Now connect S2 to PC1 with fastEthernet link. In the Local port type in the RPORT and in Remote port, type in the LPORT you noted earlier in VPCS i.e. Drag a cloud to the center, name it 192.168.1.10.
![vpcs gns3 download vpcs gns3 download](https://docs.gns3.com/img/logocolour.png)
Now connect these routers with fastEthernet links and Stop and Start them one by one After restart, you will be able to ping vlan 1's IP of one router from another one. Please note that we have not yet connected these routers. do same as above but name it S2 and give it IP 192.168.1.2 Similarly drag 3rd 3640 router, follow the same steps as above name it S3 and give it IP 192.168.1.3 Start again and console into it change its name to S1 and give its vlan 1 IP 192.168.1.1 like this: en conf t hostname S1 interface vlan 1 ip address 192.168.1.1 255.255.255.255.0 no shut exit exit write mem Now drag another 3640 router. Start and then after a while Stop the router. Right click - Configure - slots and select NM-16ESW. We need to give PC1 an IP address and default gateway by typing ip 192.168.1.10 192.168.1.2 24. Note the LPORT and RPORT numbers for PC1. At vpcs prompt, show will show all the PCS and their IPs etc. If u get an error message, copy cygwin.dll from vpcs directory to gns 3 directory replacing the one already present or renaming the old one.
![vpcs gns3 download vpcs gns3 download](http://1.bp.blogspot.com/-4MZK2Wbh-ew/Tqu1wHKiyDI/AAAAAAAAAHc/AuEA3Iw23e4/s1600/VPCS_01.png)
![vpcs gns3 download vpcs gns3 download](https://www.invialgo.com/khidhir/wp-content/uploads/2012/03/3103124wtmk-1200x720.jpg)
Extract VPCS to an easy location like c:\vpcs.
VPCS GNS3 DOWNLOAD HOW TO
In this tutorial, I will show how to setup lab in gns 3 to practice switching. I have seen that alot of people have problem setting switching lab in gns 3. Router(config)#int range fa1/0 - 15 Router(config-if-range)#switchport mode trunk Router(config-if-range)# Router#conf t Enter configuration commands, one per line.