# SwiNOG 40: Deploying Precision Time Protocol across WAN

DevFeed: [SwiNOG 40: Deploying Precision Time Protocol across WAN](<https://devfeed.tech/articles/swinog-40-deploying-precision-time-protocol-across-wan-11251.md>)

Original publisher: [Read original article](<https://blog.ipspace.net/2025/09/swinog40-ptp-wan/>)

Published: 2025-09-23T05:33:00Z

Content type: article

Language: en

Sources: [ipSpace.net blog](<https://devfeed.tech/sources/ipspace-net-blog.md>)

Topics: [Network](<https://devfeed.tech/topics/network.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>)

Tags: [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [network](<https://devfeed.tech/tags/network.md>), [precision](<https://devfeed.tech/tags/precision.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [ptp](<https://devfeed.tech/tags/ptp.md>), [synchronization](<https://devfeed.tech/tags/synchronization.md>), [time](<https://devfeed.tech/tags/time.md>), [wide](<https://devfeed.tech/tags/wide.md>), [worth-reading](<https://devfeed.tech/tags/worth-reading.md>)

## AI overview

The article discusses deploying Precision Time Protocol across a country-wide WAN to achieve nanosecond-level synchronization between cities. It states that this requires dedicated infrastructure and points to a SwiNOG 40 presentation by Oliver Ettlin for more details.

## Source excerpt

Is it possible to deploy Precision Time Protocol across a country-wide WAN network and reach nanosecond-level synchronization between cities? It's definitely not trivial and only works over dedicated infrastructure; for more details, watch the PTP in WANs (video) presentation Oliver Ettlin had at SwiNOG 40.