When SNMP trap and syslog processing is enabled, Network Protocol Manager for BGP obtains status for the BGP-enabled devices by extracting the following information from the SNMP trap messages and syslog messages that are sent by the devices:
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Configuration status
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Change status
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Session status
SNMP traps and syslog messages are recommended but not required because Network Protocol Manager for BGP polls the BGP network for status information. However, if neither SNMP traps nor syslog messages are received by Network Protocol Manager for BGP, immediate asynchronous notification of status change is not available; rather, the response time is determined by the length of the SNMP polling interval (240 seconds by default).
By default, SNMP trap and syslog processing is disabled. The Network Protocol Manager Configuration Guide provides information about enabling trap and syslog processing and identifies the trap and syslog messages processed by Network Protocol Manager for BGP.