Greetings All
I am in the process of writing a BGP class, at present I am specifically
working on a section covering dampening.
My question is "what is a flap"
The two possible answers are:
Answer one
A flap is whenever path information changes for a route. By this definition
if a route goes away, that would be a flap. When the route comes back, that
would be another flap.
So a route going away then coming back would be 2 flaps.
Answer two
A flap is a route transition from up to down back to up. So a route going
away then coming back would count as one flap.
I am mucking with this in my lab and the lab would seem to indicate that
answer two is the correct one, but when I read the Sam Halabi copyright
1997 internet routing architectures book, page 440 and 441 it says the
answer is Answer one.
I am at best confused
Any help?
Tom Pruneau
Trainer Network Operations
GENUITY
3 Van de Graff Drive Burlington Ma. 01803
24 Hr. Network Operations Center 800-436-8489
If you need to get a hold of me my hours are 8AM-4PM ET Mon-Fri
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