I am using windows 10 and I tried to open router console in gns3 and get this massage in console window(Connected to Dynamips VM "R1" (ID 1, type c3600) - Console port Press ENTER to get the prompt) when I pressed enter nothing is happen. no error no anything. I installed versions (GNS 0.8.6 , 1.3.13 , 1.4.6 and the last version) and used a lot of images like (3640 and c3725-advipservicesk9-mz.124-18) but the same issue is still. Is anyone faces this issue before ?????

  • Is your terminal application set to 9600 8 N 1?
    – Ron Maupin
    Jan 5, 2018 at 20:02
  • I can't get what you mean exactly for (terminal application). but I am using default terminal of GNS3 and I don't know what it is set to . Jan 5, 2018 at 20:07
  • The baud rate seems fine, you also need to deactivate flow control (no Xon/Xoff nor RTS/CTS).
    – Zac67
    Jan 5, 2018 at 20:14
  • But how to deactivate flow control ??? Jan 5, 2018 at 20:18
  • @KarimYousry There are a lot of other great console programs to use with configuring your network equipment. Personally i use TeraTerm, which today is free. With that you can specifically select to deactivate flow control.
    – user36472
    Jan 6, 2018 at 11:08

3 Answers 3


I can confirm that accepting the default RAM entry will solve this issue. I was clicking finish without an idle-pc value found. After accepting the default RAM, the wizard found an idle-pc value, and then I was able to finally connect via putty.


Yes,It is working now when I avoided default RAM editing of IOS router just let default RAM and it will work but I can't know why.Thanks DRP and all for helping.

  • You should accept your answer so that the questions doesn't keep popping up forever, looking for an answer.
    – Ron Maupin
    Jan 26, 2018 at 14:47

Maybe you can setting RAM is 256MB or 512MB on C7200

  • Please elaborate your answer somewhat. As it is, we can't tell if you're simply guessing or whether there's been some thought.
    – Zac67
    Jan 24, 2023 at 21:41

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