---
title: "PTPGrandmaster"
description: "API documentation for PTPGrandmaster"
url: https://developer.disguise.one/python-api/docs/ptpgrandmaster/
---

# PTPGrandmaster

Information about a PTP (Precision Time Protocol) grandmaster detected on the network. Reported by the IP VFC card and exposed via Machine.vfcPTPGrandmasters.

See also: [Feed Guide](/plugins/guides/feed)

Base class: _\_BlipValue_

## Properties

#### **announceMessageLogInterval** : _int_ _(Read-Only)_

The log-base-2 of the seconds between Announce messages broadcast by this grandmaster (e.g. 0 = one per second, -3 = eight per second).

#### **clockID** : _str_ _(Read-Only)_

The 8-byte EUI-64 clock identifier of the grandmaster, formatted as colon-separated hex bytes (e.g. “ec:46:70:ff:fe:0a:b5

”).

#### **domainNumber** : _int_ _(Read-Only)_

The PTP domain number (0-255). Allows multiple independent PTP networks to coexist on the same physical network.

#### **transportType** : _str_ _(Read-Only)_

The PTP transport (e.g. “UDP”).