I would propose BGP on CE-PE link, with some BGP community policy.
Then the customer would send you community strings which govern
local preference and announcements of those prefixes.
I made several such policy implementations based on Easynet BGP policy:
This is a very detailed document, and it covers all possible needs for an SP.
Typically you only need to implement a part of it.
----- Original Message -----
From: Roman Hochuli
To: "swinog(a)swinog.ch" <swinog(a)swinog.ch>
Sent: Friday, November 2, 2012 9:56 AM
Subject: [swinog] routing protocols between isp and customer?
Quick question: do you allow/run routing protocols between your (isp-)
network and your customer?
If so: which protocols?
If not: what reasons do you tell the customer?
In particular I am interested to know about setups when they want to
announce the prefix/subnet you assigned them from your PA-space back to
you because they want to run redundant routers.
The setup would probably look like this:
Customer Subnet 10.0.0.0/27
[customer router a] - <routing protocol x> - [customer router b]
<routing protocol y> <routing protocol y>
[isp router a] - <routing protocol z> - [isp router b]
ISP Network 10.0.0.0/8
Phone: +41 44 872 20 00
Fax: +41 44 872 20 01
Imagination is the one weapon in the war
-- Jules de Gaultier
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