After implementation, Avaya Aura® Session Manager (SM) replication status is Not Polling, and both replica nodes are not reachable. The network connectivity has been verified, although Avaya Aura® Sys

After implementation, Avaya Aura® Session Manager (SM) replication status is Not Polling, and both replica nodes are not reachable. The network connectivity has been verified, although Avaya Aura® System Manager (SMGR) cannot connect to SM, but can connect other network components. Based on an analysis of what is working and not working, where should the administrator try to isolate the issue?