Example of BGP session
flapping detection
BGP session flapping
detectionclarifies by example how
determines that a BGP protocol endpoint and associated BGP
session are flapping.
BGP session
flapping detection

The example assumes that the
Trap_Time_Window is 30 seconds, the Trap_Count_Threshold is 3, and the
FLAP_Clear_Window is 60 minutes.
performs the following actions:
- As soon as receives a bgpEstablished trap for the BGP protocol endpoint, it begins counting.
- When receives three or more traps within the 30-second trap time window, it considers the BGP protocol endpoint to be flapping and sets the endpoint’s IsFlapping attribute (IsFlapping = TRUE).
- continues to receive traps for 75 seconds after the initial trap, which results in a stable time of 75 seconds.
- Network Protocol Manager for BGP clears the endpoint’s IsFlapping attribute (IsFlapping = FALSE) at the end of the stable time.