ccna certification online course

ccna certification online course.This experiment is highly recommended to be completed using CiscoPacketTracer software to get a clear view of the packet structure. The configuration of this experiment is described in subsequent chapters and focuses here only on the packet encapsulation, decapsulation, and forwarding process by the router. This experiment was done in the Cisco PacketTracer? 1 environment, assuming that the ARP tables of all computers and routers are empty. Tip: Computers can use the arp -d command to clear the ARP cache table entries, and routers can use the clear arp command to clear the ARP cache table entries.The packet arrives at the server Server! from computer PC1 as described below.1 Execute the ping172.16.2.100 command on PC1±. At this time, PC1 first determines that the destination IP address and the local IP address are not in the same network segment, so it sends an ARP request to the gateway (172.16.1.1), and this packet is a Layer 2 broadcast packet with the following Layer 2 address information.Source MAC address Destination MAC address Type0060.3E37.BC77 FFFF.FFFF.FFFF 0x0806Router R1 receives the ARP request packet and replies with a unicast ARP reply packet with the following Layer 2 address information:0090.0c42.7b01 0060.3E37.BC77 0x0806After PC1 receives the ARP reply from router R1, it updates its own ARP table, at which time PC1's ARP table is as follows: C:\>arp -aInternet Address Physical Address Type172.16.1.1 0090.0c42.7b01 dynamic