Re: question about bgp incremental updates

2014-08-04 Thread arbor.net
On Aug 4, 2014, at 9:29 AM, Song Li refresh.ls...@gmail.com 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

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

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)