Re: question about bgp incremental updates

2014-08-04 Thread Mateusz Viste
Hi, I can think of two reasons for such behavior: - one of the attributes of these routes changed suddenly, so they have been reannounced by your peer, - you sent a 'route refresh' request to this peer, asking him to reannounce all his table. Other than that, I don't see why a peer would res

Re: question about bgp incremental updates

2014-08-04 Thread arbor.net
On Aug 4, 2014, at 9:29 AM, Song Li wrote: > According to this principle, if an AS suddenly announced a lot of updates (as > below), can it be regarded as an anomaly such as BGP session reset? Yes. It's wise to monitor BGP announcements received from peers, and to investigate when large numb

question about bgp incremental updates

2014-08-03 Thread Song Li
Hi everyone, I have a question about bgp updates: BGP uses an incremental update strategy to conserve bandwidth and processing power. That is, after initial exchange of complete routing information, a pair of BGP routers exchanges only the changes to that information. ( from RFC4274) Accor