When syslog message processing is enabled for OSPF, Network Protocol Manager for OSPF obtains configuration, change, and OSPF adjacency status information for the managed devices from syslog messages that are sent by the devices. Network Protocol Manager for OSPF extracts the information from the syslog messages and updates the attributes of the appropriate topology objects in its repository.

Processing syslog messages is recommended for OSPF, but not required, because Network Protocol Manager for OSPF polls the network for status information. However, if neither syslog messages nor SNMP traps are received by Network Protocol Manager for OSPF, immediate asynchronous notification of status change is not available; instead, the response time is determined by the length of the SNMP polling interval (240 seconds by default).