Error after upgrade Nexus 7706- dcos_ssh: Could not resolve hostname

[Pegasusxl666]

Hi everyone

I  just upgraded the Nexus 7706 from version 8.2.1 to 8.2.6 successfully but I noticed that after that I can't use the SSH service. Previously I used this command to connect to other switches ssh   amendoza@192.168.1.200 SOurce-IP 10.10.50.1 right now using it for any switch I get the error message: "dcos_ssh: Could not resolve hostname : host nor service provided, or not known"
Could you help me what may be happening or if someone has already gone through this, thank you very much

[Georg Pauwen]

Hello,

try and toggle the feature ssh:

--> no feature ssh

--> feature ssh

What SSH keys do you have configured (e.g. IETF SECSH Format/OpenSSH Format) ?

Try and create a new user (or delete the old user and recreate it) with the respective SSH key.

[Pegasusxl666]

Hi @Georg Pauwen 

This is the actual config ssh of Nexus 7706

show ssh server

"ssh version 2 is enabled"

show ssh key

rsa Keys generated:Fri Nov 17 21:31:14 2017

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDQHKoMBXTKYYBlAIRud4s0s04r9yx67t4IcAflsmIGFEyyIxcIWRshX9X8bAQbuNiqc753ws4ysVx
Gb8D9ii5K+5HEKyJHaMveH27/Qad6EsZ7Lnt/+lZciskk+AIpHbUIZmRbCnxJM53P+YQ1ae1o/RaMgQUClDc9tggWBp6aVw==

bitcount:1024
fingerprint:
SHA256:M163jJ5pfRqLy6CtbwOLiDfXawGfcRFQhiDPq5D1GqA

If I disable the ssh feature will I lose the current ssh connection?

[Georg Pauwen]

Hello,

by all means, only change anything when you are console connected. Otherwise you will lose connectivity.

[Pegasusxl666]

This is a VDC number 2

Can I do the change from Vdc 1 (admin) without lose the connection?

[Georg Pauwen]

Hello,

only change anything when you are connected to the console of the Nexus. Any remote connection might get terminated when you change the keys.

[Pegasusxl666]

Hi @Georg Pauwen 

I disabled and enabling with new keys of SSH but the same error, do you have another suggestion?

(config)# ssh key RSa 2048 force
deleting old rsa key.....
generating rsa key(2048 bits).....

feature ssh

# ssh alvarez@10.10.22.100 source-ip 10.11.183.130
dcos_ssh: Could not resolve hostname : host nor service provided, or not known

Thanks