addition to carrying out tasks of routing, the router must be able to manage incoming and outgoing traffic. The routers use a default route instead of learning the routes in the global internet network using a routing protocol. In fact, the topology is a classic example to use a default route.
The access router has only one physical path to access the Internet network, which is through the ISP router. Instead of configuring a static manner, default address is based on the default gateway as DHCP client learned (next hop router). In this
NSRF can conduct exit packages located in soho router, but the entry process packets from the internet could be a bit confusing since public address used by the router must be in routing tables in Internet routers capable of attaining. However intenet routers should never have entries in its tables for IP addresses 'private'.
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