my shitty notes I've asked AI to clean up and reorder so that they are readable

It is just work in progress so I don't really car

clientConfig.md

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+# Prereqs
+
+Here I assume that your NIC is called enp4s0d1
+
+Then check if the client supports **hardware-transmit** and **hardware-receive**. 
+
+```bash
+ethtool -T enp4s0d1
+```
+
+If the client does support these two, continue on
+
+
+# Prepare PTP configs
+
+First, install the **linuxptp** package.
+
+Then make sure that no other time synchronization services, like chrony or ntpd or systemd-timesynced, are running. 
+
+```bash
+sudo systemctl stop ntpd 
+sudo systemctl stop chrony 
+sudo systemctl stop systemd-timesyncd 
+sudo systemctl disable ntpd
+sudo systemctl disable chrony 
+sudo systemctl disable systemd-timesyncd 
+```
+
+
+## Create PTP config file
+
+sudo vim /etc/linuxptp/ptp4l-client.conf
+
+```bash
+[global]
+verbose                 1
+
+# Hardware timestamping using the NIC PHC
+time_stamping           hardware
+
+# Must match your grandmaster
+domainNumber            0
+network_transport       UDPv4
+delay_mechanism         E2E
+
+# Force this machine to be a PTP client, never grandmaster
+clientOnly              1
+
+# Useful while tuning
+summary_interval        1
+
+# Repeat these square brackets for each interface
+[enp4s0]
+```
+
+
+
+
+# Make PTP persistent
+
+sudo vim /etc/systemd/system/ptp4l-client.service
+
+```bash
+[Unit]
+Description=PTP client on enp4s0
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/ptp4l -i enp4s0 -f /etc/linuxptp/ptp4l-client.conf -m
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=multi-user.target
+```
+
+sudo vim /etc/systemd/system/phc2sys-client.service
+
+```bash
+[Unit]
+Description=Sync system clock from enp4s0 PHC
+After=ptp4l-client.service
+Requires=ptp4l-client.service
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/phc2sys -s enp4s0 -c CLOCK_REALTIME -w -m
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=multi-user.target
+```
+
+
+
+Then reload daemon and activate both PTP client and phc2sys
+
+```bash
+sudo systemctl daemon-reload
+sudo systemctl enable --now ptp4l-client.service
+sudo systemctl enable --now phc2sys-client.service
+```
+
+
+
+# Verification
+
+Verify if PTP and phc2sys works with these commands
+
+```bash
+journalctl -u ptp4l-client -f
+journalctl -u phc2sys-client -f
+```
+
+
+
+and also verify the status of PTP with these commands
+
+```bash
+pmc -u -b 0 'GET PORT_DATA_SET'
+pmc -u -b 0 'GET TIME_STATUS_NP'
+pmc -u -b 0 'GET CURRENT_DATA_SET'
+```
+
+
+
+
+# Boundary clock server
+
+First, create a ptp4l-boundary-server.conf
+
+sudo vim /etc/linuxptp/ptp4l-boundary-server.conf
+
+```bash
+[global]
+time_stamping           hardware
+domainNumber            0
+network_transport       UDPv4
+delay_mechanism         E2E
+# boundary_clock_jbod     1
+
+# Let BMCA decide:
+# upstream-facing port should become SLAVE/client
+# downstream-facing port should become MASTER/server
+priority1               200
+priority2               128
+
+summary_interval        1
+
+[eno1]
+# toward RPi5 grandmaster
+
+[ens1f0]
+# toward Nexus
+```
+
+
+Here's systemd service configs for a boundary clock server
+
+sudo vim /etc/systemd/system/ptp4l-boundary-server.service
+
+```bash
+[Unit]
+Description=PTP client on <NIC1>, <NIC2>
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/ptp4l -i <NIC1> -i <NIC2> -f /etc/linuxptp/ptp4l-boundary-server.conf -m
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=multi-user.target
+```
+
+sudo vim /etc/systemd/system/phc2sys-boundary-server.service
+
+```bash
+[Unit]
+Description=Sync system clock from enp4s0 PHC
+After=ptp4l-boundary-server.service
+Requires=ptp4l-boundary-server.service
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/phc2sys -a -rr -m
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=multi-user.target
+```
+
+
+Then reload daemon and activate both PTP client and phc2sys
+
+```bash
+sudo systemctl daemon-reload
+sudo systemctl enable --now ptp4l-boundary-server.service
+sudo systemctl enable --now phc2sys-boundary-server.service
+```