请求协助解决Cisco Packet Tracer子网划分网络作业问题

Got it, let’s work through your subnetting assignment in Cisco Packet Tracer together. I’ll break down the process into actionable steps so you can get your setup up and running smoothly.

Before jumping into Packet Tracer, you need to map out the core details of your subnet plan:

• Start with your original network address (e.g., 192.168.5.0/24)
• Calculate the number of subnet bits you need: If you require 6 subnets, you’ll need 3 bits (since 2^3 = 8, which covers 6 subnets with room to spare)
• Confirm host bits per subnet: Make sure the number of usable hosts (2^host_bits - 2) meets your per-subnet device count. For example, 5 host bits give you 30 usable hosts per subnet.

Let’s get the hardware connected first:

• Add routers (I recommend a Cisco 1941 for most assignments), switches (like a 2960), and PCs matching your subnet count
• Use the right cables: Connect PCs to switches with straight-through cables, and routers to switches with cross-over cables (or let Packet Tracer auto-select the correct cable type)

Hop into the router’s CLI to set up the gateway IPs for each subnet:

enable
configure terminal
# Configure first subnet interface
interface GigabitEthernet0/0
ip address 192.168.5.1 255.255.255.224  # Adjust IP/mask to match your subnet plan
no shutdown  # Don’t forget this—interfaces default to disabled!
# Configure second subnet interface
interface GigabitEthernet0/1
ip address 192.168.5.33 255.255.255.224
no shutdown
# Repeat for all subnets
exit

For each PC:

• Open the PC’s desktop > IP Configuration
• Enter the assigned IP address, subnet mask, and default gateway (the router interface IP for that subnet)
• If your assignment allows DHCP, you can set up DHCP pools on the router instead of manual PC configs:

ip dhcp pool Subnet1
network 192.168.5.0 255.255.255.224
default-router 192.168.5.1
dns-server 8.8.8.8

Test to make sure everything works:

• On a PC, open the command prompt and run ping <other-pc-ip> to check same-subnet connectivity
• Ping a PC in a different subnet to confirm the router is routing traffic correctly
• On the router, run show ip interface brief to double-check all interfaces are up and have the correct IPs

Don’t forget to save your router config when you’re done—run write memory (or copy running-config startup-config) so your settings persist if the router reboots.

内容的提问来源于stack exchange，提问作者Ardit Tobi