Thunderbolt bridge and File Transfer questions
I have several related questions about connecting two macs via Thunderbolt bridge. Here is my scenario: I have a 2017 iMac Pro, and a 2018 15” MacBookPro (I know…brag, brag brag!). I purchased a 40GB/sec 0.5 meter cable from OWC which I leave plugged into the iMac. I activated the thunderbolt bridge (TB) Network interface in the Network Preference pane of both Mac. I turn on SMB file sharing on the iMac Pro.
Connecting the cable to the MacBook results (sometimes) in the activation of the TB interface (after 10-15 seconds) with a “self-assigned IP”. I connect via smb://169.etc. File transfers are fast. So far so good!
Question #1. Sometimes the TB interface is not activated. It seems the only way I can get it to activate is restart the iMac Pro (the sharing computer). I’ve looked around to see if there is a way to re-activate the interface (which I imagine has crashed?) without a restart. Some discussion on stack exchange from 2014suggests “kextunload” and “kextload” on some appropriate interface files…but this does not seem to do it.
Does anyone have a suggestion for re-activating the TB interface without restarting?
Question #2. I have the TB interface set to do “Using DHCP”. This is fine, but each restart gives a different IP address, which I then have to look-up before I can use smb to connect. I tried giving the interface a fixed IP address “169.254.100.11” say. But this doesn’t work.
Is there a way to fix the IP address for the TB interface?
Question #3. Should I plug the cable into the MacBook when it is closed (asleep?) or when it is awake? Should I remove the cable only when it is asleep (closed?)? I worry about shocks to the interface that could fry something…but maybe that is silly.
Thanks for any suggestions!