[etherlab-users] Using Ethernet Over Ethercat (EoE)

Gavin Lambert gavinl at compacsort.com
Tue Dec 9 00:55:22 CET 2014


On 3 December 2014 22:38, quoth Luca Ma:
> Basically I don't understand how the Master decides to forward a certain Ethernet frame 
> to a certain EtherCAT slave.
[...]
> How the Master knows to which slave it has to send the EtherCAT datagrams containing 
> the EoE fragments?

I haven't used EoE myself, but my understanding is that each EoE capable slave shows up as a separate virtual NIC.  These then need to get IP addresses via normal OS means (DHCP or static assignment) and then participate in IP routing just like real NICs.  So packets will be directed to the appropriate slave depending on the destination IP address.





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