How to configure iLOM ssh key for SUN T-series

Note if you do not have at least Version r49743 firmware then you will run into this bug
6823488 Cannot add an SSH key for automatic password authentication.

> ssh root@ilom
Waiting for daemons to initialize...

Daemons ready

Sun(TM) Integrated Lights Out Manager

Version r49743

Copyright 2009 Sun Microsystems, Inc. All rights reserved.
Use is subject to license terms.

-> cd /SP/users/admin/ssh/keys/1

-> set load_uri=
Load successful.