U Commands

This chapter describes the Cisco Nexus 1000V commands that begin with the letter U.

use-vrf

To specify the virtual routing and forwarding instance (VRF) to use to contact this server group, use the use-vrf command.

use-vrf vrf-name

Syntax Description

vrf-name

Name of the VRF to use to contact this server group.


Defaults

None

Command Modes

RADIUS server group configuration submode for the specified group (config-radius)

Supported User Roles

network-admin
network-operator

Command History

Release
Modification

4.0(4)SV1(1)

This command was introduced.


Examples

This example shows how to specify the VRF to use to contact the server group called management: 

n1000v# configure terminal

n1000v(config)# aaa group server radius fred

n1000v(config-radius)# use-vrf management

n1000v(config-radius)#

Related Commands

Command
Description

aaa group server tacacs+

Creates a TACACS+ server group with the specified name and puts you into the TACACS+ configuration mode for that group.

aaa group server radius

Creates a RADIUS server group and enters the RADIUS server group configuration submode for that group.

server

Configures the RADIUS server as a member of the RADIUS server group.

deadtime

Configures the monitoring dead time.

show radius-server groups

Displays the RADIUS server group configuration.


username

To create and configure a user account, use the username command. To remove a user account, use the no form of this command.

username user-id  [expire date [past] ]  [password [0 | 5] password]  [role role-name]  [ sshkey {file uri | key }]

no username user-id [ role role-name]

Syntax Description

user-id

User identifier, a case-sensitive, alphanumeric character string with a maximum length of 28 characters.

Note The following characters are not permitted in usernames:

#
@

expire date

(Optional) The expiration date for the user account in the format:
YYYY-MM-DD.

password

(Optional) Specifies a password for the account. The default is no password.

0

(Optional) Specifies that the password is in clear text. Clear text passwords are encrypted before they are saved to the running configuration.\

5

(Optional) Specifies that the password is in encrypted format. Encrypted passwords are not changed before they are saved to the running configuration.

password

Password string. The password is alphanumeric, case sensitive, and has a maximum of 64 characters.

Note Clear text passwords cannot contain dollar signs ($) or spaces anywhere in the password. Also, they cannot include these special characters at the beginning of the password: quotation marks
(" or '), vertical bars (|), or right angle brackets (>).

role role-name

(Optional) Specifies the user role. The role-name is case sensitive.

sshkey

(Optional) Specifies an SSH key for the user account.

key

SSH public key string.

file filename

Specifies the location of the file that contains the SSH public key string.

bootflash: file containing host public key for the user

volatile: file containing host public key for the user


Defaults

No expiration date, password, or SSH key.

The default role is the network-operator user role.

Command Modes

Global configuration (config)

Supported User Roles

network-admin
network-operator

Command History

Release
Modification

4.0(4)SV1(1)

This command was introduced.


Usage Guidelines

You cannot delete the default admin user role.

You cannot change the expiration date for the the default admin user role.

You cannot remove the network-admin role for the default admin user role.

In you have enabled password-strength checking, you can only assign strong passwords. The following are the characteristics of a strong password:

•At least eight characters long

•Does not contain many consecutive characters (such as "abcd")

•Does not contain many repeating characters (such as "aaabbb")

•Does not contain dictionary words

•Does not contain proper names

•Contains both uppercase and lowercase characters

•Contains numbers

Caution If you do not specify a password for the user account, the user might not be able to log in.

Examples

This example shows how to create a user account with a password and a user role: 

n1000v# config t

n1000v(config)# username user1 password Ci5co321 role network-admin

 
   
 
    
   
 This example shows how to configure the SSH key for a user account: 
 
    
   
 
    
n1000v# config t

 
   
 
    
   
 
    
n1000v(config)# username user1 sshkey file bootflash:key_file

 
   
 
    
   
 
    
 
   
 
    
   
 Related Commands
 
   
 
    
 
      
      
      
 
        
        

          Command 
        
 		 
        
        

          Description 
        
 		 
      
 
      
 
       
 password strength-check 
 		 
       
 Checks the password security strength. 
 		 
      
 
      
 
       
 show user-account 
 		 
       
 Displays the user account configuration. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
    
     
    
    
   
 username admin password 
 
    
   
 To change the network admin password in the running configuration, use the username admin password command. 
 
    
    
   
username admin password [new-password] 
 
    
   
 Syntax Description
 
   
 
    
 
      
      
      
 
       
 new-password 
 		 
       
 (Optional) Password string, which is alphanumeric, case sensitive, and has a maximum of 64 characters. 
 		 
      
 
      
    
 
   
 
   
 
   
 
 
    
   
 Defaults 
 
    
   
 None 
 
    
   
 Command Modes 
 
    
   
 Global configuration (config) 
 
    
   

     Supported User Roles 
   
 
    
   
 network-admin 
 
    
   
 Command History
 
   
 
    
 
      
      
      
 
        
        

          Release 
        
 		 
        
        

          Modification 
        
 		 
      
 
      
 
       
 4.0(4)SV1(1) 
 		 
       
 This command was introduced. 
 		 
      
 
      
    
 
   
 
   
 
   
  
 
    
   
 Examples 
 
    
   
 This example shows how to change the network admin password in the running configuration: 
 
    
   
 
    
n1000v# config t

 
   
 
    
   
 
    
n1000v(config)# username admin password <new-password>

 
   
 
    
   
 
    
n1000v(config)# 

 
   
 
    
   
 Related Commands
 
   
 
    
 
      
      
      
 
        
        

          Command 
        
 		 
        
        

          Description 
        
 		 
      
 
      
 
       
 username 
 		 
       
 Creates and configures a user account. 
 		 
      
 
      
 
       
 show user-account 
 		 
       
 Displays usernames and their roles.