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Multihoming (Multi-Homed)

The 19th Floor Network operations center links to multiple independent upstream providers located in physical location spread out far enough from each other so that all upstreams can not be severed at the same time through fault of location catastrophe. Routers and switches are positioned such that no single piece of network hardware controls all network access to the entire network. In particular, connection to the Internet is achieved over multiple network interfaces, each connected to a separate router or switch. The elimination of a single point of failure is achieved by duplicating each mission critical component that could potentially fail, resulting in a redundant, high-availability network.

BGP4 Routing

The Border Gateway Protocol (BGP) is the core routing protocol of the Internet. It works by maintaining a table of IP networks or 'prefixes' which designate network reachability among autonomous systems (AS). It is a path vector protocol and makes routing decisions based on path, network policies and/or rule sets. Using BGP4, the 19th Floor Network ensures that IP data is delivered to and from your servers using the fastest possible route. If any upstream or peer fail, the redundant design of the protocol ensures that packets are routed using an alternative path and service is uninterrupted.

DNS Hosting

DNS servers are deployed in a mirrored respect, respecting the redundant architecture design and eliminating it as a potential point of failure. All DNS systems are kept behind secure firewalls, are load-balance for maximum availability, and run at less than 50% at any given time. If utilization or it's resources exceeds 50% for a total of 30 minutes during a week, additional resources are put in place to increase maximum capacity.

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