- Written by Yin Chen
- Posted on May 9, 2022
- Updated on June 2, 2022
- 2732 Views
Precision Time Protocol (PTP) management messages are general messages sent to PTP-enabled switches on the data plane. On Arista switches, its behavior depends on the configured PTP mode.
- Written by Jeff Chan
- Posted on January 18, 2019
- Updated on January 23, 2019
- 3574 Views
Until now, all PTP packets received on Arista switches with PTP boundary mode enabled will automatically be sent to
- Written by Sourabh Bollapragada
- Posted on January 3, 2023
- Updated on June 29, 2023
- 1591 Views
PTP 1-step Boundary Clock (or 1-step BC) is similar to 2-step BC in function, but doesn’t send the PTP Follow_Up message. The timestamp present in the PTP Follow_Up message’s preciseOriginTimestamp field is sent in the PTP Sync message’s originTimestamp field along with a non-zero correctionField.
- Written by Ryan Lui
- Posted on October 20, 2021
- Updated on October 20, 2021
- 3085 Views
This brief TOI describes a small update made to Arista’s implementation of the Best Master Clock Algorithm (BMCA),
- Written by Kieran Weaver
- Posted on March 3, 2023
- Updated on March 7, 2023
- 1062 Views
Media Access Control Security (MACsec) is an industry-standard encryption mechanism that protects all traffic flowing on the Ethernet links. MACsec is based on IEEE 802.1X and IEEE 802.1AE standards.
- Written by Shyam Kota
- Posted on August 16, 2018
- Updated on October 1, 2018
- 3163 Views
This feature allows users to view most recent history of offset from master, mean path delay and skew values via CLI
- Written by Shifeng Jin
- Posted on December 7, 2020
- Updated on December 9, 2020
- 3263 Views
Since the introduction of PTP Monitoring feature[1], PTP is capable of recording recent metrics for offset from
- Written by Yin Chen
- Posted on March 3, 2023
- Updated on March 7, 2023
- 1020 Views
This TOI document describes the supported Precision Time Protocol (PTP) functionality on the CCS-750X platforms. Due to the nature of the hardware for these products, the supported PTP functionality and interoperation with other features may differ from other Arista products.
- Written by Simon Eteen
- Posted on May 9, 2022
- Updated on May 11, 2022
- 2719 Views
The `ptp forward-v1` command configures the switch to forward Precision Time Protocol version 1 packets as regular multicast traffic. By default, when PTP is enabled and PTPv1 packets are received on the PTP enabled interfaces, these packets are trapped by the CPU, logged and discarded.
- Written by Scott Bailey
- Posted on March 3, 2023
- Updated on August 30, 2023
- 1093 Views
This feature enables L3 reachability for the PTP on the switch using one or more shared “Loopback” interfaces.
- Written by Yin Chen
- Posted on December 17, 2021
- Updated on May 5, 2022
- 2903 Views
This article describes the usage of the ptp free-running source clock command, which selects a time source used by a switch running the Precision Time Protocol (PTP) while it is in a free-running state.
- Written by Zhen Xue
- Posted on September 2, 2021
- Updated on July 19, 2023
- 4278 Views
From the Precision Time Protocol (PTP) perspective, Multi Chassis Link Aggregation (MLAG) peers are two physical
- Written by Charlotte Fedderly
- Posted on June 20, 2022
- Updated on May 26, 2023
- 2228 Views
Synchronous Ethernet (SyncE) provides support for frequency synchronization over Ethernet between devices traceable to an external frequency reference, like a primary reference clock, as specified in ITU G.8261.
- Written by Harold Fong
- Posted on August 30, 2019
- Updated on September 5, 2019
- 5144 Views
This feature makes the PTP agent aware of VLANs, running with a single Best Master Clock Algorithm (BMCA). It allows