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Sites that require high bandwidth connections for converged voice and data applications are connected to the private network (VPN) using dedicated secure circuits. These are provisioned over fibre networks and deliver speeds from 2Mbps to 10, 34, 100, 155Mps and 1Gbps. Ethernet is normally the customer's preferred method of connection to the managed router.
These high speed VPN links are typically used for connecting larger headquarter sites or data centres and can be used for converged voice and data traffic.
Static or dynamic routing can be selected to manage the routing between the customer edge and the AlwaysON managed VPN.
Static Routing option
With static routing AlwaysON use a clustering protocol such as VRRP to advertise a single IP address as a default gateway for the customer, shared over the core routers. AlwaysON routers in the customer site will have their default route set to this address.
Dynamic Routing option
With dynamic routing, the AlwaysON routers on the customer site participates in the customer’s internal routing protocol and would also participate in a routing protocol with the AlwaysON core routers. This has the advantage that traffic will always be routed via the most efficient path, and no manual list of static routes would have to be maintained, allowing the customer to add, remove, and change address space as required. This is the routing method preferred by AlwaysON.
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