In Internet routing, the default-free zone (DFZ) is the collection of all Internet routers that do not require a default route to route a packet to any destination, most commonly at the core of autonomous systems. Conceptually, DFZ routers have a "complete" Border Gateway Protocol table, sometimes referred to as the Internet routing table, global routing table or global BGP table.
In Internet routing, the default-free zone (DFZ) is the collection of all Internet routers that do not require a default route to route a packet to any destination, most commonly at the core of autonomous systems. Conceptually, DFZ routers have a "complete" Border Gateway Protocol table, sometimes referred to as the Internet routing table, global routing table or global BGP table.
Source: Wikipedia "Default-free zone" · CC BY-SA 4.0
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