LZ4 compression is used in most firmware's so is a very logical choice for PTP & NTP network protocols, But we can use others..
GZip, LZ4, Brotli-G

Preferred PTP & NTP Formula reasoning : RS 00:00 02/08/2024

PTP timers are based on time stamps,

Time stamps are fast,
Latency between servers is calculated by a combination of accurate latency measurements combined with accurate clocks.

Firmware supported compressed time formula : PTP & NTP single packet multiple cycle sequence.

Preferred PTP & NTP Formula (c)RS

Preferring binary with GZip, Brotly & LZ4 compression is preferred,

Most network cards & motherboard firmware supports at a minimum LZ4 or GZip because the firmware bootloader has a compressed ROM,

Frequently LZ4 is supported.

Network packet exchange for supported compression with subtopic, Compression supported by the firmware!

The basic firmware support allows compression on device & not referring to the central processor for task offloading.

Preferred PTP & NTP Formula (c)RS

Compressed NTP & PTP Ultra high precision packet

processed for latency, rout & robust high precision clock adjustments.

Protocol Table:

Per device internal probe & declare

Packet negotiations (cache saved for reuse)

The table will be the sum of the preferred compression & protocol methods by task optimised preference & shall not give specific details away.

Firmware supported compression per device.

LZ4 compression is used in most firmware's so is a very logical choice for PTP & NTP network protocols, But we can use others..
LZ4, Brotli-G, GZip

Send preferred compression list based on parsing of closest device on the sending path:

Device to device priorities

Network card, Wifi, Router etcetera
Motherboard support
Central processor support

Packets shall then consist of time stamps & -+ latency adjusters & a detailed 1 to 32 Byte group, reason says 64Byte..
Compressed time packet : NTP & PTP Ultra high precision packet.

This shall be processed for latency, rout & robust high precision clock adjustments.

https://datatracker.ietf.org/doc/draft-ietf-ntp-over-ptp/

https://science.n-helix.com/2022/01/ntp.html
https://science.n-helix.com/2023/06/ptp.html