If they are following proper protocols you have to tell your upstream
what netblocks you are going to advertise to them, they verify this and
write route-maps/filters to allow this through. They then contact their
upstream and tell them the same thing. Repeat this up the chain. It's
one of the very few protections BGP has.
Justin
-----Original Message-----
From: Roger Howard <g5inter...@gmail.com>
Reply-To: <ro...@g5i.net>, WISPA General List <wireless@wispa.org>
Date: Fri, 27 Jan 2012 10:56:34 -0600
To: <wireless@wispa.org>
Subject: Re: [WISPA] Advertising ARIN IPs via BGP
>This is the way it looked to me, too. I just asked the guy at
>Windstream who is dealing with it. He said...
>
>"Windstream has two Tier 1 providers, Level 3 and AT & T . This allows
>us to have two separate drains to the internet backbone. These two
>providers have two separate processes for setting up the BGP sessions.
> The level 3 has been completed and we are still waiting on the AT & T
>piece to be completed."
>
>That just seems really odd to me. Surely they peer with dozens of big
>providers? Do I know nothing about the way BGP works? (which is quite
>possible).
>
>http://bgp.he.net/AS7029#_graph4
>
>Also, we have an AT&T circuit, running BGP. Surely anything going to
>AT&T's AS# would come in via our AT&T circuit anyway. So how does
>Windstream advertising our block out via AT&T help bring traffic in
>via our Windstream circuit? And by the way, our old IP blocks which
>were handed to us by AT&T, are working fine and the majority of
>traffic is coming in via windstream to those. So whatever they are
>doing apparently works. Just seems really strange.
>
>On Thu, Jan 26, 2012 at 11:23 PM, Andrew W. Smith
><andrew.sm...@corp.airmail.net> wrote:
>>
>> This should have nothing to do with AT&T. It sounds like Windstream has
>> incorrectly assumed that you are trying to announce something
>> owned/controlled by AT&T, or did you also ask them to allow your AT&T
>>/24s
>> through as well? If so, you might be able to get them to allow the ARIN
>>/21
>> before processing the AT&T /24s.
>>
>> Perhaps forwarding them the results of an ARIN whois showing you fully
>>in
>> control of that prefix could help?
>>
>> Sorry I couldn't help more than confirming that it doesn't appear that
>> you've set anything up incorrectly with AT&T.
>>
>>
>> On 1/26/2012 9:00 PM, Roger Howard wrote:
>>>
>>> Two months ago, we received a /21 direct allocation of IPv4 addresses
>>>from
>>> ARIN.
>>>
>>> We have two geographically diverse upstream providers. One is AT&T.
>>> The other is Windstream.
>>>
>>> The Windstream circuit is considerably cheaper per meg, than the AT&T
>>> circuit. We are wanting to do away with AT&T.
>>>
>>> After receiving the IP allocation, we added it to our BGP configs, and
>>> contacted AT&T and Windstream to have the block advertised out to the
>>> Internet. AT&T got it dealt with within a few days and traffic to
>>> those IPs started flowing in. Windstream we have been fighting with
>>> for two+ months to get it done.
>>>
>>> It's costing us thousands of dollars per month, since we can't do away
>>> with the AT&T circuit until Windstream bring traffic in via their
>>> circuit to these IPs.
>>>
>>> Windstream say they are awaiting on AT&T in order to be able to
>>> advertise them. Can anyone explain to me why this could be the case?
>>> What does AT&T have to do with weather I can advertise an IP block via
>>> windstream or not?
>>>
>>> Thanks,
>>> Roger
>>>
>>>
>>>
>>>
>>>------------------------------------------------------------------------
>>>--------
>>> WISPA Wants You! Join today!
>>> http://signup.wispa.org/
>>>
>>>
>>>------------------------------------------------------------------------
>>>--------
>>>
>>> WISPA Wireless List: wireless@wispa.org
>>>
>>> Subscribe/Unsubscribe:
>>> http://lists.wispa.org/mailman/listinfo/wireless
>>>
>>> Archives: http://lists.wispa.org/pipermail/wireless/
>>
>>
>
>
>--------------------------------------------------------------------------
>------
>WISPA Wants You! Join today!
>http://signup.wispa.org/
>--------------------------------------------------------------------------
>------
>
>WISPA Wireless List: wireless@wispa.org
>
>Subscribe/Unsubscribe:
>http://lists.wispa.org/mailman/listinfo/wireless
>
>Archives: http://lists.wispa.org/pipermail/wireless/
>
--------------------------------------------------------------------------------
WISPA Wants You! Join today!
http://signup.wispa.org/
--------------------------------------------------------------------------------
WISPA Wireless List: wireless@wispa.org
Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless
Archives: http://lists.wispa.org/pipermail/wireless/
