The following limitations apply when Cisco Cisco Unified Communications Manager or Cisco Unified Presence server is down or unreachable:
Smart Call Home fails to capture the date and time of the last Call Home messages sent and the next message scheduled, until the server is reachable.
Smart Call Home does not send the Call Home messages, until the server is reachable.
Smart Call Home will be unable to capture license information in the inventory mail when the publisher is down.
The following limitations are due to Alert Manager and Collector (AMC):
If an alert occurs on node A and the primary AMC server (by default, publisher) is restarted, and if the same alert occurs within a span of 24 hours on the same node, Smart Call Home resends the alert data from node A. Smart Call Home cannot recognize the alert that has already occurred because the primary AMC was restarted.
If an alert occurs on node A and if you change the primary AMC server to another node, and if the same alert occurs within a span of 24 hours on the same node, Smart Call Home recognizes it as a fresh alert on node A and sends the alert data.
The traces that are collected on the primary AMC server may reside on the primary AMC server for a maximum of 60 hours in few scenarios.
The following are the limitations in the mixed cluster (Cisco Unified Communications Manager and IM and Presence) scenario:
If the user changes primary AMC server to IM and Presence, then Smart Call Home cannot generate Overview reports for DB Replication alert.