Stacking Units; Stacking Two Units - 3Com SuperStack 3 Switch 3300 XM User Manual

Stacking Units

Stacking Two Units

Units in the Switch 1100/3300 family can be stacked together and then
treated as a single manageable unit with one IP address.
The Matrix Port on the rear of the Switch SM, TM and XM allows you to
connect two Switch units back-to-back. For this you need a Matrix Cable
(part number 3C16965). Contact your supplier for details.
The three Matrix Ports on the rear of the Switch MM allow you to
connect a total of four units in the Switch 1100/3300 family together
using Matrix Cables.
The Switches in a stack are numbered 1 to 4, from the bottom up, for
management purposes. The SuperStack 3 Switch 3300 MM will always
be identified as Unit 1 and should therefore be positioned at the bottom
of the stack.
Only one SuperStack 3 Switch 3300 MM unit can be fitted per stack.
You can stack two Switch units with a single Matrix Cable. To do this:
1 Power-off both units.
2 Arrange the units as required. If you are using a Switch 3300 MM it must
be positioned at the bottom of the Stack. They can be rack-mounted or
free-standing; if you choose to have them free-standing, remember to
position the rubber feet as detailed in "Placing Units On Top of Each
Other" on page 28. When positioning the units, note that Matrix Cables
are 1m (3.28ft) long.
3 Connect one end of the Matrix Cable to the Matrix Port of the top
Switch, and the other end to the Matrix Port of the lower Switch (See
Figure 12).
4 If you use the management software of the units:
Ensure that both units have the same version of management
I
software
Ensure that you re-configure the stack-wide features on both units
I
For more information about management software, see "Managing the
Switch" on page 34.
Stacking Units 29