ccna 200-301 network simulator tools to grow

ccna 200-301 network simulator tools to grow.2 If Computer A finds the MAC address corresponding to 192.168.1.3 in the local cache, Computer A uses this MAC address to encapsulate the frame and sends it out.3If Computer A does not find the MAC address corresponding to 192.168.1.3 in the local cache, Computer A sends an ARP query packet (ARPRequest).The source IP address in the ARP query packet is Computer A's IP address 192.168.1.2,the destination IP address is Computer B's IP address 192.168.13,the source MAC address is Computer A's MAC address 00-1B-24-7D.25-02, and the destination MAC address in the ARP query packet is the broadcast MAC address FF-FF-FF-FF-FF-FFo Computer A sends the ARP query packet out as a broadcast after it is encapsulated.4 Computer B and Computer C both receive this broadcast packet, Computer B and Computer C decapsulate the packet, Computer B and Computer C discover that the destination MAC in the data frame is not the MAC address of the local NIC, but the broadcast MAC address, Computer B and Computer C decapsulate the frame and pass the packet to the network layer. Computer C examines the packet\30and finds that the destination IP address is 192.168.1.3, which is different from the local machine. Computer C abandons further processing of the packet, while adding or updating the MAC address entry corresponding to 192.168.1.2 in the local cache. Computer B checks the destination IP address in the packet and finds that the destination IP address is 192.168.1.3, which is the same as the local machine. Computer B adds or updates the MAC address entry corresponding to 192.168.1.2 in the local cache.Computer B finds that the ARP query packet is asking for the MAC address corresponding to the local IP address, and Computer B sends back an ARP Reply packet. The ARP reply packet is sent out as a unicast.If it is a hub-connected network, both Computer A and Computer C receive this ARP reply packet; if it is a switch-connected network, only Computer A can receive this ARP reply packet because the switch can forward it based on the destination MAC address. Computer C compares the destination MAC address of the data frame and finds that it is different from that of the local computer, and Computer C discards the packet. Computer A receives this ARP reply packet and can obtain the corresponding MAC address of Computer B.7 Once Computer A obtains the MAC address of Computer B, Computer A can send other data to Computer B. As you can see from the above explanation, ARP request packets are broadcast packets, while ARP reply packets are unicast packets. Readers who want to be informed of the same local area192.168.1.2 192.168.1.3 network, you can first ping the IP address of the computer, and then make 00-1B-24-7D-25^02 00-1B-24-7D-25-03AQ