A core router is a router designed to operate in the Internet backbone,
or core. To fulfill this role, a router must be able to support multiple
telecommunications interfaces of the highest speed in use in the core
Internet and must be able to forward IP packets at full speed on all of
them. It must also support the routing protocols being used in the core.
A core router is distinct from an edge router: edge routers sit at the
edge of a backbone network and connect to core routers.
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