The router will decapsulate the frame, thus removing the source and destination MAC addresses. It will
consult its routing table to work out on which interface to send the packet which is going to 192.168.40.5:
interface FastEthernet0/2. The router will then encapsulate the packet into a new frame with its own MAC
address as the source MAC address and the MAC address of 192.168.40.5 as the destination MAC
address.
Looking at the ARP table, the MAC address for 192.168.40.5 is 0000.0c07.4320 (the one which has been
dynamically learned and has age 9 minutes). So what is the router’s MAC address on this link? The ARP
table shows a static entry (no age) for 192.168.40.1 which is 0000.0c36.6965. As it is static, we can
conclude that these are the router’s IP and MAC address.