![]() ![]() APC 5M (works as an AP), which has the IP 192.168.1.67, responds with a result that is sent to 192.168.1.66. Tell it to 192.168.1.66” (this is APC 5M’s IP remember that the Client was 192.168.1.5, so it is changed now).ģ. APC 5M (works as a STA) sees the ARP request and forwards the broadcast onto the wireless network as “What is the MAC address of 192.168.1.67. This is a broadcast ARP request over wired Ethernet.Ģ. The Client PC asks what the MAC address of 192.168.1.67 is and asks to tell this to 192.168.1.5. It does this to both sides of the bridge.ġ. Then, when it receives the frames for the IP addresses on the wireless network, it forwards them through. Instead of passing back the real MAC (which lives on the wireless network), the router gives its own wired MAC address. When the response comes back, it mangles that too. If something on the wired side of the router makes an ARP request for the MAC address of an IP on the wireless side, then the router forwards the request as if it came from the router. Instead of translating the IP address, the router translates between the MAC hardware address on its side. The principle of ARPNAT is similar to NAT regarding IP networks, except that NAT works one layer deeper. In the OSI model, bridging acts in the first two layers, below the network layer. The result is a faster and quieter network with less collisions. The job of the bridge is to examine the destination of the data packets one at a time and to decide whether or not to pass the packets to the other side of the Ethernet segment. A bridge is a device that separates two or more network segments within one logical network (e.g.
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