The adapter listens for SNMP credential change events in Network Configuration Manager. Specifically, the password change event is inspected to determine whether the SNMP credential change involves an SNMP community string. If so, calls to change the SNMP community string in Smarts Manager are put in a queue for processing.
The reason the events are queued instead of acted upon real time, is to handle the case of SNMP credential rolls. By design, Network Configuration Manager has a credential roll feature that could result in large numbers of devices having passwords changed at the same time. However, the logistics of changing passwords in Smarts Manager can be expensive if many devices are changed on a one-off basis.
Therefore, SNMP credential changes are run in batch. At the conclusion of the batch operation, a reconfigure command is issued to IP Availability Manager to utilize the new passwords. The time interval between batch SNMP credential synchronization operations is configurable. This information can be located in “Configuring the Adapter” on page 170
Note that the Network Configuration Manager manages SNMP credentials as a single pair of one read-only password and one read-write password. In the case where an SNMP credential is modified in Network Configuration Manager in which the read-only password is set to null, the adapter will not update the Smarts Manager SNMP community string. This prevents any interruption in monitoring if Smarts Manager is using a different SNMP community string than Network Configuration Manager to monitor the device.
