21 Responses to “VLAN Database Lost When Restarting? – Saving VLAN.dat To NVRam”

1. elsayed
   December 11th, 2008 at 3:57 pm

   when i save gns3 routers toplogy , and load it again ,i lost the all configration.
   how can i solve this problm?

2. LBSources
   December 11th, 2008 at 4:01 pm

   @elsayed make sure you have a working directory specified and use “copy running-config startup-config” often. Or create a new Project from the package provided. That will create a working directory for you specific to the topology. You should though always save your configs often.

3. Baim
   December 21st, 2008 at 9:12 am

   wow now i can add more vlan….

4. joy
   February 17th, 2009 at 6:36 am

   Hi

   I tried cisco switch images with Gnome. But none of them are working. i want to know does gnome supports switches,if so kindly send me the working image link for download. Thank you in Advance

5. Jallebi
   February 18th, 2009 at 8:11 am

   Hi

   I am using GNS Live CD running on my laptop. I tried the above but it still erased all my VLANs. When the router reloads the VTP file command is still in my router config but the vlan.dat is not there when I issued the ‘dir nvram:’ command after the reload. Any ideas? Thanks in advance.

6. Iraj
   April 16th, 2009 at 10:26 pm

   There is a simple way. Just uncheck “Automatically clean the work directory” in “Edit\Preferences\Dynamips”. By default it is enabled and once you close GNS3, your bootflash file is deleted. It is working for me and hope it works for you.

7. wassim
   September 6th, 2009 at 10:53 am

   I did all the above but did not work. So, I made a snapshot in addition to all that. I saved with “wr mem” and with “save” under GNS3 menu, exited then rebooted lab. It worked.

8. Peter
   March 5th, 2010 at 2:02 pm

   I still have problems with saving vlans data. I use compressed IOS image, “Automatically clean the work directory” is enabled, I used the command “vtp file nvram:vlan.dat”, I successfully export nvram and cfgs before closing gns and still when I reopen my lab, nvram shows only private and startup configs files, flash is empty and nowhere I can find vlan.dat file. Any ideas ppl?

9. Kerb
   April 20th, 2010 at 8:03 am

   HI,
   I was able to set the vlan.dat file but it didnt do any good for me. I think that is not being saved in the flash because everytime I restart GNS3 I have to reconfigure my switch(es) again.

   Extra question: do I need to have the same vlan.dat file on all other swichtes?
   Is this happening because I’m using a SW16 Module on a router 2600 slot?

   Thanks,

   Kerb

10. abbas
    May 7th, 2010 at 7:04 am

    i want to make vlan through the help of gns how is it possible

11. pkaione
    July 28th, 2010 at 10:35 am

    Thanks for the Post. This works for me: “Iraj
    April 16th, 2009 at 10:26 pm
    There is a simple way. Just uncheck “Automatically clean the work directory” in “Edit\Preferences\Dynamips”. By default it is enabled and once you close GNS3, your bootflash file is deleted. It is working for me and hope it works for you. “

12. Pust
    December 16th, 2010 at 3:05 pm

    Helpful point of view. Keep it up.

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20. Andy
    November 29th, 2011 at 6:00 am

    This does work,
    Is it for a specific model or firmware but even after doing this everytime I reload i have to rebuild the VLANS.

21. Andy
    November 29th, 2011 at 6:01 am

    Sorry meant it doesnt work

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