On 18.03.2014 19:05, Richard Cochran wrote: > On Tue, Mar 18, 2014 at 11:48:19AM +0100, Thomas Mayer wrote: >> Hi everybody, >> >> for a project I have to synchronize around 3 or 4 devices. Because all >> devices have two ethernet ports, one requirement is not to use a >> separate network switch. Instead the idea is to chain up all devices and >> use the middle device(s) as bridge(s). >> >> Example: >> >> DEV1_eth0|DEV1_eth1 <--> DEV2_eth0|DEV2_eth1 <--> DEV3_eth0|DEV3_eth1 >> >> I have already tried a few things, but it seems that it's not possible >> to use hardware timestamping with a bridge device. > > You would need to write firewall rules to divert PTP events to the > local host. > I was afraid to hear that, now I have to increase my knowledge about iptables first :D
>> Has anybody tried to build something like this and can give me a little >> help? > > So you want to build a Transparent Clock? Linuxptp does not implement > this, but you might be able to reuse parts of the code. I think it > will be a bit of work. > Not really :D ...I still hope that a simple installation with Ordinary Clocks only works fine for my use case. Thanks, Thomas ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ Linuxptp-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linuxptp-users
