sure, they announce a part of your PA superblock, and you route it in internal BGP, and just make sure you don't announce longer prefixes to the outside world. And this community concept is actually helping to do this in an efficient manner.
Pretty much everyone is doing that.
----- Original Message -----
From: Roman Hochuli roman.hochuli@nexellent.ch To: swinog@lists.swinog.ch Cc: Sent: Friday, November 2, 2012 11:41 AM Subject: Re: [swinog] routing protocols between isp and customer?
Hello Stan
I would propose BGP on CE-PE link, with some BGP community policy.
As far as I understand this document is talking about bgp-setups as a whole. I would be more interested to hear if they would break out a subnet out of their PA-allocation and accept that back over <insert routing protocol of choice here> from their customer.
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