Hello all, I am an Network Operator working in an Enterprise environment with offices all over the country(mostly connected via MPLS). We are currently working towards building a Disaster Recovery Site that will host some of our vendor routers and provide the capability to access these vendors from both our primary and backup data center locations. The routes(as advertised by the vendor's routers) will be the same at both locations. I would like to advertise the routes from multiple locations at the same time, rather than suppress the routes and advertise conditionally.
What is the best method to Instruct the provider's network to prefer the Primary Data Center routes over the DR site? Keep in mind that I am only peering with the provider over BGP and I have no visibility to the underlying MPLS architecture or configuration. Although if you have specific questions about their architecture, I can work to get answers. Discussing in house, we have gone over a few different options: -Advertise specific routes from primary site and summary routes from the DR site. Most specific will always be chosen. -Prepend the routes from the DR site so that they will have a longer AS-path than the Primary location -Use Community Strings to influence local preference.(Still working to find out if Provider will pass our community strings) Just looking for some ideas and best practices. Any thoughts or insight would be much welcomed and appreciated. This is my first message on NANOG, so please be gentle. I apologize in advance if I have done something incorrectly. Wes ________________________________ ************************************************************************************************** Sterne Agee Group, Inc. and its subsidiaries request that you do not transmit orders and instructions regarding your Sterne Agee account by e-mail. Transactional details do not supersede normal trade confirmations or statements. The information contained in this transmission is privileged and confidential. It is intended for the use of the individual or entity named above. The information contained herein is based on sources we believe reliable but is not considered all-inclusive. Opinions are our current opinions only and are subject to change without notice. Offerings are subject to prior sale and/or change in price. Prices, quotes, rates and yields are subject to change without notice. Sterne Agee & Leach, Inc. member FINRA and SIPC, is a registered broker-dealer subsidiary of Sterne Agee Group, Inc. Generally, investments are NOT FDIC INSURED, NOT BANK GUARANTEED, and MAY LOSE VALUE. Please contact your Financial Advisor with information regarding specific investments. Sterne Agee reserves the right to monitor all electronic correspondence. **************************************************************************************************
