nanog mailing list archives
Re: Advertising BGP-4 from two islands
From: "Patrick W. Gilmore" <patrick () ianai net>
Date: Sun, 13 Sep 2009 06:39:30 -0400
On Sep 13, 2009, at 2:22 AM, William Herrin wrote:
On Sat, Sep 12, 2009 at 9:35 PM, Francois Menard<francois () menards ca> wrote:I have an opportunity to launch services in a remote marke, where I cannotextend my backbone to.However, this market is big enough that I can afford to put a Cisco 7201over there and peer in BGP-4.Do you have any advice as to what may happen if I advertise different blocks from the same AS number, from two different locations, one of which I do nothave my own transport facilities to...This probably qualifies as a "unique routing policy" under ARIN NRPM section 5. That allows you to get another AS number.
Why burn an ASN? There is no need. With "neighbor $FOO allowas-in", you can even see your own prefixes.
You could also get a small block of staticly-routed IPs from your ISPs in each location and use them to anchor a VPN (e.g. a GRE tunnel). That'd have the effect of extending your backbone.
Another useful suggestion. Hell, don't even need GRE tunnels - who said all your IP space had to be in your personal ASN?
-- TTFN, patrick
Current thread:
- Advertising BGP-4 from two islands Francois Menard (Sep 12)
- Re: Advertising BGP-4 from two islands William Herrin (Sep 12)
- Re: Advertising BGP-4 from two islands Patrick W. Gilmore (Sep 13)
- <Possible follow-ups>
- Re: Advertising BGP-4 from two islands Fouant, Stefan (Sep 12)
- Re: Advertising BGP-4 from two islands William Herrin (Sep 12)