2- Open Putty Connection Manager .
3- Map putty.exe by selecting Tools–>Options–>Putty
4- Download PuttyCM ‘s Database from here
5- Now , you need to map default session database loaded at startup by selecting Tools–>Options–>Database , This Database file will help you to take console of 8 Devices in GNS3.
6- Make this database file as Default Database file by selecting Database –> Set as Default.
7- Now , close the PuTTy Connection Manager and start GNS3.
8- In GNS3, we need to make below settings:-
General –> Terminal Settings –> preconfigured terminal commands –> telnet(windows)
General –> Terminal Settings –> terminal command –> start C:\puttycm.exe
Check the tick at launch this command using the default shell.
9- You are now able to access devices in tabbed mode in PuTTY Connection Manager.