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I am new to this layer of networking so I apologize if this question is a bit strange.

When running a traceroute, I get the up addresses of the route it takes. Now, I take these addresses and map the ASN number. Again being very new, how can I determine the internet backbones. Basically I want to determine programmatically if a backbone is active and responding. Perhaps I am asking the wrong question I know

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Can you expand on how you "Now, I take these addresses and map the ASN number" ? Do you have your own AS? Is this to work out if your peer AS routes are up? – Kev Dec 12 '11 at 1:15
Anything you can't get from ? – voretaq7 Dec 12 '11 at 1:25
I have my IP addresses from my traceroute and I run it through a geoip service. I guess, in the end, I am trying to figure out the whole concept of ASNs. Basically, I want to map out and get a backbone from one of my sites to my location via the backbones. Is a lower ASN number indicative of a backbone? – Paul Dec 12 '11 at 4:59
up vote 3 down vote accepted

Use the Fixed Orbit search page, enter the ASN, and it will tell you what ASNs are directly connected to it. Unfortunately, that does not understand parent/child relationships, so you see all neighbors, from small multi-homed companies, to huge "backbone" ISPs. If there are few connections, like most places have, you can often eyeball it and say "Level-3, QWest, Cogent, and AboveNet are their uplinks, and MIT and UMass are their customers".

To get some more ideas of them in a hierarchical view, you can "telnet" and run "show ip bgp IP_ADDRESS" for an IP within their range, or "show ip regex AS" to see paths that have that AS in it.

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