Hi Jason, .-- My secret spy satellite informs me that at Fri, 04 Sep 2009, Olsen, Jason wrote:
> What I'm left thinking is that it would have been great if we'd had a > snapshot of our core routing table as it stood hours or even days prior > to this event occurring, so that I could compare it with our current > "broken" state, so the team could have seen that subnet in the core > table and what the next hop was for the prefix. Are there any tools > that people are using to track when/what prefixes are added/withdrawn > from their routing tables, or to pull the routing table as a whole at > regular intervals for storage/comparison purposes? As already mentioned BGPmon.net can probably do what you're looking for. It will sent you a notification in cases of interesting path changes, possible hijacks, new adjacencies and new prefixes. It will also notify you when 'many' peers see a withdrawal of your prefix. This last feature might be useful for you. I'm currently also testing a new feature that basically compares yesterday's routing table with todays table. If there are any 'interesting' changes they will be emailed to you. You can think of this as a rancid for routing tables changes. I can include you in testing if you want to. All of this does assume that your prefixes are globally visible though. Cheers, Andree