Cisco Packet Tracer - 当我切换主机端口时，我失去了与交换机的连接

Question

I am stuck on this very last little piece of building a fully functioning network. I am using a Server switch which is connected to two Client switches.

I have set up Vlans and trunked where I needed to. After thinking I was done (the left side of the network) I noticed the connection between the two Client switches and each of their two corresponding Hosts arent connected. I have been trying to isolate the problem, and I believe I have.

The problem occurs immediately after I type

:- int f0/4 ( this is port which is conneted to the computer)
:-switchport mode access
:-switchport access vlan 20 ( this port will go into vlan 20 with this command)

Before:

After:

This happens again is I attempt to switchport access int f0/5 (Host2), and also with int f0/6 and f0/7.

Answer 1

You need put more details about the ports you are using in the design.

Remember you need interconnect the switches using a trunk mode ports and a subinterface tag in the router to enable the intervlan routing.