User's Manual

5. To allow simultaneous shared SSH Passthrough sessions from multiple Rack Power
Manager servers, select the Enable Hub/Spoke Forwarding checkbox.
If hub/spoke forwarding is enabled, shared SSH Passthrough sessions are centralized to
the Rack Power Manager server that owns the appliance to which the session is
opened.
NOTE: The appliance is owned by the Rack Power Manager server to which it was first added. To determine which
Rack Power Manager server owns an appliance, go the appliance Unit Overview Page and click Properties -
Network. The RPM Server menu displays the name of the server that owns the appliance. See Unit Properties on
page 136 for more information.
6. To allow sharing among SSH Passthrough sessions and Avocent Session Viewer sessions,
select the Enable RPM Client Serial Sessions checkbox.
7. Click Save.
Configuring the Avocent Session Viewer
To allow sharing among sessions initiated from the Rack Power Manager client software, you
must preconfigure the Avocent Session Viewer as the serial viewer.
To configure the Avocent Session Viewer:
1. Click the Profile tab.
2. Click Applications in the side navigation bar.
3. Select the Avocent Session Viewer checkbox.
4. Click Save.
For more information about serial session applications, see Choosing the serial session
application on page 41.
SSH Passthrough Sessions
You may establish an SSH connection to a PDU by specifying the appropriate name in the SSH
command. You may also establish an SSH session to a target device with multiple connections,
but the appliance name and port number must be entered in place of the target device name.
NOTE: It is recommended that no more than 2048 concurrent data logging and SSH Passthrough sessions be
open.
Preemption
Your SSH session may be interrupted or disconnected based on the appliance preemption
levels. If the appliance supports Rack Power Manager software preemption levels, then user
Chapter 14: SSH Passthrough Sessions 169