[117444] in North American Network Operators' Group
Re: Advertising BGP-4 from two islands
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Sun Sep 13 06:40:42 2009
From: "Patrick W. Gilmore" <patrick@ianai.net>
To: NANOG list <nanog@nanog.org>
In-Reply-To: <3c3e3fca0909122322h16ebf308meaaff631e1e7afae@mail.gmail.com>
Date: Sun, 13 Sep 2009 06:39:30 -0400
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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
>> cannot
>> extend my backbone to.
>>
>> However, this market is big enough that I can afford to put a Cisco
>> 7201
>> over 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 not
>> have 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
