Configuring Telnet

This section contains payload examples and corresponding CLIs to demonstrate how to use the NX-API REST API to configure Telnet on Cisco Nexus 3000 and 9000 Series switches.

For more information, see the Cisco Nexus 9000 Series NX-OS Security Configuration Guide:

https://www.cisco.com/c/en/us/support/switches/nexus-9000-series-switches/products-installation-and-configuration-guides-list.html/

Configuring the Maximum Login Attempts for Telnet

POST http://<mgmt0_IP>/api/mo/sys/comm.json

{
  "commEntity": {
    "children": [
      {
        "commTelnet": {
          "attributes": {
            "loginAttempts": "2"
}}}]}}

{
    imdata:[]
}

<System>
  <comm-items>
    <telnet-items>
      <loginAttempts>2</loginAttempts>
    </telnet-items>
  </comm-items>
</System>

Note: This example was added in Release 9.3(3).

CLI Commands

The CLI commands are equivalent to the payload examples displayed in the pane on the right. Click the DME tab in the top-left corner of the right pane to view the JSON payload. Click the YANG tab to view the XML payload.

telnet login-attempts 2

Verifying a DME Configuration

The following table contains the distinguished name (DN) for each managed object (MO) in the DME payload. Issue a GET request using the DN to verify the configuration was posted or to get information about the configured properties of a particular object.

MO	DN
commEntity	sys/comm
commTelnet	sys/comm/telnet

commTelnet Properties

The following table contains information about the commTelnet properties in the DME payload. For more information about the properties and MOs, see the NX-API DME Model Reference linked in the Related Documentation section below.

Property Name	Data Type	Description	Values
loginAttempts	scalar:Uint32	Max number of login attempts allowed before TELNET session is reset	RANGE: [1 , 10] DEFAULT: 3

Related Documentation

For other CLI options, see the Cisco Nexus 9000 Series NX-OS Command Reference:

http://www.cisco.com/c/en/us/support/switches/nexus-9000-series-switches/products-command-reference-list.html

See the NX-API DME Model Reference for detailed information about classes and attributes described in the payload:

https://developer.cisco.com/site/nx-os/docs/nexus-model-reference/

For information about using the payloads, see the Cisco Nexus 9000 Series NX-OS Programmability Guide:

https://www.cisco.com/c/en/us/support/switches/nexus-9000-series-switches/products-programming-reference-guides-list.html

Deleting the Maximum Login Attempts for Telnet

POST http://<mgmt0_IP>/api/mo/sys/comm.json

{
  "commEntity": {
    "children": [
      {
        "commTelnet": {
          "attributes": {
            "loginAttempts": "3"
}}}]}}

{
    imdata:[]
}

<System>
  <comm-items>
    <telnet-items>
      <loginAttempts>3</loginAttempts>
    </telnet-items>
  </comm-items>
</System>