Hurricane Electric's International Internet backbone is ranked among the top in the world. Connections ranging from OC192, OC48, and 10GigE (10,000Mbps) form rings connecting Hurricane core routers.

Hurricane's self-healing network architecture virtually eliminates any single point of failure. In addition to their own backbone, Hurricane also purchases backup transit from multiple providers in multiple locations to ensure that your data will arrive via the shortest possible routes. Because of Hurricane's backup transit and many international peers, their network maintains the shortest routes for sending your data all over the world. On an ongoing basis, Hurricane is negotiating with the top fiber carriers for new routes, additional backup transit providers, and are signing on new peering relationships.

Hurricane Electric's network utilizes Border Gateway Protocol Version 4 (BGP4) over dark fiber and long haul wavelengths.

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The Mzima International Backbone Network

Mzima Networks has designed a completely fault-tolerant nationwide backbone network connecting to multiple Tier-1 carriers (Level3, Savvis, Telia) and hundreds of private peers to provide the highest performance and reliability to its customers. Mzima uses customized, proprietary software in combination with BGP4 routing to make on-the-fly routing decisions, constantly analyzing the many possible paths customer traffic can take. Mzima's expertise and focus is on routing and traffic delivery, allowing customers to receive the benefits of well-managed multi-homed bandwidth, as well as the additional benefits of direct private peering with end-user ISP networks.

Mzima's network features:

• Fully-redundant architecture
• Multi-gigabit backbone with over 20 Gbps of transit/peering capacity
• SONET transit connections for self-healing fault-tolerance
• Multi-layer network design
• Customized routing policies for customers
• BGP best-path routing
• Automatic detection and re-routing around network failures
• Open peering policy allowing for local data delivery
• Carrier fault-tolerance
• Non-oversubscribed bandwidth
• Quality of Service monitoring and analysis
• Denial of Service Attack (DDoS) mitigation and filtration

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The Cogent International Backbone Network

Cogent's end-to-end optical network consists of multiple metropolitan IP-over-WDM fiber rings located in Cogent's major markets throughout the United States and Europe. Cogent currently has a presence in over 86 markets throughout the United States and Europe. Cogent's network provides each building or colocenter with up to 5 Gbit/s of dedicated bandwidth. Layer 3 edge routers in each building are connected to Cisco Layer 3 Terabit core routers over two diverse optical paths. These core routers are tied together via a a multi-national backbone network consisting of multiple 10 Gbit/s DWDM optical links. With a currently implemented capacity of 80 Gbit/s in the United States and 40 Gbit/s in Europe, Cogent's multi-national IP network is the largest in the world and is scalable to a total capacity of over one Terabit.

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