[Linuxptp-users] vlan id = 0

[Christian L. <chr...@hi...>]

Hi


We run linuxptp on 802.1 across a PTP aware switch.

Typically these switches have the bad habit of removing 802.1Q tags on egress if vlan id = 0.

On the other hand our engineering guidelines require that we send with 802.1Q in order to convey the PCP (priority code point).

So we configure linuxptp as follows:

vconfig add eth0 0
ifconfig eth0.0 up

vconfig set_egress_map eth0.0 15 7 #PCP = 7

Then we configure ptp4l with "socket_priority = 15" and the port [ eth0.0]

The result is that linuxptp is not working because it's (sending to and ) receiving from port eth0.0 which does not receive untagged packets.

Is there any solution to send PTP packets to eth0.0 (i.e. 802.1Q tagged packets) and receive both from eth0 (tagged) and eth0.0 (untagged)?

Best regards, Chris

[cid:image001.png@01D7767A.1E32C390]

Christian Leeb
PG,PGGA,2877, Senior Project Manager
Hitachi ABB Power Grids
Bruggerstrasse 66, 72
Aargau
5400 Baden, CH
Phone: +41 58 585 19 59
Mobile: +41 79 341 57 57

[cid:image002.png@01D7767A.1E32C390]<https://www.facebook.com/hitachipg/>  [cid:image003.png@01D7767A.1E32C390] <https://www.instagram.com/HitachiPG/>   [cid:image004.png@01D7767A.1E32C390] <https://twitter.com/HitachiPG>   [cid:image005.png@01D7767A.1E32C390] <https://www.youtube.com/HitachiABBPowerGrids>   [cid:image006.png@01D7767A.1E32C390] <https://www.linkedin.com/company/hitachipg>

[cid:image007.png@01D7767A.1E32C390]<www.hitachiabb-powergrids.com>