Slot 1
Slot 2
Slot 3
Slot 4
Figure 26: SummitStack Configuration Using Different Switch Models and SummitStack 40G Cables
Example: Stacked Switches across Two Racks
The following example shows four switches – two of one model, two of another model – physically
located in two adjacent racks.
Each rack has a switch of one model at the top, with a switch of another model below it. The switches
are connected into a stack using SummitStack ports on installed VIM2-SummitStack and VIM1-
SummitStack modules. In this example, start by connecting the top switches together; they will be
designated the stack primary and backup nodes (slot 1 and slot 2, respectively).
Figure 27: SummitStack Connections Using Four Switches with SummitStack Ports on VIMs
lists the recommended order for connecting the stacking ports in this example.
Table 12: Stacked Switches across Two Racks: Connections
Connect this slot and port . . .
. . . To this slot and port
Slot 1
Stack Port 2
Slot 2
Stack Port 1
Slot 2
Stack Port 2
Slot 3
Stack Port 1
Slot 3
Stack Port 2
Slot 4
Stack Port 1
Slot 4
Stack Port 2
Slot 1
Stack Port 1
Example: Stacked Switches across Several Racks
shows five switches installed at the tops of five adjacent racks. To accommodate the shortest
possible cables, immediately adjacent switches are not always connected together. Port 2 on one switch
is connected to Port 1 on the next connected switch. If the easy setup feature is used to configure the
stack parameters, the assigned slot numbers will be as shown in the figure.
Connect the Switches to Form the Stack Ring
Build Stacks
52
ExtremeSwitching 5320 Series Hardware Installation Guide
