invalid ssh key after config restore

[aloeffle]

Dear all.

ssh is not working after restore a previously saved config.

1. save config new.cfg
2. unconfigure switch all
3. use configuration new.cfg
4 reboot

The configuration is loaded successful and complete, but ssh is not working anymore. Connection error.

checking "show management" show me an invalid ssh key.

X460G2-24p-10G4.3 # show management

...
SSH access : Disabled (Key invalid, tcp port 22 vr all)
: Secure-Mode : Off
: Access Profile : not set
SSH2 idle time : 60 minutes
...

I need to renew the key by "configure ssh2 key"

Any Idea how to fix it?

Thanks
Alex

[aloeffle]

Hi Steven.

we run 22.2.x on all of our devices...

thx

Alex

[Steven_Lin]

Hello Alex,
If your switch is running at 16.2 or 21.3, then it was possible trigger below CR.There is workaround from below article if you really hit it.

https://gtacknowledge.extremenetworks.com/articles/Solution/Switch-gets-into-reboot-loop-if-configur...

[Alexandr_P]

Hello!

1
https://gtacknowledge.extremenetworks.com/articles/Q_A/Will-SSH-is-enabled-by-uploading-the-configur...

2
https://gtacknowledge.extremenetworks.com/articles/How_To/Install-SSH-Key/

Thank you!