Using SummitStack-V160 Stacking

A stacking rate of 160 Gbps can be achieved using certain configurations of Summit switches. For example, an X460-G2 switch can be connected to an X670-G2-48x-4q switch through 40-Gbps stacking connections that provide 160 Gbps full-duplex bandwidth. This connection is performed using the VIM4-2q module in the X460-G2 switch and the QSFP+ ports on the X670-G2-48x-4q switch. V-160 stacking is also supported on the X480 series switch using the VIM3-40G4x module, and on the X770 switch using the QSFP+ ports.

On the VIM4-40G4X module, ports S3 and S4 are the stacking ports.

SummitStack-V160 Configuration shows an example stack using Summit X670, X650, X480, and X460 series switches.
Click to expand in new window
SummitStack-V160 Configuration
../Graphics/SH_253_X670_V160_stack.svg

Using the SummitStack-V160 Stacking: Connections lists the recommended order for connecting the stacking ports in this example.

Click to expand in new window

Using the SummitStack-V160 Stacking: 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 5

Stack Port 1

Slot 5

Stack Port 2

Slot 1

Stack Port 1

To connect a VIM3-40G4X or VIM4-40G4X stacking port to a stacking port on a VIM2-SummitStack-V80 or SummitStack-V80 module, you must set the VIM3 or VIM4 port to operate at the slower speed of the SummitStack-V80 port. To do so, use the configure stacking-support stack-ports selection command. For more information about configuring stacking ports, see the ExtremeXOS 16.2 User Guide.

For SummitStack V-160 on the Summit X770, ports 103 and 104 are the stacking ports.