Configuring PTP

PTP is a time synchronization protocol defined in IEEE 1588 for nodes distributed across a network. With PTP, it is possible to synchronize distributed clocks with an accuracy of less than 1 microsecond via Ethernet networks. In addition, PTP's hardware timestamping feature provides timestamp information in the ERSPAN Type III header that can be used to calculate packet latency among edge, aggregate, and core switches. A PTP system can consist of a combination of PTP and non-PTP devices. PTP devices include ordinary clocks, boundary clocks, and transparent clocks. Non-PTP devices include ordinary network switches, routers, and other infrastructure devices. PTP is a distributed protocol that specifies how real-time PTP clocks in the system synchronize with each other. These clocks are organized into a master-slave synchronization hierarchy with the grandmaster clock, which is the clock at the top of the hierarchy, determining the reference time for the entire system. Synchronization is achieved by exchanging PTP timing messages, with the members using the timing information to adjust their clocks to the time of their master in the hierarchy. PTP operates within a logical scope called a PTP domain.

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

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

Enabling PTP

Enabling PTP

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

{
  "fmEntity": {
    "children": [
      {
        "fmPtp": {
          "attributes": {
            "adminSt": ""
}}}]}}

{
    imdata:[]
}

<System>
  <fm-items>
    <ptp-items>
      <adminSt></adminSt>
    </ptp-items>
  </fm-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.

feature ptp


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.

MODN
fmEntity sys/fm
fmPtp sys/fm/ptp


fmPtp Properties

The following table contains information about the fmPtp 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 NameData TypeDescriptionValues
adminStfm:AdminState
(scalar:Enum8)		Admin statusSELECTION:
1 -
2 - disabled
DEFAULT: disabled


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

Disabling PTP

Disabling PTP

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

{
  "fmEntity": {
    "children": [
      {
        "fmPtp": {
          "attributes": {
            "adminSt": "disabled"
}}}]}}

{
    imdata:[]
}

<System>
  <fm-items>
    <ptp-items>
      <adminSt>disabled</adminSt>
    </ptp-items>
  </fm-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.

no feature ptp


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.

MODN
fmEntity sys/fm
fmPtp sys/fm/ptp


fmPtp Properties

The following table contains information about the fmPtp 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 NameData TypeDescriptionValues
adminStfm:AdminState
(scalar:Enum8)		Admin statusSELECTION:
1 -
2 - disabled
DEFAULT: disabled


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

Configuring ACL-Based PTP Forwarding

Configuring ACL-Based PTP Forwarding

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

{
  "topSystem": {
    "children": [
      {
        "ptpPtpEntity": {
          "attributes": {
            "aclRedirect": "enabled"
}}}]}}

{
    imdata:[]
}

<System>
  <ptp-items>
    <aclRedirect>enabled</aclRedirect>
  </ptp-items>
</System>

Note: This example was added in Release 9.3(5).


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.

ptp acl-redirect


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.

MODN
topSystem sys
ptpPtpEntity sys/ptp


ptpPtpEntity Properties

The following table contains information about the ptpPtpEntity 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 NameData TypeDescriptionValues
aclRedirectptp:AdminSt
(scalar:Enum8)		PTP acl redirect enable/disableSELECTION:
1 - enabled
2 - disabled
DEFAULT: disabled


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 ACL-Based PTP Forwarding

Deleting ACL-Based PTP Forwarding

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

{
  "topSystem": {
    "children": [
      {
        "ptpPtpEntity": {
          "attributes": {
            "aclRedirect": "disabled"
}}}]}}

{
    imdata:[]
}

<System>
  <ptp-items>
    <aclRedirect>disabled</aclRedirect>
  </ptp-items>
</System>

Note: This example was added in Release 9.3(5).


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.

no ptp acl-redirect


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.

MODN
topSystem sys
ptpPtpEntity sys/ptp


ptpPtpEntity Properties

The following table contains information about the ptpPtpEntity 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 NameData TypeDescriptionValues
aclRedirectptp:AdminSt
(scalar:Enum8)		PTP acl redirect enable/disableSELECTION:
1 - enabled
2 - disabled
DEFAULT: disabled


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