The network architecture in the US data center is based on Enterprise-level routing and switching engines from Juniper and Cisco. Juniper M20 routers are used as border routers. Cisco 6500 series switches are utilized in the distribution layer, Cisco 6500 switches - in the aggregation layers, and Cisco 3500/ 2900 series switches - in the customer layer. The data center offers a fully redundant network with 9 backbone providers.