Syslog messages processed for BGP monitoring

When syslog message processing is enabled for BGP,
obtains configuration, change, and BGP session status information for the managed devices from syslog messages that are sent by the devices.
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
polls the network for status information. However, if neither syslog messages nor SNMP traps are received by
, 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).