Exadata : How to manually reboot an Infiniband Switch

It may happen that, during an Exadata patching session or not, you'll have to manually reboot an Infiniband (IB) Switch; it is kind of easy, there's just few things to know :

• Do NOT reboot both Exadata Switches at the same time -- you'll get into lots of trouble
• Each Exadata component has a dedicated ILOM that can be accessed by a dedicated IP address (please find an example with a database server here) but not the IB Swicthes; an IB Switch ILOM is embedded within the Switch itself and has to be accessed using the ILOM shell with the "spsh" command and then use the "reset /SP" command to reboot the Switch as shown below

[root@myclusterdb01 ~]# ssh myclustersw-ib3

Last login: Wed Dec 20 17:58:46 2017 from myclusterdb01.mydomain.com
You are now logged in to the root shell.
It is recommended to use ILOM shell instead of root shell.
All usage should be restricted to documented commands and documented
config files.
To view the list of documented commands, use "help" at linux prompt.
[root@myclustersw-ib3 ~]# spsh

Oracle(R) Integrated Lights Out Manager
Version ILOM 3.0 r47111
Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
->  reset /SP
Are you sure you want to reset /SP (y/n)? y

Performing reset on /SP Broadcast message from root (Sun Jan 28 20:14:42 2018):
The system is going down for reboot NOW!
-> Connection to myclustersw-ib3 closed by remote host.
Connection to myclustersw-ib3 closed.
[root@myclusterdb01 ~]#

Give it few minutes and you're done !