PTP over Bonded Interfaces

sfptpd supports PTP packets over bonded interfaces in an active/standby mode. In addition, sfptpd also supports bonding over LACP (802.3ad) bonding.

Bonding of interfaces on supported adapters employs the Linux bonding driver. Multiple ports can be included into a single bond where one port is selected as the active interface and all others are standby.

• sfptpd will detect which port is active and which ports are passive in the bond.
• sfptpd will discipline the high precision clock on the active port’s network adapter.
• sfptpd will discipline the clocks of passive ports from the active adapter’s clock.
• Via the bonding driver you can select the active port (and therefore clock).
• A bond can include non-PTP capable ports on a supported adapter.

  sfptpd will switch to software time-stamping when a non-hardware time-stamping port becomes active.

• A bond can include third party ports .

  sfptpd will switch to software time-stamping when a third party port becomes active.

• A bond can include any number of ports.