Dear
Maurizio and Colin,
Thank you
for your responses.
It was by
mistake that I send an example where BGP messages are not coming from the same
peer. All four messages in the example were supposed to have same peer, and
announced IP address while different AS-PATH attribute.
In that
case I would have three implicit withdrawals, right?
Colin,
Are you
suggesting that if I look at five-days worth of BGP update messages and trying
to count how many implicit withdrawals during that time I have that I need to check
first appearance of every announced IP address and check if it is ‘truly’ new
announcement or possibly an implicit withdrawal that happened prior to the time
frame I am looking at?
Also, I
was completely ignoring the state change messages. Are you referring to the messages
below? I am not sure what to make out of those.
Best
regards,
Ado
TIME:
2001-9-16 00:00:09
TYPE:
BGP4MP/BGP4MP_STATE_CHANGE AFI_IP
FROM:
192.65.185.151
OLD STATE:
3 NEW STATE: 2
TIME:
2001-9-16 00:00:09
TYPE:
BGP4MP/BGP4MP_STATE_CHANGE AFI_IP
FROM:
192.65.185.151
OLD STATE:
2 NEW STATE: 3