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Examples of Stacking Configurations

Here are some sample stacking configurations for 220 series switches.

In each example in this section, the stacks consist of 48-port switches and connections are made through SFP+ ports 49 and 50.

If you are stacking 24-port switches, make the connections through SFP+ ports 25 and 26.

If you are stacking 12-port switches, make the connections through SFP+ ports 13 and 14.

Stacked Switches in a Single Rack

This example shows a stack of four switches in a single rack.

The stack manager, installed at the top of the rack, is connected to the management console. Each switch in the stack is connected to two other switches by 10GbE stacking cables inserted into the switches' 10 GbE SFP+ ports. (See Stacking Cables.)
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Cable Connections for Four Stacked Switches in the Same Rack
../Graphics/stack_1rack.png
Stacked Switches in a Single Rack: Recommended Connections (48-Port Switches) lists the recommended order for connecting the stacking ports in this example.
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Stacked Switches in a Single Rack: Recommended Connections (48-Port Switches)

Connect this slot and port . . . . . . To this slot and port
Slot 1 Port 50 Slot 2 Port 49
Slot 2 Port 50 Slot 3 Port 49
Slot 3 Port 50 Slot 4 Port 49
Slot 4 Port 50 Slot 1 Port 49
Note

Note

If you are stacking 24-port switches, make the connections through SFP+ ports 25 and 26.

If you are stacking 12-port switches, make the connections through SFP+ ports 13 and 14.

Stacked Switches Across Two Racks

The following example shows four switches physically located in two adjacent racks.

In this example, start by connecting the top switches together (slots 1 and 2). The first switch you power on will be designated the stack manager, and the second will be the standby.
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Cable Connections for Four Switches in Two Racks
../Graphics/stack_2racks.png
Stacked Switches Across Two Racks: Recommended Connections (48-Port Switches) lists the recommended order for connecting the stacking ports in this example.
Click to expand in new window

Stacked Switches Across Two Racks: Recommended Connections (48-Port Switches)

Connect this slot and port . . . . . . To this slot and port
Slot 1 Rack A Port 50 Slot 3 Rack A Port 49
Slot 2 Rack B Port 50 Slot 1 Rack A Port 49
Slot 3 Rack A Port 50 Slot 4 Rack B Port 49
Slot 4 Rack B Port 50 Slot 2 Rack B Port 49
Note

Note

If you are stacking 24-port switches, make the connections through SFP+ ports 25 and 26.

If you are stacking 12-port switches, make the connections through SFP+ ports 13 and 14.

Stacked Switches Across Several Racks

In this example, four switches are installed at the tops of four adjacent racks. Port 50 on each switch is connected to Port 49 on the next switch. Port 50 on the last switch is connected to Port 49 on the first switch.
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Cable Connections for Stacked Switches Across Several Racks
../Graphics/stack_multiracks.png
Stacked Switches Across Several Racks: Recommended Connections (48-Port Switches) lists the recommended order for connecting the stacking ports in this example.
Click to expand in new window

Stacked Switches Across Several Racks: Recommended Connections (48-Port Switches)

Connect this slot and port . . . . . . To this slot and port
Slot 1 Rack A Port 50 Slot 2 Rack B Port 49
Slot 2 Rack B Port 50 Slot 3 Rack C Port 49
Slot 3 Rack C Port 50 Slot 4 Rack D Port 49
Slot 4 Rack D Port 50 Slot 1 Rack A Port 49
Note

Note

If you are stacking 24-port switches, make the connections through SFP+ ports 25 and 26.

If you are stacking 12-port switches, make the connections through SFP+ ports 13 and 14.

Published May 2018prev | next

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