Most of the tools I have seen have basically done a show ip bgp collected the whole table and parsed it. I know I wrote a tool like

Depends on how much info you want. There is obviously more info in the network then outside. If you want to look at things in a confederated environment like how many routes are coming from each confederation, you need to be in the network. Same thing if you want to do any analysis on any attribute that doesn't cross an EBGP border. I think ideally it is preferable to be outside the network so you're not taxing a live box, but sometimes if you want the purest picture there is a reason to get it from in the network. Whether the box is in or out of the network the basic premise is still the same, get the table out, and parse away. -----Original Message----- From: Jeff S Wheeler [mailto:jsw@five-elements.com] Sent: Friday, August 23, 2002 3:34 PM To: nanog@merit.edu Subject: RE: Measuring BGP routes On Fri, 2002-08-23 at 15:05, Frank Scalzo wrote: *edited for length* that Is there any reason this is preferable to establishing an eBGP multihop session with the box and receiving the information by that means? -- Jeff S Wheeler <jsw@five-elements.com>