Cisco Cisco MDS 9000 SAN-OS Software Release 1.0 Technisches Handbuch

This document describes how to ssh into Cisco Multilayer Data Switch (MDS) 9000 or Nexus
Series switches without  being prompted for a Secure Shell (SSH) user password. 

We can use ssh with key-based authentication and run commands so that there are no password
prompts.

switch# ssh username@switch command

Need a current version of ssh, in this example, the ssh version on a Linux server is as follows:

$ ssh -v

, OpenSSL 0.9.8d 28 Sep 2006

The information in this document was created from the devices in a specific lab environment. All of
the devices   used in this document started with a cleared (default) configuration. If your network is
live, make sure that you   understand the potential impact of any command.

To enable this feature please perform following steps:

Step 1. SSH needs to be enabled on the MDS/Nexus switch

Step 2. You need to get the public key off the host and configure it on the MDS/Nexus switch

Options:

-v : Verbose Enabled

-b: Number of Bits for the key

-t: Type of Algorithm either DSA or RSA

$ ssh-keygen -v -b 1024 -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/users/thteoh/.ssh/id_rsa):

Enter passphrase (empty for no passphrase):

Enter same passphrase again: