Mac to Mac networking with Thunderbolt

[nry]

Looks like recently Apple introduced the ability to network two Mac's together using a single thunderbolt lead.

http://arstechnica.com/apple/2013/10/os-x-10-9-brings-fast-but-choppy-thunderbolt-networking/

Seeing as I have a spare thunderbolt lead around I would give this a try. But I can't get the Mac's to detect that they have been connected together.

Both are running the latest version of OS X 10.9, one is a 2011 iMac, the other a 2011 MBP.
Tested a different thunderbolt lead with no success, also checked both Mac's thunderbolt ports work with a external SSD drive.

Any ideas how I can activate this? Would be pretty neat having that sort of bandwidth between the two

 

[Nasty_Savage]

Check the networking system preferences and make sure thunderbolt is an active connection between the two?

 

[nry]

Rebooted both machines and the MBP crashed on reboot with a kernel error which makes me wonder if that was causing it.

Connected them up again after a reboot and worked first time!

Performance isn't great under initial testing though..

➜  ~  iperf -c 10.0.22.20
------------------------------------------------------------
Client connecting to 10.0.22.20, TCP port 5001
TCP window size:  129 KByte (default)
------------------------------------------------------------
[  4] local 10.0.22.10 port 53967 connected with 10.0.22.20 port 5001
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-10.0 sec  2.21 GBytes  1.90 Gbits/sec


➜  ~  iperf -c 10.0.22.20 -t 30 -P 2
------------------------------------------------------------
Client connecting to 10.0.22.20, TCP port 5001
TCP window size:  129 KByte (default)
------------------------------------------------------------
[  5] local 10.0.22.10 port 53980 connected with 10.0.22.20 port 5001
[  4] local 10.0.22.10 port 53981 connected with 10.0.22.20 port 5001
[ ID] Interval       Transfer     Bandwidth
[  5]  0.0-30.0 sec  3.19 GBytes   914 Mbits/sec
[  4]  0.0-30.0 sec  3.17 GBytes   908 Mbits/sec
[SUM]  0.0-30.0 sec  6.36 GBytes  1.82 Gbits/sec


➜  ~  iperf -c 10.0.22.20 -t 15 -P 2 -l 256k
------------------------------------------------------------
Client connecting to 10.0.22.20, TCP port 5001
TCP window size:  129 KByte (default)
------------------------------------------------------------
[  4] local 10.0.22.10 port 53994 connected with 10.0.22.20 port 5001
[  5] local 10.0.22.10 port 53993 connected with 10.0.22.20 port 5001
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-15.0 sec  1.50 GBytes   861 Mbits/sec
[  5]  0.0-15.0 sec  1.50 GBytes   861 Mbits/sec
[SUM]  0.0-15.0 sec  3.01 GBytes  1.72 Gbits/sec


➜  ~  iperf -c 10.0.22.20 -w 512k -l 256k -P 2 -f m -t 60
------------------------------------------------------------
Client connecting to 10.0.22.20, TCP port 5001
TCP window size: 0.50 MByte (WARNING: requested 0.50 MByte)
------------------------------------------------------------
[  5] local 10.0.22.10 port 54576 connected with 10.0.22.20 port 5001
[  4] local 10.0.22.10 port 54577 connected with 10.0.22.20 port 5001
[ ID] Interval       Transfer     Bandwidth
[  5]  0.0-60.0 sec  6392 MBytes   894 Mbits/sec
[  4]  0.0-60.0 sec  6392 MBytes   894 Mbits/sec
[SUM]  0.0-60.0 sec  12784 MBytes  1787 Mbits/sec