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Till provided slides detailing the choices we have in assigning MC addresses for FCOM and 'private' IOC->EIOC communications. The slides can be found on Sharepoint at
The following decisions were made in our meeting: https://slacspace.slac.stanford.edu/sites/LCLS%20Document%20Storage/01%20-%20LCLS%20Systems/electronbeamsys/controls/Shared%20Documents/Fast%20Feedback/FNET%20Network/fnet_mc_addresses.pdf
The following decisions were made in our meeting:
- We will reserve 8k contiguous addresses for FCOM
- DNS names for all IOCs and EIOCs on FNET will be <ioc/eioc name>-fnet
- DNS names for master IOC->PAD Multicast groups will be <ioc name>-padg
- Kukhee has a special case: the PACs. The RF Master IOC actually sends control commands to PACs, so it will do this in a different multicast group. the DNS name for master IOC->PAC Multicast groups will be <ioc name>-pacg
- The group agreed on the 'script' method of associating a PAD/PAC with it's master IOC multicast group
- The script will be called in the st.cmd file
- the script will use the DNS name, and the EIOC will use dns look-up for the actual mc group
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