As a result of living in the age of the quickly moving Web, getting an usually ON broadband connection at house has turn into desirable. For example, a Pc in Creating C would send an ARP broadcast intended to resolve a MAC address for a further Pc in developing C but all of the systems in Buildings A and B and the data center would also see it. Multiply this by every Computer in the enterprise and you’d have a lot of broadcast activity more than the entire network.
The sending pc takes your information (your e-mail message or Web internet site request) and does the series of encapsulations primarily based on the form of network you are on. The receiving computer simply reverses the approach and de-encapsulates the received frame to extract the data you sent.
A lot of motherboards have a built in ethernet port and/or a constructed in wifi, you can pull this off with one strong layer two switch that can vlan/span and one particular router with wifi/ethernet so long as the modem can attain the router via the switch, ie: wan <> modem <> switch <> router <> Computer/other-devices.
The IP settings tab offers the selection to add various IP addresses to the interface, (this is typically made use of when an IP address transition is happening from a single IP network to yet another this gives the ability to speak on both networks), several default gateways to the interface (retain in thoughts that every new network will require a matching gateway which is reachable from that network) and the configuration of a metric for the interface.
The most prevalent explanation for this is that the remote system doesn’t have a route in its routing table to the network your technique (the ECHO sending program) is on. As a result, the remote system is trying to reply but either it doesn’t know where to send the replies, or it is sending them but out of the incorrect interface (which can occur if the replying program has a number of NICs, but bear in mind that your program sees a connected modem as the ppp0 interface, essentially another NIC).