nanog mailing list archives
Re: request for help w/ ATT and terminology
From: Heather Schiller <heather.schiller () verizonbusiness com>
Date: Thu, 17 Jan 2008 14:46:11 -0500
Leo is referring to RFC 2270. Providers can get an ASN to use for customers who want to be multihomed only to them. It's likely ATT has such an ASN that you could use.
http://www.ietf.org/rfc/rfc2270.txt --Heather ~*~*~*~*~*~*~*~*~*~*~*~ Heather Schiller Customer Security IP Address Management 1.800.900.0241 ~*~*~*~*~*~*~*~*~*~*~*~ Leo Bicknell wrote:
Some networks (of note, the larger ones) have registered a "customer ASN". The idea is that networks advertised from their backbone ASN should only be the ones they own, and all customers who have no ASN use the customer ASN to originate their block. In most cases the contract prohibits using the customer ASN with another provider; it is only to be used to single home to the one network. I have no personal experience with AT&T in this configuration, but with several other networks they would prefer an eBGP session where they send you a default and you send them your prefix using the ASN they assign. Aside from keeping the prefixes segregated by ASN it also makes the routing policy a lot simpler. Typically things announced by the backbone ASN may appear in prefix lists across the network, while the customer ASN is "just another session". One of the more interesting "big network" problems is the front line support tend to not be creative thinkers, and also tend to believe their internal terminology is industry standard speak. This can make it difficult to get what you want.
Current thread:
- request for help w/ ATT and terminology Mike Donahue (Jan 16)
- Re: request for help w/ ATT and terminology Patrick W. Gilmore (Jan 16)
- RE: request for help w/ ATT and terminology Scott Berkman (Jan 16)
- Re: request for help w/ ATT and terminology Leo Bicknell (Jan 16)
- Re: request for help w/ ATT and terminology Heather Schiller (Jan 17)
- Re: request for help w/ ATT and terminology Kevin Loch (Jan 16)
- Re: request for help w/ ATT and terminology Tony Li (Jan 16)
- Re: request for help w/ ATT and terminology Jeff McAdams (Jan 17)
- Re: request for help w/ ATT and terminology Andy Davidson (Jan 19)
- Re: request for help w/ ATT and terminology William Herrin (Jan 19)
- Cost per prefix [was: request for help w/ ATT and terminology] Patrick W. Gilmore (Jan 20)
- Re: Cost per prefix [was: request for help w/ ATT and terminology] William Herrin (Jan 20)
- RE: Cost per prefix [was: request for help w/ ATT and terminology] Ben Butler (Jan 20)
- Re: Cost per prefix [was: request for help w/ ATT and terminology] Patrick W. Gilmore (Jan 20)
- RE: Cost per prefix [was: request for help w/ ATT and terminology] Ben Butler (Jan 20)
- Re: request for help w/ ATT and terminology Jeff McAdams (Jan 17)