VDX6740 - sudden crash and lost all config... how to back to external?

[mbze430]

all of the sudden the VDX6740 just "crashed"... and it restarted itself... but after reload itself.  All the license was intact.  However, all my config is gone.

So my question is, is there a way to backup the config to an external source so if this happens again I can just restore?

when I do a #copy running-config startup-config

"This operation is not supported in logical chassis mode."

[Michael_Morey · Accepted solution]

Sorry to hear that you had this issue.

Starting with your last question; the configuration on a Logical Chassis setup is persistent and managed by the principal node.  Every time you make a config change it is automatically saved to startup and sent to the principal node so there is no need to do a "copy run start".  The great thing about this is if a device gets defaulted, when it reloads and joins the VCS fabric again, it will download the original config from the principal and recover.

Regarding backing up your config to an external location, this can be done with the "copy" command:

copy run [ftp://|scp://|sftp://|tftp://|usb://|flash://]

i.e:

VDX1# copy running-config scp://user:password@10.10.10.23//tftp/home/mmorey
2024/05/02-14:24:09, [DCM-1108], 37610, M2 | Active, INFO, VDX8770-8, Running configuration file has been uploaded successfully to the remote location.

[mbze430]

I don't know if I should open a new thread or not... but this is sort of a continuation of this.

We just had a power outage/spike... the VDX6740 got reset back to default.  Thankfully I have the running-config this time.  But I can't figure out how to copy it back to the unit.

I first tried the copy usb://running-config.txt flash://running.config.txt that didn work

I also did a 'usb on' that didn't work either...

not sure what else to try or if there is a different command to copy it back to the switch

the usb drive is formatted with FAT32

---

sw0# usb on
2025/04/03-02:08:20, [RAS-3001], 12875, SW/0 | Active, INFO, VDX6740T-1G, USB storage device plug-in detected.
2025/04/03-02:08:20, [RAS-3003], 12876, SW/0 | Active, WARNING, VDX6740T-1G, USB storage device was unplugged before it was disabled.
Trying to enable USB device. Please wait...
Fail to enable USB storage device. Error:Device is not found or not formatted

[mbze430]

Okay I figured it out and will post it here for future reference

Follow these steps here:

https://extreme-networks.my.site.com/ExtrArticleDetail?an=000085660

copy the configuration to the /brocade/config directory

plug in the usb stick to the VDX unit at the prompt:

#usb on

then type in the command:

copy usb://<filename> running-config

hope this will stick after a reboot.  Not sure if you have to type copy running-config startup-config

[mbze430]

when using usb:// does it have to be a Brocade USB drive or any will work?