Exam 300-620 topic 1 question 193 discussion

Endpoint movement and bounce entries There are several scenarios in which an endpoint moves between two Cisco ACI leaf switches, such as a failover event or a virtual machine migration in a hypervisor environment. Cisco ACI data-plane endpoint learning detects these events quickly and updates the Cisco ACI endpoint database on a new leaf. In addition to data-plane learning, Cisco ACI uses bounce entries to manage the old endpoint information on the original leaf. When a new local endpoint is detected on a leaf, the leaf updates the COOP database on spine switches with its new local endpoint. If the COOP database has already learned the same endpoint from another leaf, COOP will recognize this event as an endpoint move and report this move to the original leaf that contained the old endpoint information. The old leaf that receives this notification will delete its old endpoint entry and create a bounce entry, which will point to the new leaf. A bounce entry is basically a remote endpoint created by COOP communication instead of data-plane learning.