I also tried it with SB7700 IB switch. The configuration shows that the subnet manager is enabled:
=================================================================
SB7700-IB-100Gb [standalone: master] (config) # show ib sm subnet-prefix
FE:80:00:00:00:00:00:00
SB7700-IB-100Gb [standalone: master] (config) # show ib sm sweep-interval
10 seconds
SB7700-IB-100Gb [standalone: master] (config) # show ib sm sweep-on-trap
enable
SB7700-IB-100Gb [standalone: master] (config) # show ib sm
enable
=================================================================
However, it didn't detected the connection on port 1 and 3:
=================================================================
SB7700-IB-100Gb [standalone: master] (config) # show interface ib status
Interface Description Speed Current line rate Logical port state Physical port state
--------- ----------- --------- ----------------- ------------------ -------------------
IB1/1 - - Down Polling
IB1/2 - - Down Polling
IB1/3 - - Down Polling
IB1/4 - - Down Polling
IB1/5 - - Down Polling
IB1/6 - - Down Polling
IB1/7 - - Down Polling
IB1/8 - - Down Polling
IB1/9 - - Down Polling
IB1/10 - - Down Polling
IB1/11 - - Down Polling
IB1/12 - - Down Polling
IB1/13 - - Down Polling
IB1/14 - - Down Polling
IB1/15 - - Down Polling
IB1/16 - - Down Polling
IB1/17 - - Down Polling
IB1/18 - - Down Polling
IB1/19 - - Down Polling
IB1/20 - - Down Polling
- Down Polling
IB1/22 - - Down Polling
IB1/23 - - Down Polling
IB1/24 - - Down Polling
IB1/25 - - Down Polling
IB1/26 - - Down Polling
IB1/27 - - Down Polling
IB1/28 - - Down Polling
IB1/29 - - Down Polling
IB1/30 - - Down Polling
IB1/31 - - Down Polling
IB1/32 - - Down Polling
IB1/33 - - Down Polling
IB1/34 - - Down Polling
IB1/35 - - Down Polling
IB1/36 - - Down Polling
===========================================================================