Patent ID: 8289856

Claim:
A method for generating multiple BGP session flapping alarms for routers deployed in an Autonomous System (AS) network comprising: receiving a BGP session â€œdownâ€ alarm at a first router from a second router in the AS network; starting a session â€œupâ€ count for the BGP session between the first and second routers and starting a flap time period P; if a BGP session â€œupâ€ alarm is received by the first router from the second router within the flap time period P, starting a flapping count for the first router with one flap registered and starting a predetermined flapping time period Q; counting every flap the first router experiences with each router that the first router has a link with in the AS network; and comparing the flap count to a predetermined alarm threshold N, wherein N is a number of flaps, and if the first router experiences N number of flaps from all first router BGP sessions within the flapping time period Q, generating a multiple session flapping alarm for the first router.