[176307] in North American Network Operators' Group
RE: Multi-homing with multiple ASNs
daemon@ATHENA.MIT.EDU (Curtis L. Parish)
Mon Nov 24 10:15:03 2014
X-Original-To: nanog@nanog.org
From: "Curtis L. Parish" <Curtis.Parish@mtsu.edu>
To: "nanog@nanog.org" <nanog@nanog.org>
Date: Mon, 24 Nov 2014 15:14:31 +0000
In-Reply-To: <54723394.5000009@bogus.com>
Errors-To: nanog-bounces@nanog.org
Thanks to everyone for your input on our less than desirable BGP situation.=
=20
I do want to make sure I add that the state network we are a part of serves=
everything from elementary schools, to universities. to the traffic camer=
as on the interstate. Many of these are in rural locations and in the pa=
st each state entity had created their own network including two separate s=
tate university networks. The state vendor managed network was created t=
o save money and provide higher level services than just an ISP. Among ot=
her things it serves as the private WAN for some state agencies. As our =
internet redundancy and bandwidth demands have increased we have outgrown t=
he need for the high touch services offered by the state network but we mus=
t participate in order to maintain WAN access to other state universities. =
=20
Thanks again for the feedback.
Curtis
Curtis Parish
Senior Network Engineer
Middle Tennessee State University=20
-----Original Message-----
From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of joel jaeggli
Sent: Sunday, November 23, 2014 1:21 PM
To: mark.tinka@seacom.mu; nanog@nanog.org
Subject: Re: Multi-homing with multiple ASNs
On 11/21/14 1:07 AM, Mark Tinka wrote:
> On Friday, November 21, 2014 12:00:47 AM Curtis L. Parish
> wrote:
>=20
>> We have recently added a second ISP (third if you count I2). Our=20
>> first "ISP" is actually a private state network that peers with two=20
>> Tier 1 providers. We own an AS number and our IP space but at the=20
>> last minute learned our state network is advertising our network=20
>> 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=20
>> issue.
>=20
> Why aren't you originating your own prefixes and ASN by yourselves,=20
> since you own both?
The practical problem here is that the control of prefix origination is dis=
tributed. so if there is a need to withdraw it from the state network or ad=
vertise 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 al=
so.
> Mark.
>=20