[176279] in North American Network Operators' Group
Re: Multi-homing with multiple ASNs
daemon@ATHENA.MIT.EDU (joel jaeggli)
Sun Nov 23 14:21:02 2014
X-Original-To: nanog@nanog.org
Date: Sun, 23 Nov 2014 11:20:52 -0800
From: joel jaeggli <joelja@bogus.com>
To: mark.tinka@seacom.mu, nanog@nanog.org
In-Reply-To: <201411211107.50085.mark.tinka@seacom.mu>
Errors-To: nanog-bounces@nanog.org
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On 11/21/14 1:07 AM, Mark Tinka wrote:
> On Friday, November 21, 2014 12:00:47 AM Curtis L. Parish=20
> wrote:
>=20
>> We have recently added a second ISP (third if you count
>> I2). Our first "ISP" is actually a private state
>> network that peers with two Tier 1 providers. We own an
>> AS number and our IP space but at the last minute
>> learned our state network is advertising our network
>> using two different ASNs (neither ours) so they can load
>> balance their connections. If you hit the right
>> looking glass server you can see our network advertised
>> by three different ASNs. We were told by the new ISP
>> that this is a problem but the state network says it is
>> not.
>>
>> Looking for opinions and words of wisdom on this split
>> advertising issue.
>=20
> Why aren't you originating your own prefixes and ASN by=20
> yourselves, since you own both?
The practical problem here is that the control of prefix origination is
distributed. so if there is a need to withdraw it from the state network
or advertise it no export for some reason (e.g. performance problem
maintenance etc) you likely can't. Their grasp of load-balancing seems a
bit shallow also.
> Mark.
>=20
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