
Multicasting Images 217
Novell Confidential Manual (99a) 11 September 2003
To create rules to select the workstations you want to participate in this multicast session, click
Add under Include Machines Which Meet Any of These Criteria.
Click Help on the Participation page for more information.
9 Click OK to return to the ZENworks Imaging Multicast Sessions page.
10 The check box next to the multicast session name is automatically selected, showing that the
session is enabled. If you want to disable a multicast session, deselect the check box next to
the session name.
11 If multiple multicast sessions are defined that use rules to select participating workstations, it
is possible that a workstation could qualify to participate in more than one session. If this
occurs, the first enabled session in this list for which the workstation qualifies takes
precedence over the other enabled sessions. If you want to change the position of a session in
the list, select the multicast session name > click Move Up or Move Down.
12 Click OK.
Physically Visiting Each Computer
1 (Optional) Install the ZfD imaging agent on each of the participating computers.
See “Why Use Multicast?” on page 215 for the reasons and for further instructions.
2 Create a set of ZfD imaging boot diskettes or an imaging boot CD for each person who will
assist with the multicast session, or enable PXE on the participating computers.
If you don’t know how to do this, see Creating Imaging Boot Diskettes in Preparing for Basic
Imaging Operations in Workstation Imaging in ZENworks for Desktops 3.2 Getting Started
Guide, or Preparing an Imaging Boot Device or Method in ZENworks for Desktops 3.2
Deployment Guide.
3 At each computer, including the master computer, access a Linux prompt by using the imaging
boot diskettes, imaging boot CD, or if it is PXE-enabled, boot it up.
4 Depending on the method you used in Step 3, enter manual at the boot prompt or select to
start in Maintenance Mode from the PXE menu.
5 To start the multicast session, you have two choices:
You can enter the following command at the bash prompt of every computer:
img session name
where name is any string that uniquely identifies this multicast session from other
multicast sessions that might be in progress on the network. Use the same session name
on each of the participating computers in this multicast session. You can specify any
multicast session, including one that originates from the proxy server (as long as you
specify the session name used by the proxy server).
Example:
img session doug
The img session command can take other parameters that allow you to designate the
master computer and the imaging start time beforehand. See “Imaging Engine (img:
Command Line and Menu)” on page 224 for details.
You can type img at the bash prompt to display a menu > select Multicast Session > select
Client if this is a participating computer or Master if this is the session master. Fill in the
Session Name, Number of Clients (applies only to session master), and Timeout (applies
only to session master) fields. See “Imaging Engine (img: Command Line and Menu)”
on page 224 for details.
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