Advertising BGP-4 from two islands
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... F.
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. 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. Regards, Bill Herrin -- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
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
participants (3)
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Francois Menard -
Patrick W. Gilmore -
William Herrin