Device Tracking probe with "auto-source" keyword...

[rezaalikhani]

Hi all;

Based on Cisco's documents, when using "auto-source" keyword for Device Tracking probilng operation, the following sequence of events occur:

1. The first preference is to set the source address to the SVI, if an SVI is configured.
2. The second preference is to locate an IP-MAC binding entry in Device Tracking table, from same subnet and use that as the source address.
3. The third and last preference is to use 0.0.0.0 as the source address.

Unfortunately, I cannot understand the second operation. Can anyone explain it with some real examples?

Thanks

[MHM Cisco World]

Any entry in table that have IP same subnet of device track is use as source. 

Normal all use op1

MHM