When syslog message processing is enabled for BGP, Network Protocol Manager for BGP obtains configuration, change, and BGP session status information for the managed devices from syslog messages that are sent by the devices. Network Protocol Manager for BGP 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 BGP, but not required, because Network Protocol Manager for BGP polls the network for status information. However, if neither syslog messages nor SNMP traps are received by Network Protocol Manager for BGP, 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).
