[swinog] routing protocols between isp and customer?

Hey All 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 -- Best regards, Roman Hochuli Operations Manager nexellent ag Saegereistrasse 33 CH-8152 Glattbrugg Phone: +41 44 872 20 00 Fax: +41 44 872 20 01 URL: www.nexellent.ch X-NCC-RegID: ch.nexellent Imagination is the one weapon in the war against reality. -- Jules de Gaultier