keep it .

My question is    where should I  add the  ""ip device tracking probe use-svi" command , on distribution or access . access switches are l2 . all svi is configured on  distribution switch 

Thnaks

[Julio E. Moisa]

This command represent the source to send a non-RFC compliant ARP Probe through the SVI where the host is associated, so it must be configured where the SVI is created, in this case the distribution switch.

This link could be useful: http://www.cisco.com/c/en/us/support/docs/ip/address-resolution-protocol-arp/118630-technote-ipdt-00.html#anc8

Please don't forget to rate the comment if it is useful

:-)

[muhsi_2015]

Hi,

Thanks for the information .

But in distribution switch the command  IP device tracking  comand does not work 

Thanks

[andrewswanson]

I'd imagine you only have a managment SVI on the access switch. Depending on your ios version you can use the following command on the access switch:

ip device tracking probe auto-source

http://www.cisco.com/c/en/us/support/docs/ip/address-resolution-protocol-arp/118630-technote-ipdt-00.html#anc8

Did you originally use the ip device tracking probe delay 10 command on the access switch and clients still reported the duplicate error?

hth
Andy

[muhsi_2015]

Hi,

I used " ip device tracking probe delay 10 " on access switches , It solved the issue 95% , but still facing  few .

And wireless clients also facing the issue 

(wlc 5760)

 Thanks