NVIDIA NVOS User Manual for NVLink Switches v25.02.2141
NVIDIA Docs Hub Homepage  NVIDIA Networking  Networking Software  Switch Software  NVIDIA NVOS User Manual for NVLink Switches v25.02.2141  User Interface Commands

On This Page

User Interface Commands

System Message

nv show system message

nv show system message

Display banner messages for different terminal session events: pre-login, post-login and post-logout messages.

Syntax Description

N/A

Default

N/A

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~nv show system message
             operational                            applied                              
-----------  -------------------------------------  -------------------------------------
pre-login    NVOS switch                            NVOS switch                          
post-login                                                                               
              ███╗   ██╗██╗   ██╗ ██████╗ ███████╗   ███╗   ██╗██╗   ██╗ ██████╗ ███████╗
              ████╗  ██║██║   ██║██╔═══██╗██╔════╝   ████╗  ██║██║   ██║██╔═══██╗██╔════╝
              ██╔██╗ ██║██║   ██║██║   ██║███████╗   ██╔██╗ ██║██║   ██║██║   ██║███████╗
              ██║╚██╗██║╚██╗ ██╔╝██║   ██║╚════██║   ██║╚██╗██║╚██╗ ██╔╝██║   ██║╚════██║
              ██║ ╚████║ ╚████╔╝ ╚██████╔╝███████║   ██║ ╚████║ ╚████╔╝ ╚██████╔╝███████║
              ╚═╝  ╚═══╝  ╚═══╝   ╚═════╝ ╚══════╝   ╚═╝  ╚═══╝  ╚═══╝   ╚═════╝ ╚══════╝
post-logout

REST API

GET https://<ip>/nvue_v1/system/message

Related Commands

nv set system message pre-login

nv set system message post-login

Notes

Printed as raw, unformatted output


nv set/unset system message pre-login message

nv set system message pre-login {message}

nv unset system message pre-login

Set/unset the pre-login message.

Syntax Description

message

The new pre-login message to set

Default

N/A

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv set system message pre-login new-pre
admin@nvos:~$ nv unset system message pre-login

REST API

PATCH https://<ip>/nvue_v1/system/message

Related Commands

nv show system message

Notes


nv set/unset system message post-login message

nv set system message post-login {message}

nv unset system message post-login

Set the post-login message.

The unset form of the command unsets the post-login message.

Syntax Description

message

The new post-login message to set

Default

N/A

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv set system message post-login new-post
admin@nvos:~$ nv unset system message post-login

REST API

PATCH https://<ip>/nvue_v1/system/message

Related Commands

nv show system message

Notes


nv set/unset system message post-logout

nv set system message post-logout <message>

nv unset system message post-logout

Set/unset the post-logout message.

Syntax Description

message

The new post-logout message to set

Default

N/A

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv set system message post-logout Goodbye

REST API

PATCH https://<ip>/nvue_v1/system/message

Related Commands

nv show system message

Notes


SSH

show ssh-server

nv show ssh-server

Limit the maximum number of concurrent user sessions.

Syntax Description

N/A

Default

100

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv show system ssh-server
                        operational  applied
----------------------  -----------  -------
authentication-retries  6            6      
inactive-timeout        15           15     
login-record-period     1            1      
login-timeout           120          120     
max-sessions            100          100     
[port]                  22           22    

REST API

GET https://<ip>/nvue_v1/system/ssh-server

Related Commands

nv show system ssh-server

Notes

Applied for new connections only.


nv set/unset system ssh-server inactive-timeout

nv set/unset system ssh-server inactive-timeout [<integer time>]

Configure inactive timeout for ssh connections in minutes <0-35000>.

Syntax Description

integer time

Number of minutes: 0–35000 minutes

Default

15 minutes

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv set system ssh-server inactive-timeout 300

REST API

PATCH https://<ip>/nvue_v1/system/ssh-server

Related Commands

nv show system ssh-server

Notes

Applied for new connections only.


nv set/unset system ssh-server max-sessions

nv set/unset system ssh-server max-sessions [<integer sessions>]

Configuring the maximum number of ssh connections <3–100>.

Syntax Description

integer sessions

Number of sessions: 3–100 sessions

Default

100

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv set system ssh-server max-sessions 10

REST API

PATCH https://<ip>/nvue_v1/system/ssh-server

Related Commands

nv show system ssh-server

Notes

Applied for new connections only.


nv set/unset system ssh-server port

nv set/unset system ssh-server port <port-id>

Configure the ports for the systems ssh-server.

Syntax Description

port-id

TCP Port ID (integer: 1–65535)

Default

22

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv set system ssh-server port 777

REST API

PATCH https://<ip>/nvue_v1/system/ssh-server

Related Commands

nv show system ssh-server

Notes

Multiple ports can be configured. By default, port 22 is used. Any user configuration will remove the default, the user need to configure port 22 explicitly.


Serial-Console

nv show system serial-console

nv show system serial-console

Show system serial console.

Syntax Description

N/A

Default

N/A

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv show system serial-console
                    operational  applied  
------------------  -----------  --------  
sysrq-capabilities  disabled     disabled
inactivity-timeout  15           15
connected-to        cpu          cpu

REST API

GET https://<ip>/nvue_v1/system/serial-console

Related Commands

nv set system serial-console inactivity-timeout nv set system serial-console sysrq-capabilities

Notes

Applied after reconnection only.


nv set/unset system serial-console inactivity-timeout

nv set/unset system serial-console inactivity-timeout

Configure inactivity timeout for serial console in minutes <0-35000>

Syntax Description

N/A

Default

15

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv set system serial-console inactivity-timeout 300

REST API

PATCH https://<ip>/nvue_v1/system/serial-console

Related Commands

nv show system serial-console

Notes

Applied after reconnection only.


nv set/unset system serial-console sysrq-capabilities

nv set/unset system serial-console sysrq-capabilities

Enables or disables SysRq key capabilities.

Default

Disabled

History

25.02.1884

Example

Copy
Copied!
            

            
admin@nvos:~$ nv set system serial-console sysrq-capabilities enabled

REST API

PATCH https://<ip>/nvue_v1/system/ssh-server

Related Commands

nv show system serial-console

Notes


© Copyright 2025, NVIDIA. Last updated on Aug 29, 2025.
content here