BGP analyzing tool

Jon Lyons jlyons30 at
Mon Nov 27 17:38:02 UTC 2006

I use the FCP from internap...Optomizes the BGP routes and produces nice graphs/reports that I never look at... :)

Doug Marschke <doug at> wrote:        v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);}                     I don’t know of any tool, but it seems like you should be able to get a show route detail about, write a script to choose inactive reasons and sort based off that.
  From: Kanagaraj Krishna [mailto:kanagaraj at] 
 Sent: Tuesday, November 21, 2006 6:57 PM
 To: Doug Marschke
 Cc: nanog at
 Subject: Re: BGP analyzing tool
    Using cli like "sh ip bgp"[Cisco] or "sh route protocol bgp detail" [Juniper] would be able to show me details for specific destinations. What i need is a software to get all the data from a routers routing table, analyze the best path and summarize the reason why its being chosen based on the BGP algorithm (local pref, no. of hops, MED, etc). That would show the big picture of why a certain upstream is more prefered than the other. Thanks.
      ----- Original Message ----- 
    From: Doug Marschke 
    To: 'Kanagaraj Krishna' 
    Sent: Wednesday, November 22, 2006 10:09 AM
    Subject: RE: BGP analyzing tool
  What kind of router?  A juniper will show you this with a show route detail.
 -----Original Message-----
 From: owner-nanog at [mailto:owner-nanog at] On Behalf Of
 Kanagaraj Krishna
 Sent: Tuesday, November 21, 2006 6:27 AM
 To: nanog at
 Subject: Re: BGP analyzing tool
    Are there any available BGP analyzing tool that can be used to identify 
 details on best chosen path based on the BGP algorithm? NTOP can capture the
 traffic info, but to analyze each destination to find the reason for
 (local preference, no of AS hops, iBGP vs eBGP etc) would be hard. I need
 info to understand why a certain upstream is being more prefered than the 
 others. Thanks.

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