Features and benefits of BGPBorder Gateway Protocol

Border Gateway Protocol

Features and benefits of BGP

Thanks to the Border Gateway Protocol (BGP), Combell’s two data centres, which are connected with their own fibre optics, are combined into one single logical network.

BGP can handle a few hundreds of thousands of active routes. This is essential for optimum access to applications that must be available to the entire Internet. BGP is therefore a de facto standard for all transit providers. Combell manages its network itself on the level of routing and has perfect knowledge of BGP and many other routing protocols.

At any given time, and for each individual route, BGP searches for the fastest available link. BGP bases its routing on the fastest possible path and thus the lowest amount of ‘hops’ or intermediate points in order to reach its final destination. The routers permanently report which underlying systems are available via their route. When a route suddenly becomes unavailable, or when a faster route appears, the neighbouring routers will automatically pick the other route.

Alternatives like DNS-based redirection are bound to very short TTL (time-to-live) values, which causes excessive load on your DNS servers. Moreover, you have no guarantee whatsoever that all other DNS servers will respect these TTL values. Updates are therefore not automatically taken into account everywhere in the world. BGP offers a solution to this problem and guarantees that all updates are immediately taken into account, anywhere in the world.

Combell’s multi-data centre approach allows for very high availability guarantees. Even if a serious disaster impacts an entire data centre, your application will remain available. Both locations are connected (active-active) to our transit providers, so that performance will double in a multi-data centre setup. Another advantage of this particular architecture is for instance offsite backup.

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