I had a pair of 5406R switches with VSF running the network at the recent Atmosphere 16 ANZ even t on the Gold Coast in Australia.
Here are the relevant parts from that config:
vsf
enable domain 1020301
member 1
type "J9850A" mac-address 40a8f0-9dee00
priority 255
link 1 1/A21
link 1 name "I-Link1_1"
exit
member 2
type "J9850A" mac-address 3ca82a-44ad00
priority 128
link 1 2/A21
link 1 name "I-Link2_1"
exit
oobm-mad
exit
oobm
ip address dhcp-bootp
vsf member 1
ip address 10.30.31.1 255.255.255.0
exit
vsf member 2
ip address 10.30.31.101 255.255.255.0
exit
exit
no allow-v2-modules
Notes:
- VSF link was a single 40Gb DAC (A21) - you should never have just 1, but I wanted to show off the 40Gb ports!
- MAD was via the OOBM ports. You can directly connect these together with an ethernet cable when there are only 2 members in the stack; I had them connected via a ToR switch (the ProCurve 3800 in the picture)
FYI, you will also find answers to VSF questions and all things related to HPE networking (both ProCurve / E-Series / ProVision / ArubaOS-Switch and 3Com / H3C / A-Series / Comware) on the HPE support community pages https://community.hpe.com --> https://community.hpe.com/t5/Networking/ct-p/Networking