240730: HjC
if a qtd board is black in the STP2 monitor page, you can see if it responds to a ping.
If it does not respond, but other qtd boards in the crate are green, then check the
error detail for it - you may have to replace the board.

go to scaler48.trg.bnl.local to ping the boards in MXQ for instance:

[trg@scaler48 ~]$ ping qt32d-51
PING qt32d-51.scaler.bnl.local (10.0.1.231) 56(84) bytes of data.
64 bytes from qt32d-51.scaler.bnl.local (10.0.1.231): icmp_seq=1 ttl=64 time=0.612 ms
64 bytes from qt32d-51.scaler.bnl.local (10.0.1.231): icmp_seq=2 ttl=64 time=0.508 ms
64 bytes from qt32d-51.scaler.bnl.local (10.0.1.231): icmp_seq=3 ttl=64 time=0.511 ms
^C
--- qt32d-51.scaler.bnl.local ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms

this shows the qt32d-51 is connected OK

rtt min/avg/max/mdev = 0.508/0.543/0.612/0.055 ms
[trg@scaler48 ~]$ ping qt32d-52
PING qt32d-52.scaler.bnl.local (10.0.1.232) 56(84) bytes of data.
From scaler48.scaler.bnl.local (10.0.1.102) icmp_seq=1 Destination Host Unreachable
From scaler48.scaler.bnl.local (10.0.1.102) icmp_seq=2 Destination Host Unreachable
From scaler48.scaler.bnl.local (10.0.1.102) icmp_seq=3 Destination Host Unreachable
From scaler48.scaler.bnl.local (10.0.1.102) icmp_seq=4 Destination Host Unreachable

this shows qt32d-52 is not ok and likely needs replacing.